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|
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "BLI_listbase.h"
#include "BLI_task.hh"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "DNA_object_types.h"
#include "BKE_attribute_math.hh"
#include "BKE_deform.h"
#include "BKE_geometry_fields.hh"
#include "BKE_geometry_set.hh"
#include "BKE_lib_id.h"
#include "BKE_mesh.h"
#include "FN_multi_function_builder.hh"
#include "attribute_access_intern.hh"
extern "C" MDeformVert *BKE_object_defgroup_data_create(ID *id);
/* -------------------------------------------------------------------- */
/** \name Geometry Component Implementation
* \{ */
MeshComponent::MeshComponent() : GeometryComponent(GEO_COMPONENT_TYPE_MESH)
{
}
MeshComponent::~MeshComponent()
{
this->clear();
}
GeometryComponent *MeshComponent::copy() const
{
MeshComponent *new_component = new MeshComponent();
if (mesh_ != nullptr) {
new_component->mesh_ = BKE_mesh_copy_for_eval(mesh_, false);
new_component->ownership_ = GeometryOwnershipType::Owned;
}
return new_component;
}
void MeshComponent::clear()
{
BLI_assert(this->is_mutable());
if (mesh_ != nullptr) {
if (ownership_ == GeometryOwnershipType::Owned) {
BKE_id_free(nullptr, mesh_);
}
mesh_ = nullptr;
}
}
bool MeshComponent::has_mesh() const
{
return mesh_ != nullptr;
}
void MeshComponent::replace(Mesh *mesh, GeometryOwnershipType ownership)
{
BLI_assert(this->is_mutable());
this->clear();
mesh_ = mesh;
ownership_ = ownership;
}
Mesh *MeshComponent::release()
{
BLI_assert(this->is_mutable());
Mesh *mesh = mesh_;
mesh_ = nullptr;
return mesh;
}
const Mesh *MeshComponent::get_for_read() const
{
return mesh_;
}
Mesh *MeshComponent::get_for_write()
{
BLI_assert(this->is_mutable());
if (ownership_ == GeometryOwnershipType::ReadOnly) {
mesh_ = BKE_mesh_copy_for_eval(mesh_, false);
ownership_ = GeometryOwnershipType::Owned;
}
return mesh_;
}
bool MeshComponent::is_empty() const
{
return mesh_ == nullptr;
}
bool MeshComponent::owns_direct_data() const
{
return ownership_ == GeometryOwnershipType::Owned;
}
void MeshComponent::ensure_owns_direct_data()
{
BLI_assert(this->is_mutable());
if (ownership_ != GeometryOwnershipType::Owned) {
mesh_ = BKE_mesh_copy_for_eval(mesh_, false);
ownership_ = GeometryOwnershipType::Owned;
}
}
/** \} */
/* -------------------------------------------------------------------- */
/** \name Mesh Normals Field Input
* \{ */
namespace blender::bke {
VArray<float3> mesh_normals_varray(const Mesh &mesh,
const IndexMask mask,
const eAttrDomain domain)
{
switch (domain) {
case ATTR_DOMAIN_FACE: {
return VArray<float3>::ForSpan(
{(float3 *)BKE_mesh_poly_normals_ensure(&mesh), mesh.totpoly});
}
case ATTR_DOMAIN_POINT: {
return VArray<float3>::ForSpan(
{(float3 *)BKE_mesh_vertex_normals_ensure(&mesh), mesh.totvert});
}
case ATTR_DOMAIN_EDGE: {
/* In this case, start with vertex normals and convert to the edge domain, since the
* conversion from edges to vertices is very simple. Use "manual" domain interpolation
* instead of the GeometryComponent API to avoid calculating unnecessary values and to
* allow normalizing the result more simply. */
Span<float3> vert_normals{(float3 *)BKE_mesh_vertex_normals_ensure(&mesh), mesh.totvert};
const Span<MEdge> edges = mesh.edges();
Array<float3> edge_normals(mask.min_array_size());
for (const int i : mask) {
const MEdge &edge = edges[i];
edge_normals[i] = math::normalize(
math::interpolate(vert_normals[edge.v1], vert_normals[edge.v2], 0.5f));
}
return VArray<float3>::ForContainer(std::move(edge_normals));
}
case ATTR_DOMAIN_CORNER: {
/* The normals on corners are just the mesh's face normals, so start with the face normal
* array and copy the face normal for each of its corners. In this case using the mesh
* component's generic domain interpolation is fine, the data will still be normalized,
* since the face normal is just copied to every corner. */
return mesh.attributes().adapt_domain(
VArray<float3>::ForSpan({(float3 *)BKE_mesh_poly_normals_ensure(&mesh), mesh.totpoly}),
ATTR_DOMAIN_FACE,
ATTR_DOMAIN_CORNER);
}
default:
return {};
}
}
} // namespace blender::bke
/** \} */
/* -------------------------------------------------------------------- */
/** \name Attribute Access
* \{ */
