1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include "node_geometry_util.hh"
#include "UI_interface.h"
#include "UI_resources.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "BLI_task.hh"
#include "BKE_material.h"
namespace blender::nodes {
static void geo_node_material_selection_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Material>("Material").hide_label(true);
b.add_output<decl::Bool>("Selection").field_source();
}
static void select_mesh_by_material(const Mesh &mesh,
const Material *material,
const IndexMask mask,
const MutableSpan<bool> r_selection)
{
BLI_assert(mesh.totpoly >= r_selection.size());
Vector<int> material_indices;
for (const int i : IndexRange(mesh.totcol)) {
if (mesh.mat[i] == material) {
material_indices.append(i);
}
}
threading::parallel_for(mask.index_range(), 1024, [&](IndexRange range) {
for (const int i : range) {
const int face_index = mask[i];
r_selection[i] = material_indices.contains(mesh.mpoly[face_index].mat_nr);
}
});
}
class MaterialSelectionFieldInput final : public fn::FieldInput {
Material *material_;
public:
MaterialSelectionFieldInput(Material *material)
: fn::FieldInput(CPPType::get<bool>(), "Material Selection"), material_(material)
{
}
const GVArray *get_varray_for_context(const fn::FieldContext &context,
IndexMask mask,
ResourceScope &scope) const final
{
if (const GeometryComponentFieldContext *geometry_context =
dynamic_cast<const GeometryComponentFieldContext *>(&context)) {
const GeometryComponent &component = geometry_context->geometry_component();
const AttributeDomain domain = geometry_context->domain();
if (component.type() != GEO_COMPONENT_TYPE_MESH) {
return nullptr;
}
const MeshComponent &mesh_component = static_cast<const MeshComponent &>(component);
const Mesh *mesh = mesh_component.get_for_read();
if (mesh == nullptr) {
return nullptr;
}
if (domain == ATTR_DOMAIN_FACE) {
Array<bool> selection(mask.min_array_size());
select_mesh_by_material(*mesh, material_, mask, selection);
return &scope.construct<fn::GVArray_For_ArrayContainer<Array<bool>>>(std::move(selection));
}
Array<bool> selection(mesh->totpoly);
select_mesh_by_material(*mesh, material_, IndexMask(mesh->totpoly), selection);
GVArrayPtr face_selection = std::make_unique<fn::GVArray_For_ArrayContainer<Array<bool>>>(
std::move(selection));
GVArrayPtr final_selection = mesh_component.attribute_try_adapt_domain(
std::move(face_selection), ATTR_DOMAIN_FACE, domain);
return scope.add_value(std::move(final_selection)).get();
}
return nullptr;
}
uint64_t hash() const override
{
return get_default_hash(material_);
}
bool is_equal_to(const fn::FieldNode &other) const override
{
if (const MaterialSelectionFieldInput *other_material_selection =
dynamic_cast<const MaterialSelectionFieldInput *>(&other)) {
return material_ == other_material_selection->material_;
}
return false;
}
};
static void geo_node_material_selection_exec(GeoNodeExecParams params)
{
Material *material = params.extract_input<Material *>("Material");
Field<bool> material_field{std::make_shared<MaterialSelectionFieldInput>(material)};
params.set_output("Selection", std::move(material_field));
}
} // namespace blender::nodes
void register_node_type_geo_material_selection()
{
static bNodeType ntype;
geo_node_type_base(
&ntype, GEO_NODE_MATERIAL_SELECTION, "Material Selection", NODE_CLASS_GEOMETRY, 0);
ntype.declare = blender::nodes::geo_node_material_selection_declare;
ntype.geometry_node_execute = blender::nodes::geo_node_material_selection_exec;
nodeRegisterType(&ntype);
}
|
