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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.
*/
#include "usd_writer_transform.h"
#include "usd_hierarchy_iterator.h"
#include <pxr/base/gf/matrix4f.h>
#include <pxr/usd/usdGeom/xform.h>
#include "BKE_object.h"
#include "BLI_math_matrix.h"
#include "DNA_layer_types.h"
namespace USD {
USDTransformWriter::USDTransformWriter(const USDExporterContext &ctx) : USDAbstractWriter(ctx)
{
}
void USDTransformWriter::do_write(HierarchyContext &context)
{
float parent_relative_matrix[4][4]; // The object matrix relative to the parent.
mul_m4_m4m4(parent_relative_matrix, context.parent_matrix_inv_world, context.matrix_world);
// Write the transform relative to the parent.
pxr::UsdGeomXform xform = pxr::UsdGeomXform::Define(usd_export_context_.stage,
usd_export_context_.usd_path);
if (!xformOp_) {
xformOp_ = xform.AddTransformOp();
}
xformOp_.Set(pxr::GfMatrix4d(parent_relative_matrix), get_export_time_code());
}
bool USDTransformWriter::check_is_animated(const HierarchyContext &context) const
{
if (context.duplicator != nullptr) {
/* This object is being duplicated, so could be emitted by a particle system and thus
* influenced by forces. TODO(Sybren): Make this more strict. Probably better to get from the
* depsgraph whether this object instance has a time source. */
return true;
}
return BKE_object_moves_in_time(context.object, context.animation_check_include_parent);
}
} // namespace USD
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