namespace blender::bke {
template<typename T>
static void adapt_mesh_domain_corner_to_point_impl(const Mesh &mesh,
const VArray<T> &old_values,
MutableSpan<T> r_values)
{
BLI_assert(r_values.size() == mesh.totvert);
const Span<MLoop> loops = mesh.loops();
attribute_math::DefaultMixer<T> mixer(r_values);
for (const int loop_index : IndexRange(mesh.totloop)) {
const T value = old_values[loop_index];
const MLoop &loop = loops[loop_index];
const int point_index = loop.v;
mixer.mix_in(point_index, value);
}
mixer.finalize();
}
/* A vertex is selected if all connected face corners were selected and it is not loose. */
template<>
void adapt_mesh_domain_corner_to_point_impl(const Mesh &mesh,
const VArray<bool> &old_values,
MutableSpan<bool> r_values)
{
BLI_assert(r_values.size() == mesh.totvert);
const Span<MLoop> loops = mesh.loops();
Array<bool> loose_verts(mesh.totvert, true);
r_values.fill(true);
for (const int loop_index : IndexRange(mesh.totloop)) {
const MLoop &loop = loops[loop_index];
const int point_index = loop.v;
loose_verts[point_index] = false;
if (!old_values[loop_index]) {
r_values[point_index] = false;
}
}
/* Deselect loose vertices without corners that are still selected from the 'true' default. */
for (const int vert_index : IndexRange(mesh.totvert)) {
if (loose_verts[vert_index]) {
r_values[vert_index] = false;
}
}
}
static GVArray adapt_mesh_domain_corner_to_point(const Mesh &mesh, const GVArray &varray)
{
GVArray new_varray;
attribute_math::convert_to_static_type(varray.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, varray.typed<T>(), values);
new_varray = VArray<T>::ForContainer(std::move(values));
}
});
return new_varray;
}
/**
* Each corner's value is simply a copy of the value at its vertex.
*/
static GVArray adapt_mesh_domain_point_to_corner(const Mesh &mesh, const GVArray &varray)
{
const Span<MLoop> loops = mesh.loops();
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
new_varray = VArray<T>::ForFunc(mesh.totloop,
[loops, varray = varray.typed<T>()](const int64_t loop_index) {
const int vertex_index = loops[loop_index].v;
return varray[vertex_index];
});
});
return new_varray;
}
static GVArray adapt_mesh_domain_corner_to_face(const Mesh &mesh, const GVArray &varray)
{
const Span<MPoly> polys = mesh.polys();
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
if constexpr (std::is_same_v<T, bool>) {
new_varray = VArray<T>::ForFunc(
polys.size(), [polys, varray = varray.typed<bool>()](const int face_index) {
/* A face is selected if all of its corners were selected. */
const MPoly &poly = polys[face_index];
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
if (!varray[loop_index]) {
return false;
}
}
return true;
});
}
else {
new_varray = VArray<T>::ForFunc(
polys.size(), [polys, varray = varray.typed<T>()](const int face_index) {
T return_value;
attribute_math::DefaultMixer<T> mixer({&return_value, 1});
const MPoly &poly = polys[face_index];
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const T value = varray[loop_index];
mixer.mix_in(0, value);
}
mixer.finalize();
return return_value;
});
}
}
});
return new_varray;
}
template<typename T>
static void adapt_mesh_domain_corner_to_edge_impl(const Mesh &mesh,
const VArray<T> &old_values,
MutableSpan<T> r_values)
{
BLI_assert(r_values.size() == mesh.totedge);
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
attribute_math::DefaultMixer<T> mixer(r_values);
for (const int poly_index : polys.index_range()) {
const MPoly &poly = polys[poly_index];
/* For every edge, mix values from the two adjacent corners (the current and next corner). */
for (const int i : IndexRange(poly.totloop)) {
const int next_i = (i + 1) % poly.totloop;
const int loop_i = poly.loopstart + i;
const int next_loop_i = poly.loopstart + next_i;
const MLoop &loop = loops[loop_i];
const int edge_index = loop.e;
mixer.mix_in(edge_index, old_values[loop_i]);
mixer.mix_in(edge_index, old_values[next_loop_i]);
}
}
mixer.finalize();
}
/* An edge is selected if all corners on adjacent faces were selected. */
template<>
void adapt_mesh_domain_corner_to_edge_impl(const Mesh &mesh,
const VArray<bool> &old_values,
MutableSpan<bool> r_values)
{
BLI_assert(r_values.size() == mesh.totedge);
