This makes the nodes look more consistent with the rest of the UI
by using the same split with right aligned labels as the property editor
and elsewhere. Additionally, for consistency, the "Type" part of some
dropdowns is removed. It already wasn't displayed everywhere, and
it gets redundant quite quickly.
Add the Simple subdivision option to Geometry nodes, as a new node
instead of part of the existing subdivision node because of future
backend changes to the Simple option. (See T85584)
https://developer.blender.org/D10409
If the axes are aligned in auto pivot mode then the rotation axis would be (0,0,0).
We now fall back to the x axis in this case. If that fails, we fall back to the y axis.
Differential Revision: https://developer.blender.org/D10466
Previously, the density was set per point. That implies that when a
point has a non-zero weight, points might be distributed in all
connected polygons. By specifying the density per corner, this
limitation is removed. Note, per-point density maps (such as vertex
groups) can still be used. They will be adapted to the corner domain
without loss of information.
Differential Revision: https://developer.blender.org/D10461
The integer mode still needs a random value in a 0 to 1 range, just like
floats. So slightly refactor to let the integer randomization use the
float implementation and then round to an int afterwards.
The `material_index` attribute can adjust which material in the list
will be applied to each face of the mesh. There are two new things
about this attribute that haven't been exposed by the attribute API yet.
Each comes with limitations:
1. Integer data type: Most attribute nodes are currently written to use
float data types. This means that they can't write to this attribute
because they can't change the type of a built-in attribute.
2. Polygon domain: This is our first attribute using the polygon domain,
meaning until some of the interpolations are implemented, some
operations may not work as expected.
Currently the two nodes that work with this attribute are Attribute Fill
and Attribute Randomize.
Differential Revision: https://developer.blender.org/D10444
This patch adds icons to the right side of nodes when they encounter a
a problem. When hovered, a tooltip displays describing the encountered
while evaluating the node.
Some examples are: attribute doesn't exist, mesh has no faces,
incorrect attribute type, etc. Exposing more messages to the system
will be an ongoing process. Multiple warnings per node are supported.
The system is implemented somewhat generically so that the basic
structure can also be used to store more information from evaluation
for the interface, like a list of available attributes.
Currently the messages are just button tooltips. They could be styled
differently in the future. Another limitation is that every instance of
a node group in a parent node tree will have the same error messages,
the "evaluation context" used to decide when to display the tooltips
must be extended to support node tree paths.
Differential Revision: https://developer.blender.org/D10290
The vertex weights were actually interpolated correctly. The issue was that
vertex group names were removed from the output geometry set. We have
to keep track of these names separately from the mesh, for legacy reasons.
Vertex group names are not stored on meshes but objects instead.
In an upcoming commit I'll also move the make-instances-real functionality
to this file. This code is not essential to working with geometry sets in general,
so it makes sense to move it to a separate header.
Getting an "ouput" attribute is equivalent to creating an attribute and
then getting a write attribute. Replace the latter with the former for
consistency with other code, and to decrease the used surface area
of the attribute API to hopefully facilitate future cleanup.
This commit adds a drop-down to the attribute randomize node to support
a few operations on the values of existing attributes: "Replace/Create"
(the existing behavior), "Add", "Subtract", and "Multiply".
At this point, the operations are limited by what is simple to implement.
More could be added in the future, but there isn't a strong use case
for more complex operations anyway, and a second math node can be used.
Differential Revision: https://developer.blender.org/D10269
Currently every attribute node assumes that the attribute exists on the
"points" domain, so it generally isn't possible to work with attributes
on other domains like edges, polygons, and corners.
This commit adds a heuristic to each attribute node to determine the
correct domain for the result attribute. In general, it works like this:
- If the output attribute already exists, use that domain.
- Otherwise, use the highest priority domain of the input attributes.
- If none of the inputs are attributes, use the default domain (points).
For the implementation I abstracted the check a bit, but in each
node has a slightly different situation, so we end up with slightly
different `get_result_domain` functions in each node. I think this makes
sense, it keeps the code flexible and more easily understandable.
