ea54cbe1b4
This is an initial implementation of a USD importer. This work is comprised of Tangent Animation's open source USD importer, combined with features @makowalski had implemented. The design is very similar to the approach taken in the Alembic importer. The core functionality resides in a collection of "reader" classes, each of which is responsible for converting an instance of a USD prim to the corresponding Blender Object representation. The flow of control for the conversion can be followed in the `import_startjob()` and `import_endjob()` functions in `usd_capi.cc`. The `USDStageReader` class is responsible for traversing the USD stage and instantiating the appropriate readers. Reviewed By: sybren, HooglyBoogly Differential Revision: https://developer.blender.org/D10700
53 lines
1.6 KiB
C++
53 lines
1.6 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) 2021 Tangent Animation.
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* All rights reserved.
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*/
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#pragma once
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#include "usd.h"
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#include "usd_reader_xform.h"
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struct Mesh;
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namespace blender::io::usd {
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class USDGeomReader : public USDXformReader {
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public:
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USDGeomReader(const pxr::UsdPrim &prim,
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const USDImportParams &import_params,
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const ImportSettings &settings)
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: USDXformReader(prim, import_params, settings)
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{
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}
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virtual Mesh *read_mesh(struct Mesh *existing_mesh,
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double motionSampleTime,
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int read_flag,
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const char **err_str) = 0;
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virtual bool topology_changed(Mesh * /* existing_mesh */, double /* motionSampleTime */)
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{
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return true;
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}
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void add_cache_modifier();
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void add_subdiv_modifier();
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};
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} // namespace blender::io::usd
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