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
/* It may be possible to rely on the #ME_LOOSEEDGE flag, but that seems error-prone. */
Array<bool> loose_edges(mesh.totedge, true);
r_values.fill(true);
for (const int poly_index : polys.index_range()) {
const MPoly &poly = polys[poly_index];
for (const int i : IndexRange(poly.totloop)) {
const int next_i = (i + 1) % poly.totloop;
const int loop_i = poly.loopstart + i;
const int next_loop_i = poly.loopstart + next_i;
const MLoop &loop = loops[loop_i];
const int edge_index = loop.e;
loose_edges[edge_index] = false;
if (!old_values[loop_i] || !old_values[next_loop_i]) {
r_values[edge_index] = false;
}
}
}
/* Deselect loose edges without corners that are still selected from the 'true' default. */
threading::parallel_for(IndexRange(mesh.totedge), 2048, [&](const IndexRange range) {
for (const int edge_index : range) {
if (loose_edges[edge_index]) {
r_values[edge_index] = false;
}
}
});
}
static GVArray adapt_mesh_domain_corner_to_edge(const Mesh &mesh, const GVArray &varray)
{
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
Array<T> values(mesh.totedge);
adapt_mesh_domain_corner_to_edge_impl<T>(mesh, varray.typed<T>(), values);
new_varray = VArray<T>::ForContainer(std::move(values));
}
});
return new_varray;
}
template<typename T>
void adapt_mesh_domain_face_to_point_impl(const Mesh &mesh,
const VArray<T> &old_values,
MutableSpan<T> r_values)
{
BLI_assert(r_values.size() == mesh.totvert);
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
attribute_math::DefaultMixer<T> mixer(r_values);
for (const int poly_index : polys.index_range()) {
const MPoly &poly = polys[poly_index];
const T value = old_values[poly_index];
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const MLoop &loop = loops[loop_index];
const int point_index = loop.v;
mixer.mix_in(point_index, value);
}
}
mixer.finalize();
}
/* A vertex is selected if any of the connected faces were selected. */
template<>
void adapt_mesh_domain_face_to_point_impl(const Mesh &mesh,
const VArray<bool> &old_values,
MutableSpan<bool> r_values)
{
BLI_assert(r_values.size() == mesh.totvert);
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
r_values.fill(false);
for (const int poly_index : polys.index_range()) {
const MPoly &poly = polys[poly_index];
if (old_values[poly_index]) {
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const MLoop &loop = loops[loop_index];
const int vert_index = loop.v;
r_values[vert_index] = true;
}
}
}
}
static GVArray adapt_mesh_domain_face_to_point(const Mesh &mesh, const GVArray &varray)
{
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
Array<T> values(mesh.totvert);
adapt_mesh_domain_face_to_point_impl<T>(mesh, varray.typed<T>(), values);
new_varray = VArray<T>::ForContainer(std::move(values));
}
});
return new_varray;
}
/* Each corner's value is simply a copy of the value at its face. */
template<typename T>
void adapt_mesh_domain_face_to_corner_impl(const Mesh &mesh,
const VArray<T> &old_values,
MutableSpan<T> r_values)
{
BLI_assert(r_values.size() == mesh.totloop);
const Span<MPoly> polys = mesh.polys();
threading::parallel_for(polys.index_range(), 1024, [&](const IndexRange range) {
for (const int poly_index : range) {
const MPoly &poly = polys[poly_index];
MutableSpan<T> poly_corner_values = r_values.slice(poly.loopstart, poly.totloop);
poly_corner_values.fill(old_values[poly_index]);
}
});
}
static GVArray adapt_mesh_domain_face_to_corner(const Mesh &mesh, const GVArray &varray)
{
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
Array<T> values(mesh.totloop);
adapt_mesh_domain_face_to_corner_impl<T>(mesh, varray.typed<T>(), values);
new_varray = VArray<T>::ForContainer(std::move(values));
}
});
return new_varray;
}
template<typename T>
void adapt_mesh_domain_face_to_edge_impl(const Mesh &mesh,
const VArray<T> &old_values,
MutableSpan<T> r_values)
{
BLI_assert(r_values.size() == mesh.totedge);
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
attribute_math::DefaultMixer<T> mixer(r_values);
for (const int poly_index : polys.index_range()) {
const MPoly &poly = polys[poly_index];
const T value = old_values[poly_index];
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const MLoop &loop = loops[loop_index];
