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/*
* 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 "stdosl.h"
shader node_voxel_texture(
string filename = "",
string interpolation = "linear",
int use_mapping = 0,
matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
point Vector = P,
output float Density = 0,
output color Color = 0)
{
point p = Vector;
if (use_mapping) {
p = transform(mapping, p);
}
else {
p = transform("object", Vector);
matrix tfm;
if (getattribute("geom:generated_transform", tfm))
p = transform(tfm, p);
}
if (p[0] < 0.0 || p[1] < 0.0 || p[2] < 0.0 ||
p[0] > 1.0 || p[1] > 1.0 || p[2] > 1.0)
{
Density = 0;
Color = color(0, 0, 0);
}
else {
Color = (color)texture3d(filename, p, "wrap", "periodic", "interp", interpolation, "alpha", Density);
}
}
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