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test/source/blender/blenkernel/intern/geometry_set.cc

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/* SPDX-FileCopyrightText: 2023 Blender Authors
*
* SPDX-License-Identifier: GPL-2.0-or-later */
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
#include "BLI_bounds.hh"
Geometry Nodes: Make instances real on-demand This commit makes the geometry output of the collection info usable. The output is the geometry of a collection instance, but this commit adds a utility to convert the instances to real geometry, used in the background whenever it is needed, like copy on write. The recursive nature of the "realize instances" code is essential, because collection instances in the `InstancesComponent`, might have no geometry sets of their own containing even more collection instances, which might then contain object instances, etc. Another consideration is that currently, every single instance contains a reference to its data. This is inefficient since most of the time there are many locations and only a few sets of unique data. So this commit adds a `GeometryInstanceGroup` to support this future optimization. The API for instances returns a vector of `GeometryInstanceGroup`. This may be less efficient when there are many instances, but it makes more complicated operations like point distribution that need to iterate over input geometry multiple times much simpler. Any code that needs to change data, like most of the attribute nodes, can simply call `geometry_set_realize_instances(geometry_set)`, which will move any geometry in the `InstancesComponent` to new "real" geometry components. Many nodes can support read-only access to instances in order to avoid making them real, this will be addressed where needed in the near future. Instances from the existing "dupli" system are not supported yet. Differential Revision: https://developer.blender.org/D10327
2021-02-12 11:58:15 -06:00
#include "BLI_map.hh"
#include "BLI_task.hh"
Geometry Nodes: Make instances real on-demand This commit makes the geometry output of the collection info usable. The output is the geometry of a collection instance, but this commit adds a utility to convert the instances to real geometry, used in the background whenever it is needed, like copy on write. The recursive nature of the "realize instances" code is essential, because collection instances in the `InstancesComponent`, might have no geometry sets of their own containing even more collection instances, which might then contain object instances, etc. Another consideration is that currently, every single instance contains a reference to its data. This is inefficient since most of the time there are many locations and only a few sets of unique data. So this commit adds a `GeometryInstanceGroup` to support this future optimization. The API for instances returns a vector of `GeometryInstanceGroup`. This may be less efficient when there are many instances, but it makes more complicated operations like point distribution that need to iterate over input geometry multiple times much simpler. Any code that needs to change data, like most of the attribute nodes, can simply call `geometry_set_realize_instances(geometry_set)`, which will move any geometry in the `InstancesComponent` to new "real" geometry components. Many nodes can support read-only access to instances in order to avoid making them real, this will be addressed where needed in the near future. Instances from the existing "dupli" system are not supported yet. Differential Revision: https://developer.blender.org/D10327
2021-02-12 11:58:15 -06:00
#include "BLT_translation.h"
Geometry Nodes: Make instances real on-demand This commit makes the geometry output of the collection info usable. The output is the geometry of a collection instance, but this commit adds a utility to convert the instances to real geometry, used in the background whenever it is needed, like copy on write. The recursive nature of the "realize instances" code is essential, because collection instances in the `InstancesComponent`, might have no geometry sets of their own containing even more collection instances, which might then contain object instances, etc. Another consideration is that currently, every single instance contains a reference to its data. This is inefficient since most of the time there are many locations and only a few sets of unique data. So this commit adds a `GeometryInstanceGroup` to support this future optimization. The API for instances returns a vector of `GeometryInstanceGroup`. This may be less efficient when there are many instances, but it makes more complicated operations like point distribution that need to iterate over input geometry multiple times much simpler. Any code that needs to change data, like most of the attribute nodes, can simply call `geometry_set_realize_instances(geometry_set)`, which will move any geometry in the `InstancesComponent` to new "real" geometry components. Many nodes can support read-only access to instances in order to avoid making them real, this will be addressed where needed in the near future. Instances from the existing "dupli" system are not supported yet. Differential Revision: https://developer.blender.org/D10327
2021-02-12 11:58:15 -06:00
#include "BKE_attribute.h"
#include "BKE_curves.hh"
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
#include "BKE_geometry_set.hh"
#include "BKE_geometry_set_instances.hh"
#include "BKE_grease_pencil.hh"
#include "BKE_instances.hh"
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
#include "BKE_lib_id.h"
#include "BKE_mesh.hh"
#include "BKE_mesh_wrapper.hh"
Geometry Nodes: Make instances real on-demand This commit makes the geometry output of the collection info usable. The output is the geometry of a collection instance, but this commit adds a utility to convert the instances to real geometry, used in the background whenever it is needed, like copy on write. The recursive nature of the "realize instances" code is essential, because collection instances in the `InstancesComponent`, might have no geometry sets of their own containing even more collection instances, which might then contain object instances, etc. Another consideration is that currently, every single instance contains a reference to its data. This is inefficient since most of the time there are many locations and only a few sets of unique data. So this commit adds a `GeometryInstanceGroup` to support this future optimization. The API for instances returns a vector of `GeometryInstanceGroup`. This may be less efficient when there are many instances, but it makes more complicated operations like point distribution that need to iterate over input geometry multiple times much simpler. Any code that needs to change data, like most of the attribute nodes, can simply call `geometry_set_realize_instances(geometry_set)`, which will move any geometry in the `InstancesComponent` to new "real" geometry components. Many nodes can support read-only access to instances in order to avoid making them real, this will be addressed where needed in the near future. Instances from the existing "dupli" system are not supported yet. Differential Revision: https://developer.blender.org/D10327
2021-02-12 11:58:15 -06:00
#include "BKE_modifier.h"
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
#include "BKE_pointcloud.h"
#include "BKE_volume.h"
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
Geometry Nodes: Make instances real on-demand This commit makes the geometry output of the collection info usable. The output is the geometry of a collection instance, but this commit adds a utility to convert the instances to real geometry, used in the background whenever it is needed, like copy on write. The recursive nature of the "realize instances" code is essential, because collection instances in the `InstancesComponent`, might have no geometry sets of their own containing even more collection instances, which might then contain object instances, etc. Another consideration is that currently, every single instance contains a reference to its data. This is inefficient since most of the time there are many locations and only a few sets of unique data. So this commit adds a `GeometryInstanceGroup` to support this future optimization. The API for instances returns a vector of `GeometryInstanceGroup`. This may be less efficient when there are many instances, but it makes more complicated operations like point distribution that need to iterate over input geometry multiple times much simpler. Any code that needs to change data, like most of the attribute nodes, can simply call `geometry_set_realize_instances(geometry_set)`, which will move any geometry in the `InstancesComponent` to new "real" geometry components. Many nodes can support read-only access to instances in order to avoid making them real, this will be addressed where needed in the near future. Instances from the existing "dupli" system are not supported yet. Differential Revision: https://developer.blender.org/D10327
2021-02-12 11:58:15 -06:00
#include "DNA_collection_types.h"
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
#include "DNA_object_types.h"
#include "DNA_pointcloud_types.h"
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
#include "BLI_rand.hh"
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
#include "MEM_guardedalloc.h"
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namespace blender::bke {
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
/* -------------------------------------------------------------------- */
/** \name Geometry Component
* \{ */
GeometryComponent::GeometryComponent(Type type) : type_(type) {}
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
GeometryComponentPtr GeometryComponent::create(Type component_type)
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
switch (component_type) {
case Type::Mesh:
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
return new MeshComponent();
case Type::PointCloud:
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
return new PointCloudComponent();
case Type::Instance:
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
return new InstancesComponent();
case Type::Volume:
return new VolumeComponent();
case Type::Curve:
return new CurveComponent();
case Type::Edit:
return new GeometryComponentEditData();
case Type::GreasePencil:
return new GreasePencilComponent();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
BLI_assert_unreachable();
BLI: support weak users and version in implicit sharing info The main goal of these changes is to support checking if some data has been changed over time. This is used by the WIP simulation nodes during baking to detect which attributes have to be stored in every frame because they have changed. By using a combination of a weak user count and a version counter, it is possible to detect that an attribute (or any data controlled by implicit sharing) has not been changed with O(1) memory and time. It's still possible that the data has been changed multiple times and is the same in the end and beginning of course. That wouldn't be detected using this mechanism. The `ImplicitSharingInfo` struct has a new weak user count. A weak reference is one that does not keep the referenced data alive, but makes sure that the `ImplicitSharingInfo` itself is not deleted. If some piece of data has one strong and multiple weak users, it is still mutable. If the strong user count goes down to zero, the referenced data is freed. Remaining weak users can check for this condition using `is_expired`. This is a bit similar to `std::weak_ptr` but there is an important difference: a weak user can not become a strong user while one can create a `shared_ptr` from a `weak_ptr`. This restriction is necessary, because some code might be changing the referenced data assuming that it is the only owner. If another thread suddenly adds a new owner, the data would be shared again and the first thread would not have been allowed to modify the data in the first place. There is also a new integer version counter in `ImplicitSharingInfo`. It is incremented whenever some code wants to modify the referenced data. Obviously, this can only be done when the data is not shared because then it would be immutable. By comparing an old and new version number of the same sharing info, one can check if the data has been modified. One has to keep a weak reference to the sharing info together with the old version number to ensure that the new sharing info is still the same as the old one. Without this, it can happen that the sharing info was freed and a new one was allocated at the same pointer address. Using a strong reference for this purpose does not work, because then the data would never be modified because it's shared.