mixer.mix_in(loop.e, value);
}
}
mixer.finalize();
}
/* An edge is selected if any connected face was selected. */
template<>
void adapt_mesh_domain_face_to_edge_impl(const Mesh &mesh,
const VArray<bool> &old_values,
MutableSpan<bool> r_values)
{
BLI_assert(r_values.size() == mesh.totedge);
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
r_values.fill(false);
for (const int poly_index : polys.index_range()) {
const MPoly &poly = polys[poly_index];
if (old_values[poly_index]) {
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const MLoop &loop = loops[loop_index];
const int edge_index = loop.e;
r_values[edge_index] = true;
}
}
}
}
static GVArray adapt_mesh_domain_face_to_edge(const Mesh &mesh, const GVArray &varray)
{
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
Array<T> values(mesh.totedge);
adapt_mesh_domain_face_to_edge_impl<T>(mesh, varray.typed<T>(), values);
new_varray = VArray<T>::ForContainer(std::move(values));
}
});
return new_varray;
}
static GVArray adapt_mesh_domain_point_to_face(const Mesh &mesh, const GVArray &varray)
{
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
if constexpr (std::is_same_v<T, bool>) {
new_varray = VArray<T>::ForFunc(
mesh.totpoly, [loops, polys, varray = varray.typed<bool>()](const int face_index) {
/* A face is selected if all of its vertices were selected. */
const MPoly &poly = polys[face_index];
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const MLoop &loop = loops[loop_index];
if (!varray[loop.v]) {
return false;
}
}
return true;
});
}
else {
new_varray = VArray<T>::ForFunc(
mesh.totpoly, [loops, polys, varray = varray.typed<T>()](const int face_index) {
T return_value;
attribute_math::DefaultMixer<T> mixer({&return_value, 1});
const MPoly &poly = polys[face_index];
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const MLoop &loop = loops[loop_index];
const T value = varray[loop.v];
mixer.mix_in(0, value);
}
mixer.finalize();
return return_value;
});
}
}
});
return new_varray;
}
static GVArray adapt_mesh_domain_point_to_edge(const Mesh &mesh, const GVArray &varray)
{
const Span<MEdge> edges = mesh.edges();
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
if constexpr (std::is_same_v<T, bool>) {
/* An edge is selected if both of its vertices were selected. */
new_varray = VArray<bool>::ForFunc(
edges.size(), [edges, varray = varray.typed<bool>()](const int edge_index) {
const MEdge &edge = edges[edge_index];
return varray[edge.v1] && varray[edge.v2];
});
}
else {
new_varray = VArray<T>::ForFunc(
edges.size(), [edges, varray = varray.typed<T>()](const int edge_index) {
T return_value;
attribute_math::DefaultMixer<T> mixer({&return_value, 1});
const MEdge &edge = edges[edge_index];
mixer.mix_in(0, varray[edge.v1]);
mixer.mix_in(0, varray[edge.v2]);
mixer.finalize();
return return_value;
});
}
}
});
return new_varray;
}
template<typename T>
void adapt_mesh_domain_edge_to_corner_impl(const Mesh &mesh,
const VArray<T> &old_values,
MutableSpan<T> r_values)
{
BLI_assert(r_values.size() == mesh.totloop);
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
attribute_math::DefaultMixer<T> mixer(r_values);
for (const int poly_index : polys.index_range()) {
const MPoly &poly = polys[poly_index];
/* For every corner, mix the values from the adjacent edges on the face. */
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const int loop_index_prev = loop_index - 1 + (loop_index == poly.loopstart) * poly.totloop;
const MLoop &loop = loops[loop_index];
const MLoop &loop_prev = loops[loop_index_prev];
mixer.mix_in(loop_index, old_values[loop.e]);
mixer.mix_in(loop_index, old_values[loop_prev.e]);
}
}
mixer.finalize();
}
/* A corner is selected if its two adjacent edges were selected. */
template<>
void adapt_mesh_domain_edge_to_corner_impl(const Mesh &mesh,
const VArray<bool> &old_values,
MutableSpan<bool> r_values)
{
BLI_assert(r_values.size() == mesh.totloop);
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
r_values.fill(false);
for (const int poly_index : polys.index_range()) {
const MPoly &poly = polys[poly_index];
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const int loop_index_prev = loop_index - 1 + (loop_index == poly.loopstart) * poly.totloop;
