01: /*
02: * Copyright (c) 2005-2008 Substance Kirill Grouchnikov. All Rights Reserved.
03: *
04: * Redistribution and use in source and binary forms, with or without
05: * modification, are permitted provided that the following conditions are met:
06: *
07: * o Redistributions of source code must retain the above copyright notice,
08: * this list of conditions and the following disclaimer.
09: *
10: * o Redistributions in binary form must reproduce the above copyright notice,
11: * this list of conditions and the following disclaimer in the documentation
12: * and/or other materials provided with the distribution.
13: *
14: * o Neither the name of Substance Kirill Grouchnikov nor the names of
15: * its contributors may be used to endorse or promote products derived
16: * from this software without specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19: * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
20: * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
22: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
25: * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
26: * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
27: * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
28: * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29: */
30: package org.jvnet.substance.painter.noise;
31:
32: /**
33: * Noise filter that produces wood-like distribution. This class is part of
34: * officially supported API.
35: *
36: * @author Kirill Grouchnikov
37: */
38: public class WoodFilter implements NoiseFilter {
39: /**
40: * Stretch factor.
41: */
42: protected double factor;
43:
44: /**
45: * Creates new wood filter with default stretch factor.
46: */
47: public WoodFilter() {
48: this (20.0);
49: }
50:
51: /**
52: * Create new wood filter.
53: *
54: * @param factor
55: * Stretch factor.
56: */
57: public WoodFilter(double factor) {
58: this .factor = factor;
59: }
60:
61: /*
62: * (non-Javadoc)
63: *
64: * @see org.jvnet.substance.painter.noise.NoiseFilter#apply(double, double,
65: * double, double)
66: */
67: public double apply(double x, double y, double z, double origValue) {
68: return this .factor * origValue
69: - (int) (this.factor * origValue);
70: }
71: }
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