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/*
* Copyright 2011-2013 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/colorspace.h"
#include "render/mesh.h"
#include "render/object.h"
#include "blender/blender_sync.h"
#include "blender/blender_util.h"
CCL_NAMESPACE_BEGIN
static void sync_smoke_volume(Scene *scene, BL::Object &b_ob, Mesh *mesh, float frame)
{
BL::FluidDomainSettings b_domain = object_fluid_gas_domain_find(b_ob);
if (!b_domain) {
return;
}
ImageManager *image_manager = scene->image_manager;
AttributeStandard attributes[] = {ATTR_STD_VOLUME_DENSITY,
ATTR_STD_VOLUME_COLOR,
ATTR_STD_VOLUME_FLAME,
ATTR_STD_VOLUME_HEAT,
ATTR_STD_VOLUME_TEMPERATURE,
ATTR_STD_VOLUME_VELOCITY,
ATTR_STD_NONE};
for (int i = 0; attributes[i] != ATTR_STD_NONE; i++) {
AttributeStandard std = attributes[i];
if (!mesh->need_attribute(scene, std)) {
continue;
}
mesh->volume_isovalue = b_domain.clipping();
Attribute *attr = mesh->attributes.add(std);
VoxelAttribute *volume_data = attr->data_voxel();
ImageMetaData metadata;
ImageKey key;
key.filename = Attribute::standard_name(std);
key.builtin_data = b_ob.ptr.data;
volume_data->manager = image_manager;
volume_data->slot = image_manager->add_image(key, frame, metadata);
}
/* Create a matrix to transform from object space to mesh texture space.
* This does not work with deformations but that can probably only be done
* well with a volume grid mapping of coordinates. */
if (mesh->need_attribute(scene, ATTR_STD_GENERATED_TRANSFORM)) {
Attribute *attr = mesh->attributes.add(ATTR_STD_GENERATED_TRANSFORM);
Transform *tfm = attr->data_transform();
BL::Mesh b_mesh(b_ob.data());
float3 loc, size;
mesh_texture_space(b_mesh, loc, size);
*tfm = transform_translate(-loc) * transform_scale(size);
}
}
void BlenderSync::sync_volume(BL::Object &b_ob, Mesh *mesh, const vector<Shader *> &used_shaders)
{
bool old_has_voxel_attributes = mesh->has_voxel_attributes();
mesh->clear();
mesh->used_shaders = used_shaders;
/* Smoke domain. */
if (view_layer.use_volumes) {
sync_smoke_volume(scene, b_ob, mesh, b_scene.frame_current());
}
/* Tag update. */
bool rebuild = (old_has_voxel_attributes != mesh->has_voxel_attributes());
mesh->tag_update(scene, rebuild);
}
CCL_NAMESPACE_END
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