const MLoop &loop = loops[loop_index];
const MLoop &loop_prev = loops[loop_index_prev];
if (old_values[loop.e] && old_values[loop_prev.e]) {
r_values[loop_index] = true;
}
}
}
}
static GVArray adapt_mesh_domain_edge_to_corner(const Mesh &mesh, const GVArray &varray)
{
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
Array<T> values(mesh.totloop);
adapt_mesh_domain_edge_to_corner_impl<T>(mesh, varray.typed<T>(), values);
new_varray = VArray<T>::ForContainer(std::move(values));
}
});
return new_varray;
}
template<typename T>
static void adapt_mesh_domain_edge_to_point_impl(const Mesh &mesh,
const VArray<T> &old_values,
MutableSpan<T> r_values)
{
BLI_assert(r_values.size() == mesh.totvert);
const Span<MEdge> edges = mesh.edges();
attribute_math::DefaultMixer<T> mixer(r_values);
for (const int edge_index : IndexRange(mesh.totedge)) {
const MEdge &edge = edges[edge_index];
const T value = old_values[edge_index];
mixer.mix_in(edge.v1, value);
mixer.mix_in(edge.v2, value);
}
mixer.finalize();
}
/* A vertex is selected if any connected edge was selected. */
template<>
void adapt_mesh_domain_edge_to_point_impl(const Mesh &mesh,
const VArray<bool> &old_values,
MutableSpan<bool> r_values)
{
BLI_assert(r_values.size() == mesh.totvert);
const Span<MEdge> edges = mesh.edges();
r_values.fill(false);
for (const int edge_index : edges.index_range()) {
const MEdge &edge = edges[edge_index];
if (old_values[edge_index]) {
r_values[edge.v1] = true;
r_values[edge.v2] = true;
}
}
}
static GVArray adapt_mesh_domain_edge_to_point(const Mesh &mesh, const GVArray &varray)
{
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
Array<T> values(mesh.totvert);
adapt_mesh_domain_edge_to_point_impl<T>(mesh, varray.typed<T>(), values);
new_varray = VArray<T>::ForContainer(std::move(values));
}
});
return new_varray;
}
static GVArray adapt_mesh_domain_edge_to_face(const Mesh &mesh, const GVArray &varray)
{
const Span<MPoly> polys = mesh.polys();
const Span<MLoop> loops = mesh.loops();
GVArray new_varray;
attribute_math::convert_to_static_type(varray.type(), [&](auto dummy) {
using T = decltype(dummy);
if constexpr (!std::is_void_v<attribute_math::DefaultMixer<T>>) {
if constexpr (std::is_same_v<T, bool>) {
/* A face is selected if all of its edges are selected. */
new_varray = VArray<bool>::ForFunc(
polys.size(), [loops, polys, varray = varray.typed<T>()](const int face_index) {
const MPoly &poly = polys[face_index];
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const MLoop &loop = loops[loop_index];
if (!varray[loop.e]) {
return false;
}
}
return true;
});
}
else {
new_varray = VArray<T>::ForFunc(
polys.size(), [loops, polys, varray = varray.typed<T>()](const int face_index) {
T return_value;
attribute_math::DefaultMixer<T> mixer({&return_value, 1});
const MPoly &poly = polys[face_index];
for (const int loop_index : IndexRange(poly.loopstart, poly.totloop)) {
const MLoop &loop = loops[loop_index];
const T value = varray[loop.e];
mixer.mix_in(0, value);
}
mixer.finalize();
return return_value;
});
}
}
});
return new_varray;
}
} // namespace blender::bke
static blender::GVArray adapt_mesh_attribute_domain(const Mesh &mesh,
const blender::GVArray &varray,
const eAttrDomain from_domain,
const eAttrDomain to_domain)
{
if (!varray) {
return {};
}
if (varray.size() == 0) {
return {};
}
if (from_domain == to_domain) {
return varray;
}
switch (from_domain) {
case ATTR_DOMAIN_CORNER: {
switch (to_domain) {
case ATTR_DOMAIN_POINT:
return blender::bke::adapt_mesh_domain_corner_to_point(mesh, varray);
case ATTR_DOMAIN_FACE:
return blender::bke::adapt_mesh_domain_corner_to_face(mesh, varray);
case ATTR_DOMAIN_EDGE:
return blender::bke::adapt_mesh_domain_corner_to_edge(mesh, varray);
default:
break;
}
break;
}
case ATTR_DOMAIN_POINT: {
switch (to_domain) {
case ATTR_DOMAIN_CORNER:
return blender::bke::adapt_mesh_domain_point_to_corner(mesh, varray);
case ATTR_DOMAIN_FACE:
return blender::bke::adapt_mesh_domain_point_to_face(mesh, varray);
case ATTR_DOMAIN_EDGE:
return blender::bke::adapt_mesh_domain_point_to_edge(mesh, varray);
default:
break;
}
break;
}
case ATTR_DOMAIN_FACE: {
switch (to_domain) {
case ATTR_DOMAIN_POINT:
return blender::bke::adapt_mesh_domain_face_to_point(mesh, varray);
