Blender V4.3
alembic_read.h
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1/* SPDX-FileCopyrightText: 2021-2022 Blender Foundation
2 *
3 * SPDX-License-Identifier: Apache-2.0 */
4
5#pragma once
6
7#ifdef WITH_ALEMBIC
8
9# include <Alembic/AbcCoreFactory/All.h>
10# include <Alembic/AbcGeom/All.h>
11
12# include "util/vector.h"
13
14CCL_NAMESPACE_BEGIN
15
16class AlembicProcedural;
17class AttributeRequestSet;
18class Progress;
19struct CachedData;
20
21/* Maps a FaceSet whose name matches that of a Shader to the index of said shader in the Geometry's
22 * used_shaders list. */
23struct FaceSetShaderIndexPair {
24 Alembic::AbcGeom::IFaceSet face_set;
25 int shader_index;
26};
27
28/* Data of an IPolyMeshSchema that we need to read. */
29struct PolyMeshSchemaData {
30 Alembic::AbcGeom::TimeSamplingPtr time_sampling;
31 size_t num_samples;
32 Alembic::AbcGeom::MeshTopologyVariance topology_variance;
33
34 Alembic::AbcGeom::IP3fArrayProperty positions;
35 Alembic::AbcGeom::IInt32ArrayProperty face_indices;
36 Alembic::AbcGeom::IInt32ArrayProperty face_counts;
37
38 Alembic::AbcGeom::IN3fGeomParam normals;
39
40 vector<FaceSetShaderIndexPair> shader_face_sets;
41
42 // Unsupported for now.
43 Alembic::AbcGeom::IV3fArrayProperty velocities;
44};
45
46void read_geometry_data(AlembicProcedural *proc,
47 CachedData &cached_data,
48 const PolyMeshSchemaData &data,
49 Progress &progress);
50
51/* Data of an ISubDSchema that we need to read. */
52struct SubDSchemaData {
53 Alembic::AbcGeom::TimeSamplingPtr time_sampling;
54 size_t num_samples;
55 Alembic::AbcGeom::MeshTopologyVariance topology_variance;
56
57 Alembic::AbcGeom::IInt32ArrayProperty face_counts;
58 Alembic::AbcGeom::IInt32ArrayProperty face_indices;
59 Alembic::AbcGeom::IP3fArrayProperty positions;
60
61 Alembic::AbcGeom::IInt32ArrayProperty crease_indices;
62 Alembic::AbcGeom::IInt32ArrayProperty crease_lengths;
63 Alembic::AbcGeom::IFloatArrayProperty crease_sharpnesses;
64
65 vector<FaceSetShaderIndexPair> shader_face_sets;
66
67 Alembic::AbcGeom::IInt32ArrayProperty corner_indices;
68 Alembic::AbcGeom::IFloatArrayProperty corner_sharpnesses;
69
70 // Those are unsupported for now.
71 Alembic::AbcGeom::IInt32Property face_varying_interpolate_boundary;
72 Alembic::AbcGeom::IInt32Property face_varying_propagate_corners;
73 Alembic::AbcGeom::IInt32Property interpolate_boundary;
74 Alembic::AbcGeom::IInt32ArrayProperty holes;
75 Alembic::AbcGeom::IStringProperty subdivision_scheme;
76 Alembic::AbcGeom::IV3fArrayProperty velocities;
77};
78
79void read_geometry_data(AlembicProcedural *proc,
80 CachedData &cached_data,
81 const SubDSchemaData &data,
82 Progress &progress);
83
84/* Data of a ICurvesSchema that we need to read. */
85struct CurvesSchemaData {
86 Alembic::AbcGeom::TimeSamplingPtr time_sampling;
87 size_t num_samples;
88 Alembic::AbcGeom::MeshTopologyVariance topology_variance;
89
90 Alembic::AbcGeom::IP3fArrayProperty positions;
91
92 Alembic::AbcGeom::IInt32ArrayProperty num_vertices;
93
94 float default_radius;
95 float radius_scale;
96
97 // Those are unsupported for now.
98 Alembic::AbcGeom::IV3fArrayProperty velocities;
99 // if this property is invalid then the weight for every point is 1
100 Alembic::AbcGeom::IFloatArrayProperty position_weights;
101 Alembic::AbcGeom::IN3fGeomParam normals;
102 Alembic::AbcGeom::IFloatGeomParam widths;
103 Alembic::AbcGeom::IUcharArrayProperty orders;
104 Alembic::AbcGeom::IFloatArrayProperty knots;
105
106 // TODO(@kevindietrich): type, basis, wrap
107};
108
109void read_geometry_data(AlembicProcedural *proc,
110 CachedData &cached_data,
111 const CurvesSchemaData &data,
112 Progress &progress);
113
114/* Data of a IPointsSchema that we need to read. */
115struct PointsSchemaData {
116 Alembic::AbcGeom::TimeSamplingPtr time_sampling;
117 size_t num_samples;
118
119 float default_radius;
120 float radius_scale;
121
122 Alembic::AbcGeom::IP3fArrayProperty positions;
123 Alembic::AbcGeom::IInt32ArrayProperty num_points;
124 Alembic::AbcGeom::IFloatGeomParam radiuses;
125 // Those are unsupported for now.
126 Alembic::AbcGeom::IV3fArrayProperty velocities;
127};
128
129void read_geometry_data(AlembicProcedural *proc,
130 CachedData &cached_data,
131 const PointsSchemaData &data,
132 Progress &progress);
133
134void read_attributes(AlembicProcedural *proc,
135 CachedData &cache,
136 const Alembic::AbcGeom::ICompoundProperty &arb_geom_params,
137 const Alembic::AbcGeom::IV2fGeomParam &default_uvs_param,
138 const AttributeRequestSet &requested_attributes,
139 Progress &progress);
140
141CCL_NAMESPACE_END
142
143#endif
vector
in reality light always falls off quadratically Particle Retrieve the data of the particle that spawned the object for example to give variation to multiple instances of an object Point Retrieve information about points in a point cloud Retrieve the edges of an object as it appears to Cycles topology will always appear triangulated Convert a blackbody temperature to an RGB value Normal Generate a perturbed normal from an RGB normal map image Typically used for faking highly detailed surfaces Generate an OSL shader from a file or text data block Image Sample an image file as a texture Gabor Generate Gabor noise Gradient Generate interpolated color and intensity values based on the input vector Magic Generate a psychedelic color texture Voronoi Generate Worley noise based on the distance to random points Typically used to generate textures such as or biological cells Brick Generate a procedural texture producing bricks Texture Retrieve multiple types of texture coordinates nTypically used as inputs for texture nodes Vector Convert a vector
Definition NOD_static_types.h:111
data
data
Definition bmesh_operator_api_inline.hh:159
CCL_NAMESPACE_END
#define CCL_NAMESPACE_END
Definition device/cuda/compat.h:10
normals
static float normals[][3]
Definition geom_arrow_gizmo.cc:29
CCL_NAMESPACE_BEGIN
Definition python.cpp:44
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