Sergey Sharybin
74c7707e8c
This way we avoid passing structures which could be up to few hundred bytes by value to the utility functions. Ideally we'll also have to add `const` qualifier in majority of the calls, but C++ RNA does not allow us to do that because it does not know if some function modifies contents or not.
60 lines
1.8 KiB
C++
60 lines
1.8 KiB
C++
/*
|
|
* 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. */
|
|
|
|
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);
|
|
}
|
|
|
|
} /* namespace */
|
|
|
|
void point_density_texture_space(BL::Scene& b_scene,
|
|
BL::ShaderNodeTexPointDensity& b_point_density_node,
|
|
int settings,
|
|
float3& loc,
|
|
float3& size)
|
|
{
|
|
BL::Object b_ob(b_point_density_node.object());
|
|
if(!b_ob) {
|
|
loc = make_float3(0.0f, 0.0f, 0.0f);
|
|
size = make_float3(0.0f, 0.0f, 0.0f);
|
|
return;
|
|
}
|
|
float3 min, max;
|
|
b_point_density_node.calc_point_density_minmax(b_scene,
|
|
settings,
|
|
&min[0],
|
|
&max[0]);
|
|
loc = (min + max) * 0.5f;
|
|
size = (max - min) * 0.5f;
|
|
density_texture_space_invert(loc, size);
|
|
}
|
|
|
|
CCL_NAMESPACE_END
|