case ATTR_DOMAIN_CORNER:
return blender::bke::adapt_mesh_domain_face_to_corner(mesh, varray);
case ATTR_DOMAIN_EDGE:
return blender::bke::adapt_mesh_domain_face_to_edge(mesh, varray);
default:
break;
}
break;
}
case ATTR_DOMAIN_EDGE: {
switch (to_domain) {
case ATTR_DOMAIN_CORNER:
return blender::bke::adapt_mesh_domain_edge_to_corner(mesh, varray);
case ATTR_DOMAIN_POINT:
return blender::bke::adapt_mesh_domain_edge_to_point(mesh, varray);
case ATTR_DOMAIN_FACE:
return blender::bke::adapt_mesh_domain_edge_to_face(mesh, varray);
default:
break;
}
break;
}
default:
break;
}
return {};
}
namespace blender::bke {
template<typename StructT, typename ElemT, ElemT (*GetFunc)(const StructT &)>
static GVArray make_derived_read_attribute(const void *data, const int domain_num)
{
return VArray<ElemT>::template ForDerivedSpan<StructT, GetFunc>(
Span<StructT>((const StructT *)data, domain_num));
}
template<typename StructT,
typename ElemT,
ElemT (*GetFunc)(const StructT &),
void (*SetFunc)(StructT &, ElemT)>
static GVMutableArray make_derived_write_attribute(void *data, const int domain_num)
{
return VMutableArray<ElemT>::template ForDerivedSpan<StructT, GetFunc, SetFunc>(
MutableSpan<StructT>((StructT *)data, domain_num));
}
static float3 get_vertex_position(const MVert &vert)
{
return float3(vert.co);
}
static void set_vertex_position(MVert &vert, float3 position)
{
copy_v3_v3(vert.co, position);
}
static void tag_component_positions_changed(void *owner)
{
Mesh *mesh = static_cast<Mesh *>(owner);
if (mesh != nullptr) {
BKE_mesh_tag_coords_changed(mesh);
}
}
static bool get_shade_smooth(const MPoly &mpoly)
{
return mpoly.flag & ME_SMOOTH;
}
static void set_shade_smooth(MPoly &mpoly, bool value)
{
SET_FLAG_FROM_TEST(mpoly.flag, value, ME_SMOOTH);
}
static float2 get_loop_uv(const MLoopUV &uv)
{
return float2(uv.uv);
}
static void set_loop_uv(MLoopUV &uv, float2 co)
{
copy_v2_v2(uv.uv, co);
}
static float get_crease(const float &crease)
{
return crease;
}
static void set_crease(float &crease, const float value)
{
crease = std::clamp(value, 0.0f, 1.0f);
}
class VArrayImpl_For_VertexWeights final : public VMutableArrayImpl<float> {
private:
MDeformVert *dverts_;
const int dvert_index_;
public:
VArrayImpl_For_VertexWeights(MutableSpan<MDeformVert> dverts, const int dvert_index)
: VMutableArrayImpl<float>(dverts.size()), dverts_(dverts.data()), dvert_index_(dvert_index)
{
}
VArrayImpl_For_VertexWeights(Span<MDeformVert> dverts, const int dvert_index)
: VMutableArrayImpl<float>(dverts.size()),
dverts_(const_cast<MDeformVert *>(dverts.data())),
dvert_index_(dvert_index)
{
}
float get(const int64_t index) const override
{
if (dverts_ == nullptr) {
return 0.0f;
}
if (const MDeformWeight *weight = this->find_weight_at_index(index)) {
return weight->weight;
}
return 0.0f;
}
void set(const int64_t index, const float value) override
{
MDeformVert &dvert = dverts_[index];
if (value == 0.0f) {
if (MDeformWeight *weight = this->find_weight_at_index(index)) {
weight->weight = 0.0f;
}
}
else {
MDeformWeight *weight = BKE_defvert_ensure_index(&dvert, dvert_index_);
weight->weight = value;
}
}
void set_all(Span<float> src) override
{
for (const int64_t index : src.index_range()) {
this->set(index, src[index]);
}
}
void materialize(IndexMask mask, MutableSpan<float> r_span) const override
{
if (dverts_ == nullptr) {
return r_span.fill_indices(mask, 0.0f);
}
for (const int64_t index : mask) {
if (const MDeformWeight *weight = this->find_weight_at_index(index)) {
r_span[index] = weight->weight;
}
else {
r_span[index] = 0.0f;
}
}
}
void materialize_to_uninitialized(IndexMask mask, MutableSpan<float> r_span) const override
{
this->materialize(mask, r_span);
}
private:
MDeformWeight *find_weight_at_index(const int64_t index)
{
for (MDeformWeight &weight : MutableSpan(dverts_[index].dw, dverts_[index].totweight)) {
if (weight.def_nr == dvert_index_) {
return &weight;
}
}
return nullptr;
}
const MDeformWeight *find_weight_at_index(const int64_t index) const
{
for (const MDeformWeight &weight : Span(dverts_[index].dw, dverts_[index].totweight)) {
if (weight.def_nr == dvert_index_) {
return &weight;
}
}
return nullptr;
}
};
/**
* This provider makes vertex groups available as float attributes.