2023-04-28 12:03:42 +02:00
return {};
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
Geometry Nodes: new geometry attribute API Currently, there are two attribute API. The first, defined in `BKE_attribute.h` is accessible from RNA and C code. The second is implemented with `GeometryComponent` and is only accessible in C++ code. The second is widely used, but only being accessible through the `GeometrySet` API makes it awkward to use, and even impossible for types that don't correspond directly to a geometry component like `CurvesGeometry`. This patch adds a new attribute API, designed to replace the `GeometryComponent` attribute API now, and to eventually replace or be the basis of the other one. The basic idea is that there is an `AttributeAccessor` class that allows code to interact with a set of attributes owned by some geometry. The accessor itself has no ownership. `AttributeAccessor` is a simple type that can be passed around by value. That makes it easy to return it from functions and to store it in containers. For const-correctness, there is also a `MutableAttributeAccessor` that allows changing individual and can add or remove attributes. Currently, `AttributeAccessor` is composed of two pointers. The first is a pointer to the owner of the attribute data. The second is a pointer to a struct with function pointers, that is similar to a virtual function table. The functions know how to access attributes on the owner. The actual attribute access for geometries is still implemented with the `AttributeProvider` pattern, which makes it easy to support different sources of attributes on a geometry and simplifies dealing with built-in attributes. There are different ways to get an attribute accessor for a geometry: * `GeometryComponent.attributes()` * `CurvesGeometry.attributes()` * `bke::mesh_attributes(const Mesh &)` * `bke::pointcloud_attributes(const PointCloud &)` All of these also have a `_for_write` variant that returns a `MutabelAttributeAccessor`. Differential Revision: https://developer.blender.org/D15280
2022-07-08 16:16:56 +02:00
int GeometryComponent::attribute_domain_size(const eAttrDomain domain) const
{
if (this->is_empty()) {
return 0;
}
const std::optional<AttributeAccessor> attributes = this->attributes();
Geometry Nodes: new geometry attribute API Currently, there are two attribute API. The first, defined in `BKE_attribute.h` is accessible from RNA and C code. The second is implemented with `GeometryComponent` and is only accessible in C++ code. The second is widely used, but only being accessible through the `GeometrySet` API makes it awkward to use, and even impossible for types that don't correspond directly to a geometry component like `CurvesGeometry`. This patch adds a new attribute API, designed to replace the `GeometryComponent` attribute API now, and to eventually replace or be the basis of the other one. The basic idea is that there is an `AttributeAccessor` class that allows code to interact with a set of attributes owned by some geometry. The accessor itself has no ownership. `AttributeAccessor` is a simple type that can be passed around by value. That makes it easy to return it from functions and to store it in containers. For const-correctness, there is also a `MutableAttributeAccessor` that allows changing individual and can add or remove attributes. Currently, `AttributeAccessor` is composed of two pointers. The first is a pointer to the owner of the attribute data. The second is a pointer to a struct with function pointers, that is similar to a virtual function table. The functions know how to access attributes on the owner. The actual attribute access for geometries is still implemented with the `AttributeProvider` pattern, which makes it easy to support different sources of attributes on a geometry and simplifies dealing with built-in attributes. There are different ways to get an attribute accessor for a geometry: * `GeometryComponent.attributes()` * `CurvesGeometry.attributes()` * `bke::mesh_attributes(const Mesh &)` * `bke::pointcloud_attributes(const PointCloud &)` All of these also have a `_for_write` variant that returns a `MutabelAttributeAccessor`. Differential Revision: https://developer.blender.org/D15280
2022-07-08 16:16:56 +02:00
if (attributes.has_value()) {
return attributes->domain_size(domain);
}
return 0;
}
std::optional<AttributeAccessor> GeometryComponent::attributes() const
Geometry Nodes: new geometry attribute API Currently, there are two attribute API. The first, defined in `BKE_attribute.h` is accessible from RNA and C code. The second is implemented with `GeometryComponent` and is only accessible in C++ code. The second is widely used, but only being accessible through the `GeometrySet` API makes it awkward to use, and even impossible for types that don't correspond directly to a geometry component like `CurvesGeometry`. This patch adds a new attribute API, designed to replace the `GeometryComponent` attribute API now, and to eventually replace or be the basis of the other one. The basic idea is that there is an `AttributeAccessor` class that allows code to interact with a set of attributes owned by some geometry. The accessor itself has no ownership. `AttributeAccessor` is a simple type that can be passed around by value. That makes it easy to return it from functions and to store it in containers. For const-correctness, there is also a `MutableAttributeAccessor` that allows changing individual and can add or remove attributes. Currently, `AttributeAccessor` is composed of two pointers. The first is a pointer to the owner of the attribute data. The second is a pointer to a struct with function pointers, that is similar to a virtual function table. The functions know how to access attributes on the owner. The actual attribute access for geometries is still implemented with the `AttributeProvider` pattern, which makes it easy to support different sources of attributes on a geometry and simplifies dealing with built-in attributes. There are different ways to get an attribute accessor for a geometry: * `GeometryComponent.attributes()` * `CurvesGeometry.attributes()` * `bke::mesh_attributes(const Mesh &)` * `bke::pointcloud_attributes(const PointCloud &)` All of these also have a `_for_write` variant that returns a `MutabelAttributeAccessor`. Differential Revision: https://developer.blender.org/D15280
2022-07-08 16:16:56 +02:00
{
return std::nullopt;
};
std::optional<MutableAttributeAccessor> GeometryComponent::attributes_for_write()