Note that we might eventually want to expose a domain drop-down to some
of the nodes. But that will be a separate discussion; this commit focuses
on making a more useful choice automatically.
Differential Revision: https://developer.blender.org/D10389
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
This updates the join node to use the new multi-input socket from D10067.
The change just requires slightly changing the arguments of the exec
function, and changing the socket input list.
Note that this commit does not contain the UI changes, it only allows for
more input links, and combines the two sockets into one. The UI changes
will come next.
Reviewed By: Hans Goudey
Differential Revision: https://developer.blender.org/D10069
The span fill was in multithreaded code, so calculated values were
sometimes reset. The fix is to move FLT_MAX fill outside of parallel_for.
Differential Revision: https://developer.blender.org/D10378
These are similar to the regular "Combine XYZ" and "Separate XYZ" nodes,
but they work on attributes. They will make it easier to switch between
vector attributes and float attributes.
Differential Revision: https://developer.blender.org/D10308
This commit moves the property layout callbacks for node types to their
implementation files from `drawnode.c`. This was proposed a while ago in
T75724.
**Benefits**
- Fewer files need to be changed when adding a new node.
- Makes it possible to reuse functions from the node's implementation
in the layout code.
- Except for RNA, all of the node "inputs" are in the same place.
- Code gets shorter overall, avoids the large switch statements.
**Downsides**
- Requires including two UI headers.
- Requires adding an editors dependency to the nodes folder.
This commit only changes function nodes and geometry nodes, more can be
moved later.
Differential Revision: https://developer.blender.org/D10352
This node takes a volume and generates a mesh on it's "surface".
The surface is defined by a threshold value.
Currently, the node only works on volumes generated by the
Points to Volume node. This limitation will be resolved soonish.
Ref T84605.
Differential Revision: https://developer.blender.org/D10243
When the pivot axis is not set to auto, the node will try to align the rotation
to vector as best as possible, given the selected rotation axis.
Ref T85211.
Differential Revision: https://developer.blender.org/D10292
This node calculates a distance from each point to the closest position
on a target geometry, similar to the vertex weight proximity modifier.
Mapping the output distance to a different range can be done with an
attribute math node after this node.
A drop-down changes whether to calculate distances from points,
edges, or faces. In points mode, the node also calculates distances
from point cloud points.
Design task and use cases: T84842
Differential Revision: https://developer.blender.org/D10154
This node outputs true when geometry nodes is currently evaluated
for the viewport and false for final renders.
Ref T85277.
Differential Revision: https://developer.blender.org/D10302
Implements a node to get collection objects.
These objects are then passed along as instances in the node tree.
Follow up tasks:
Multiple nodes does not support instancing yet: T85159
Changing collection offset does not trigger a refresh: T85274
Reviewed By: Jacques, Dalai, Hans
Differential Revision: http://developer.blender.org/D10151
The issue was that the `offset` in `dst_span[offset]` was out of bounds
when the domain size is 0. The fix is to simply skip copying attributes
in that case.
This adds the ability to use all the math operations in the regular
utility "Math" node. The code is quite similar to the attribute vector
math node, with the simplification that the result is always a float.
Differential Revision: https://developer.blender.org/D10199
Use transform matrices instead of loc, rot, scale variables to store instance transforms.
Reviewed By: JacquesLucke
Differential Revision: http://developer.blender.org/D10211
This implements a new geometry node based on T84606.
It is the first node that generates a `VolumeComponent`.
Differential Revision: https://developer.blender.org/D10169
This just implements a todo with a utility function that didn't exist
at the time. For example, if one geometry has a "scale" attribute with
a float type and another has a "scale" attribute with a vector type,
the vector type will be used for the resulting geometry.
Differential Revision: https://developer.blender.org/D10206
Hans noticed that these dirty flags are only used for normals currently
and that the edge flag is not used at all. This patch still applies the
"entire" fix with all four flags.
Differential Revision: https://developer.blender.org/D10193
We will need to expand this node soon to add weight/count for different
elements inside the collection. For that it is better to have the node
to use its own DNA.