*/
class VertexGroupsAttributeProvider final : public DynamicAttributesProvider {
public:
GAttributeReader try_get_for_read(const void *owner,
const AttributeIDRef &attribute_id) const final
{
if (!attribute_id.is_named()) {
return {};
}
const Mesh *mesh = static_cast<const Mesh *>(owner);
if (mesh == nullptr) {
return {};
}
const std::string name = attribute_id.name();
const int vertex_group_index = BLI_findstringindex(
&mesh->vertex_group_names, name.c_str(), offsetof(bDeformGroup, name));
if (vertex_group_index < 0) {
return {};
}
const Span<MDeformVert> dverts = mesh->deform_verts();
if (dverts.is_empty()) {
static const float default_value = 0.0f;
return {VArray<float>::ForSingle(default_value, mesh->totvert), ATTR_DOMAIN_POINT};
}
return {VArray<float>::For<VArrayImpl_For_VertexWeights>(dverts, vertex_group_index),
ATTR_DOMAIN_POINT};
}
GAttributeWriter try_get_for_write(void *owner, const AttributeIDRef &attribute_id) const final
{
if (!attribute_id.is_named()) {
return {};
}
Mesh *mesh = static_cast<Mesh *>(owner);
if (mesh == nullptr) {
return {};
}
const std::string name = attribute_id.name();
const int vertex_group_index = BLI_findstringindex(
&mesh->vertex_group_names, name.c_str(), offsetof(bDeformGroup, name));
if (vertex_group_index < 0) {
return {};
}
MutableSpan<MDeformVert> dverts = mesh->deform_verts_for_write();
return {VMutableArray<float>::For<VArrayImpl_For_VertexWeights>(dverts, vertex_group_index),
ATTR_DOMAIN_POINT};
}
bool try_delete(void *owner, const AttributeIDRef &attribute_id) const final
{
if (!attribute_id.is_named()) {
return false;
}
Mesh *mesh = static_cast<Mesh *>(owner);
if (mesh == nullptr) {
return true;
}
const std::string name = attribute_id.name();
int index;
bDeformGroup *group;
if (!BKE_id_defgroup_name_find(&mesh->id, name.c_str(), &index, &group)) {
return false;
}
BLI_remlink(&mesh->vertex_group_names, group);
MEM_freeN(group);
if (mesh->deform_verts().is_empty()) {
return true;
}
for (MDeformVert &dvert : mesh->deform_verts_for_write()) {
MDeformWeight *weight = BKE_defvert_find_index(&dvert, index);
BKE_defvert_remove_group(&dvert, weight);
for (MDeformWeight &weight : MutableSpan(dvert.dw, dvert.totweight)) {
if (weight.def_nr > index) {
weight.def_nr--;
}
}
}
return true;
}
bool foreach_attribute(const void *owner, const AttributeForeachCallback callback) const final
{
const Mesh *mesh = static_cast<const Mesh *>(owner);
if (mesh == nullptr) {
return true;
}
LISTBASE_FOREACH (const bDeformGroup *, group, &mesh->vertex_group_names) {
if (!callback(group->name, {ATTR_DOMAIN_POINT, CD_PROP_FLOAT})) {
return false;
}
}
return true;
}
void foreach_domain(const FunctionRef<void(eAttrDomain)> callback) const final
{
callback(ATTR_DOMAIN_POINT);
}
};
/**
* This provider makes face normals available as a read-only float3 attribute.
*/
class NormalAttributeProvider final : public BuiltinAttributeProvider {
public:
NormalAttributeProvider()
: BuiltinAttributeProvider(
"normal", ATTR_DOMAIN_FACE, CD_PROP_FLOAT3, NonCreatable, Readonly, NonDeletable)
{
}
GVArray try_get_for_read(const void *owner) const final
{
const Mesh *mesh = static_cast<const Mesh *>(owner);
if (mesh == nullptr || mesh->totpoly == 0) {
return {};
}
return VArray<float3>::ForSpan({(float3 *)BKE_mesh_poly_normals_ensure(mesh), mesh->totpoly});
}
GAttributeWriter try_get_for_write(void * /*owner*/) const final
{
return {};
}
bool try_delete(void * /*owner*/) const final
{
return false;
}
bool try_create(void * /*owner*/, const AttributeInit & /*initializer*/) const final
{
return false;
}
bool exists(const void *owner) const final
{
const Mesh *mesh = static_cast<const Mesh *>(owner);
return mesh->totpoly != 0;
}
};
/**
* 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()
{
#define MAKE_MUTABLE_CUSTOM_DATA_GETTER(NAME) \
[](void *owner) -> CustomData * { \
Mesh *mesh = static_cast<Mesh *>(owner); \
return &mesh->NAME; \
}
#define MAKE_CONST_CUSTOM_DATA_GETTER(NAME) \
[](const void *owner) -> const CustomData * { \
const Mesh *mesh = static_cast<const Mesh *>(owner); \
return &mesh->NAME; \
}
#define MAKE_GET_ELEMENT_NUM_GETTER(NAME) \
[](const void *owner) -> int { \
const Mesh *mesh = static_cast<const Mesh *>(owner); \
return mesh->NAME; \
}
static CustomDataAccessInfo corner_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(ldata),
MAKE_CONST_CUSTOM_DATA_GETTER(ldata),
MAKE_GET_ELEMENT_NUM_GETTER(totloop)};
static CustomDataAccessInfo point_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(vdata),
MAKE_CONST_CUSTOM_DATA_GETTER(vdata),
MAKE_GET_ELEMENT_NUM_GETTER(totvert)};
static CustomDataAccessInfo edge_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(edata),
MAKE_CONST_CUSTOM_DATA_GETTER(edata),
MAKE_GET_ELEMENT_NUM_GETTER(totedge)};
