f094b4fa08
The crash happened when the density in the Point Distribute node was above zero but so small, that no point was generated. In this case, there was a point cloud component, but the point cloud was empty, making some attributes unavailable. One could also make more attributes available in this case, but that can be done separately if necessary.
2172 lines
73 KiB
C++
2172 lines
73 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <utility>
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#include "BKE_attribute_access.hh"
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#include "BKE_attribute_math.hh"
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#include "BKE_customdata.h"
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#include "BKE_deform.h"
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#include "BKE_geometry_set.hh"
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#include "BKE_mesh.h"
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#include "BKE_pointcloud.h"
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#include "DNA_mesh_types.h"
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#include "DNA_meshdata_types.h"
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#include "DNA_pointcloud_types.h"
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#include "BLI_color.hh"
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#include "BLI_float2.hh"
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#include "BLI_span.hh"
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#include "CLG_log.h"
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#include "NOD_node_tree_multi_function.hh"
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static CLG_LogRef LOG = {"bke.attribute_access"};
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using blender::float3;
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using blender::Set;
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using blender::StringRef;
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using blender::StringRefNull;
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using blender::bke::ReadAttributePtr;
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using blender::bke::WriteAttributePtr;
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using blender::fn::GMutableSpan;
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/* Can't include BKE_object_deform.h right now, due to an enum forward declaration. */
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extern "C" MDeformVert *BKE_object_defgroup_data_create(ID *id);
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namespace blender::bke {
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/* -------------------------------------------------------------------- */
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/** \name Attribute Accessor implementations
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* \{ */
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ReadAttribute::~ReadAttribute()
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{
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if (array_is_temporary_ && array_buffer_ != nullptr) {
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cpp_type_.destruct_n(array_buffer_, size_);
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MEM_freeN(array_buffer_);
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}
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}
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fn::GSpan ReadAttribute::get_span() const
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{
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if (size_ == 0) {
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return fn::GSpan(cpp_type_);
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}
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if (array_buffer_ == nullptr) {
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std::lock_guard lock{span_mutex_};
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if (array_buffer_ == nullptr) {
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this->initialize_span();
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}
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}
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return fn::GSpan(cpp_type_, array_buffer_, size_);
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}
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void ReadAttribute::initialize_span() const
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{
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const int element_size = cpp_type_.size();
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array_buffer_ = MEM_mallocN_aligned(size_ * element_size, cpp_type_.alignment(), __func__);
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array_is_temporary_ = true;
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for (const int i : IndexRange(size_)) {
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this->get_internal(i, POINTER_OFFSET(array_buffer_, i * element_size));
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}
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}
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WriteAttribute::~WriteAttribute()
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{
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if (array_should_be_applied_) {
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CLOG_ERROR(&LOG, "Forgot to call apply_span.");
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}
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if (array_is_temporary_ && array_buffer_ != nullptr) {
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cpp_type_.destruct_n(array_buffer_, size_);
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MEM_freeN(array_buffer_);
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}
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}
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/**
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* Get a mutable span that can be modified. When all modifications to the attribute are done,
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* #apply_span should be called. */
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fn::GMutableSpan WriteAttribute::get_span()
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{
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if (size_ == 0) {
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return fn::GMutableSpan(cpp_type_);
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}
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if (array_buffer_ == nullptr) {
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this->initialize_span(false);
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}
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array_should_be_applied_ = true;
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return fn::GMutableSpan(cpp_type_, array_buffer_, size_);
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}
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fn::GMutableSpan WriteAttribute::get_span_for_write_only()
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{
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if (size_ == 0) {
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return fn::GMutableSpan(cpp_type_);
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}
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if (array_buffer_ == nullptr) {
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this->initialize_span(true);
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}
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array_should_be_applied_ = true;
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return fn::GMutableSpan(cpp_type_, array_buffer_, size_);
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}
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void WriteAttribute::initialize_span(const bool write_only)
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{
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const int element_size = cpp_type_.size();
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array_buffer_ = MEM_mallocN_aligned(element_size * size_, cpp_type_.alignment(), __func__);
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array_is_temporary_ = true;
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if (write_only) {
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/* This does nothing for trivial types, but is necessary for general correctness. */
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cpp_type_.construct_default_n(array_buffer_, size_);
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}
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else {
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for (const int i : IndexRange(size_)) {
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this->get(i, POINTER_OFFSET(array_buffer_, i * element_size));
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}
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}
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}
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void WriteAttribute::apply_span()
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{
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this->apply_span_if_necessary();
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array_should_be_applied_ = false;
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}
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void WriteAttribute::apply_span_if_necessary()
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{
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/* Only works when the span has been initialized beforehand. */
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BLI_assert(array_buffer_ != nullptr);
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const int element_size = cpp_type_.size();
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for (const int i : IndexRange(size_)) {
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this->set_internal(i, POINTER_OFFSET(array_buffer_, i * element_size));
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}
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}
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class VertexWeightWriteAttribute final : public WriteAttribute {
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private:
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MDeformVert *dverts_;
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const int dvert_index_;
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public:
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VertexWeightWriteAttribute(MDeformVert *dverts, const int totvert, const int dvert_index)
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: WriteAttribute(ATTR_DOMAIN_POINT, CPPType::get<float>(), totvert),
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dverts_(dverts),
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dvert_index_(dvert_index)
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{
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}
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void get_internal(const int64_t index, void *r_value) const override
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{
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get_internal(dverts_, dvert_index_, index, r_value);
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}
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void set_internal(const int64_t index, const void *value) override
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{
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MDeformWeight *weight = BKE_defvert_ensure_index(&dverts_[index], dvert_index_);
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weight->weight = *reinterpret_cast<const float *>(value);
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}
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static void get_internal(const MDeformVert *dverts,
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const int dvert_index,
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const int64_t index,
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void *r_value)
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{
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if (dverts == nullptr) {
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*(float *)r_value = 0.0f;
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return;
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}
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const MDeformVert &dvert = dverts[index];
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for (const MDeformWeight &weight : Span(dvert.dw, dvert.totweight)) {
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if (weight.def_nr == dvert_index) {
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*(float *)r_value = weight.weight;
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return;
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}
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}
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*(float *)r_value = 0.0f;
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}
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};
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class VertexWeightReadAttribute final : public ReadAttribute {
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private:
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const MDeformVert *dverts_;
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const int dvert_index_;
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public:
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VertexWeightReadAttribute(const MDeformVert *dverts, const int totvert, const int dvert_index)
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: ReadAttribute(ATTR_DOMAIN_POINT, CPPType::get<float>(), totvert),
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dverts_(dverts),
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dvert_index_(dvert_index)
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{
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}
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void get_internal(const int64_t index, void *r_value) const override
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{
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VertexWeightWriteAttribute::get_internal(dverts_, dvert_index_, index, r_value);
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}
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};
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template<typename T> class ArrayWriteAttribute final : public WriteAttribute {
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private:
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MutableSpan<T> data_;
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public:
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ArrayWriteAttribute(AttributeDomain domain, MutableSpan<T> data)
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: WriteAttribute(domain, CPPType::get<T>(), data.size()), data_(data)
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{
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}
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void get_internal(const int64_t index, void *r_value) const override
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{
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new (r_value) T(data_[index]);
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}
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void set_internal(const int64_t index, const void *value) override
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{
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data_[index] = *reinterpret_cast<const T *>(value);
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}
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void initialize_span(const bool UNUSED(write_only)) override
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{
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array_buffer_ = data_.data();
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array_is_temporary_ = false;
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}
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void apply_span_if_necessary() override
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{
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/* Do nothing, because the span contains the attribute itself already. */
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}
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};
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/* This is used by the #OutputAttributePtr class. */
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class TemporaryWriteAttribute final : public WriteAttribute {
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public:
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GMutableSpan data;
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GeometryComponent &component;
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std::string final_name;
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TemporaryWriteAttribute(AttributeDomain domain,
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GMutableSpan data,
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GeometryComponent &component,
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std::string final_name)
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: WriteAttribute(domain, data.type(), data.size()),
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data(data),
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component(component),
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final_name(std::move(final_name))
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{
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}
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~TemporaryWriteAttribute() override
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{
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if (data.data() != nullptr) {
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cpp_type_.destruct_n(data.data(), data.size());
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MEM_freeN(data.data());
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}
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}
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void get_internal(const int64_t index, void *r_value) const override
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{
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data.type().copy_to_uninitialized(data[index], r_value);
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}
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void set_internal(const int64_t index, const void *value) override
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{
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data.type().copy_to_initialized(value, data[index]);
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}
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void initialize_span(const bool UNUSED(write_only)) override
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{
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array_buffer_ = data.data();
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array_is_temporary_ = false;
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}
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void apply_span_if_necessary() override
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{