Geometry Nodes: new geometry attribute API Currently, there are two attribute API. The first, defined in `BKE_attribute.h` is accessible from RNA and C code. The second is implemented with `GeometryComponent` and is only accessible in C++ code. The second is widely used, but only being accessible through the `GeometrySet` API makes it awkward to use, and even impossible for types that don't correspond directly to a geometry component like `CurvesGeometry`. This patch adds a new attribute API, designed to replace the `GeometryComponent` attribute API now, and to eventually replace or be the basis of the other one. The basic idea is that there is an `AttributeAccessor` class that allows code to interact with a set of attributes owned by some geometry. The accessor itself has no ownership. `AttributeAccessor` is a simple type that can be passed around by value. That makes it easy to return it from functions and to store it in containers. For const-correctness, there is also a `MutableAttributeAccessor` that allows changing individual and can add or remove attributes. Currently, `AttributeAccessor` is composed of two pointers. The first is a pointer to the owner of the attribute data. The second is a pointer to a struct with function pointers, that is similar to a virtual function table. The functions know how to access attributes on the owner. The actual attribute access for geometries is still implemented with the `AttributeProvider` pattern, which makes it easy to support different sources of attributes on a geometry and simplifies dealing with built-in attributes. There are different ways to get an attribute accessor for a geometry: * `GeometryComponent.attributes()` * `CurvesGeometry.attributes()` * `bke::mesh_attributes(const Mesh &)` * `bke::pointcloud_attributes(const PointCloud &)` All of these also have a `_for_write` variant that returns a `MutabelAttributeAccessor`. Differential Revision: https://developer.blender.org/D15280
2022-07-08 16:16:56 +02:00
{
return std::nullopt;
}
GeometryComponent::Type GeometryComponent::type() const
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
return type_;
}
bool GeometryComponent::is_empty() const
{
return false;
}
void GeometryComponent::delete_self()
{
delete this;
}
BLI: support weak users and version in implicit sharing info The main goal of these changes is to support checking if some data has been changed over time. This is used by the WIP simulation nodes during baking to detect which attributes have to be stored in every frame because they have changed. By using a combination of a weak user count and a version counter, it is possible to detect that an attribute (or any data controlled by implicit sharing) has not been changed with O(1) memory and time. It's still possible that the data has been changed multiple times and is the same in the end and beginning of course. That wouldn't be detected using this mechanism. The `ImplicitSharingInfo` struct has a new weak user count. A weak reference is one that does not keep the referenced data alive, but makes sure that the `ImplicitSharingInfo` itself is not deleted. If some piece of data has one strong and multiple weak users, it is still mutable. If the strong user count goes down to zero, the referenced data is freed. Remaining weak users can check for this condition using `is_expired`. This is a bit similar to `std::weak_ptr` but there is an important difference: a weak user can not become a strong user while one can create a `shared_ptr` from a `weak_ptr`. This restriction is necessary, because some code might be changing the referenced data assuming that it is the only owner. If another thread suddenly adds a new owner, the data would be shared again and the first thread would not have been allowed to modify the data in the first place. There is also a new integer version counter in `ImplicitSharingInfo`. It is incremented whenever some code wants to modify the referenced data. Obviously, this can only be done when the data is not shared because then it would be immutable. By comparing an old and new version number of the same sharing info, one can check if the data has been modified. One has to keep a weak reference to the sharing info together with the old version number to ensure that the new sharing info is still the same as the old one. Without this, it can happen that the sharing info was freed and a new one was allocated at the same pointer address. Using a strong reference for this purpose does not work, because then the data would never be modified because it's shared.
2023-04-28 12:03:42 +02:00
void GeometryComponent::delete_data_only()
{
this->clear();
}
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
/** \} */
/* -------------------------------------------------------------------- */
/** \name Geometry Set
* \{ */
GeometrySet::GeometrySet() = default;
GeometrySet::GeometrySet(const GeometrySet &other) = default;
GeometrySet::GeometrySet(GeometrySet &&other) = default;
GeometrySet::~GeometrySet() = default;
GeometrySet &GeometrySet::operator=(const GeometrySet &other) = default;
GeometrySet &GeometrySet::operator=(GeometrySet &&other) = default;
GeometryComponent &GeometrySet::get_component_for_write(GeometryComponent::Type component_type)
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
GeometryComponentPtr &component_ptr = components_[size_t(component_type)];
if (!component_ptr) {
/* If the component did not exist before, create a new one. */
component_ptr = GeometryComponent::create(component_type);
return *component_ptr;
}
if (component_ptr->is_mutable()) {
/* If the referenced component is already mutable, return it directly. */
BLI: support weak users and version in implicit sharing info The main goal of these changes is to support checking if some data has been changed over time. This is used by the WIP simulation nodes during baking to detect which attributes have to be stored in every frame because they have changed. By using a combination of a weak user count and a version counter, it is possible to detect that an attribute (or any data controlled by implicit sharing) has not been changed with O(1) memory and time. It's still possible that the data has been changed multiple times and is the same in the end and beginning of course. That wouldn't be detected using this mechanism. The `ImplicitSharingInfo` struct has a new weak user count. A weak reference is one that does not keep the referenced data alive, but makes sure that the `ImplicitSharingInfo` itself is not deleted. If some piece of data has one strong and multiple weak users, it is still mutable. If the strong user count goes down to zero, the referenced data is freed. Remaining weak users can check for this condition using `is_expired`. This is a bit similar to `std::weak_ptr` but there is an important difference: a weak user can not become a strong user while one can create a `shared_ptr` from a `weak_ptr`. This restriction is necessary, because some code might be changing the referenced data assuming that it is the only owner. If another thread suddenly adds a new owner, the data would be shared again and the first thread would not have been allowed to modify the data in the first place. There is also a new integer version counter in `ImplicitSharingInfo`. It is incremented whenever some code wants to modify the referenced data. Obviously, this can only be done when the data is not shared because then it would be immutable. By comparing an old and new version number of the same sharing info, one can check if the data has been modified. One has to keep a weak reference to the sharing info together with the old version number to ensure that the new sharing info is still the same as the old one. Without this, it can happen that the sharing info was freed and a new one was allocated at the same pointer address. Using a strong reference for this purpose does not work, because then the data would never be modified because it's shared.
