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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
|
/* SPDX-License-Identifier: GPL-2.0-or-later */
#include "GEO_uv_parametrizer.h"
#include "DNA_mesh_types.h"
#include "DNA_meshdata_types.h"
#include "node_geometry_util.hh"
namespace blender::nodes::node_geo_uv_pack_islands_cc {
static void node_declare(NodeDeclarationBuilder &b)
{
b.add_input<decl::Vector>(N_("UV")).hide_value().supports_field();
b.add_input<decl::Bool>(N_("Selection"))
.default_value(true)
.hide_value()
.supports_field()
.description(N_("Faces to consider when packing islands"));
b.add_input<decl::Float>(N_("Margin"))
.default_value(0.001f)
.min(0.0f)
.max(1.0f)
.description(N_("Space between islands"));
b.add_input<decl::Bool>(N_("Rotate"))
.default_value(true)
.description(N_("Rotate islands for best fit"));
b.add_output<decl::Vector>(N_("UV")).field_source();
}
static VArray<float3> construct_uv_gvarray(const MeshComponent &component,
const Field<bool> selection_field,
const Field<float3> uv_field,
const bool rotate,
const float margin,
const eAttrDomain domain)
{
const Mesh *mesh = component.get_for_read();
if (mesh == nullptr) {
return {};
}
const int face_num = component.attribute_domain_size(ATTR_DOMAIN_FACE);
GeometryComponentFieldContext face_context{component, ATTR_DOMAIN_FACE};
FieldEvaluator face_evaluator{face_context, face_num};
face_evaluator.add(selection_field);
face_evaluator.evaluate();
const IndexMask selection = face_evaluator.get_evaluated_as_mask(0);
if (selection.is_empty()) {
return {};
}
const int corner_num = component.attribute_domain_size(ATTR_DOMAIN_CORNER);
GeometryComponentFieldContext corner_context{component, ATTR_DOMAIN_CORNER};
FieldEvaluator evaluator{corner_context, corner_num};
Array<float3> uv(corner_num);
evaluator.add_with_destination(uv_field, uv.as_mutable_span());
evaluator.evaluate();
ParamHandle *handle = GEO_uv_parametrizer_construct_begin();
for (const int mp_index : selection) {
const MPoly &mp = mesh->mpoly[mp_index];
Array<ParamKey, 16> mp_vkeys(mp.totloop);
Array<bool, 16> mp_pin(mp.totloop);
Array<bool, 16> mp_select(mp.totloop);
Array<const float *, 16> mp_co(mp.totloop);
Array<float *, 16> mp_uv(mp.totloop);
for (const int i : IndexRange(mp.totloop)) {
const MLoop &ml = mesh->mloop[mp.loopstart + i];
mp_vkeys[i] = ml.v;
mp_co[i] = mesh->mvert[ml.v].co;
mp_uv[i] = uv[mp.loopstart + i];
mp_pin[i] = false;
mp_select[i] = false;
}
GEO_uv_parametrizer_face_add(handle,
mp_index,
mp.totloop,
mp_vkeys.data(),
mp_co.data(),
mp_uv.data(),
mp_pin.data(),
mp_select.data());
}
GEO_uv_parametrizer_construct_end(handle, true, true, nullptr);
GEO_uv_parametrizer_pack(handle, margin, rotate, true);
GEO_uv_parametrizer_flush(handle);
GEO_uv_parametrizer_delete(handle);
return component.attributes()->adapt_domain<float3>(
VArray<float3>::ForContainer(std::move(uv)), ATTR_DOMAIN_CORNER, domain);
}
class PackIslandsFieldInput final : public GeometryFieldInput {
private:
const Field<bool> selection_field;
const Field<float3> uv_field;
const bool rotate;
const float margin;
public:
PackIslandsFieldInput(const Field<bool> selection_field,
const Field<float3> uv_field,
const bool rotate,
const float margin)
: GeometryFieldInput(CPPType::get<float3>(), "Pack UV Islands Field"),
selection_field(selection_field),
uv_field(uv_field),
rotate(rotate),
margin(margin)
{
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_uv_gvarray(
mesh_component, selection_field, uv_field, rotate, margin, domain);
}
return {};
}
};
static void node_geo_exec(GeoNodeExecParams params)
{
const Field<bool> selection_field = params.extract_input<Field<bool>>("Selection");
const Field<float3> uv_field = params.extract_input<Field<float3>>("UV");
const bool rotate = params.extract_input<bool>("Rotate");
const float margin = params.extract_input<float>("Margin");
params.set_output("UV",
Field<float3>(std::make_shared<PackIslandsFieldInput>(
selection_field, uv_field, rotate, margin)));
}
} // namespace blender::nodes::node_geo_uv_pack_islands_cc
void register_node_type_geo_uv_pack_islands()
{
namespace file_ns = blender::nodes::node_geo_uv_pack_islands_cc;
static bNodeType ntype;
geo_node_type_base(&ntype, GEO_NODE_UV_PACK_ISLANDS, "Pack UV Islands", NODE_CLASS_CONVERTER);
ntype.declare = file_ns::node_declare;
ntype.geometry_node_execute = file_ns::node_geo_exec;
nodeRegisterType(&ntype);
}
|