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/* Do nothing, because the span contains the attribute itself already. */
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}
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};
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template<typename T> class ArrayReadAttribute final : public ReadAttribute {
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private:
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Span<T> data_;
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public:
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ArrayReadAttribute(AttributeDomain domain, Span<T> data)
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: ReadAttribute(domain, CPPType::get<T>(), data.size()), data_(data)
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{
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}
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void get_internal(const int64_t index, void *r_value) const override
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{
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new (r_value) T(data_[index]);
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}
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void initialize_span() const override
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{
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/* The data will not be modified, so this const_cast is fine. */
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array_buffer_ = const_cast<T *>(data_.data());
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array_is_temporary_ = false;
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}
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};
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template<typename T> class OwnedArrayReadAttribute final : public ReadAttribute {
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private:
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Array<T> data_;
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public:
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OwnedArrayReadAttribute(AttributeDomain domain, Array<T> data)
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: ReadAttribute(domain, CPPType::get<T>(), data.size()), data_(std::move(data))
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{
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}
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void get_internal(const int64_t index, void *r_value) const override
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{
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new (r_value) T(data_[index]);
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}
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void initialize_span() const override
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{
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/* The data will not be modified, so this const_cast is fine. */
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array_buffer_ = const_cast<T *>(data_.data());
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array_is_temporary_ = false;
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}
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};
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template<typename StructT,
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typename ElemT,
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ElemT (*GetFunc)(const StructT &),
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void (*SetFunc)(StructT &, const ElemT &)>
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class DerivedArrayWriteAttribute final : public WriteAttribute {
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private:
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MutableSpan<StructT> data_;
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public:
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DerivedArrayWriteAttribute(AttributeDomain domain, MutableSpan<StructT> data)
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: WriteAttribute(domain, CPPType::get<ElemT>(), data.size()), data_(data)
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{
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}
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void get_internal(const int64_t index, void *r_value) const override
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{
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const StructT &struct_value = data_[index];
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const ElemT value = GetFunc(struct_value);
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new (r_value) ElemT(value);
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}
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void set_internal(const int64_t index, const void *value) override
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{
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StructT &struct_value = data_[index];
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const ElemT &typed_value = *reinterpret_cast<const ElemT *>(value);
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SetFunc(struct_value, typed_value);
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}
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};
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template<typename StructT, typename ElemT, ElemT (*GetFunc)(const StructT &)>
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class DerivedArrayReadAttribute final : public ReadAttribute {
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private:
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Span<StructT> data_;
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public:
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DerivedArrayReadAttribute(AttributeDomain domain, Span<StructT> data)
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: ReadAttribute(domain, CPPType::get<ElemT>(), data.size()), data_(data)
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{
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}
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void get_internal(const int64_t index, void *r_value) const override
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{
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const StructT &struct_value = data_[index];
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const ElemT value = GetFunc(struct_value);
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new (r_value) ElemT(value);
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}
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};
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class ConstantReadAttribute final : public ReadAttribute {
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private:
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void *value_;
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public:
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ConstantReadAttribute(AttributeDomain domain,
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const int64_t size,
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const CPPType &type,
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const void *value)
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: ReadAttribute(domain, type, size)
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{
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value_ = MEM_mallocN_aligned(type.size(), type.alignment(), __func__);
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type.copy_to_uninitialized(value, value_);
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}
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~ConstantReadAttribute() override
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{
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this->cpp_type_.destruct(value_);
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MEM_freeN(value_);
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}
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void get_internal(const int64_t UNUSED(index), void *r_value) const override
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{
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this->cpp_type_.copy_to_uninitialized(value_, r_value);
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}
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void initialize_span() const override
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{
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const int element_size = cpp_type_.size();
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array_buffer_ = MEM_mallocN_aligned(size_ * element_size, cpp_type_.alignment(), __func__);
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array_is_temporary_ = true;
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cpp_type_.fill_uninitialized(value_, array_buffer_, size_);
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}
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};
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class ConvertedReadAttribute final : public ReadAttribute {
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private:
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const CPPType &from_type_;
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const CPPType &to_type_;
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ReadAttributePtr base_attribute_;
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const nodes::DataTypeConversions &conversions_;
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static constexpr int MaxValueSize = 64;
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static constexpr int MaxValueAlignment = 64;
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public:
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ConvertedReadAttribute(ReadAttributePtr base_attribute, const CPPType &to_type)
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: ReadAttribute(base_attribute->domain(), to_type, base_attribute->size()),
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from_type_(base_attribute->cpp_type()),
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to_type_(to_type),
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base_attribute_(std::move(base_attribute)),
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conversions_(nodes::get_implicit_type_conversions())
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{
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if (from_type_.size() > MaxValueSize || from_type_.alignment() > MaxValueAlignment) {
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throw std::runtime_error(
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"type is larger than expected, the buffer size has to be increased");
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}
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}
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void get_internal(const int64_t index, void *r_value) const override
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{
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AlignedBuffer<MaxValueSize, MaxValueAlignment> buffer;
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base_attribute_->get(index, buffer.ptr());
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conversions_.convert(from_type_, to_type_, buffer.ptr(), r_value);
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}
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};
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/** \} */
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const blender::fn::CPPType *custom_data_type_to_cpp_type(const CustomDataType type)
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{
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switch (type) {
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case CD_PROP_FLOAT:
|
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return &CPPType::get<float>();
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|
case CD_PROP_FLOAT2:
|
|
return &CPPType::get<float2>();
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|
case CD_PROP_FLOAT3:
|
|
return &CPPType::get<float3>();
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|
case CD_PROP_INT32:
|
|
return &CPPType::get<int>();
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|
case CD_PROP_COLOR:
|
|
return &CPPType::get<Color4f>();
|
|
case CD_PROP_BOOL:
|
|
return &CPPType::get<bool>();
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|
default:
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|
return nullptr;
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|
}
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return nullptr;
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}
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|
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CustomDataType cpp_type_to_custom_data_type(const blender::fn::CPPType &type)
|
|
{
|
|
if (type.is<float>()) {
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return CD_PROP_FLOAT;
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|
}
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|
if (type.is<float2>()) {
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|
return CD_PROP_FLOAT2;
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|
}
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|
if (type.is<float3>()) {
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|
return CD_PROP_FLOAT3;
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}
|
|
if (type.is<int>()) {
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return CD_PROP_INT32;
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|
}
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if (type.is<Color4f>()) {
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return CD_PROP_COLOR;
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|
}
|
|
if (type.is<bool>()) {
|
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return CD_PROP_BOOL;
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|
}
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return static_cast<CustomDataType>(-1);
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}
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|
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static int attribute_data_type_complexity(const CustomDataType data_type)
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|
{
|
|
switch (data_type) {
|
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case CD_PROP_BOOL:
|
|
return 0;
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case CD_PROP_INT32:
|
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return 1;
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case CD_PROP_FLOAT:
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return 2;
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case CD_PROP_FLOAT2:
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return 3;
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case CD_PROP_FLOAT3:
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return 4;
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case CD_PROP_COLOR:
|
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return 5;
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|
#if 0 /* These attribute types are not supported yet. */
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case CD_MLOOPCOL:
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return 3;
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case CD_PROP_STRING:
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return 6;
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#endif
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default:
|
|
/* Only accept "generic" custom data types used by the attribute system. */
|
|
BLI_assert(false);
|
|
return 0;
|
|
}
|
|
}
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|
|
CustomDataType attribute_data_type_highest_complexity(Span<CustomDataType> data_types)
|
|
{
|
|
int highest_complexity = INT_MIN;
|
|
CustomDataType most_complex_type = CD_PROP_COLOR;
|
|
|
|
for (const CustomDataType data_type : data_types) {
|
|
const int complexity = attribute_data_type_complexity(data_type);
|
|
if (complexity > highest_complexity) {
|
|
highest_complexity = complexity;
|
|
most_complex_type = data_type;
|
|
}
|
|
}
|
|
|
|
return most_complex_type;
|
|
}
|
|
|
|
/**
|
|
* \note Generally the order should mirror the order of the domains
|
|
* established in each component's ComponentAttributeProviders.
|
|
*/
|
|
static int attribute_domain_priority(const AttributeDomain domain)
|
|
{
|
|
switch (domain) {
|
|
#if 0
|
|
case ATTR_DOMAIN_CURVE:
|
|
return 0;
|
|
#endif
|
|
case ATTR_DOMAIN_POLYGON:
|
|
return 1;
|
|
case ATTR_DOMAIN_EDGE:
|
|
return 2;
|
|
case ATTR_DOMAIN_POINT:
|
|
return 3;
|
|
case ATTR_DOMAIN_CORNER:
|
|
return 4;
|
|
default:
|
|
/* Domain not supported in nodes yet. */
|
|
BLI_assert(false);
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Domains with a higher "information density" have a higher priority, in order
|
|
* to choose a domain that will not lose data through domain conversion.
|
|
*/
|
|
AttributeDomain attribute_domain_highest_priority(Span<AttributeDomain> domains)
|
|
{
|
|
int highest_priority = INT_MIN;
|
|
AttributeDomain highest_priority_domain = ATTR_DOMAIN_CORNER;
|
|
|
|
for (const AttributeDomain domain : domains) {
|
|
const int priority = attribute_domain_priority(domain);
|
|
if (priority > highest_priority) {
|
|
highest_priority = priority;
|
|
highest_priority_domain = domain;
|
|
}
|
|
}
|
|
|
|
return highest_priority_domain;
|
|
}
|
|
|
|
/**
|
|
* A #BuiltinAttributeProvider is responsible for exactly one attribute on a geometry component.
|
|
* The attribute is identified by its name and has a fixed domain and type. Builtin attributes do
|
|
* not follow the same loose rules as other attributes, because they are mapped to internal
|
|
* "legacy" data structures. For example, some builtin attributes cannot be deleted. */
|
|
class BuiltinAttributeProvider {
|
|
public:
|
|
/* Some utility enums to avoid hard to read booleans in function calls. */
|
|
enum CreatableEnum {
|
|
Creatable,
|
|
NonCreatable,
|
|
};
|
|
enum WritableEnum {
|
|
Writable,
|
|
Readonly,
|
|
};
|
|
enum DeletableEnum {
|
|
Deletable,
|
|
NonDeletable,
|
|
};
|
|
|
|
protected:
|
|
const std::string name_;
|
|
const AttributeDomain domain_;
|
|
const CustomDataType data_type_;
|
|
const CreatableEnum createable_;
|
|
const WritableEnum writable_;
|
|
const DeletableEnum deletable_;
|
|
|
|
public:
|
|
BuiltinAttributeProvider(std::string name,
|
|
const AttributeDomain domain,
|
|
const CustomDataType data_type,
|
|
const CreatableEnum createable,
|
|
const WritableEnum writable,
|
|
const DeletableEnum deletable)
|
|
: name_(std::move(name)),
|
|
domain_(domain),
|
|
data_type_(data_type),
|
|
createable_(createable),
|
|
writable_(writable),
|
|
deletable_(deletable)
|
|
{
|
|
}
|
|
|
|
virtual ReadAttributePtr try_get_for_read(const GeometryComponent &component) const = 0;
|
|
virtual WriteAttributePtr try_get_for_write(GeometryComponent &component) const = 0;
|
|
virtual bool try_delete(GeometryComponent &component) const = 0;
|
|
virtual bool try_create(GeometryComponent &UNUSED(component)) const = 0;
|
|
virtual bool exists(const GeometryComponent &component) const = 0;
|
|
|
|
StringRefNull name() const
|
|
{
|
|
return name_;
|
|
}
|
|
|
|
AttributeDomain domain() const
|
|
{
|
|
return domain_;
|
|
}
|
|
|
|
CustomDataType data_type() const
|
|
{
|
|
return data_type_;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* A #DynamicAttributesProvider manages a set of named attributes on a geometry component. Each
|
|
* attribute has a name, domain and type.