2023-04-28 12:03:42 +02:00
component_ptr->tag_ensured_mutable();
return *component_ptr;
}
/* If the referenced component is shared, make a copy. The copy is not shared and is
* therefore mutable. */
component_ptr = component_ptr->copy();
return *component_ptr;
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
GeometryComponent *GeometrySet::get_component_ptr(GeometryComponent::Type type)
{
if (this->has(type)) {
return &this->get_component_for_write(type);
}
return nullptr;
}
const GeometryComponent *GeometrySet::get_component(GeometryComponent::Type component_type) const
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
return components_[size_t(component_type)].get();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
bool GeometrySet::has(const GeometryComponent::Type component_type) const
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
const GeometryComponentPtr &component = components_[size_t(component_type)];
return component.has_value() && !component->is_empty();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
void GeometrySet::remove(const GeometryComponent::Type component_type)
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
components_[size_t(component_type)].reset();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
void GeometrySet::keep_only(const Span<GeometryComponent::Type> component_types)
{
for (GeometryComponentPtr &component_ptr : components_) {
if (component_ptr) {
if (!component_types.contains(component_ptr->type())) {
component_ptr.reset();
}
}
}
}
void GeometrySet::keep_only_during_modify(const Span<GeometryComponent::Type> component_types)
{
Vector<GeometryComponent::Type> extended_types = component_types;
extended_types.append_non_duplicates(GeometryComponent::Type::Instance);
extended_types.append_non_duplicates(GeometryComponent::Type::Edit);
this->keep_only(extended_types);
}
void GeometrySet::remove_geometry_during_modify()
{
this->keep_only_during_modify({});
}
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
void GeometrySet::add(const GeometryComponent &component)
{
BLI_assert(!components_[size_t(component.type())]);
component.add_user();
components_[size_t(component.type())] = const_cast<GeometryComponent *>(&component);
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
Vector<const GeometryComponent *> GeometrySet::get_components() const
{
Vector<const GeometryComponent *> components;
for (const GeometryComponentPtr &component_ptr : components_) {
if (component_ptr) {
components.append(component_ptr.get());
}
}
return components;
}
std::optional<Bounds<float3>> GeometrySet::compute_boundbox_without_instances() const
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
std::optional<Bounds<float3>> bounds;
if (const PointCloud *pointcloud = this->get_pointcloud()) {
bounds = bounds::merge(bounds, pointcloud->bounds_min_max());
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
if (const Mesh *mesh = this->get_mesh()) {
Bounds<float3> mesh_bounds{float3(std::numeric_limits<float>::max()),
float3(std::numeric_limits<float>::lowest())};
if (BKE_mesh_wrapper_minmax(mesh, mesh_bounds.min, mesh_bounds.max)) {
bounds = bounds::merge(bounds, {mesh_bounds});
}
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
if (const Volume *volume = this->get_volume()) {
Bounds<float3> volume_bounds{float3(std::numeric_limits<float>::max()),
float3(std::numeric_limits<float>::lowest())};
if (BKE_volume_min_max(volume, volume_bounds.min, volume_bounds.max)) {
bounds = bounds::merge(bounds, {volume_bounds});
}
}
if (const Curves *curves_id = this->get_curves()) {
bounds = bounds::merge(bounds, curves_id->geometry.wrap().bounds_min_max());
}
if (const GreasePencil *grease_pencil = this->get_grease_pencil()) {
bounds = bounds::merge(bounds, grease_pencil->bounds_min_max());
}
return bounds;
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
std::ostream &operator<<(std::ostream &stream, const GeometrySet &geometry_set)
{
Vector<std::string> parts;
if (const Mesh *mesh = geometry_set.get_mesh()) {
parts.append(std::to_string(mesh->totvert) + " verts");
parts.append(std::to_string(mesh->totedge) + " edges");
parts.append(std::to_string(mesh->faces_num) + " faces");
parts.append(std::to_string(mesh->totloop) + " corners");
}
if (const Curves *curves = geometry_set.get_curves()) {
parts.append(std::to_string(curves->geometry.point_num) + " control points");
parts.append(std::to_string(curves->geometry.curve_num) + " curves");
}
if (const GreasePencil *grease_pencil = geometry_set.get_grease_pencil()) {
parts.append(std::to_string(grease_pencil->layers().size()) + " grease pencil layers");
}
if (const PointCloud *point_cloud = geometry_set.get_pointcloud()) {
parts.append(std::to_string(point_cloud->totpoint) + " points");
}
if (const Volume *volume = geometry_set.get_volume()) {
parts.append(std::to_string(BKE_volume_num_grids(volume)) + " volume grids");
}
if (geometry_set.has_instances()) {
parts.append(std::to_string(geometry_set.get_instances()->instances_num()) + " instances");
}
if (geometry_set.get_curve_edit_hints()) {
parts.append("curve edit hints");
}
stream << "<GeometrySet: ";
for (const int i : parts.index_range()) {
stream << parts[i];
if (i < parts.size() - 1) {
stream << ", ";
}
}
stream << ">";
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
return stream;
}
void GeometrySet::clear()
{
for (GeometryComponentPtr &component_ptr : components_) {
component_ptr.reset();
}
}
void GeometrySet::ensure_owns_direct_data()
{
for (GeometryComponentPtr &component_ptr : components_) {
if (!component_ptr) {
continue;
}
if (component_ptr->owns_direct_data()) {
continue;
}
GeometryComponent &component_for_write = this->get_component_for_write(component_ptr->type());
component_for_write.ensure_owns_direct_data();
}
}
Geometry Nodes: add simulation support This adds support for building simulations with geometry nodes. A new `Simulation Input` and `Simulation Output` node allow maintaining a simulation state across multiple frames. Together these two nodes form a `simulation zone` which contains all the nodes that update the simulation state from one frame to the next. A new simulation zone can be added via the menu (`Simulation > Simulation Zone`) or with the node add search. The simulation state contains a geometry by default. However, it is possible to add multiple geometry sockets as well as other socket types. Currently, field inputs are evaluated and stored for the preceding geometry socket in the order that the sockets are shown. Simulation state items can be added by linking one of the empty sockets to something else. In the sidebar, there is a new panel that allows adding, removing and reordering these sockets. The simulation nodes behave as follows: * On the first frame, the inputs of the `Simulation Input` node are evaluated to initialize the simulation state. In later frames these sockets are not evaluated anymore. The `Delta Time` at the first frame is zero, but the simulation zone is still evaluated. * On every next frame, the `Simulation Input` node outputs the simulation state of the previous frame. Nodes in the simulation zone can edit that data in arbitrary ways, also taking into account the `Delta Time`. The new simulation state has to be passed to the `Simulation Output` node where it is cached and forwarded. * On a frame that is already cached or baked, the nodes in the simulation zone are not evaluated, because the `Simulation Output` node can return the previously cached data directly. It is not allowed to connect sockets from inside the simulation zone to the outside without going through the `Simulation Output` node. This is a necessary restriction to make caching and sub-frame interpolation work. Links can go into the simulation zone without problems though. Anonymous attributes are not propagated by the simulation nodes unless they are explicitly stored in the simulation state. This is unfortunate, but currently there is no practical and reliable alternative. The core problem is detecting which anonymous attributes will be required for the simulation and afterwards. While we can detect this for the current evaluation, we can't look into the future in time to see what data will be necessary. We intend to make it easier to explicitly pass data through a simulation in the future, even if the simulation is in a nested node group. There is a new `Simulation Nodes` panel in the physics tab in the properties editor. It allows baking all simulation zones on the selected objects. The baking options are intentially kept at a minimum for this MVP. More features for simulation baking as well as baking in general can be expected to be added separately. All baked data is stored on disk in a folder next to the .blend file. #106937 describes how baking is implemented in more detail. Volumes can not be baked yet and materials are lost during baking for now. Packing the baked data into the .blend file is not yet supported. The timeline indicates which frames are currently cached, baked or cached but invalidated by user-changes. Simulation input and output nodes are internally linked together by their `bNode.identifier` which stays the same even if the node name changes. They are generally added and removed together. However, there are still cases where "dangling" simulation nodes can be created currently. Those generally don't cause harm, but would be nice to avoid this in more cases in the future. Co-authored-by: Hans Goudey <h.goudey@me.com> Co-authored-by: Lukas Tönne <lukas@blender.org> Pull Request: https://projects.blender.org/blender/blender/pulls/104924
