1/*
2 * Copyright (c) 2009-2010 jMonkeyEngine
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 *   notice, this list of conditions and the following disclaimer.
11 *
12 * * Redistributions in binary form must reproduce the above copyright
13 *   notice, this list of conditions and the following disclaimer in the
14 *   documentation and/or other materials provided with the distribution.
15 *
16 * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
17 *   may be used to endorse or promote products derived from this software
18 *   without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
24 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
25 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
26 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
27 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
28 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
29 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
30 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
31 */
32package com.jme3.scene.plugins.blender.textures;
33
34import com.jme3.math.FastMath;
35import com.jme3.scene.plugins.blender.BlenderContext;
36import com.jme3.scene.plugins.blender.file.Structure;
37import com.jme3.texture.Image;
38import com.jme3.texture.Image.Format;
39import com.jme3.texture.Texture;
40import com.jme3.texture.Texture3D;
41import com.jme3.util.BufferUtils;
42import java.nio.ByteBuffer;
43import java.util.ArrayList;
44
45/**
46 * This class generates the 'noise' texture.
47 * @author Marcin Roguski (Kaelthas)
48 */
49public class TextureGeneratorNoise extends TextureGenerator {
50
51	/**
52	 * Constructor stores the given noise generator.
53	 * @param noiseGenerator
54	 *        the noise generator
55	 */
56	public TextureGeneratorNoise(NoiseGenerator noiseGenerator) {
57		super(noiseGenerator);
58	}
59
60	@Override
61	protected Texture generate(Structure tex, int width, int height, int depth, BlenderContext blenderContext) {
62		int val, random, loop;
63		int noisedepth = ((Number) tex.getFieldValue("noisedepth")).intValue();
64		TexturePixel texres = new TexturePixel();
65		int halfW = width >> 1, halfH = height >> 1, halfD = depth >> 1, index = 0;
66		float[][] colorBand = this.computeColorband(tex, blenderContext);
67		Format format = colorBand != null ? Format.RGBA8 : Format.Luminance8;
68		int bytesPerPixel = colorBand != null ? 4 : 1;
69		BrightnessAndContrastData bacd = new BrightnessAndContrastData(tex);
70
71		byte[] data = new byte[width * height * depth * bytesPerPixel];
72		for (int i = -halfW; i < halfW; ++i) {
73			for (int j = -halfH; j < halfH; ++j) {
74				for (int k = -halfD; k < halfD; ++k) {
75					random = FastMath.rand.nextInt();
76					val = random & 3;
77
78					loop = noisedepth;
79					while (loop-- != 0) {
80						random >>= 2;
81						val *= random & 3;
82					}
83					texres.intensity = FastMath.clamp(val, 0.0f, 1.0f);
84					if (colorBand != null) {
85						int colorbandIndex = (int) (texres.intensity * 1000.0f);
86						texres.red = colorBand[colorbandIndex][0];
87						texres.green = colorBand[colorbandIndex][1];
88						texres.blue = colorBand[colorbandIndex][2];
89
90						this.applyBrightnessAndContrast(bacd, texres);
91						data[index++] = (byte) (texres.red * 255.0f);
92						data[index++] = (byte) (texres.green * 255.0f);
93						data[index++] = (byte) (texres.blue * 255.0f);
94						data[index++] = (byte) (colorBand[colorbandIndex][3] * 255.0f);
95					} else {
96						this.applyBrightnessAndContrast(texres, bacd.contrast, bacd.brightness);
97						data[index++] = (byte) (texres.intensity * 255.0f);
98					}
99				}
100			}
101		}
102		ArrayList<ByteBuffer> dataArray = new ArrayList<ByteBuffer>(1);
103		dataArray.add(BufferUtils.createByteBuffer(data));
104		return new Texture3D(new Image(format, width, height, depth, dataArray));
105	}
106}
107