|
|
*/
|
|
class DynamicAttributesProvider {
|
|
public:
|
|
virtual ReadAttributePtr try_get_for_read(const GeometryComponent &component,
|
|
const StringRef attribute_name) const = 0;
|
|
virtual WriteAttributePtr try_get_for_write(GeometryComponent &component,
|
|
const StringRef attribute_name) const = 0;
|
|
virtual bool try_delete(GeometryComponent &component, const StringRef attribute_name) const = 0;
|
|
virtual bool try_create(GeometryComponent &UNUSED(component),
|
|
const StringRef UNUSED(attribute_name),
|
|
const AttributeDomain UNUSED(domain),
|
|
const CustomDataType UNUSED(data_type)) const
|
|
{
|
|
/* Some providers should not create new attributes. */
|
|
return false;
|
|
};
|
|
|
|
virtual bool foreach_attribute(const GeometryComponent &component,
|
|
const AttributeForeachCallback callback) const = 0;
|
|
virtual void supported_domains(Vector<AttributeDomain> &r_domains) const = 0;
|
|
};
|
|
|
|
/**
|
|
* Utility to group together multiple functions that are used to access custom data on geometry
|
|
* components in a generic way.
|
|
*/
|
|
struct CustomDataAccessInfo {
|
|
using CustomDataGetter = CustomData *(*)(GeometryComponent &component);
|
|
using ConstCustomDataGetter = const CustomData *(*)(const GeometryComponent &component);
|
|
using UpdateCustomDataPointers = void (*)(GeometryComponent &component);
|
|
|
|
CustomDataGetter get_custom_data;
|
|
ConstCustomDataGetter get_const_custom_data;
|
|
UpdateCustomDataPointers update_custom_data_pointers;
|
|
};
|
|
|
|
/**
|
|
* This provider is used to provide access to builtin attributes. It supports making internal types
|
|
* available as different types. For example, the vertex position attribute is stored as part of
|
|
* the #MVert struct, but is exposed as float3 attribute.
|
|
*/
|
|
class BuiltinCustomDataLayerProvider final : public BuiltinAttributeProvider {
|
|
using AsReadAttribute = ReadAttributePtr (*)(const void *data, const int domain_size);
|
|
using AsWriteAttribute = WriteAttributePtr (*)(void *data, const int domain_size);
|
|
using UpdateOnWrite = void (*)(GeometryComponent &component);
|
|
const CustomDataType stored_type_;
|
|
const CustomDataAccessInfo custom_data_access_;
|
|
const AsReadAttribute as_read_attribute_;
|
|
const AsWriteAttribute as_write_attribute_;
|
|
const UpdateOnWrite update_on_write_;
|
|
|
|
public:
|
|
BuiltinCustomDataLayerProvider(std::string attribute_name,
|
|
const AttributeDomain domain,
|
|
const CustomDataType attribute_type,
|
|
const CustomDataType stored_type,
|
|
const CreatableEnum creatable,
|
|
const WritableEnum writable,
|
|
const DeletableEnum deletable,
|
|
const CustomDataAccessInfo custom_data_access,
|
|
const AsReadAttribute as_read_attribute,
|
|
const AsWriteAttribute as_write_attribute,
|
|
const UpdateOnWrite update_on_write)
|
|
: BuiltinAttributeProvider(
|
|
std::move(attribute_name), domain, attribute_type, creatable, writable, deletable),
|
|
stored_type_(stored_type),
|
|
custom_data_access_(custom_data_access),
|
|
as_read_attribute_(as_read_attribute),
|
|
as_write_attribute_(as_write_attribute),
|
|
update_on_write_(update_on_write)
|
|
{
|
|
}
|
|
|
|
ReadAttributePtr try_get_for_read(const GeometryComponent &component) const final
|
|
{
|
|
const CustomData *custom_data = custom_data_access_.get_const_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return {};
|
|
}
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
const void *data = CustomData_get_layer(custom_data, stored_type_);
|
|
if (data == nullptr) {
|
|
return {};
|
|
}
|
|
return as_read_attribute_(data, domain_size);
|
|
}
|
|
|
|
WriteAttributePtr try_get_for_write(GeometryComponent &component) const final
|
|
{
|
|
if (writable_ != Writable) {
|
|
return {};
|
|
}
|
|
CustomData *custom_data = custom_data_access_.get_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return {};
|
|
}
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
void *data = CustomData_get_layer(custom_data, stored_type_);
|
|
if (data == nullptr) {
|
|
return {};
|
|
}
|
|
void *new_data = CustomData_duplicate_referenced_layer(custom_data, stored_type_, domain_size);
|
|
if (data != new_data) {
|
|
custom_data_access_.update_custom_data_pointers(component);
|
|
data = new_data;
|
|
}
|
|
if (update_on_write_ != nullptr) {
|
|
update_on_write_(component);
|
|
}
|
|
return as_write_attribute_(data, domain_size);
|
|
}
|
|
|
|
bool try_delete(GeometryComponent &component) const final
|
|
{
|
|
if (deletable_ != Deletable) {
|
|
return false;
|
|
}
|
|
CustomData *custom_data = custom_data_access_.get_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return {};
|
|
}
|
|
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
const int layer_index = CustomData_get_layer_index(custom_data, stored_type_);
|
|
const bool delete_success = CustomData_free_layer(
|
|
custom_data, stored_type_, domain_size, layer_index);
|
|
if (delete_success) {
|
|
custom_data_access_.update_custom_data_pointers(component);
|
|
}
|
|
return delete_success;
|
|
}
|
|
|
|
bool try_create(GeometryComponent &component) const final
|
|
{
|
|
if (createable_ != Creatable) {
|
|
return false;
|
|
}
|
|
CustomData *custom_data = custom_data_access_.get_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return false;
|
|
}
|
|
if (CustomData_get_layer(custom_data, stored_type_) != nullptr) {
|
|
/* Exists already. */
|
|
return false;
|
|
}
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
const void *data = CustomData_add_layer(
|
|
custom_data, stored_type_, CD_DEFAULT, nullptr, domain_size);
|
|
const bool success = data != nullptr;
|
|
if (success) {
|
|
custom_data_access_.update_custom_data_pointers(component);
|
|
}
|
|
return success;
|
|
}
|
|
|
|
bool exists(const GeometryComponent &component) const final
|
|
{
|
|
const CustomData *custom_data = custom_data_access_.get_const_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return false;
|
|
}
|
|
const void *data = CustomData_get_layer(custom_data, stored_type_);
|
|
return data != nullptr;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* This is the attribute provider for most user generated attributes.
|
|
*/
|
|
class CustomDataAttributeProvider final : public DynamicAttributesProvider {
|
|
private:
|
|
static constexpr uint64_t supported_types_mask = CD_MASK_PROP_FLOAT | CD_MASK_PROP_FLOAT2 |
|
|
CD_MASK_PROP_FLOAT3 | CD_MASK_PROP_INT32 |
|
|
CD_MASK_PROP_COLOR | CD_MASK_PROP_BOOL;
|
|
const AttributeDomain domain_;
|
|
const CustomDataAccessInfo custom_data_access_;
|
|
|
|
public:
|
|
CustomDataAttributeProvider(const AttributeDomain domain,
|
|
const CustomDataAccessInfo custom_data_access)
|
|
: domain_(domain), custom_data_access_(custom_data_access)
|
|
{
|
|
}
|
|
|
|
ReadAttributePtr try_get_for_read(const GeometryComponent &component,
|
|
const StringRef attribute_name) const final
|
|
{
|
|
const CustomData *custom_data = custom_data_access_.get_const_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return {};
|
|
}
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
|
|
if (layer.name != attribute_name) {
|
|
continue;
|
|
}
|
|
const CustomDataType data_type = (CustomDataType)layer.type;
|
|
switch (data_type) {
|
|
case CD_PROP_FLOAT:
|
|
return this->layer_to_read_attribute<float>(layer, domain_size);
|
|
case CD_PROP_FLOAT2:
|
|
return this->layer_to_read_attribute<float2>(layer, domain_size);
|
|
case CD_PROP_FLOAT3:
|
|
return this->layer_to_read_attribute<float3>(layer, domain_size);
|
|
case CD_PROP_INT32:
|
|
return this->layer_to_read_attribute<int>(layer, domain_size);
|
|
case CD_PROP_COLOR:
|
|
return this->layer_to_read_attribute<Color4f>(layer, domain_size);
|
|
case CD_PROP_BOOL:
|
|
return this->layer_to_read_attribute<bool>(layer, domain_size);
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return {};
|
|
}
|
|
|
|
WriteAttributePtr try_get_for_write(GeometryComponent &component,
|
|
const StringRef attribute_name) const final
|
|
{
|
|
CustomData *custom_data = custom_data_access_.get_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return {};
|
|
}
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
for (CustomDataLayer &layer : MutableSpan(custom_data->layers, custom_data->totlayer)) {
|
|
if (layer.name != attribute_name) {
|
|
continue;
|
|
}
|
|
CustomData_duplicate_referenced_layer_named(
|
|
custom_data, layer.type, layer.name, domain_size);
|
|
const CustomDataType data_type = (CustomDataType)layer.type;
|
|
switch (data_type) {
|
|
case CD_PROP_FLOAT:
|
|
return this->layer_to_write_attribute<float>(layer, domain_size);
|
|
case CD_PROP_FLOAT2:
|
|
return this->layer_to_write_attribute<float2>(layer, domain_size);
|
|
case CD_PROP_FLOAT3:
|
|
return this->layer_to_write_attribute<float3>(layer, domain_size);
|
|
case CD_PROP_INT32:
|
|
return this->layer_to_write_attribute<int>(layer, domain_size);
|
|
case CD_PROP_COLOR:
|
|
return this->layer_to_write_attribute<Color4f>(layer, domain_size);
|
|
case CD_PROP_BOOL:
|
|
return this->layer_to_write_attribute<bool>(layer, domain_size);
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
return {};
|
|
}
|
|
|
|
bool try_delete(GeometryComponent &component, const StringRef attribute_name) const final
|
|
{
|
|
CustomData *custom_data = custom_data_access_.get_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return false;
|
|
}
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
for (const int i : IndexRange(custom_data->totlayer)) {
|
|
const CustomDataLayer &layer = custom_data->layers[i];
|
|
if (this->type_is_supported((CustomDataType)layer.type) && layer.name == attribute_name) {
|
|
CustomData_free_layer(custom_data, layer.type, domain_size, i);
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool try_create(GeometryComponent &component,
|
|
const StringRef attribute_name,
|
|
const AttributeDomain domain,
|
|
const CustomDataType data_type) const final
|
|
{
|
|
if (domain_ != domain) {
|
|
return false;
|
|
}
|
|
if (!this->type_is_supported(data_type)) {
|
|
return false;
|
|
}
|
|
