Sybren A. Stüvel
3ce9bcee70
It's now possible to export curves and NURBS as mesh data to Alembic. This allows artists to do any crazy thing on curves and export the visual result to Alembic for interoperability with other software (or caching for later use, etc.). It's an often-requested feature. This works around T60503 and the fixes export part of T51311. Note that exporting zero-width curves is currently not supported, as exporting a faceless mesh (e.g. just edges and vertices) is not supported by the mesh writer at all. To test, create a curve with thickness (for example extruded), export to Alembic and check the 'Curves to Mesh' checkbox in the export options. Reviewers: sergey Differential Revision: https://developer.blender.org/D4213
88 lines
2.8 KiB
C++
88 lines
2.8 KiB
C++
/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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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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* ***** END GPL LICENSE BLOCK *****
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*
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*/
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#ifndef __ABC_CURVES_H__
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#define __ABC_CURVES_H__
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#include "abc_object.h"
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#include "abc_mesh.h"
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struct Curve;
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/* ************************************************************************** */
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class AbcCurveWriter : public AbcObjectWriter {
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Alembic::AbcGeom::OCurvesSchema m_schema;
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Alembic::AbcGeom::OCurvesSchema::Sample m_sample;
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public:
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AbcCurveWriter(Object *ob,
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AbcTransformWriter *parent,
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uint32_t time_sampling,
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ExportSettings &settings);
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protected:
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void do_write();
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};
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class AbcCurveMeshWriter : public AbcGenericMeshWriter {
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public:
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AbcCurveMeshWriter(Object *ob,
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AbcTransformWriter *parent,
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uint32_t time_sampling,
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ExportSettings &settings);
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protected:
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Mesh *getEvaluatedMesh(Scene *scene_eval, Object *ob_eval, bool &r_needsfree);
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};
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/* ************************************************************************** */
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class AbcCurveReader : public AbcObjectReader {
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Alembic::AbcGeom::ICurvesSchema m_curves_schema;
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public:
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AbcCurveReader(const Alembic::Abc::IObject &object, ImportSettings &settings);
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bool valid() const;
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bool accepts_object_type(const Alembic::AbcCoreAbstract::ObjectHeader &alembic_header,
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const Object *const ob,
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const char **err_str) const;
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void readObjectData(Main *bmain, const Alembic::Abc::ISampleSelector &sample_sel);
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struct Mesh *read_mesh(struct Mesh *existing_mesh,
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const Alembic::Abc::ISampleSelector &sample_sel,
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int read_flag,
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const char **err_str);
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void read_curve_sample(Curve *cu,
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const Alembic::AbcGeom::ICurvesSchema &schema,
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const Alembic::Abc::ISampleSelector &sample_selector);
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};
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/* ************************************************************************** */
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#endif /* __ABC_CURVES_H__ */
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