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/*
* 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) 2019 Blender Foundation.
* All rights reserved.
*/
#pragma once
#include "IO_abstract_hierarchy_iterator.h"
#include "usd_exporter_context.h"
#include <pxr/usd/sdf/path.h>
#include <pxr/usd/usd/stage.h>
#include <pxr/usd/usdShade/material.h>
#include <pxr/usd/usdUtils/sparseValueWriter.h>
#include <vector>
#include "DEG_depsgraph_query.h"
#include "DNA_material_types.h"
struct Material;
struct Object;
namespace blender {
namespace io {
namespace usd {
using blender::io::AbstractHierarchyWriter;
using blender::io::HierarchyContext;
class USDAbstractWriter : public AbstractHierarchyWriter {
protected:
const USDExporterContext usd_export_context_;
pxr::UsdUtilsSparseValueWriter usd_value_writer_;
bool frame_has_been_written_;
bool is_animated_;
public:
USDAbstractWriter(const USDExporterContext &usd_export_context);
virtual ~USDAbstractWriter();
virtual void write(HierarchyContext &context) override;
/* Returns true if the data to be written is actually supported. This would, for example, allow a
* hypothetical camera writer accept a perspective camera but reject an orthogonal one.
*
* Returning false from a transform writer will prevent the object and all its descendants from
* being exported. Returning false from a data writer (object data, hair, or particles) will
* only prevent that data from being written (and thus cause the object to be exported as an
* Empty). */
virtual bool is_supported(const HierarchyContext *context) const;
const pxr::SdfPath &usd_path() const;
protected:
virtual void do_write(HierarchyContext &context) = 0;
pxr::UsdTimeCode get_export_time_code() const;
pxr::UsdShadeMaterial ensure_usd_material(Material *material);
};
} // namespace usd
} // namespace io
} // namespace blender
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