CustomData *custom_data = custom_data_access_.get_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return false;
|
|
}
|
|
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
|
|
if (layer.name == attribute_name) {
|
|
return false;
|
|
}
|
|
}
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
char attribute_name_c[MAX_NAME];
|
|
attribute_name.copy(attribute_name_c);
|
|
CustomData_add_layer_named(
|
|
custom_data, data_type, CD_DEFAULT, nullptr, domain_size, attribute_name_c);
|
|
return true;
|
|
}
|
|
|
|
bool foreach_attribute(const GeometryComponent &component,
|
|
const AttributeForeachCallback callback) const final
|
|
{
|
|
const CustomData *custom_data = custom_data_access_.get_const_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return true;
|
|
}
|
|
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
|
|
const CustomDataType data_type = (CustomDataType)layer.type;
|
|
if (this->type_is_supported(data_type)) {
|
|
AttributeMetaData meta_data{domain_, data_type};
|
|
if (!callback(layer.name, meta_data)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void supported_domains(Vector<AttributeDomain> &r_domains) const final
|
|
{
|
|
r_domains.append_non_duplicates(domain_);
|
|
}
|
|
|
|
private:
|
|
template<typename T>
|
|
ReadAttributePtr layer_to_read_attribute(const CustomDataLayer &layer,
|
|
const int domain_size) const
|
|
{
|
|
return std::make_unique<ArrayReadAttribute<T>>(
|
|
domain_, Span(static_cast<const T *>(layer.data), domain_size));
|
|
}
|
|
|
|
template<typename T>
|
|
WriteAttributePtr layer_to_write_attribute(CustomDataLayer &layer, const int domain_size) const
|
|
{
|
|
return std::make_unique<ArrayWriteAttribute<T>>(
|
|
domain_, MutableSpan(static_cast<T *>(layer.data), domain_size));
|
|
}
|
|
|
|
bool type_is_supported(CustomDataType data_type) const
|
|
{
|
|
return ((1ULL << data_type) & supported_types_mask) != 0;
|
|
}
|
|
};
|
|
|
|
static Mesh *get_mesh_from_component_for_write(GeometryComponent &component)
|
|
{
|
|
BLI_assert(component.type() == GeometryComponentType::Mesh);
|
|
MeshComponent &mesh_component = static_cast<MeshComponent &>(component);
|
|
return mesh_component.get_for_write();
|
|
}
|
|
|
|
static const Mesh *get_mesh_from_component_for_read(const GeometryComponent &component)
|
|
{
|
|
BLI_assert(component.type() == GeometryComponentType::Mesh);
|
|
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
|
|
return mesh_component.get_for_read();
|
|
}
|
|
|
|
/**
|
|
* This attribute provider is used for uv maps and vertex colors.
|
|
*/
|
|
class NamedLegacyCustomDataProvider final : public DynamicAttributesProvider {
|
|
private:
|
|
using AsReadAttribute = ReadAttributePtr (*)(const void *data, const int domain_size);
|
|
using AsWriteAttribute = WriteAttributePtr (*)(void *data, const int domain_size);
|
|
const AttributeDomain domain_;
|
|
const CustomDataType attribute_type_;
|
|
const CustomDataType stored_type_;
|
|
const CustomDataAccessInfo custom_data_access_;
|
|
const AsReadAttribute as_read_attribute_;
|
|
const AsWriteAttribute as_write_attribute_;
|
|
|
|
public:
|
|
NamedLegacyCustomDataProvider(const AttributeDomain domain,
|
|
const CustomDataType attribute_type,
|
|
const CustomDataType stored_type,
|
|
const CustomDataAccessInfo custom_data_access,
|
|
const AsReadAttribute as_read_attribute,
|
|
const AsWriteAttribute as_write_attribute)
|
|
: domain_(domain),
|
|
attribute_type_(attribute_type),
|
|
stored_type_(stored_type),
|
|
custom_data_access_(custom_data_access),
|
|
as_read_attribute_(as_read_attribute),
|
|
as_write_attribute_(as_write_attribute)
|
|
{
|
|
}
|
|
|
|
ReadAttributePtr try_get_for_read(const GeometryComponent &component,
|
|
const StringRef attribute_name) const final
|
|
{
|
|
const CustomData *custom_data = custom_data_access_.get_const_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return {};
|
|
}
|
|
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
|
|
if (layer.type == stored_type_) {
|
|
if (layer.name == attribute_name) {
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
return as_read_attribute_(layer.data, domain_size);
|
|
}
|
|
}
|
|
}
|
|
return {};
|
|
}
|
|
|
|
WriteAttributePtr try_get_for_write(GeometryComponent &component,
|
|
const StringRef attribute_name) const final
|
|
{
|
|
CustomData *custom_data = custom_data_access_.get_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return {};
|
|
}
|
|
for (CustomDataLayer &layer : MutableSpan(custom_data->layers, custom_data->totlayer)) {
|
|
if (layer.type == stored_type_) {
|
|
if (layer.name == attribute_name) {
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
void *data_old = layer.data;
|
|
void *data_new = CustomData_duplicate_referenced_layer_named(
|
|
custom_data, stored_type_, layer.name, domain_size);
|
|
if (data_old != data_new) {
|
|
custom_data_access_.update_custom_data_pointers(component);
|
|
}
|
|
return as_write_attribute_(layer.data, domain_size);
|
|
}
|
|
}
|
|
}
|
|
return {};
|
|
}
|
|
|
|
bool try_delete(GeometryComponent &component, const StringRef attribute_name) const final
|
|
{
|
|
CustomData *custom_data = custom_data_access_.get_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return false;
|
|
}
|
|
for (const int i : IndexRange(custom_data->totlayer)) {
|
|
const CustomDataLayer &layer = custom_data->layers[i];
|
|
if (layer.type == stored_type_) {
|
|
if (layer.name == attribute_name) {
|
|
const int domain_size = component.attribute_domain_size(domain_);
|
|
CustomData_free_layer(custom_data, stored_type_, domain_size, i);
|
|
custom_data_access_.update_custom_data_pointers(component);
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
bool foreach_attribute(const GeometryComponent &component,
|
|
const AttributeForeachCallback callback) const final
|
|
{
|
|
const CustomData *custom_data = custom_data_access_.get_const_custom_data(component);
|
|
if (custom_data == nullptr) {
|
|
return true;
|
|
}
|
|
for (const CustomDataLayer &layer : Span(custom_data->layers, custom_data->totlayer)) {
|
|
if (layer.type == stored_type_) {
|
|
AttributeMetaData meta_data{domain_, attribute_type_};
|
|
if (!callback(layer.name, meta_data)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void supported_domains(Vector<AttributeDomain> &r_domains) const final
|
|
{
|
|
r_domains.append_non_duplicates(domain_);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* This provider makes vertex groups available as float attributes.
|
|
*/
|
|
class VertexGroupsAttributeProvider final : public DynamicAttributesProvider {
|
|
public:
|
|
ReadAttributePtr try_get_for_read(const GeometryComponent &component,
|
|
const StringRef attribute_name) const final
|
|
{
|
|
BLI_assert(component.type() == GeometryComponentType::Mesh);
|
|
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
|
|
const Mesh *mesh = mesh_component.get_for_read();
|
|
const int vertex_group_index = mesh_component.vertex_group_names().lookup_default_as(
|
|
attribute_name, -1);
|
|
if (vertex_group_index < 0) {
|
|
return {};
|
|
}
|
|
if (mesh == nullptr || mesh->dvert == nullptr) {
|
|
static const float default_value = 0.0f;
|
|
return std::make_unique<ConstantReadAttribute>(
|
|
ATTR_DOMAIN_POINT, mesh->totvert, CPPType::get<float>(), &default_value);
|
|
}
|
|
return std::make_unique<VertexWeightReadAttribute>(
|
|
mesh->dvert, mesh->totvert, vertex_group_index);
|
|
}
|
|
|
|
WriteAttributePtr try_get_for_write(GeometryComponent &component,
|
|
const StringRef attribute_name) const final
|
|
{
|
|
BLI_assert(component.type() == GeometryComponentType::Mesh);
|
|
MeshComponent &mesh_component = static_cast<MeshComponent &>(component);
|
|
Mesh *mesh = mesh_component.get_for_write();
|
|
if (mesh == nullptr) {
|
|
return {};
|
|
}
|
|
const int vertex_group_index = mesh_component.vertex_group_names().lookup_default_as(
|
|
attribute_name, -1);
|
|
if (vertex_group_index < 0) {
|
|
return {};
|
|
}
|
|
if (mesh->dvert == nullptr) {
|
|
BKE_object_defgroup_data_create(&mesh->id);
|
|
}
|
|
else {
|
|
/* Copy the data layer if it is shared with some other mesh. */
|
|
mesh->dvert = (MDeformVert *)CustomData_duplicate_referenced_layer(
|
|
&mesh->vdata, CD_MDEFORMVERT, mesh->totvert);
|
|
}
|
|
return std::make_unique<blender::bke::VertexWeightWriteAttribute>(
|
|
mesh->dvert, mesh->totvert, vertex_group_index);
|
|
}
|
|
|
|
bool try_delete(GeometryComponent &component, const StringRef attribute_name) const final
|
|
{
|
|
BLI_assert(component.type() == GeometryComponentType::Mesh);
|
|
MeshComponent &mesh_component = static_cast<MeshComponent &>(component);
|
|
|
|
const int vertex_group_index = mesh_component.vertex_group_names().pop_default_as(
|
|
attribute_name, -1);
|
|
if (vertex_group_index < 0) {
|
|
return false;
|
|
}
|
|
Mesh *mesh = mesh_component.get_for_write();
|
|
if (mesh == nullptr) {
|
|
return true;
|
|
}
|
|
if (mesh->dvert == nullptr) {
|
|
return true;
|
|
}
|
|
for (MDeformVert &dvert : MutableSpan(mesh->dvert, mesh->totvert)) {
|
|
MDeformWeight *weight = BKE_defvert_find_index(&dvert, vertex_group_index);
|
|
BKE_defvert_remove_group(&dvert, weight);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
bool foreach_attribute(const GeometryComponent &component,
|
|
const AttributeForeachCallback callback) const final
|
|
{
|
|
BLI_assert(component.type() == GeometryComponentType::Mesh);
|
|
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
|
|
for (const auto item : mesh_component.vertex_group_names().items()) {
|
|
const StringRefNull name = item.key;
|
|
const int vertex_group_index = item.value;
|
|
if (vertex_group_index >= 0) {
|
|
AttributeMetaData meta_data{ATTR_DOMAIN_POINT, CD_PROP_FLOAT};
|
|
if (!callback(name, meta_data)) {
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void supported_domains(Vector<AttributeDomain> &r_domains) const final
|
|
{
|
|
r_domains.append_non_duplicates(ATTR_DOMAIN_POINT);
|
|
}
|
|
};
|
|
|
|
/**
|
|
* This is a container for multiple attribute providers that are used by one geometry component
|
|
* type (e.g. there is a set of attribute providers for mesh components).
