da376e0237
Cycles uses code from some great open source projects, many thanks them: * BVH building and traversal code from NVidia's "Understanding the Efficiency of Ray Traversal on GPUs": http://code.google.com/p/understanding-the-efficiency-of-ray-traversal-on-gpus/ * Open Shading Language for a large part of the shading system: http://code.google.com/p/openshadinglanguage/ * Blender for procedural textures and a few other nodes. * Approximate Catmull Clark subdivision from NVidia Mesh tools: http://code.google.com/p/nvidia-mesh-tools/ * Sobol direction vectors from: http://web.maths.unsw.edu.au/~fkuo/sobol/ * Film response functions from: http://www.cs.columbia.edu/CAVE/software/softlib/dorf.php
64 lines
1.7 KiB
Plaintext
64 lines
1.7 KiB
Plaintext
/*
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* Copyright 2011, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "stdosl.h"
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#include "node_texture.h"
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/* Wood */
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float wood(point p, float size, string type, string wave, string basis, int hard, float turb)
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{
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float x = p[0];
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float y = p[1];
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float z = p[2];
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float result = 0.0;
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if(type == "Bands") {
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result = noise_wave(wave, (x + y + z)*10.0);
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}
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else if(type == "Rings") {
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result = noise_wave(wave, sqrt(x*x + y*y + z*z)*20.0);
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}
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else if (type == "Band Noise") {
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float wi = turb*noise_basis_hard(p/size, basis, hard);
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result = noise_wave(wave, (x + y + z)*10.0 + wi);
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}
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else if (type == "Ring Noise") {
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float wi = turb*noise_basis_hard(p/size, basis, hard);
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result = noise_wave(wave, sqrt(x*x + y*y + z*z)*20.0 + wi);
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}
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return result;
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}
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shader node_wood_texture(
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string Type = "Bands",
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string Wave = "Sine",
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string Basis = "Perlin",
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int Hard = 0,
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float Size = 0.25,
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float Turbulence = 5.0,
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point Vector = P,
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output float Fac = 0.0)
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{
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float size = nonzero(Size, 1e-5);
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Fac = wood(Vector, size, Type, Wave, Basis, Hard, Turbulence);
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}
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