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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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) 2015 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Kevin Dietrich
*
* ***** END GPL LICENSE BLOCK *****
*/
#ifndef __OPENVDB_DENSE_CONVERT_H__
#define __OPENVDB_DENSE_CONVERT_H__
#include "openvdb_reader.h"
#include "openvdb_writer.h"
#include <openvdb/tools/Clip.h>
#include <openvdb/tools/Dense.h>
#include <cstdio>
#define TOLERANCE 1e-3f
namespace internal {
openvdb::Mat4R convertMatrix(const float mat[4][4]);
template <typename GridType, typename T>
GridType *OpenVDB_export_grid(
OpenVDBWriter *writer,
const openvdb::Name &name,
const T *data,
const int res[3],
float fluid_mat[4][4],
const openvdb::FloatGrid *mask)
{
using namespace openvdb;
math::CoordBBox bbox(Coord(0), Coord(res[0] - 1, res[1] - 1, res[2] - 1));
Mat4R mat = convertMatrix(fluid_mat);
math::Transform::Ptr transform = math::Transform::createLinearTransform(mat);
typename GridType::Ptr grid = GridType::create(T(0));
tools::Dense<const T, openvdb::tools::LayoutXYZ> dense_grid(bbox, data);
tools::copyFromDense(dense_grid, grid->tree(), (T)TOLERANCE);
grid->setTransform(transform);
if (mask) {
grid = tools::clip(*grid, *mask);
}
grid->setName(name);
grid->setIsInWorldSpace(false);
grid->setVectorType(openvdb::VEC_INVARIANT);
writer->insert(grid);
return grid.get();
}
template <typename GridType, typename T>
void OpenVDB_import_grid(
OpenVDBReader *reader,
const openvdb::Name &name,
T **data,
const int res[3])
{
using namespace openvdb;
if (!reader->hasGrid(name)) {
std::fprintf(stderr, "OpenVDB grid %s not found in file!\n", name.c_str());
memset(*data, 0, sizeof(T) * res[0] * res[1] * res[2]);
return;
}
typename GridType::Ptr grid = gridPtrCast<GridType>(reader->getGrid(name));
typename GridType::ConstAccessor acc = grid->getConstAccessor();
math::Coord xyz;
int &x = xyz[0], &y = xyz[1], &z = xyz[2];
size_t index = 0;
for (z = 0; z < res[2]; ++z) {
for (y = 0; y < res[1]; ++y) {
for (x = 0; x < res[0]; ++x, ++index) {
(*data)[index] = acc.getValue(xyz);
}
}
}
}
openvdb::GridBase *OpenVDB_export_vector_grid(
OpenVDBWriter *writer,
const openvdb::Name &name,
const float *data_x, const float *data_y, const float *data_z,
const int res[3],
float fluid_mat[4][4],
openvdb::VecType vec_type,
const bool is_color,
const openvdb::FloatGrid *mask);
void OpenVDB_import_grid_vector(
OpenVDBReader *reader,
const openvdb::Name &name,
float **data_x, float **data_y, float **data_z,
const int res[3]);
} /* namespace internal */
#endif /* __OPENVDB_DENSE_CONVERT_H__ */
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