|
|
*/
|
|
class ComponentAttributeProviders {
|
|
private:
|
|
/**
|
|
* Builtin attribute providers are identified by their name. Attribute names that are in this
|
|
* map will only be accessed using builtin attribute providers. Therefore, these providers have
|
|
* higher priority when an attribute name is looked up. Usually, that means that builtin
|
|
* providers are checked before dynamic ones.
|
|
*/
|
|
Map<std::string, const BuiltinAttributeProvider *> builtin_attribute_providers_;
|
|
/**
|
|
* An ordered list of dynamic attribute providers. The order is important because that is order
|
|
* in which they are checked when an attribute is looked up.
|
|
*/
|
|
Vector<const DynamicAttributesProvider *> dynamic_attribute_providers_;
|
|
/**
|
|
* All the domains that are supported by at least one of the providers above.
|
|
*/
|
|
Vector<AttributeDomain> supported_domains_;
|
|
|
|
public:
|
|
ComponentAttributeProviders(Span<const BuiltinAttributeProvider *> builtin_attribute_providers,
|
|
Span<const DynamicAttributesProvider *> dynamic_attribute_providers)
|
|
: dynamic_attribute_providers_(dynamic_attribute_providers)
|
|
{
|
|
Set<AttributeDomain> domains;
|
|
for (const BuiltinAttributeProvider *provider : builtin_attribute_providers) {
|
|
/* Use #add_new to make sure that no two builtin attributes have the same name. */
|
|
builtin_attribute_providers_.add_new(provider->name(), provider);
|
|
supported_domains_.append_non_duplicates(provider->domain());
|
|
}
|
|
for (const DynamicAttributesProvider *provider : dynamic_attribute_providers) {
|
|
provider->supported_domains(supported_domains_);
|
|
}
|
|
}
|
|
|
|
const Map<std::string, const BuiltinAttributeProvider *> &builtin_attribute_providers() const
|
|
{
|
|
return builtin_attribute_providers_;
|
|
}
|
|
|
|
Span<const DynamicAttributesProvider *> dynamic_attribute_providers() const
|
|
{
|
|
return dynamic_attribute_providers_;
|
|
}
|
|
|
|
Span<AttributeDomain> supported_domains() const
|
|
{
|
|
return supported_domains_;
|
|
}
|
|
};
|
|
|
|
static float3 get_vertex_position(const MVert &vert)
|
|
{
|
|
return float3(vert.co);
|
|
}
|
|
|
|
static void set_vertex_position(MVert &vert, const float3 &position)
|
|
{
|
|
copy_v3_v3(vert.co, position);
|
|
}
|
|
|
|
static ReadAttributePtr make_vertex_position_read_attribute(const void *data,
|
|
const int domain_size)
|
|
{
|
|
return std::make_unique<DerivedArrayReadAttribute<MVert, float3, get_vertex_position>>(
|
|
ATTR_DOMAIN_POINT, Span<MVert>((const MVert *)data, domain_size));
|
|
}
|
|
|
|
static WriteAttributePtr make_vertex_position_write_attribute(void *data, const int domain_size)
|
|
{
|
|
return std::make_unique<
|
|
DerivedArrayWriteAttribute<MVert, float3, get_vertex_position, set_vertex_position>>(
|
|
ATTR_DOMAIN_POINT, MutableSpan<MVert>((MVert *)data, domain_size));
|
|
}
|
|
|
|
static void tag_normals_dirty_when_writing_position(GeometryComponent &component)
|
|
{
|
|
Mesh *mesh = get_mesh_from_component_for_write(component);
|
|
if (mesh != nullptr) {
|
|
mesh->runtime.cd_dirty_vert |= CD_MASK_NORMAL;
|
|
}
|
|
}
|
|
|
|
static int get_material_index(const MPoly &mpoly)
|
|
{
|
|
return static_cast<int>(mpoly.mat_nr);
|
|
}
|
|
|
|
static void set_material_index(MPoly &mpoly, const int &index)
|
|
{
|
|
mpoly.mat_nr = static_cast<short>(std::clamp(index, 0, SHRT_MAX));
|
|
}
|
|
|
|
static ReadAttributePtr make_material_index_read_attribute(const void *data, const int domain_size)
|
|
{
|
|
return std::make_unique<DerivedArrayReadAttribute<MPoly, int, get_material_index>>(
|
|
ATTR_DOMAIN_POLYGON, Span<MPoly>((const MPoly *)data, domain_size));
|
|
}
|
|
|
|
static WriteAttributePtr make_material_index_write_attribute(void *data, const int domain_size)
|
|
{
|
|
return std::make_unique<
|
|
DerivedArrayWriteAttribute<MPoly, int, get_material_index, set_material_index>>(
|
|
ATTR_DOMAIN_POLYGON, MutableSpan<MPoly>((MPoly *)data, domain_size));
|
|
}
|
|
|
|
static float2 get_loop_uv(const MLoopUV &uv)
|
|
{
|
|
return float2(uv.uv);
|
|
}
|
|
|
|
static void set_loop_uv(MLoopUV &uv, const float2 &co)
|
|
{
|
|
copy_v2_v2(uv.uv, co);
|
|
}
|
|
|
|
static ReadAttributePtr make_uvs_read_attribute(const void *data, const int domain_size)
|
|
{
|
|
return std::make_unique<DerivedArrayReadAttribute<MLoopUV, float2, get_loop_uv>>(
|
|
ATTR_DOMAIN_CORNER, Span((const MLoopUV *)data, domain_size));
|
|
}
|
|
|
|
static WriteAttributePtr make_uvs_write_attribute(void *data, const int domain_size)
|
|
{
|
|
return std::make_unique<DerivedArrayWriteAttribute<MLoopUV, float2, get_loop_uv, set_loop_uv>>(
|
|
ATTR_DOMAIN_CORNER, MutableSpan((MLoopUV *)data, domain_size));
|
|
}
|
|
|
|
static Color4f get_loop_color(const MLoopCol &col)
|
|
{
|
|
Color4f value;
|
|
rgba_uchar_to_float(value, &col.r);
|
|
return value;
|
|
}
|
|
|
|
static void set_loop_color(MLoopCol &col, const Color4f &value)
|
|
{
|
|
rgba_float_to_uchar(&col.r, value);
|
|
}
|
|
|
|
static ReadAttributePtr make_vertex_color_read_attribute(const void *data, const int domain_size)
|
|
{
|
|
return std::make_unique<DerivedArrayReadAttribute<MLoopCol, Color4f, get_loop_color>>(
|
|
ATTR_DOMAIN_CORNER, Span((const MLoopCol *)data, domain_size));
|
|
}
|
|
|
|
static WriteAttributePtr make_vertex_color_write_attribute(void *data, const int domain_size)
|
|
{
|
|
return std::make_unique<
|
|
DerivedArrayWriteAttribute<MLoopCol, Color4f, get_loop_color, set_loop_color>>(
|
|
ATTR_DOMAIN_CORNER, MutableSpan((MLoopCol *)data, domain_size));
|
|
}
|
|
|
|
template<typename T, AttributeDomain Domain>
|
|
static ReadAttributePtr make_array_read_attribute(const void *data, const int domain_size)
|
|
{
|
|
return std::make_unique<ArrayReadAttribute<T>>(Domain, Span<T>((const T *)data, domain_size));
|
|
}
|
|
|
|
template<typename T, AttributeDomain Domain>
|
|
static WriteAttributePtr make_array_write_attribute(void *data, const int domain_size)
|
|
{
|
|
return std::make_unique<ArrayWriteAttribute<T>>(Domain, MutableSpan<T>((T *)data, domain_size));
|
|
}
|
|
|
|
/**
|
|
* In this function all the attribute providers for a mesh component are created. Most data in this
|
|
* function is statically allocated, because it does not change over time.
