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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.
*
* Adapted from the Blender Alembic importer implementation.
*
* Modifications Copyright (C) 2021 Tangent Animation.
* All rights reserved.
*/
#pragma once
#include "usd.h"
#include "usd_reader_prim.h"
namespace blender::io::usd {
class USDXformReader : public USDPrimReader {
private:
bool use_parent_xform_;
/* Indicates if the created object is the root of a
* transform hierarchy. */
bool is_root_xform_;
public:
USDXformReader(const pxr::UsdPrim &prim,
const USDImportParams &import_params,
const ImportSettings &settings)
: USDPrimReader(prim, import_params, settings),
use_parent_xform_(false),
is_root_xform_(is_root_xform_prim())
{
}
void create_object(Main *bmain, double motionSampleTime) override;
void read_object_data(Main *bmain, double motionSampleTime) override;
void read_matrix(float r_mat[4][4], const float time, const float scale, bool *r_is_constant);
bool use_parent_xform() const
{
return use_parent_xform_;
}
void set_use_parent_xform(bool flag)
{
use_parent_xform_ = flag;
is_root_xform_ = is_root_xform_prim();
}
bool prim_has_xform_ops() const;
protected:
/* Returns true if the contained USD prim is the root of a transform hierarchy. */
bool is_root_xform_prim() const;
};
} // namespace blender::io::usd
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