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/*
* Copyright 2011-2020 Blender Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "render/image_vdb.h"
#ifdef WITH_OPENVDB
# include <openvdb/openvdb.h>
# include <openvdb/tools/Dense.h>
#endif
CCL_NAMESPACE_BEGIN
VDBImageLoader::VDBImageLoader(const string &grid_name) : grid_name(grid_name)
{
}
VDBImageLoader::~VDBImageLoader()
{
}
bool VDBImageLoader::load_metadata(ImageMetaData &metadata)
{
#ifdef WITH_OPENVDB
if (!grid) {
return false;
}
bbox = grid->evalActiveVoxelBoundingBox();
if (bbox.empty()) {
return false;
}
/* Set dimensions. */
openvdb::Coord dim = bbox.dim();
openvdb::Coord min = bbox.min();
metadata.width = dim.x();
metadata.height = dim.y();
metadata.depth = dim.z();
/* Set data type. */
if (grid->isType<openvdb::FloatGrid>()) {
metadata.channels = 1;
}
else if (grid->isType<openvdb::Vec3fGrid>()) {
metadata.channels = 3;
}
else if (grid->isType<openvdb::BoolGrid>()) {
metadata.channels = 1;
}
else if (grid->isType<openvdb::DoubleGrid>()) {
metadata.channels = 1;
}
else if (grid->isType<openvdb::Int32Grid>()) {
metadata.channels = 1;
}
else if (grid->isType<openvdb::Int64Grid>()) {
metadata.channels = 1;
}
else if (grid->isType<openvdb::Vec3IGrid>()) {
metadata.channels = 3;
}
else if (grid->isType<openvdb::Vec3dGrid>()) {
metadata.channels = 3;
}
else if (grid->isType<openvdb::MaskGrid>()) {
metadata.channels = 1;
}
else {
return false;
}
if (metadata.channels == 1) {
metadata.type = IMAGE_DATA_TYPE_FLOAT;
}
else {
metadata.type = IMAGE_DATA_TYPE_FLOAT4;
}
/* Set transform from object space to voxel index. */
openvdb::math::Mat4f grid_matrix = grid->transform().baseMap()->getAffineMap()->getMat4();
Transform index_to_object;
for (int col = 0; col < 4; col++) {
for (int row = 0; row < 3; row++) {
index_to_object[row][col] = (float)grid_matrix[col][row];
}
}
Transform texture_to_index = transform_translate(min.x(), min.y(), min.z()) *
transform_scale(dim.x(), dim.y(), dim.z());
metadata.transform_3d = transform_inverse(index_to_object * texture_to_index);
metadata.use_transform_3d = true;
return true;
#else
(void)metadata;
return false;
#endif
}
bool VDBImageLoader::load_pixels(const ImageMetaData &, void *pixels, const size_t, const bool)
{
#ifdef WITH_OPENVDB
if (grid->isType<openvdb::FloatGrid>()) {
openvdb::tools::Dense<float, openvdb::tools::LayoutXYZ> dense(bbox, (float *)pixels);
openvdb::tools::copyToDense(*openvdb::gridConstPtrCast<openvdb::FloatGrid>(grid), dense);
}
else if (grid->isType<openvdb::Vec3fGrid>()) {
openvdb::tools::Dense<openvdb::Vec3f, openvdb::tools::LayoutXYZ> dense(
bbox, (openvdb::Vec3f *)pixels);
openvdb::tools::copyToDense(*openvdb::gridConstPtrCast<openvdb::Vec3fGrid>(grid), dense);
}
else if (grid->isType<openvdb::BoolGrid>()) {
openvdb::tools::Dense<float, openvdb::tools::LayoutXYZ> dense(bbox, (float *)pixels);
openvdb::tools::copyToDense(*openvdb::gridConstPtrCast<openvdb::BoolGrid>(grid), dense);
}
else if (grid->isType<openvdb::DoubleGrid>()) {
openvdb::tools::Dense<float, openvdb::tools::LayoutXYZ> dense(bbox, (float *)pixels);
openvdb::tools::copyToDense(*openvdb::gridConstPtrCast<openvdb::DoubleGrid>(grid), dense);
}
else if (grid->isType<openvdb::Int32Grid>()) {
openvdb::tools::Dense<float, openvdb::tools::LayoutXYZ> dense(bbox, (float *)pixels);
openvdb::tools::copyToDense(*openvdb::gridConstPtrCast<openvdb::Int32Grid>(grid), dense);
}
else if (grid->isType<openvdb::Int64Grid>()) {
openvdb::tools::Dense<float, openvdb::tools::LayoutXYZ> dense(bbox, (float *)pixels);
openvdb::tools::copyToDense(*openvdb::gridConstPtrCast<openvdb::Int64Grid>(grid), dense);
}
else if (grid->isType<openvdb::Vec3IGrid>()) {
openvdb::tools::Dense<openvdb::Vec3f, openvdb::tools::LayoutXYZ> dense(
bbox, (openvdb::Vec3f *)pixels);
openvdb::tools::copyToDense(*openvdb::gridConstPtrCast<openvdb::Vec3IGrid>(grid), dense);
}
else if (grid->isType<openvdb::Vec3dGrid>()) {
openvdb::tools::Dense<openvdb::Vec3f, openvdb::tools::LayoutXYZ> dense(
bbox, (openvdb::Vec3f *)pixels);
openvdb::tools::copyToDense(*openvdb::gridConstPtrCast<openvdb::Vec3dGrid>(grid), dense);
}
else if (grid->isType<openvdb::MaskGrid>()) {
openvdb::tools::Dense<float, openvdb::tools::LayoutXYZ> dense(bbox, (float *)pixels);
openvdb::tools::copyToDense(*openvdb::gridConstPtrCast<openvdb::MaskGrid>(grid), dense);
}
return true;
#else
(void)pixels;
return false;
#endif
}
string VDBImageLoader::name() const
{
return grid_name;
}
bool VDBImageLoader::equals(const ImageLoader &other) const
{
#ifdef WITH_OPENVDB
const VDBImageLoader &other_loader = (const VDBImageLoader &)other;
return grid == other_loader.grid;
#else
(void)other;
return true;
#endif
}
void VDBImageLoader::cleanup()
{
#ifdef WITH_OPENVDB
/* Free OpenVDB grid memory as soon as we can. */
grid.reset();
#endif
}
CCL_NAMESPACE_END
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