|
|
*/
|
|
static ComponentAttributeProviders create_attribute_providers_for_mesh()
|
|
{
|
|
static auto update_custom_data_pointers = [](GeometryComponent &component) {
|
|
Mesh *mesh = get_mesh_from_component_for_write(component);
|
|
if (mesh != nullptr) {
|
|
BKE_mesh_update_customdata_pointers(mesh, false);
|
|
}
|
|
};
|
|
|
|
#define MAKE_MUTABLE_CUSTOM_DATA_GETTER(NAME) \
|
|
[](GeometryComponent &component) -> CustomData * { \
|
|
Mesh *mesh = get_mesh_from_component_for_write(component); \
|
|
return mesh ? &mesh->NAME : nullptr; \
|
|
}
|
|
#define MAKE_CONST_CUSTOM_DATA_GETTER(NAME) \
|
|
[](const GeometryComponent &component) -> const CustomData * { \
|
|
const Mesh *mesh = get_mesh_from_component_for_read(component); \
|
|
return mesh ? &mesh->NAME : nullptr; \
|
|
}
|
|
|
|
static CustomDataAccessInfo corner_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(ldata),
|
|
MAKE_CONST_CUSTOM_DATA_GETTER(ldata),
|
|
update_custom_data_pointers};
|
|
static CustomDataAccessInfo point_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(vdata),
|
|
MAKE_CONST_CUSTOM_DATA_GETTER(vdata),
|
|
update_custom_data_pointers};
|
|
static CustomDataAccessInfo edge_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(edata),
|
|
MAKE_CONST_CUSTOM_DATA_GETTER(edata),
|
|
update_custom_data_pointers};
|
|
static CustomDataAccessInfo polygon_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(pdata),
|
|
MAKE_CONST_CUSTOM_DATA_GETTER(pdata),
|
|
update_custom_data_pointers};
|
|
|
|
#undef MAKE_CONST_CUSTOM_DATA_GETTER
|
|
#undef MAKE_MUTABLE_CUSTOM_DATA_GETTER
|
|
|
|
static BuiltinCustomDataLayerProvider position("position",
|
|
ATTR_DOMAIN_POINT,
|
|
CD_PROP_FLOAT3,
|
|
CD_MVERT,
|
|
BuiltinAttributeProvider::NonCreatable,
|
|
BuiltinAttributeProvider::Writable,
|
|
BuiltinAttributeProvider::NonDeletable,
|
|
point_access,
|
|
make_vertex_position_read_attribute,
|
|
make_vertex_position_write_attribute,
|
|
tag_normals_dirty_when_writing_position);
|
|
|
|
static BuiltinCustomDataLayerProvider material_index("material_index",
|
|
ATTR_DOMAIN_POLYGON,
|
|
CD_PROP_INT32,
|
|
CD_MPOLY,
|
|
BuiltinAttributeProvider::NonCreatable,
|
|
BuiltinAttributeProvider::Writable,
|
|
BuiltinAttributeProvider::NonDeletable,
|
|
polygon_access,
|
|
make_material_index_read_attribute,
|
|
make_material_index_write_attribute,
|
|
nullptr);
|
|
|
|
static NamedLegacyCustomDataProvider uvs(ATTR_DOMAIN_CORNER,
|
|
CD_PROP_FLOAT2,
|
|
CD_MLOOPUV,
|
|
corner_access,
|
|
make_uvs_read_attribute,
|
|
make_uvs_write_attribute);
|
|
|
|
static NamedLegacyCustomDataProvider vertex_colors(ATTR_DOMAIN_CORNER,
|
|
CD_PROP_COLOR,
|
|
CD_MLOOPCOL,
|
|
corner_access,
|
|
make_vertex_color_read_attribute,
|
|
make_vertex_color_write_attribute);
|
|
|
|
static VertexGroupsAttributeProvider vertex_groups;
|
|
static CustomDataAttributeProvider corner_custom_data(ATTR_DOMAIN_CORNER, corner_access);
|
|
static CustomDataAttributeProvider point_custom_data(ATTR_DOMAIN_POINT, point_access);
|
|
static CustomDataAttributeProvider edge_custom_data(ATTR_DOMAIN_EDGE, edge_access);
|
|
static CustomDataAttributeProvider polygon_custom_data(ATTR_DOMAIN_POLYGON, polygon_access);
|
|
|
|
return ComponentAttributeProviders({&position, &material_index},
|
|
{&uvs,
|
|
&vertex_colors,
|
|
&corner_custom_data,
|
|
&vertex_groups,
|
|
&point_custom_data,
|
|
&edge_custom_data,
|
|
&polygon_custom_data});
|
|
}
|
|
|
|
/**
|
|
* In this function all the attribute providers for a point cloud component are created. Most data
|
|
* in this function is statically allocated, because it does not change over time.
|
|
*/
|
|
static ComponentAttributeProviders create_attribute_providers_for_point_cloud()
|
|
{
|
|
static auto update_custom_data_pointers = [](GeometryComponent &component) {
|
|
PointCloudComponent &pointcloud_component = static_cast<PointCloudComponent &>(component);
|
|
PointCloud *pointcloud = pointcloud_component.get_for_write();
|
|
if (pointcloud != nullptr) {
|
|
BKE_pointcloud_update_customdata_pointers(pointcloud);
|
|
}
|
|
};
|
|
static CustomDataAccessInfo point_access = {
|
|
[](GeometryComponent &component) -> CustomData * {
|
|
PointCloudComponent &pointcloud_component = static_cast<PointCloudComponent &>(component);
|
|
PointCloud *pointcloud = pointcloud_component.get_for_write();
|
|
return pointcloud ? &pointcloud->pdata : nullptr;
|
|
},
|
|
[](const GeometryComponent &component) -> const CustomData * {
|
|
const PointCloudComponent &pointcloud_component = static_cast<const PointCloudComponent &>(
|
|
component);
|
|
const PointCloud *pointcloud = pointcloud_component.get_for_read();
|
|
return pointcloud ? &pointcloud->pdata : nullptr;
|
|
},
|
|
update_custom_data_pointers};
|
|
|
|
static BuiltinCustomDataLayerProvider position(
|
|
"position",
|
|
ATTR_DOMAIN_POINT,
|
|
CD_PROP_FLOAT3,
|
|
CD_PROP_FLOAT3,
|
|
BuiltinAttributeProvider::NonCreatable,
|
|
BuiltinAttributeProvider::Writable,
|
|
BuiltinAttributeProvider::NonDeletable,
|
|
point_access,
|
|
make_array_read_attribute<float3, ATTR_DOMAIN_POINT>,
|
|
make_array_write_attribute<float3, ATTR_DOMAIN_POINT>,
|
|
nullptr);
|
|
static BuiltinCustomDataLayerProvider radius(
|
|
"radius",
|
|
ATTR_DOMAIN_POINT,
|
|
CD_PROP_FLOAT,
|
|
CD_PROP_FLOAT,
|
|
BuiltinAttributeProvider::Creatable,
|
|
BuiltinAttributeProvider::Writable,
|
|
BuiltinAttributeProvider::Deletable,
|
|
point_access,
|
|
make_array_read_attribute<float, ATTR_DOMAIN_POINT>,
|
|
make_array_write_attribute<float, ATTR_DOMAIN_POINT>,
|
|
nullptr);
|
|
static CustomDataAttributeProvider point_custom_data(ATTR_DOMAIN_POINT, point_access);
|
|
return ComponentAttributeProviders({&position, &radius}, {&point_custom_data});
|
|
}
|
|
|
|
} // namespace blender::bke
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Geometry Component
|
|
* \{ */
|
|
|
|
const blender::bke::ComponentAttributeProviders *GeometryComponent::get_attribute_providers() const
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
bool GeometryComponent::attribute_domain_supported(const AttributeDomain domain) const
|
|
{
|
|
using namespace blender::bke;
|
|
const ComponentAttributeProviders *providers = this->get_attribute_providers();
|
|
if (providers == nullptr) {
|
|
return false;
|
|
}
|
|
return providers->supported_domains().contains(domain);
|
|
}
|
|
|
|
int GeometryComponent::attribute_domain_size(const AttributeDomain UNUSED(domain)) const
|
|
{
|
|
BLI_assert(false);
|
|
return 0;
|
|
}
|
|
|
|
ReadAttributePtr GeometryComponent::attribute_try_get_for_read(
|
|
const StringRef attribute_name) const
|
|
{
|
|
using namespace blender::bke;
|
|
const ComponentAttributeProviders *providers = this->get_attribute_providers();
|
|
if (providers == nullptr) {
|
|
return {};
|
|
}
|
|
const BuiltinAttributeProvider *builtin_provider =
|
|
providers->builtin_attribute_providers().lookup_default_as(attribute_name, nullptr);
|
|
if (builtin_provider != nullptr) {
|
|
return builtin_provider->try_get_for_read(*this);
|
|
}
|
|
for (const DynamicAttributesProvider *dynamic_provider :
|
|
providers->dynamic_attribute_providers()) {
|
|
ReadAttributePtr attribute = dynamic_provider->try_get_for_read(*this, attribute_name);
|
|
if (attribute) {
|
|
return attribute;
|
|
}
|
|
}
|
|
return {};
|
|
}
|
|
|
|
ReadAttributePtr GeometryComponent::attribute_try_adapt_domain(
|
|
ReadAttributePtr attribute, const AttributeDomain new_domain) const
|
|
{
|
|
if (attribute && attribute->domain() == new_domain) {
|
|
return attribute;
|
|
}
|
|
return {};
|
|
}
|
|
|
|
WriteAttributePtr GeometryComponent::attribute_try_get_for_write(const StringRef attribute_name)
|
|
{
|
|
using namespace blender::bke;
|
|
const ComponentAttributeProviders *providers = this->get_attribute_providers();
|
|
if (providers == nullptr) {
|
|
return {};
|
|
}
|
|
const BuiltinAttributeProvider *builtin_provider =
|
|
providers->builtin_attribute_providers().lookup_default_as(attribute_name, nullptr);
|
|
if (builtin_provider != nullptr) {
|
|
return builtin_provider->try_get_for_write(*this);
|
|
}
|
|
for (const DynamicAttributesProvider *dynamic_provider :
|
|
providers->dynamic_attribute_providers()) {
|
|
WriteAttributePtr attribute = dynamic_provider->try_get_for_write(*this, attribute_name);
|
|
if (attribute) {
|
|
return attribute;
|
|
}
|
|
}
|
|
return {};
|
|
}
|
|
|
|
bool GeometryComponent::attribute_try_delete(const StringRef attribute_name)
|
|
{
|
|
using namespace blender::bke;
|
|
const ComponentAttributeProviders *providers = this->get_attribute_providers();
|
|
if (providers == nullptr) {
|
|
return {};
|
|
}
|
|
const BuiltinAttributeProvider *builtin_provider =
|
|
providers->builtin_attribute_providers().lookup_default_as(attribute_name, nullptr);
|
|
if (builtin_provider != nullptr) {
|
|
return builtin_provider->try_delete(*this);
|
|
}
|
|
bool success = false;
|
|
for (const DynamicAttributesProvider *dynamic_provider :
|
|
providers->dynamic_attribute_providers()) {
|
|
success = dynamic_provider->try_delete(*this, attribute_name) || success;
|
|
}
|
|
return success;
|
|
}
|
|
|
|
bool GeometryComponent::attribute_try_create(const StringRef attribute_name,
|
|
const AttributeDomain domain,
|
|
const CustomDataType data_type)