static CustomDataAccessInfo face_access = {MAKE_MUTABLE_CUSTOM_DATA_GETTER(pdata),
MAKE_CONST_CUSTOM_DATA_GETTER(pdata),
MAKE_GET_ELEMENT_NUM_GETTER(totpoly)};
#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_derived_read_attribute<MVert, float3, get_vertex_position>,
make_derived_write_attribute<MVert, float3, get_vertex_position, set_vertex_position>,
tag_component_positions_changed);
static NormalAttributeProvider normal;
static BuiltinCustomDataLayerProvider id("id",
ATTR_DOMAIN_POINT,
CD_PROP_INT32,
CD_PROP_INT32,
BuiltinAttributeProvider::Creatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::Deletable,
point_access,
make_array_read_attribute<int>,
make_array_write_attribute<int>,
nullptr);
static const fn::CustomMF_SI_SO<int, int> material_index_clamp{
"Material Index Validate",
[](int value) {
/* Use #short for the maximum since many areas still use that type for indices. */
return std::clamp<int>(value, 0, std::numeric_limits<short>::max());
},
fn::CustomMF_presets::AllSpanOrSingle()};
static BuiltinCustomDataLayerProvider material_index("material_index",
ATTR_DOMAIN_FACE,
CD_PROP_INT32,
CD_PROP_INT32,
BuiltinAttributeProvider::Creatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::Deletable,
face_access,
make_array_read_attribute<int>,
make_array_write_attribute<int>,
nullptr,
AttributeValidator{&material_index_clamp});
static BuiltinCustomDataLayerProvider shade_smooth(
"shade_smooth",
ATTR_DOMAIN_FACE,
CD_PROP_BOOL,
CD_MPOLY,
BuiltinAttributeProvider::NonCreatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::NonDeletable,
face_access,
make_derived_read_attribute<MPoly, bool, get_shade_smooth>,
make_derived_write_attribute<MPoly, bool, get_shade_smooth, set_shade_smooth>,
nullptr);
static BuiltinCustomDataLayerProvider crease(
"crease",
ATTR_DOMAIN_EDGE,
CD_PROP_FLOAT,
CD_CREASE,
BuiltinAttributeProvider::Creatable,
BuiltinAttributeProvider::Writable,
BuiltinAttributeProvider::Deletable,
edge_access,
make_array_read_attribute<float>,
make_derived_write_attribute<float, float, get_crease, set_crease>,
nullptr);
static NamedLegacyCustomDataProvider uvs(
ATTR_DOMAIN_CORNER,
CD_PROP_FLOAT2,
CD_MLOOPUV,
corner_access,
make_derived_read_attribute<MLoopUV, float2, get_loop_uv>,
make_derived_write_attribute<MLoopUV, float2, get_loop_uv, set_loop_uv>);
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 face_custom_data(ATTR_DOMAIN_FACE, face_access);
return ComponentAttributeProviders(
{&position, &id, &material_index, &shade_smooth, &normal, &crease},
{&uvs,
&corner_custom_data,
&vertex_groups,
&point_custom_data,
&edge_custom_data,
&face_custom_data});
}
static AttributeAccessorFunctions get_mesh_accessor_functions()
{
static const ComponentAttributeProviders providers = create_attribute_providers_for_mesh();
AttributeAccessorFunctions fn =
attribute_accessor_functions::accessor_functions_for_providers<providers>();
fn.domain_size = [](const void *owner, const eAttrDomain domain) {
if (owner == nullptr) {
return 0;
}
const Mesh &mesh = *static_cast<const Mesh *>(owner);
switch (domain) {
case ATTR_DOMAIN_POINT:
return mesh.totvert;
case ATTR_DOMAIN_EDGE:
return mesh.totedge;
case ATTR_DOMAIN_FACE:
return mesh.totpoly;
case ATTR_DOMAIN_CORNER:
return mesh.totloop;
default:
return 0;
}
};
fn.domain_supported = [](const void * /*owner*/, const eAttrDomain domain) {
return ELEM(domain, ATTR_DOMAIN_POINT, ATTR_DOMAIN_EDGE, ATTR_DOMAIN_FACE, ATTR_DOMAIN_CORNER);
};
fn.adapt_domain = [](const void *owner,
const blender::GVArray &varray,
const eAttrDomain from_domain,
const eAttrDomain to_domain) -> blender::GVArray {
if (owner == nullptr) {
return {};
}
const Mesh &mesh = *static_cast<const Mesh *>(owner);
return adapt_mesh_attribute_domain(mesh, varray, from_domain, to_domain);
};
return fn;
}
static const AttributeAccessorFunctions &get_mesh_accessor_functions_ref()
{
static const AttributeAccessorFunctions fn = get_mesh_accessor_functions();
return fn;
}
} // namespace blender::bke
blender::bke::AttributeAccessor Mesh::attributes() const
{
return blender::bke::AttributeAccessor(this, blender::bke::get_mesh_accessor_functions_ref());
}
blender::bke::MutableAttributeAccessor Mesh::attributes_for_write()
{
return blender::bke::MutableAttributeAccessor(this,
blender::bke::get_mesh_accessor_functions_ref());
}
std::optional<blender::bke::AttributeAccessor> MeshComponent::attributes() const
{
return blender::bke::AttributeAccessor(mesh_, blender::bke::get_mesh_accessor_functions_ref());
}
std::optional<blender::bke::MutableAttributeAccessor> MeshComponent::attributes_for_write()
{
Mesh *mesh = this->get_for_write();
return blender::bke::MutableAttributeAccessor(mesh,
blender::bke::get_mesh_accessor_functions_ref());
}
/** \} */
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