2023-05-03 13:18:51 +02:00
void GeometrySet::ensure_owns_all_data()
{
if (Instances *instances = this->get_instances_for_write()) {
instances->ensure_geometry_instances();
}
this->ensure_owns_direct_data();
}
Geometry Nodes: support for geometry instancing Previously, the Point Instance node in geometry nodes could only instance existing objects or collections. The reason was that large parts of Blender worked under the assumption that objects are the main unit of instancing. Now we also want to instance geometry within an object, so a slightly larger refactor was necessary. This should not affect files that do not use the new kind of instances. The main change is a redefinition of what "instanced data" is. Now, an instances is a cow-object + object-data (the geometry). This can be nicely seen in `struct DupliObject`. This allows the same object to generate multiple geometries of different types which can be instanced individually. A nice side effect of this refactor is that having multiple geometry components is not a special case in the depsgraph object iterator anymore, because those components are integrated with the `DupliObject` system. Unfortunately, different systems that work with instances in Blender (e.g. render engines and exporters) often work under the assumption that objects are the main unit of instancing. So those have to be updated as well to be able to handle the new instances. This patch updates Cycles, EEVEE and other viewport engines. Exporters have not been updated yet. Some minimal (not master-ready) changes to update the obj and alembic exporters can be found in P2336 and P2335. Different file formats may want to handle these new instances in different ways. For users, the only thing that changed is that the Point Instance node now has a geometry mode. This also fixes T88454. Differential Revision: https://developer.blender.org/D11841
2021-09-06 18:22:24 +02:00
bool GeometrySet::owns_direct_data() const
{
for (const GeometryComponentPtr &component_ptr : components_) {
if (component_ptr) {
if (!component_ptr->owns_direct_data()) {
return false;
}
Geometry Nodes: support for geometry instancing Previously, the Point Instance node in geometry nodes could only instance existing objects or collections. The reason was that large parts of Blender worked under the assumption that objects are the main unit of instancing. Now we also want to instance geometry within an object, so a slightly larger refactor was necessary. This should not affect files that do not use the new kind of instances. The main change is a redefinition of what "instanced data" is. Now, an instances is a cow-object + object-data (the geometry). This can be nicely seen in `struct DupliObject`. This allows the same object to generate multiple geometries of different types which can be instanced individually. A nice side effect of this refactor is that having multiple geometry components is not a special case in the depsgraph object iterator anymore, because those components are integrated with the `DupliObject` system. Unfortunately, different systems that work with instances in Blender (e.g. render engines and exporters) often work under the assumption that objects are the main unit of instancing. So those have to be updated as well to be able to handle the new instances. This patch updates Cycles, EEVEE and other viewport engines. Exporters have not been updated yet. Some minimal (not master-ready) changes to update the obj and alembic exporters can be found in P2336 and P2335. Different file formats may want to handle these new instances in different ways. For users, the only thing that changed is that the Point Instance node now has a geometry mode. This also fixes T88454. Differential Revision: https://developer.blender.org/D11841
2021-09-06 18:22:24 +02:00
}
}
return true;
}
const Mesh *GeometrySet::get_mesh() const
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
const MeshComponent *component = this->get_component<MeshComponent>();
return (component == nullptr) ? nullptr : component->get();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
bool GeometrySet::has_mesh() const
{
const MeshComponent *component = this->get_component<MeshComponent>();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
return component != nullptr && component->has_mesh();
}
const PointCloud *GeometrySet::get_pointcloud() const
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
const PointCloudComponent *component = this->get_component<PointCloudComponent>();
return (component == nullptr) ? nullptr : component->get();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
const Volume *GeometrySet::get_volume() const
{
const VolumeComponent *component = this->get_component<VolumeComponent>();
return (component == nullptr) ? nullptr : component->get();
}
const Curves *GeometrySet::get_curves() const
{
const CurveComponent *component = this->get_component<CurveComponent>();
return (component == nullptr) ? nullptr : component->get();
}
const Instances *GeometrySet::get_instances() const
{
const InstancesComponent *component = this->get_component<InstancesComponent>();
return (component == nullptr) ? nullptr : component->get();
}
const CurvesEditHints *GeometrySet::get_curve_edit_hints() const
{
const GeometryComponentEditData *component = this->get_component<GeometryComponentEditData>();
return (component == nullptr) ? nullptr : component->curves_edit_hints_.get();
}
const GreasePencil *GeometrySet::get_grease_pencil() const
{
const GreasePencilComponent *component = this->get_component<GreasePencilComponent>();
return (component == nullptr) ? nullptr : component->get();
}
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
bool GeometrySet::has_pointcloud() const
{
const PointCloudComponent *component = this->get_component<PointCloudComponent>();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
return component != nullptr && component->has_pointcloud();
}
bool GeometrySet::has_instances() const
{
const InstancesComponent *component = this->get_component<InstancesComponent>();
return component != nullptr && component->get() != nullptr &&
component->get()->instances_num() >= 1;
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
bool GeometrySet::has_volume() const
{
const VolumeComponent *component = this->get_component<VolumeComponent>();
return component != nullptr && component->has_volume();
}
bool GeometrySet::has_curves() const
{
const CurveComponent *component = this->get_component<CurveComponent>();
return component != nullptr && component->has_curves();
}
bool GeometrySet::has_realized_data() const
{
for (const GeometryComponentPtr &component_ptr : components_) {
if (component_ptr) {
if (component_ptr->type() != GeometryComponent::Type::Instance) {
return true;
}
}
}
return false;
}
bool GeometrySet::has_grease_pencil() const
{
const GreasePencilComponent *component = this->get_component<GreasePencilComponent>();
return component != nullptr && component->has_grease_pencil();
}
bool GeometrySet::is_empty() const
{
return !(this->has_mesh() || this->has_curves() || this->has_pointcloud() ||
this->has_volume() || this->has_instances() || this->has_grease_pencil());
}
GeometrySet GeometrySet::from_mesh(Mesh *mesh, GeometryOwnershipType ownership)
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
GeometrySet geometry_set;
geometry_set.replace_mesh(mesh, ownership);
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
return geometry_set;
}
GeometrySet GeometrySet::from_volume(Volume *volume, GeometryOwnershipType ownership)
{
GeometrySet geometry_set;
geometry_set.replace_volume(volume, ownership);
return geometry_set;
}
GeometrySet GeometrySet::from_pointcloud(PointCloud *pointcloud, GeometryOwnershipType ownership)
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
GeometrySet geometry_set;
geometry_set.replace_pointcloud(pointcloud, ownership);
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
return geometry_set;
}
GeometrySet GeometrySet::from_curves(Curves *curves, GeometryOwnershipType ownership)
{
GeometrySet geometry_set;
geometry_set.replace_curves(curves, ownership);
return geometry_set;
}
GeometrySet GeometrySet::from_instances(Instances *instances, GeometryOwnershipType ownership)
{
GeometrySet geometry_set;
geometry_set.replace_instances(instances, ownership);
return geometry_set;
}
GeometrySet GeometrySet::from_grease_pencil(GreasePencil *grease_pencil,
GeometryOwnershipType ownership)
{
GeometrySet geometry_set;
geometry_set.replace_grease_pencil(grease_pencil, ownership);
return geometry_set;
}
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
void GeometrySet::replace_mesh(Mesh *mesh, GeometryOwnershipType ownership)
{
if (mesh == nullptr) {
this->remove<MeshComponent>();
return;
}
if (mesh == this->get_mesh()) {
return;
}
this->remove<MeshComponent>();
MeshComponent &component = this->get_component_for_write<MeshComponent>();
component.replace(mesh, ownership);
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
void GeometrySet::replace_curves(Curves *curves, GeometryOwnershipType ownership)
{
if (curves == nullptr) {
this->remove<CurveComponent>();
return;
}
if (curves == this->get_curves()) {
return;
}
this->remove<CurveComponent>();
CurveComponent &component = this->get_component_for_write<CurveComponent>();
component.replace(curves, ownership);
}
void GeometrySet::replace_instances(Instances *instances, GeometryOwnershipType ownership)
{
if (instances == nullptr) {
this->remove<InstancesComponent>();
return;
}
if (instances == this->get_instances()) {
return;
}
