Kévin Dietrich
3385c04598
This adds support for importing UV sets which are defined per vertex, instead of per face corners. Such UV sets can be generated when the mesh is split according to UV islands, or when there is only one UV island, in which cases only a single UV value can be stored per vertex since vertices will never be on a seam. Reviewed By: sybren Differential Revision: https://developer.blender.org/D11584
136 lines
3.9 KiB
C++
136 lines
3.9 KiB
C++
/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2016 Kévin Dietrich.
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* All rights reserved.
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*/
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#pragma once
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/** \file
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* \ingroup balembic
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*/
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#include <Alembic/Abc/All.h>
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#include <Alembic/AbcGeom/All.h>
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#include <map>
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struct CustomData;
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struct MLoop;
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struct MLoopUV;
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struct MPoly;
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struct MVert;
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struct Mesh;
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using Alembic::Abc::ICompoundProperty;
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using Alembic::Abc::OCompoundProperty;
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namespace blender::io::alembic {
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struct UVSample {
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std::vector<Imath::V2f> uvs;
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std::vector<uint32_t> indices;
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};
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struct CDStreamConfig {
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MLoop *mloop;
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int totloop;
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MPoly *mpoly;
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int totpoly;
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MVert *mvert;
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int totvert;
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MLoopUV *mloopuv;
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CustomData *loopdata;
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bool pack_uvs;
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/* TODO(kevin): might need a better way to handle adding and/or updating
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* custom data such that it updates the custom data holder and its pointers properly. */
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Mesh *mesh;
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void *(*add_customdata_cb)(Mesh *mesh, const char *name, int data_type);
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float weight;
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float time;
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bool use_vertex_interpolation;
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Alembic::AbcGeom::index_t index;
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Alembic::AbcGeom::index_t ceil_index;
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const char **modifier_error_message;
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/* Alembic needs Blender to keep references to C++ objects (the destructors finalize the writing
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* to ABC). The following fields are all used to keep these references. */
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/* Mapping from UV map name to its ABC property, for the 2nd and subsequent UV maps; the primary
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* UV map is kept alive by the Alembic mesh sample itself. */
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std::map<std::string, Alembic::AbcGeom::OV2fGeomParam> abc_uv_maps;
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/* OCRO coordinates, aka Generated Coordinates. */
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Alembic::AbcGeom::OV3fGeomParam abc_ocro;
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CDStreamConfig()
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: mloop(NULL),
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totloop(0),
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mpoly(NULL),
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totpoly(0),
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totvert(0),
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pack_uvs(false),
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mesh(NULL),
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add_customdata_cb(NULL),
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weight(0.0f),
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time(0.0f),
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index(0),
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ceil_index(0),
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modifier_error_message(NULL)
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{
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}
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};
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/* Get the UVs for the main UV property on a OSchema.
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* Returns the name of the UV layer.
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*
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* For now the active layer is used, maybe needs a better way to choose this. */
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const char *get_uv_sample(UVSample &sample, const CDStreamConfig &config, CustomData *data);
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void write_generated_coordinates(const OCompoundProperty &prop, CDStreamConfig &config);
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void read_generated_coordinates(const ICompoundProperty &prop,
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const CDStreamConfig &config,
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const Alembic::Abc::ISampleSelector &iss);
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void write_custom_data(const OCompoundProperty &prop,
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CDStreamConfig &config,
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CustomData *data,
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int data_type);
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void read_custom_data(const std::string &iobject_full_name,
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const ICompoundProperty &prop,
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const CDStreamConfig &config,
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const Alembic::Abc::ISampleSelector &iss);
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typedef enum {
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ABC_UV_SCOPE_NONE,
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ABC_UV_SCOPE_LOOP,
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ABC_UV_SCOPE_VERTEX,
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} AbcUvScope;
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AbcUvScope get_uv_scope(const Alembic::AbcGeom::GeometryScope scope,
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const CDStreamConfig &config,
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const Alembic::AbcGeom::UInt32ArraySamplePtr &indices);
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} // namespace blender::io::alembic
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