|
|
{
|
|
using namespace blender::bke;
|
|
if (attribute_name.is_empty()) {
|
|
return false;
|
|
}
|
|
const ComponentAttributeProviders *providers = this->get_attribute_providers();
|
|
if (providers == nullptr) {
|
|
return false;
|
|
}
|
|
const BuiltinAttributeProvider *builtin_provider =
|
|
providers->builtin_attribute_providers().lookup_default_as(attribute_name, nullptr);
|
|
if (builtin_provider != nullptr) {
|
|
if (builtin_provider->domain() != domain) {
|
|
return false;
|
|
}
|
|
if (builtin_provider->data_type() != data_type) {
|
|
return false;
|
|
}
|
|
return builtin_provider->try_create(*this);
|
|
}
|
|
for (const DynamicAttributesProvider *dynamic_provider :
|
|
providers->dynamic_attribute_providers()) {
|
|
if (dynamic_provider->try_create(*this, attribute_name, domain, data_type)) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
Set<std::string> GeometryComponent::attribute_names() const
|
|
{
|
|
Set<std::string> attributes;
|
|
this->attribute_foreach([&](StringRefNull name, const AttributeMetaData &UNUSED(meta_data)) {
|
|
attributes.add(name);
|
|
return true;
|
|
});
|
|
return attributes;
|
|
}
|
|
|
|
void GeometryComponent::attribute_foreach(const AttributeForeachCallback callback) const
|
|
{
|
|
using namespace blender::bke;
|
|
const ComponentAttributeProviders *providers = this->get_attribute_providers();
|
|
if (providers == nullptr) {
|
|
return;
|
|
}
|
|
|
|
/* Keep track handled attribute names to make sure that we do not return the same name twice. */
|
|
Set<std::string> handled_attribute_names;
|
|
|
|
for (const BuiltinAttributeProvider *provider :
|
|
providers->builtin_attribute_providers().values()) {
|
|
if (provider->exists(*this)) {
|
|
AttributeMetaData meta_data{provider->domain(), provider->data_type()};
|
|
if (!callback(provider->name(), meta_data)) {
|
|
return;
|
|
}
|
|
handled_attribute_names.add_new(provider->name());
|
|
}
|
|
}
|
|
for (const DynamicAttributesProvider *provider : providers->dynamic_attribute_providers()) {
|
|
const bool continue_loop = provider->foreach_attribute(
|
|
*this, [&](StringRefNull name, const AttributeMetaData &meta_data) {
|
|
if (handled_attribute_names.add(name)) {
|
|
return callback(name, meta_data);
|
|
}
|
|
return true;
|
|
});
|
|
if (!continue_loop) {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
bool GeometryComponent::attribute_exists(const blender::StringRef attribute_name) const
|
|
{
|
|
ReadAttributePtr attribute = this->attribute_try_get_for_read(attribute_name);
|
|
if (attribute) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
static ReadAttributePtr try_adapt_data_type(ReadAttributePtr attribute,
|
|
const blender::fn::CPPType &to_type)
|
|
{
|
|
const blender::fn::CPPType &from_type = attribute->cpp_type();
|
|
if (from_type == to_type) {
|
|
return attribute;
|
|
}
|
|
|
|
const blender::nodes::DataTypeConversions &conversions =
|
|
blender::nodes::get_implicit_type_conversions();
|
|
if (!conversions.is_convertible(from_type, to_type)) {
|
|
return {};
|
|
}
|
|
|
|
return std::make_unique<blender::bke::ConvertedReadAttribute>(std::move(attribute), to_type);
|
|
}
|
|
|
|
ReadAttributePtr GeometryComponent::attribute_try_get_for_read(
|
|
const StringRef attribute_name,
|
|
const AttributeDomain domain,
|
|
const CustomDataType data_type) const
|
|
{
|
|
ReadAttributePtr attribute = this->attribute_try_get_for_read(attribute_name);
|
|
if (!attribute) {
|
|
return {};
|
|
}
|
|
|
|
if (attribute->domain() != domain) {
|
|
attribute = this->attribute_try_adapt_domain(std::move(attribute), domain);
|
|
if (!attribute) {
|
|
return {};
|
|
}
|
|
}
|
|
|
|
const blender::fn::CPPType *cpp_type = blender::bke::custom_data_type_to_cpp_type(data_type);
|
|
BLI_assert(cpp_type != nullptr);
|
|
if (attribute->cpp_type() != *cpp_type) {
|
|
attribute = try_adapt_data_type(std::move(attribute), *cpp_type);
|
|
if (!attribute) {
|
|
return {};
|
|
}
|
|
}
|
|
|
|
return attribute;
|
|
}
|
|
|
|
ReadAttributePtr GeometryComponent::attribute_try_get_for_read(const StringRef attribute_name,
|
|
const AttributeDomain domain) const
|
|
{
|
|
if (!this->attribute_domain_supported(domain)) {
|
|
return {};
|
|
}
|
|
|
|
ReadAttributePtr attribute = this->attribute_try_get_for_read(attribute_name);
|
|
if (!attribute) {
|
|
return {};
|
|
}
|
|
|
|
if (attribute->domain() != domain) {
|
|
attribute = this->attribute_try_adapt_domain(std::move(attribute), domain);
|
|
if (!attribute) {
|
|
return {};
|
|
}
|
|
}
|
|
|
|
return attribute;
|
|
}
|
|
|
|
ReadAttributePtr GeometryComponent::attribute_get_for_read(const StringRef attribute_name,
|
|
const AttributeDomain domain,
|
|
const CustomDataType data_type,
|
|
const void *default_value) const
|
|
{
|
|
ReadAttributePtr attribute = this->attribute_try_get_for_read(attribute_name, domain, data_type);
|
|
if (attribute) {
|
|
return attribute;
|
|
}
|
|
return this->attribute_get_constant_for_read(domain, data_type, default_value);
|
|
}
|
|
|
|
blender::bke::ReadAttributePtr GeometryComponent::attribute_get_constant_for_read(
|
|
const AttributeDomain domain, const CustomDataType data_type, const void *value) const
|
|
{
|
|
BLI_assert(this->attribute_domain_supported(domain));
|
|
const blender::fn::CPPType *cpp_type = blender::bke::custom_data_type_to_cpp_type(data_type);
|
|
BLI_assert(cpp_type != nullptr);
|
|
if (value == nullptr) {
|
|
value = cpp_type->default_value();
|
|
}
|
|
const int domain_size = this->attribute_domain_size(domain);
|
|
return std::make_unique<blender::bke::ConstantReadAttribute>(
|
|
domain, domain_size, *cpp_type, value);
|
|
}
|
|
|
|
blender::bke::ReadAttributePtr GeometryComponent::attribute_get_constant_for_read_converted(
|
|
const AttributeDomain domain,
|
|
const CustomDataType in_data_type,
|
|
const CustomDataType out_data_type,
|
|
const void *value) const
|
|
{
|
|
BLI_assert(this->attribute_domain_supported(domain));
|
|
if (value == nullptr || in_data_type == out_data_type) {
|
|
return this->attribute_get_constant_for_read(domain, out_data_type, value);
|
|
}
|
|
|
|
const blender::fn::CPPType *in_cpp_type = blender::bke::custom_data_type_to_cpp_type(
|
|
in_data_type);
|
|
const blender::fn::CPPType *out_cpp_type = blender::bke::custom_data_type_to_cpp_type(
|
|
out_data_type);
|
|
BLI_assert(in_cpp_type != nullptr);
|
|
BLI_assert(out_cpp_type != nullptr);
|
|
|
|
const blender::nodes::DataTypeConversions &conversions =
|
|
blender::nodes::get_implicit_type_conversions();
|
|
BLI_assert(conversions.is_convertible(*in_cpp_type, *out_cpp_type));
|
|
|
|
void *out_value = alloca(out_cpp_type->size());
|
|
conversions.convert(*in_cpp_type, *out_cpp_type, value, out_value);
|
|
|
|
const int domain_size = this->attribute_domain_size(domain);
|
|
blender::bke::ReadAttributePtr attribute = std::make_unique<blender::bke::ConstantReadAttribute>(
|
|
domain, domain_size, *out_cpp_type, out_value);
|
|
|
|
out_cpp_type->destruct(out_value);
|
|
return attribute;
|
|
}
|
|
|
|
OutputAttributePtr GeometryComponent::attribute_try_get_for_output(const StringRef attribute_name,
|
|
const AttributeDomain domain,
|
|
const CustomDataType data_type,
|
|
const void *default_value)
|
|
{
|
|
const blender::fn::CPPType *cpp_type = blender::bke::custom_data_type_to_cpp_type(data_type);
|
|
BLI_assert(cpp_type != nullptr);
|
|
|
|
WriteAttributePtr attribute = this->attribute_try_get_for_write(attribute_name);
|
|
|
|
/* If the attribute doesn't exist, make a new one with the correct type. */
|
|
if (!attribute) {
|
|
this->attribute_try_create(attribute_name, domain, data_type);
|
|
attribute = this->attribute_try_get_for_write(attribute_name);
|
|
if (attribute && default_value != nullptr) {
|
|
void *data = attribute->get_span_for_write_only().data();
|
|
cpp_type->fill_initialized(default_value, data, attribute->size());
|
|
attribute->apply_span();
|
|
}
|
|
return OutputAttributePtr(std::move(attribute));
|
|
}
|
|
|
|
/* If an existing attribute has a matching domain and type, just use that. */
|
|
if (attribute->domain() == domain && attribute->cpp_type() == *cpp_type) {
|
|
return OutputAttributePtr(std::move(attribute));
|
|
}
|
|
|
|
/* Otherwise create a temporary buffer to use before saving the new attribute. */
|
|
return OutputAttributePtr(*this, domain, attribute_name, data_type);
|
|
}
|
|
|
|
/* Construct from an attribute that already exists in the geometry component. */
|
|
OutputAttributePtr::OutputAttributePtr(WriteAttributePtr attribute)
|
|
: attribute_(std::move(attribute))
|
|
{
|
|
}
|
|
|
|
/* Construct a temporary attribute that has to replace an existing one later on. */
|
|
OutputAttributePtr::OutputAttributePtr(GeometryComponent &component,
|
|
AttributeDomain domain,
|
|
std::string final_name,
|
|
CustomDataType data_type)
|
|
{
|
|
const blender::fn::CPPType *cpp_type = blender::bke::custom_data_type_to_cpp_type(data_type);
|
|
BLI_assert(cpp_type != nullptr);
|
|
|
|
const int domain_size = component.attribute_domain_size(domain);
|
|
void *buffer = MEM_malloc_arrayN(domain_size, cpp_type->size(), __func__);
|
|
GMutableSpan new_span{*cpp_type, buffer, domain_size};
|
|
|
|
/* Copy converted values from conflicting attribute, in case the value is read.