this->remove<InstancesComponent>();
InstancesComponent &component = this->get_component_for_write<InstancesComponent>();
component.replace(instances, ownership);
}
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
void GeometrySet::replace_pointcloud(PointCloud *pointcloud, GeometryOwnershipType ownership)
{
if (pointcloud == nullptr) {
this->remove<PointCloudComponent>();
return;
}
if (pointcloud == this->get_pointcloud()) {
return;
}
this->remove<PointCloudComponent>();
PointCloudComponent &component = this->get_component_for_write<PointCloudComponent>();
component.replace(pointcloud, ownership);
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
void GeometrySet::replace_volume(Volume *volume, GeometryOwnershipType ownership)
{
if (volume == nullptr) {
this->remove<VolumeComponent>();
return;
}
if (volume == this->get_volume()) {
return;
}
this->remove<VolumeComponent>();
VolumeComponent &component = this->get_component_for_write<VolumeComponent>();
component.replace(volume, ownership);
}
void GeometrySet::replace_grease_pencil(GreasePencil *grease_pencil,
GeometryOwnershipType ownership)
{
if (grease_pencil == nullptr) {
this->remove<GreasePencilComponent>();
return;
}
if (grease_pencil == this->get_grease_pencil()) {
return;
}
this->remove<GreasePencilComponent>();
GreasePencilComponent &component = this->get_component_for_write<GreasePencilComponent>();
component.replace(grease_pencil, ownership);
}
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
Mesh *GeometrySet::get_mesh_for_write()
{
MeshComponent *component = this->get_component_ptr<MeshComponent>();
return component == nullptr ? nullptr : component->get_for_write();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
PointCloud *GeometrySet::get_pointcloud_for_write()
{
PointCloudComponent *component = this->get_component_ptr<PointCloudComponent>();
return component == nullptr ? nullptr : component->get_for_write();
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
Volume *GeometrySet::get_volume_for_write()
{
VolumeComponent *component = this->get_component_ptr<VolumeComponent>();
return component == nullptr ? nullptr : component->get_for_write();
}
Curves *GeometrySet::get_curves_for_write()
{
CurveComponent *component = this->get_component_ptr<CurveComponent>();
return component == nullptr ? nullptr : component->get_for_write();
}
Instances *GeometrySet::get_instances_for_write()
{
InstancesComponent *component = this->get_component_ptr<InstancesComponent>();
return component == nullptr ? nullptr : component->get_for_write();
}
CurvesEditHints *GeometrySet::get_curve_edit_hints_for_write()
{
if (!this->has<GeometryComponentEditData>()) {
return nullptr;
}
GeometryComponentEditData &component =
this->get_component_for_write<GeometryComponentEditData>();
return component.curves_edit_hints_.get();
}
GreasePencil *GeometrySet::get_grease_pencil_for_write()
{
GreasePencilComponent *component = this->get_component_ptr<GreasePencilComponent>();
return component == nullptr ? nullptr : component->get_for_write();
}
void GeometrySet::attribute_foreach(const Span<GeometryComponent::Type> component_types,
const bool include_instances,
const AttributeForeachCallback callback) const
{
for (const GeometryComponent::Type component_type : component_types) {
if (!this->has(component_type)) {
continue;
}
const GeometryComponent &component = *this->get_component(component_type);
Geometry Nodes: new geometry attribute API Currently, there are two attribute API. The first, defined in `BKE_attribute.h` is accessible from RNA and C code. The second is implemented with `GeometryComponent` and is only accessible in C++ code. The second is widely used, but only being accessible through the `GeometrySet` API makes it awkward to use, and even impossible for types that don't correspond directly to a geometry component like `CurvesGeometry`. This patch adds a new attribute API, designed to replace the `GeometryComponent` attribute API now, and to eventually replace or be the basis of the other one. The basic idea is that there is an `AttributeAccessor` class that allows code to interact with a set of attributes owned by some geometry. The accessor itself has no ownership. `AttributeAccessor` is a simple type that can be passed around by value. That makes it easy to return it from functions and to store it in containers. For const-correctness, there is also a `MutableAttributeAccessor` that allows changing individual and can add or remove attributes. Currently, `AttributeAccessor` is composed of two pointers. The first is a pointer to the owner of the attribute data. The second is a pointer to a struct with function pointers, that is similar to a virtual function table. The functions know how to access attributes on the owner. The actual attribute access for geometries is still implemented with the `AttributeProvider` pattern, which makes it easy to support different sources of attributes on a geometry and simplifies dealing with built-in attributes. There are different ways to get an attribute accessor for a geometry: * `GeometryComponent.attributes()` * `CurvesGeometry.attributes()` * `bke::mesh_attributes(const Mesh &)` * `bke::pointcloud_attributes(const PointCloud &)` All of these also have a `_for_write` variant that returns a `MutabelAttributeAccessor`. Differential Revision: https://developer.blender.org/D15280
2022-07-08 16:16:56 +02:00
const std::optional<AttributeAccessor> attributes = component.attributes();
if (attributes.has_value()) {
attributes->for_all(
[&](const AttributeIDRef &attribute_id, const AttributeMetaData &meta_data) {
callback(attribute_id, meta_data, component);
return true;
});
}
}
if (include_instances && this->has_instances()) {
const Instances &instances = *this->get_instances();
instances.foreach_referenced_geometry([&](const GeometrySet &instance_geometry_set) {
instance_geometry_set.attribute_foreach(component_types, include_instances, callback);
});
}
}
void GeometrySet::propagate_attributes_from_layer_to_instances(
const AttributeAccessor src_attributes,
MutableAttributeAccessor dst_attributes,
const AnonymousAttributePropagationInfo &propagation_info)
{
src_attributes.for_all([&](const AttributeIDRef &id, const AttributeMetaData meta_data) {
if (id.is_anonymous() && !propagation_info.propagate(id.anonymous_id())) {
return true;
}
const GAttributeReader src = src_attributes.lookup(id, ATTR_DOMAIN_LAYER);
if (src.sharing_info && src.varray.is_span()) {
const AttributeInitShared init(src.varray.get_internal_span().data(), *src.sharing_info);
if (dst_attributes.add(id, ATTR_DOMAIN_INSTANCE, meta_data.data_type, init)) {
return true;
}
}
GSpanAttributeWriter dst = dst_attributes.lookup_or_add_for_write_only_span(
id, ATTR_DOMAIN_INSTANCE, meta_data.data_type);
if (!dst) {
return true;
}
array_utils::copy(src.varray, dst.span);
dst.finish();
return true;
});
}
void GeometrySet::gather_attributes_for_propagation(
const Span<GeometryComponent::Type> component_types,
const GeometryComponent::Type dst_component_type,
bool include_instances,
const AnonymousAttributePropagationInfo &propagation_info,
Map<AttributeIDRef, AttributeKind> &r_attributes) const
{
/* Only needed right now to check if an attribute is built-in on this component type.
* TODO: Get rid of the dummy component. */
BLI: support weak users and version in implicit sharing info The main goal of these changes is to support checking if some data has been changed over time. This is used by the WIP simulation nodes during baking to detect which attributes have to be stored in every frame because they have changed. By using a combination of a weak user count and a version counter, it is possible to detect that an attribute (or any data controlled by implicit sharing) has not been changed with O(1) memory and time. It's still possible that the data has been changed multiple times and is the same in the end and beginning of course. That wouldn't be detected using this mechanism. The `ImplicitSharingInfo` struct has a new weak user count. A weak reference is one that does not keep the referenced data alive, but makes sure that the `ImplicitSharingInfo` itself is not deleted. If some piece of data has one strong and multiple weak users, it is still mutable. If the strong user count goes down to zero, the referenced data is freed. Remaining weak users can check for this condition using `is_expired`. This is a bit similar to `std::weak_ptr` but there is an important difference: a weak user can not become a strong user while one can create a `shared_ptr` from a `weak_ptr`. This restriction is necessary, because some code might be changing the referenced data assuming that it is the only owner. If another thread suddenly adds a new owner, the data would be shared again and the first thread would not have been allowed to modify the data in the first place. There is also a new integer version counter in `ImplicitSharingInfo`. It is incremented whenever some code wants to modify the referenced data. Obviously, this can only be done when the data is not shared because then it would be immutable. By comparing an old and new version number of the same sharing info, one can check if the data has been modified. One has to keep a weak reference to the sharing info together with the old version number to ensure that the new sharing info is still the same as the old one. Without this, it can happen that the sharing info was freed and a new one was allocated at the same pointer address. Using a strong reference for this purpose does not work, because then the data would never be modified because it's shared.
