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/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BKE_mesh.h"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_input_mesh_edge_vertices_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_output<decl::Int>(N_("Vertex Index 1"))
.field_source()
.description(N_("The index of the first vertex in the edge"));
b.add_output<decl::Int>(N_("Vertex Index 2"))
.field_source()
.description(N_("The index of the second vertex in the edge"));
b.add_output<decl::Vector>(N_("Position 1"))
.field_source()
.description(N_("The position of the first vertex in the edge"));
b.add_output<decl::Vector>(N_("Position 2"))
.field_source()
.description(N_("The position of the second vertex in the edge"));
}
enum VertexNumber { VERTEX_ONE, VERTEX_TWO };
static VArray<int> construct_edge_vertices_gvarray(const MeshComponent &component,
const VertexNumber vertex,
const eAttrDomain domain)
{
const Mesh *mesh = component.get_for_read();
if (mesh == nullptr) {
return {};
}
if (domain == ATTR_DOMAIN_EDGE) {
if (vertex == VERTEX_ONE) {
return VArray<int>::ForFunc(mesh->totedge,
[mesh](const int i) -> int { return mesh->medge[i].v1; });
}
return VArray<int>::ForFunc(mesh->totedge,
[mesh](const int i) -> int { return mesh->medge[i].v2; });
}
return {};
}
class EdgeVerticesFieldInput final : public GeometryFieldInput {
private:
VertexNumber vertex_;
public:
EdgeVerticesFieldInput(VertexNumber vertex)
: GeometryFieldInput(CPPType::get<int>(), "Edge Vertices Field"), vertex_(vertex)
{
category_ = Category::Generated;
}
GVArray get_varray_for_context(const GeometryComponent &component,
const eAttrDomain domain,
IndexMask UNUSED(mask)) const final
{
if (component.type() == GEO_COMPONENT_TYPE_MESH) {
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
return construct_edge_vertices_gvarray(mesh_component, vertex_, domain);
}
return {};
}
uint64_t hash() const override
{
return vertex_ == VERTEX_ONE ? 23847562893465 : 92384598734567;
}
bool is_equal_to(const fn::FieldNode &other) const override
{
if (const EdgeVerticesFieldInput *other_field = dynamic_cast<const EdgeVerticesFieldInput *>(
&other)) {
return vertex_ == other_field->vertex_;
}
return false;
}
};
static VArray<float3> construct_edge_positions_gvarray(const MeshComponent &component,
const VertexNumber vertex,
const eAttrDomain domain)
{
const Mesh *mesh = component.get_for_read();
if (mesh == nullptr) {
return {};
}
if (vertex == VERTEX_ONE) {
return component.attribute_try_adapt_domain<float3>(
VArray<float3>::ForFunc(
mesh->totedge,
[mesh](const int i) { return float3(mesh->mvert[mesh->medge[i].v1].co); }),
ATTR_DOMAIN_EDGE,
domain);
}
return component.attribute_try_adapt_domain<float3>(
VArray<float3>::ForFunc(
mesh->totedge,
[mesh](const int i) { return float3(mesh->mvert[mesh->medge[i].v2].co); }),
ATTR_DOMAIN_EDGE,
domain);
}
class EdgePositionFieldInput final : public GeometryFieldInput {
private:
VertexNumber vertex_;
public:
EdgePositionFieldInput(VertexNumber vertex)
: GeometryFieldInput(CPPType::get<float3>(), "Edge Position Field"), vertex_(vertex)
{
category_ = Category::Generated;
}
GVArray get_varray_for_context(const GeometryComponent &component,
const eAttrDomain domain,
IndexMask UNUSED(mask)) const final
{
if (component.type() == GEO_COMPONENT_TYPE_MESH) {
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
return construct_edge_positions_gvarray(mesh_component, vertex_, domain);
}
return {};
}
uint64_t hash() const override
{
return vertex_ == VERTEX_ONE ? 987456978362 : 374587679866;
}
bool is_equal_to(const fn::FieldNode &other) const override
{
if (const EdgePositionFieldInput *other_field = dynamic_cast<const EdgePositionFieldInput *>(
&other)) {
return vertex_ == other_field->vertex_;
}
return false;
}
};
static void node_geo_exec(GeoNodeExecParams params)
{
Field<int> vertex_field_1{std::make_shared<EdgeVerticesFieldInput>(VERTEX_ONE)};
Field<int> vertex_field_2{std::make_shared<EdgeVerticesFieldInput>(VERTEX_TWO)};
Field<float3> position_field_1{std::make_shared<EdgePositionFieldInput>(VERTEX_ONE)};
Field<float3> position_field_2{std::make_shared<EdgePositionFieldInput>(VERTEX_TWO)};
params.set_output("Vertex Index 1", std::move(vertex_field_1));
params.set_output("Vertex Index 2", std::move(vertex_field_2));
params.set_output("Position 1", std::move(position_field_1));
params.set_output("Position 2", std::move(position_field_2));
}
} // namespace blender::nodes::node_geo_input_mesh_edge_vertices_cc
void register_node_type_geo_input_mesh_edge_vertices()
{
namespace file_ns = blender::nodes::node_geo_input_mesh_edge_vertices_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_INPUT_MESH_EDGE_VERTICES, "Edge Vertices", NODE_CLASS_INPUT);
ntype.declare = file_ns::node_declare;
ntype.geometry_node_execute = file_ns::node_geo_exec;
nodeRegisterType(&ntype);
}
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