|
|
* TODO: An optimization could be to not do this, when the caller says that the attribute will
|
|
* only be written. */
|
|
ReadAttributePtr src_attribute = component.attribute_get_for_read(
|
|
final_name, domain, data_type, nullptr);
|
|
for (const int i : blender::IndexRange(domain_size)) {
|
|
src_attribute->get(i, new_span[i]);
|
|
}
|
|
|
|
attribute_ = std::make_unique<blender::bke::TemporaryWriteAttribute>(
|
|
domain, new_span, component, std::move(final_name));
|
|
}
|
|
|
|
/* Store the computed attribute. If it was stored from the beginning already, nothing is done. This
|
|
* might delete another attribute with the same name. */
|
|
void OutputAttributePtr::save()
|
|
{
|
|
if (!attribute_) {
|
|
CLOG_WARN(&LOG, "Trying to save an attribute that does not exist anymore.");
|
|
return;
|
|
}
|
|
|
|
blender::bke::TemporaryWriteAttribute *attribute =
|
|
dynamic_cast<blender::bke::TemporaryWriteAttribute *>(attribute_.get());
|
|
|
|
if (attribute == nullptr) {
|
|
/* The attribute is saved already. */
|
|
attribute_.reset();
|
|
return;
|
|
}
|
|
|
|
StringRefNull name = attribute->final_name;
|
|
const blender::fn::CPPType &cpp_type = attribute->cpp_type();
|
|
|
|
/* Delete an existing attribute with the same name if necessary. */
|
|
attribute->component.attribute_try_delete(name);
|
|
|
|
if (!attribute->component.attribute_try_create(
|
|
name, attribute_->domain(), attribute_->custom_data_type())) {
|
|
/* Cannot create the target attribute for some reason. */
|
|
CLOG_WARN(&LOG,
|
|
"Creating the '%s' attribute with type '%s' failed.",
|
|
name.c_str(),
|
|
cpp_type.name().c_str());
|
|
attribute_.reset();
|
|
return;
|
|
}
|
|
|
|
WriteAttributePtr new_attribute = attribute->component.attribute_try_get_for_write(name);
|
|
|
|
GMutableSpan temp_span = attribute->data;
|
|
GMutableSpan new_span = new_attribute->get_span_for_write_only();
|
|
BLI_assert(temp_span.size() == new_span.size());
|
|
|
|
/* Currently we copy over the attribute. In the future we want to reuse the buffer. */
|
|
cpp_type.move_to_initialized_n(temp_span.data(), new_span.data(), new_span.size());
|
|
new_attribute->apply_span();
|
|
|
|
attribute_.reset();
|
|
}
|
|
|
|
OutputAttributePtr::~OutputAttributePtr()
|
|
{
|
|
if (attribute_) {
|
|
CLOG_ERROR(&LOG, "Forgot to call #save or #apply_span_and_save.");
|
|
}
|
|
}
|
|
|
|
/* Utility function to call #apply_span and #save in the right order. */
|
|
void OutputAttributePtr::apply_span_and_save()
|
|
{
|
|
BLI_assert(attribute_);
|
|
attribute_->apply_span();
|
|
this->save();
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Point Cloud Component
|
|
* \{ */
|
|
|
|
const blender::bke::ComponentAttributeProviders *PointCloudComponent::get_attribute_providers()
|
|
const
|
|
{
|
|
static blender::bke::ComponentAttributeProviders providers =
|
|
blender::bke::create_attribute_providers_for_point_cloud();
|
|
return &providers;
|
|
}
|
|
|
|
int PointCloudComponent::attribute_domain_size(const AttributeDomain domain) const
|
|
{
|
|
BLI_assert(domain == ATTR_DOMAIN_POINT);
|
|
UNUSED_VARS_NDEBUG(domain);
|
|
if (pointcloud_ == nullptr) {
|
|
return 0;
|
|
}
|
|
return pointcloud_->totpoint;
|
|
}
|
|
|
|
/** \} */
|
|
|
|
/* -------------------------------------------------------------------- */
|
|
/** \name Mesh Component
|
|
* \{ */
|
|
|
|
const blender::bke::ComponentAttributeProviders *MeshComponent::get_attribute_providers() const
|
|
{
|
|
static blender::bke::ComponentAttributeProviders providers =
|
|
blender::bke::create_attribute_providers_for_mesh();
|
|
return &providers;
|
|
}
|
|
|
|
int MeshComponent::attribute_domain_size(const AttributeDomain domain) const
|
|
{
|
|
BLI_assert(this->attribute_domain_supported(domain));
|
|
if (mesh_ == nullptr) {
|
|
return 0;
|
|
}
|
|
switch (domain) {
|
|
case ATTR_DOMAIN_CORNER:
|
|
return mesh_->totloop;
|
|
case ATTR_DOMAIN_POINT:
|
|
return mesh_->totvert;
|
|
case ATTR_DOMAIN_EDGE:
|
|
return mesh_->totedge;
|
|
case ATTR_DOMAIN_POLYGON:
|
|
return mesh_->totpoly;
|
|
default:
|
|
BLI_assert(false);
|
|
break;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
namespace blender::bke {
|
|
|
|
template<typename T>
|
|
static void adapt_mesh_domain_corner_to_point_impl(const Mesh &mesh,
|
|
const TypedReadAttribute<T> &attribute,
|
|
MutableSpan<T> r_values)
|
|
{
|
|
BLI_assert(r_values.size() == mesh.totvert);
|
|
attribute_math::DefaultMixer<T> mixer(r_values);
|
|
|
|
for (const int loop_index : IndexRange(mesh.totloop)) {
|
|
const T value = attribute[loop_index];
|
|
const MLoop &loop = mesh.mloop[loop_index];
|
|
const int point_index = loop.v;
|
|
mixer.mix_in(point_index, value);
|
|
}
|
|
mixer.finalize();
|
|
}
|
|
|
|
static ReadAttributePtr adapt_mesh_domain_corner_to_point(const Mesh &mesh,
|
|
ReadAttributePtr attribute)
|
|
{
|
|
ReadAttributePtr new_attribute;
|
|
const CustomDataType data_type = attribute->custom_data_type();
|
|
attribute_math::convert_to_static_type(data_type, [&](auto dummy) {
|
|
using T = decltype(dummy);
|
|
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
|
|
/* We compute all interpolated values at once, because for this interpolation, one has to
|
|
* iterate over all loops anyway. */
|
|
Array<T> values(mesh.totvert);
|
|
adapt_mesh_domain_corner_to_point_impl<T>(mesh, *attribute, values);
|
|
new_attribute = std::make_unique<OwnedArrayReadAttribute<T>>(ATTR_DOMAIN_POINT,
|
|
std::move(values));
|
|
}
|
|
});
|
|
return new_attribute;
|
|
}
|
|
|
|
template<typename T>
|
|
static void adapt_mesh_domain_point_to_corner_impl(const Mesh &mesh,
|
|
const TypedReadAttribute<T> &attribute,
|
|
MutableSpan<T> r_values)
|
|
{
|
|
BLI_assert(r_values.size() == mesh.totloop);
|
|
|
|
for (const int loop_index : IndexRange(mesh.totloop)) {
|
|
const int vertex_index = mesh.mloop[loop_index].v;
|
|
r_values[loop_index] = attribute[vertex_index];
|
|
}
|
|
}
|
|
|
|
static ReadAttributePtr adapt_mesh_domain_point_to_corner(const Mesh &mesh,
|
|
ReadAttributePtr attribute)
|
|
{
|
|
ReadAttributePtr new_attribute;
|
|
const CustomDataType data_type = attribute->custom_data_type();
|
|
attribute_math::convert_to_static_type(data_type, [&](auto dummy) {
|
|
using T = decltype(dummy);
|
|
/* It is not strictly necessary to compute the value for all corners here. Instead one could
|
|
* lazily lookup the mesh topology when a specific index accessed. This can be more efficient
|
|
* when an algorithm only accesses very few of the corner values. However, for the algorithms
|
|
* we currently have, precomputing the array is fine. Also, it is easier to implement. */
|
|
Array<T> values(mesh.totloop);
|
|
adapt_mesh_domain_point_to_corner_impl<T>(mesh, *attribute, values);
|
|
new_attribute = std::make_unique<OwnedArrayReadAttribute<T>>(ATTR_DOMAIN_CORNER,
|
|
std::move(values));
|
|
});
|
|
return new_attribute;
|
|
}
|
|
|
|
} // namespace blender::bke
|
|
|
|
ReadAttributePtr MeshComponent::attribute_try_adapt_domain(ReadAttributePtr attribute,
|
|
const AttributeDomain new_domain) const
|
|
{
|
|
if (!attribute) {
|
|
return {};
|
|
}
|
|
if (attribute->size() == 0) {
|
|
return {};
|
|
}
|
|
const AttributeDomain old_domain = attribute->domain();
|
|
if (old_domain == new_domain) {
|
|
return attribute;
|
|
}
|
|
|
|
switch (old_domain) {
|
|
case ATTR_DOMAIN_CORNER: {
|
|
switch (new_domain) {
|
|
case ATTR_DOMAIN_POINT:
|
|
return blender::bke::adapt_mesh_domain_corner_to_point(*mesh_, std::move(attribute));
|
|
default:
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
case ATTR_DOMAIN_POINT: {
|
|
switch (new_domain) {
|
|
case ATTR_DOMAIN_CORNER:
|
|
return blender::bke::adapt_mesh_domain_point_to_corner(*mesh_, std::move(attribute));
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return {};
|
|
}
|
|
|
|
/** \} */
|