forked from bartvdbraak/blender
66 lines
1.6 KiB
Plaintext
66 lines
1.6 KiB
Plaintext
/*
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* Copyright 2012, 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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/* Checker */
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float checker(point p)
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{
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p[0] = (p[0] + 0.00001) * 0.9999;
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p[1] = (p[1] + 0.00001) * 0.9999;
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p[2] = (p[2] + 0.00001) * 0.9999;
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int xi = (int)fabs(floor(p[0]));
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int yi = (int)fabs(floor(p[1]));
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int zi = (int)fabs(floor(p[2]));
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if ((xi % 2 == yi % 2) == (zi % 2)) {
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return 1.0;
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}
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else {
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return 0.0;
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}
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}
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shader node_checker_texture(
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int use_mapping = 0,
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matrix mapping = matrix(0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0),
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float Scale = 5.0,
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point Vector = P,
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color Color1 = color(0.8, 0.8, 0.8),
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color Color2 = color(0.2, 0.2, 0.2),
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output float Fac = 0.0,
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output color Color = color(0.0, 0.0, 0.0))
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{
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point p = Vector;
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if (use_mapping)
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p = transform(mapping, p);
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Fac = checker(p * Scale);
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if (Fac == 1.0) {
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Color = Color1;
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}
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else {
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Color = Color2;
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}
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}
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