2023-04-28 12:03:42 +02:00
const GeometryComponentPtr dummy_component = GeometryComponent::create(dst_component_type);
this->attribute_foreach(
component_types,
include_instances,
[&](const AttributeIDRef &attribute_id,
const AttributeMetaData &meta_data,
const GeometryComponent &component) {
Geometry Nodes: new geometry attribute API Currently, there are two attribute API. The first, defined in `BKE_attribute.h` is accessible from RNA and C code. The second is implemented with `GeometryComponent` and is only accessible in C++ code. The second is widely used, but only being accessible through the `GeometrySet` API makes it awkward to use, and even impossible for types that don't correspond directly to a geometry component like `CurvesGeometry`. This patch adds a new attribute API, designed to replace the `GeometryComponent` attribute API now, and to eventually replace or be the basis of the other one. The basic idea is that there is an `AttributeAccessor` class that allows code to interact with a set of attributes owned by some geometry. The accessor itself has no ownership. `AttributeAccessor` is a simple type that can be passed around by value. That makes it easy to return it from functions and to store it in containers. For const-correctness, there is also a `MutableAttributeAccessor` that allows changing individual and can add or remove attributes. Currently, `AttributeAccessor` is composed of two pointers. The first is a pointer to the owner of the attribute data. The second is a pointer to a struct with function pointers, that is similar to a virtual function table. The functions know how to access attributes on the owner. The actual attribute access for geometries is still implemented with the `AttributeProvider` pattern, which makes it easy to support different sources of attributes on a geometry and simplifies dealing with built-in attributes. There are different ways to get an attribute accessor for a geometry: * `GeometryComponent.attributes()` * `CurvesGeometry.attributes()` * `bke::mesh_attributes(const Mesh &)` * `bke::pointcloud_attributes(const PointCloud &)` All of these also have a `_for_write` variant that returns a `MutabelAttributeAccessor`. Differential Revision: https://developer.blender.org/D15280
2022-07-08 16:16:56 +02:00
if (component.attributes()->is_builtin(attribute_id)) {
if (!dummy_component->attributes()->is_builtin(attribute_id)) {
/* Don't propagate built-in attributes that are not built-in on the destination
* component. */
return;
}
}
if (meta_data.data_type == CD_PROP_STRING) {
/* Propagating string attributes is not supported yet. */
return;
}
if (attribute_id.is_anonymous() &&
!propagation_info.propagate(attribute_id.anonymous_id())) {
return;
}
eAttrDomain domain = meta_data.domain;
if (dst_component_type != GeometryComponent::Type::Instance &&
domain == ATTR_DOMAIN_INSTANCE) {
Geometry Nodes: support instance attributes when realizing instances This patch refactors the instance-realization code and adds new functionality. * Named and anonymous attributes are propagated from instances to the realized geometry. If the same attribute exists on the geometry and on an instance, the attribute on the geometry has precedence. * The id attribute has special handling to avoid creating the same id on many output points. This is necessary to make e.g. the Random Value node work as expected afterwards. Realizing instance attributes has an effect on existing files, especially due to the id attribute. To avoid breaking existing files, the Realize Instances node now has a legacy option that is enabled for all already existing Realize Instances nodes. Removing this legacy behavior does affect some existing files (although not many). We can decide whether it's worth to remove the old behavior as a separate step. This refactor also improves performance when realizing instances. That is mainly due to multi-threading. See D13446 to get the file used for benchmarking. The curve code is not as optimized as it could be yet. That's mainly because the storage for these attributes might change soonish and it wasn't worth optimizing for the current storage format right now. ``` 1,000,000 x mesh vertex: 530 ms -> 130 ms 1,000,000 x simple cube: 1290 ms -> 190 ms 1,000,000 x point: 1000 ms -> 150 ms 1,000,000 x curve spiral: 1740 ms -> 330 ms 1,000,000 x curve line: 1110 ms -> 210 ms 10,000 x subdivided cylinder: 170 ms -> 40 ms 10 x subdivided spiral: 180 ms -> 180 ms ``` Differential Revision: https://developer.blender.org/D13446
2021-12-14 15:57:58 +01:00
domain = ATTR_DOMAIN_POINT;
}
auto add_info = [&](AttributeKind *attribute_kind) {
Geometry Nodes: support instance attributes when realizing instances This patch refactors the instance-realization code and adds new functionality. * Named and anonymous attributes are propagated from instances to the realized geometry. If the same attribute exists on the geometry and on an instance, the attribute on the geometry has precedence. * The id attribute has special handling to avoid creating the same id on many output points. This is necessary to make e.g. the Random Value node work as expected afterwards. Realizing instance attributes has an effect on existing files, especially due to the id attribute. To avoid breaking existing files, the Realize Instances node now has a legacy option that is enabled for all already existing Realize Instances nodes. Removing this legacy behavior does affect some existing files (although not many). We can decide whether it's worth to remove the old behavior as a separate step. This refactor also improves performance when realizing instances. That is mainly due to multi-threading. See D13446 to get the file used for benchmarking. The curve code is not as optimized as it could be yet. That's mainly because the storage for these attributes might change soonish and it wasn't worth optimizing for the current storage format right now. ``` 1,000,000 x mesh vertex: 530 ms -> 130 ms 1,000,000 x simple cube: 1290 ms -> 190 ms 1,000,000 x point: 1000 ms -> 150 ms 1,000,000 x curve spiral: 1740 ms -> 330 ms 1,000,000 x curve line: 1110 ms -> 210 ms 10,000 x subdivided cylinder: 170 ms -> 40 ms 10 x subdivided spiral: 180 ms -> 180 ms ``` Differential Revision: https://developer.blender.org/D13446
2021-12-14 15:57:58 +01:00
attribute_kind->domain = domain;
attribute_kind->data_type = meta_data.data_type;
};
auto modify_info = [&](AttributeKind *attribute_kind) {
attribute_kind->domain = bke::attribute_domain_highest_priority(
Geometry Nodes: support instance attributes when realizing instances This patch refactors the instance-realization code and adds new functionality. * Named and anonymous attributes are propagated from instances to the realized geometry. If the same attribute exists on the geometry and on an instance, the attribute on the geometry has precedence. * The id attribute has special handling to avoid creating the same id on many output points. This is necessary to make e.g. the Random Value node work as expected afterwards. Realizing instance attributes has an effect on existing files, especially due to the id attribute. To avoid breaking existing files, the Realize Instances node now has a legacy option that is enabled for all already existing Realize Instances nodes. Removing this legacy behavior does affect some existing files (although not many). We can decide whether it's worth to remove the old behavior as a separate step. This refactor also improves performance when realizing instances. That is mainly due to multi-threading. See D13446 to get the file used for benchmarking. The curve code is not as optimized as it could be yet. That's mainly because the storage for these attributes might change soonish and it wasn't worth optimizing for the current storage format right now. ``` 1,000,000 x mesh vertex: 530 ms -> 130 ms 1,000,000 x simple cube: 1290 ms -> 190 ms 1,000,000 x point: 1000 ms -> 150 ms 1,000,000 x curve spiral: 1740 ms -> 330 ms 1,000,000 x curve line: 1110 ms -> 210 ms 10,000 x subdivided cylinder: 170 ms -> 40 ms 10 x subdivided spiral: 180 ms -> 180 ms ``` Differential Revision: https://developer.blender.org/D13446
2021-12-14 15:57:58 +01:00
{attribute_kind->domain, domain});
attribute_kind->data_type = bke::attribute_data_type_highest_complexity(
{attribute_kind->data_type, meta_data.data_type});
};
r_attributes.add_or_modify(attribute_id, add_info, modify_info);
