diff options
author | Michael Kowalski <makowalski> | 2021-08-03 12:55:53 +0300 |
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committer | Sybren A. Stüvel <sybren@blender.org> | 2021-08-03 13:33:36 +0300 |
commit | ea54cbe1b42efb3107285c89685f555c06997062 (patch) | |
tree | bfaf0cb2315172e330c982ae081a4299cc3dc82b /source/blender/io/usd/intern/usd_reader_geom.h | |
parent | 28b9dd7b1f0a8d4ae56eafca188796936a6e3723 (diff) |
USD: add USD importer
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
Diffstat (limited to 'source/blender/io/usd/intern/usd_reader_geom.h')
-rw-r--r-- | source/blender/io/usd/intern/usd_reader_geom.h | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/source/blender/io/usd/intern/usd_reader_geom.h b/source/blender/io/usd/intern/usd_reader_geom.h new file mode 100644 index 00000000000..99e22248f2b --- /dev/null +++ b/source/blender/io/usd/intern/usd_reader_geom.h @@ -0,0 +1,52 @@ +/* + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version 2 + * of the License, or (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software Foundation, + * Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. + * + * The Original Code is Copyright (C) 2021 Tangent Animation. + * All rights reserved. + */ +#pragma once + +#include "usd.h" +#include "usd_reader_xform.h" + +struct Mesh; + +namespace blender::io::usd { + +class USDGeomReader : public USDXformReader { + + public: + USDGeomReader(const pxr::UsdPrim &prim, + const USDImportParams &import_params, + const ImportSettings &settings) + : USDXformReader(prim, import_params, settings) + { + } + + virtual Mesh *read_mesh(struct Mesh *existing_mesh, + double motionSampleTime, + int read_flag, + const char **err_str) = 0; + + virtual bool topology_changed(Mesh * /* existing_mesh */, double /* motionSampleTime */) + { + return true; + } + + void add_cache_modifier(); + void add_subdiv_modifier(); +}; + +} // namespace blender::io::usd |