58 lines
1.6 KiB
C++
58 lines
1.6 KiB
C++
/*
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* Copyright 2011-2015 Blender Foundation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "blender/blender_texture.h"
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CCL_NAMESPACE_BEGIN
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namespace {
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/* Point density helpers. */
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void density_texture_space_invert(float3 &loc, float3 &size)
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{
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if (size.x != 0.0f)
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size.x = 0.5f / size.x;
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if (size.y != 0.0f)
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size.y = 0.5f / size.y;
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if (size.z != 0.0f)
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size.z = 0.5f / size.z;
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loc = loc * size - make_float3(0.5f, 0.5f, 0.5f);
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}
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} /* namespace */
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void point_density_texture_space(BL::Depsgraph &b_depsgraph,
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BL::ShaderNodeTexPointDensity &b_point_density_node,
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float3 &loc,
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float3 &size)
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{
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BL::Object b_ob(b_point_density_node.object());
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if (!b_ob) {
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loc = zero_float3();
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size = zero_float3();
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return;
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}
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float3 min, max;
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b_point_density_node.calc_point_density_minmax(b_depsgraph, &min[0], &max[0]);
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loc = (min + max) * 0.5f;
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size = (max - min) * 0.5f;
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density_texture_space_invert(loc, size);
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}
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CCL_NAMESPACE_END
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