Sybren A. Stüvel
0c38436227
Alembic is not a single file format, it can be stored in two different ways: Ogawa and HDF5. Ogawa replaced HDF5 and is smaller and much faster (4-25x) to read ([source](http://exocortex.com/blog/alembic_is_about_to_get_really_fast)). As long as Blender has had Alembic support, it has never supported the HDF5 format in any release. There is a build option `WITH_ALEMBIC_HDF5` that can be used to enable HDF5 support in your own build. This commit removes this build option and the code that it manages. In the years that I have been maintainer of Blender's Alembic code, I only remember getting a request to support HDF5 once, and that was to support very old software that has likely since then been updated to support Ogawa. Ubuntu and Fedora also seem to bundle Blender without HDF5 support. This decision was discussed on [DevTalk](https://devtalk.blender.org/t/alembic-hdf5-support-completely-remove) where someone also mentioned that there is a tool available that can convert HDF5 files to the Ogawa format.
128 lines
3.3 KiB
C++
128 lines
3.3 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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/** \file
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* \ingroup balembic
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*/
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#ifndef __ABC_EXPORTER_H__
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#define __ABC_EXPORTER_H__
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#include <Alembic/Abc/All.h>
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#include <map>
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#include <set>
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#include <vector>
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#include "abc_util.h"
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class AbcObjectWriter;
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class AbcTransformWriter;
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class ArchiveWriter;
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struct Base;
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struct Depsgraph;
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struct Main;
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struct Object;
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struct Scene;
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struct ViewLayer;
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struct ExportSettings {
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ExportSettings();
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Scene *scene;
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/** Scene layer to export; all its objects will be exported, unless selected_only=true. */
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ViewLayer *view_layer;
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Depsgraph *depsgraph;
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SimpleLogger logger;
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bool selected_only;
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bool visible_objects_only;
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bool renderable_only;
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double frame_start, frame_end;
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double frame_samples_xform;
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double frame_samples_shape;
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double shutter_open;
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double shutter_close;
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float global_scale;
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bool flatten_hierarchy;
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bool export_normals;
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bool export_uvs;
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bool export_vcols;
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bool export_face_sets;
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bool export_vweigths;
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bool export_hair;
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bool export_particles;
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bool apply_subdiv;
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bool curves_as_mesh;
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bool use_subdiv_schema;
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bool export_child_hairs;
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bool pack_uv;
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bool triangulate;
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int quad_method;
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int ngon_method;
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};
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class AbcExporter {
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Main *m_bmain;
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ExportSettings &m_settings;
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const char *m_filename;
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unsigned int m_trans_sampling_index, m_shape_sampling_index;
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ArchiveWriter *m_writer;
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/* mapping from name to transform writer */
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typedef std::map<std::string, AbcTransformWriter *> m_xforms_type;
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m_xforms_type m_xforms;
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std::vector<AbcObjectWriter *> m_shapes;
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public:
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AbcExporter(Main *bmain, const char *filename, ExportSettings &settings);
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~AbcExporter();
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void operator()(short *do_update, float *progress, bool *was_canceled);
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protected:
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void getShutterSamples(unsigned int nr_of_samples,
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bool time_relative,
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std::vector<double> &samples);
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void getFrameSet(unsigned int nr_of_samples, std::set<double> &frames);
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private:
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Alembic::Abc::TimeSamplingPtr createTimeSampling(double step);
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void createTransformWritersHierarchy();
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AbcTransformWriter *createTransformWriter(Object *ob, Object *parent, Object *dupliObParent);
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void exploreTransform(Base *base, Object *object, Object *parent, Object *dupliObParent);
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void exploreObject(Base *base, Object *object, Object *dupliObParent);
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void createShapeWriters();
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void createShapeWriter(Object *ob, Object *dupliObParent);
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void createParticleSystemsWriters(Object *ob, AbcTransformWriter *xform);
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AbcTransformWriter *getXForm(const std::string &name);
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void setCurrentFrame(Main *bmain, double t);
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};
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#endif /* __ABC_EXPORTER_H__ */
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