});
}
static void gather_component_types_recursive(const GeometrySet &geometry_set,
const bool include_instances,
const bool ignore_empty,
Vector<GeometryComponent::Type> &r_types)
{
for (const GeometryComponent *component : geometry_set.get_components()) {
if (ignore_empty) {
if (component->is_empty()) {
continue;
}
}
r_types.append_non_duplicates(component->type());
}
if (!include_instances) {
return;
}
const Instances *instances = geometry_set.get_instances();
if (instances == nullptr) {
return;
}
instances->foreach_referenced_geometry([&](const GeometrySet &instance_geometry_set) {
gather_component_types_recursive(
instance_geometry_set, include_instances, ignore_empty, r_types);
});
}
Vector<GeometryComponent::Type> GeometrySet::gather_component_types(const bool include_instances,
bool ignore_empty) const
{
Vector<GeometryComponent::Type> types;
gather_component_types_recursive(*this, include_instances, ignore_empty, types);
return types;
}
static void gather_mutable_geometry_sets(GeometrySet &geometry_set,
Vector<GeometrySet *> &r_geometry_sets)
{
r_geometry_sets.append(&geometry_set);
if (!geometry_set.has_instances()) {
return;
}
/* In the future this can be improved by deduplicating instance references across different
* instances. */
Instances &instances = *geometry_set.get_instances_for_write();
instances.ensure_geometry_instances();
for (const int handle : instances.references().index_range()) {
if (instances.references()[handle].type() == InstanceReference::Type::GeometrySet) {
GeometrySet &instance_geometry = instances.geometry_set_from_reference(handle);
gather_mutable_geometry_sets(instance_geometry, r_geometry_sets);
}
}
}
void GeometrySet::modify_geometry_sets(ForeachSubGeometryCallback callback)
{
Vector<GeometrySet *> geometry_sets;
gather_mutable_geometry_sets(*this, geometry_sets);
if (geometry_sets.size() == 1) {
/* Avoid possible overhead and a large call stack when multithreading is pointless. */
callback(*geometry_sets.first());
}
else {
threading::parallel_for_each(geometry_sets,
[&](GeometrySet *geometry_set) { callback(*geometry_set); });
}
}
bool object_has_geometry_set_instances(const Object &object)
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
{
const GeometrySet *geometry_set = object.runtime.geometry_set_eval;
Geometry Nodes: support for geometry instancing Previously, the Point Instance node in geometry nodes could only instance existing objects or collections. The reason was that large parts of Blender worked under the assumption that objects are the main unit of instancing. Now we also want to instance geometry within an object, so a slightly larger refactor was necessary. This should not affect files that do not use the new kind of instances. The main change is a redefinition of what "instanced data" is. Now, an instances is a cow-object + object-data (the geometry). This can be nicely seen in `struct DupliObject`. This allows the same object to generate multiple geometries of different types which can be instanced individually. A nice side effect of this refactor is that having multiple geometry components is not a special case in the depsgraph object iterator anymore, because those components are integrated with the `DupliObject` system. Unfortunately, different systems that work with instances in Blender (e.g. render engines and exporters) often work under the assumption that objects are the main unit of instancing. So those have to be updated as well to be able to handle the new instances. This patch updates Cycles, EEVEE and other viewport engines. Exporters have not been updated yet. Some minimal (not master-ready) changes to update the obj and alembic exporters can be found in P2336 and P2335. Different file formats may want to handle these new instances in different ways. For users, the only thing that changed is that the Point Instance node now has a geometry mode. This also fixes T88454. Differential Revision: https://developer.blender.org/D11841
2021-09-06 18:22:24 +02:00
if (geometry_set == nullptr) {
return false;
}
for (const GeometryComponent *component : geometry_set->get_components()) {
if (component->is_empty()) {
continue;
}
const GeometryComponent::Type type = component->type();
bool is_instance = false;
switch (type) {
case GeometryComponent::Type::Mesh:
is_instance = object.type != OB_MESH;
break;
case GeometryComponent::Type::PointCloud:
is_instance = object.type != OB_POINTCLOUD;
break;
case GeometryComponent::Type::Instance:
is_instance = true;
break;
case GeometryComponent::Type::Volume:
is_instance = object.type != OB_VOLUME;
break;
case GeometryComponent::Type::Curve:
is_instance = !ELEM(object.type, OB_CURVES_LEGACY, OB_FONT);
break;
case GeometryComponent::Type::Edit:
break;
case GeometryComponent::Type::GreasePencil:
is_instance = object.type != OB_GREASE_PENCIL;
break;
}
if (is_instance) {
return true;
}
Geometry Nodes: support for geometry instancing Previously, the Point Instance node in geometry nodes could only instance existing objects or collections. The reason was that large parts of Blender worked under the assumption that objects are the main unit of instancing. Now we also want to instance geometry within an object, so a slightly larger refactor was necessary. This should not affect files that do not use the new kind of instances. The main change is a redefinition of what "instanced data" is. Now, an instances is a cow-object + object-data (the geometry). This can be nicely seen in `struct DupliObject`. This allows the same object to generate multiple geometries of different types which can be instanced individually. A nice side effect of this refactor is that having multiple geometry components is not a special case in the depsgraph object iterator anymore, because those components are integrated with the `DupliObject` system. Unfortunately, different systems that work with instances in Blender (e.g. render engines and exporters) often work under the assumption that objects are the main unit of instancing. So those have to be updated as well to be able to handle the new instances. This patch updates Cycles, EEVEE and other viewport engines. Exporters have not been updated yet. Some minimal (not master-ready) changes to update the obj and alembic exporters can be found in P2336 and P2335. Different file formats may want to handle these new instances in different ways. For users, the only thing that changed is that the Point Instance node now has a geometry mode. This also fixes T88454. Differential Revision: https://developer.blender.org/D11841
2021-09-06 18:22:24 +02:00
}
return false;
Geometry Nodes: initial scattering and geometry nodes This is the initial merge from the geometry-nodes branch. Nodes: * Attribute Math * Boolean * Edge Split * Float Compare * Object Info * Point Distribute * Point Instance * Random Attribute * Random Float * Subdivision Surface * Transform * Triangulate It includes the initial evaluation of geometry node groups in the Geometry Nodes modifier. Notes on the Generic attribute access API The API adds an indirection for attribute access. That has the following benefits: * Most code does not have to care about how an attribute is stored internally. This is mainly necessary, because we have to deal with "legacy" attributes such as vertex weights and attributes that are embedded into other structs such as vertex positions. * When reading from an attribute, we generally don't care what domain the attribute is stored on. So we want to abstract away the interpolation that that adapts attributes from one domain to another domain (this is not actually implemented yet). Other possible improvements for later iterations include: * Actually implement interpolation between domains. * Don't use inheritance for the different attribute types. A single class for read access and one for write access might be enough, because we know all the ways in which attributes are stored internally. We don't want more different internal structures in the future. On the contrary, ideally we can consolidate the different storage formats in the future to reduce the need for this indirection. * Remove the need for heap allocations when creating attribute accessors. It includes commits from: * Dalai Felinto * Hans Goudey * Jacques Lucke * Léo Depoix
2020-12-02 13:25:25 +01:00
}
/** \} */
2023-07-09 21:40:17 +10:00
} // namespace blender::bke