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Diffstat (limited to 'intern/cycles/blender/blender_texture.cpp')
| -rw-r--r-- | intern/cycles/blender/blender_texture.cpp | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/intern/cycles/blender/blender_texture.cpp b/intern/cycles/blender/blender_texture.cpp new file mode 100644 index 00000000000..cb4dd1792d0 --- /dev/null +++ b/intern/cycles/blender/blender_texture.cpp @@ -0,0 +1,116 @@ +/* + * 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]; + 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); + } + /* 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 |