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
81 lines
1.9 KiB
C++
81 lines
1.9 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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* Adapted from the Blender Alembic importer implementation.
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*
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* Modifications Copyright (C) 2021 Tangent Animation.
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* All rights reserved.
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*/
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#include "usd_reader_prim.h"
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#include "BLI_utildefines.h"
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namespace blender::io::usd {
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USDPrimReader::USDPrimReader(const pxr::UsdPrim &prim,
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const USDImportParams &import_params,
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const ImportSettings &settings)
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: name_(prim.GetName().GetString()),
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prim_path_(prim.GetPrimPath().GetString()),
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object_(nullptr),
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prim_(prim),
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import_params_(import_params),
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parent_reader_(nullptr),
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settings_(&settings),
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refcount_(0)
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{
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}
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USDPrimReader::~USDPrimReader() = default;
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const pxr::UsdPrim &USDPrimReader::prim() const
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{
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return prim_;
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}
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Object *USDPrimReader::object() const
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{
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return object_;
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}
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void USDPrimReader::object(Object *ob)
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{
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object_ = ob;
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}
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bool USDPrimReader::valid() const
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{
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return prim_.IsValid();
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}
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int USDPrimReader::refcount() const
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{
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return refcount_;
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}
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void USDPrimReader::incref()
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{
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refcount_++;
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}
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void USDPrimReader::decref()
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{
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refcount_--;
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BLI_assert(refcount_ >= 0);
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}
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} // namespace blender::io::usd
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