2015-07-18 22:36:09 +02:00
|
|
|
/*
|
|
|
|
* Copyright 2011-2015 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 "blender_texture.h"
|
|
|
|
|
|
|
|
CCL_NAMESPACE_BEGIN
|
|
|
|
|
|
|
|
namespace {
|
|
|
|
|
|
|
|
/* Point density helpers. */
|
|
|
|
|
|
|
|
static void density_texture_space_invert(float3& loc,
|
|
|
|
float3& size)
|
|
|
|
{
|
|
|
|
if(size.x != 0.0f) size.x = 0.5f/size.x;
|
|
|
|
if(size.y != 0.0f) size.y = 0.5f/size.y;
|
|
|
|
if(size.z != 0.0f) size.z = 0.5f/size.z;
|
|
|
|
|
|
|
|
loc = loc*size - make_float3(0.5f, 0.5f, 0.5f);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void density_object_texture_space(BL::Object b_ob,
|
|
|
|
float radius,
|
|
|
|
float3& loc,
|
|
|
|
float3& size)
|
|
|
|
{
|
|
|
|
if(b_ob.type() == BL::Object::type_MESH) {
|
|
|
|
BL::Mesh b_mesh(b_ob.data());
|
|
|
|
loc = get_float3(b_mesh.texspace_location());
|
|
|
|
size = get_float3(b_mesh.texspace_size());
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
/* TODO(sergey): Not supported currently. */
|
|
|
|
}
|
|
|
|
/* Adjust texture space to include density points on the boundaries. */
|
|
|
|
size = size + make_float3(radius, radius, radius);
|
|
|
|
density_texture_space_invert(loc, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void density_particle_system_texture_space(
|
|
|
|
BL::Object b_ob,
|
|
|
|
BL::ParticleSystem b_particle_system,
|
|
|
|
float radius,
|
|
|
|
float3& loc,
|
|
|
|
float3& size)
|
|
|
|
{
|
|
|
|
if(b_particle_system.settings().type() == BL::ParticleSettings::type_HAIR) {
|
|
|
|
/* TODO(sergey): Not supported currently. */
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
Transform tfm = get_transform(b_ob.matrix_world());
|
|
|
|
Transform itfm = transform_inverse(tfm);
|
|
|
|
float3 min = make_float3(FLT_MAX, FLT_MAX, FLT_MAX),
|
|
|
|
max = make_float3(-FLT_MAX, -FLT_MAX, -FLT_MAX);
|
|
|
|
float3 particle_size = make_float3(radius, radius, radius);
|
|
|
|
for(int i = 0; i < b_particle_system.particles.length(); ++i) {
|
|
|
|
BL::Particle particle = b_particle_system.particles[i];
|
2015-10-08 19:08:28 +05:00
|
|
|
if(particle.alive_state() == BL::Particle::alive_state_ALIVE) {
|
2015-10-01 19:34:37 +05:00
|
|
|
float3 location = get_float3(particle.location());
|
|
|
|
location = transform_point(&itfm, location);
|
|
|
|
min = ccl::min(min, location - particle_size);
|
|
|
|
max = ccl::max(max, location + particle_size);
|
|
|
|
}
|
2015-07-18 22:36:09 +02:00
|
|
|
}
|
|
|
|
/* Calculate texture space from the particle bounds. */
|
|
|
|
loc = (min + max) * 0.5f;
|
|
|
|
size = (max - min) * 0.5f;
|
|
|
|
density_texture_space_invert(loc, size);
|
|
|
|
}
|
|
|
|
|
|
|
|
} /* namespace */
|
|
|
|
|
|
|
|
void point_density_texture_space(BL::ShaderNodeTexPointDensity b_point_density_node,
|
|
|
|
float3& loc,
|
|
|
|
float3& size)
|
|
|
|
{
|
|
|
|
/* Fallback values. */
|
|
|
|
loc = make_float3(0.0f, 0.0f, 0.0f);
|
|
|
|
size = make_float3(0.0f, 0.0f, 0.0f);
|
|
|
|
BL::Object b_ob(b_point_density_node.object());
|
|
|
|
if(!b_ob) {
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if(b_point_density_node.point_source() ==
|
|
|
|
BL::ShaderNodeTexPointDensity::point_source_PARTICLE_SYSTEM)
|
|
|
|
{
|
|
|
|
BL::ParticleSystem b_particle_system(
|
|
|
|
b_point_density_node.particle_system());
|
|
|
|
if(b_particle_system) {
|
|
|
|
density_particle_system_texture_space(b_ob,
|
|
|
|
b_particle_system,
|
|
|
|
b_point_density_node.radius(),
|
|
|
|
loc,
|
|
|
|
size);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else {
|
|
|
|
density_object_texture_space(b_ob,
|
|
|
|
b_point_density_node.radius(),
|
|
|
|
loc,
|
|
|
|
size);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
CCL_NAMESPACE_END
|