engine/src/blender/com/jme3/scene/plugins/blender/textures/TextureGeneratorVoronoi.java - platform/external/jmonkeyengine - Git at Google

 /*
  * Copyright (c) 2009-2010 jMonkeyEngine
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  * * Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimer.
  *
  * * Redistributions in binary form must reproduce the above copyright
  *   notice, this list of conditions and the following disclaimer in the
  *   documentation and/or other materials provided with the distribution.
  *
  * * Neither the name of 'jMonkeyEngine' nor the names of its contributors
  *   may be used to endorse or promote products derived from this software
  *   without specific prior written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package com.jme3.scene.plugins.blender.textures;

 import com.jme3.math.FastMath;
 import com.jme3.scene.plugins.blender.BlenderContext;
 import com.jme3.scene.plugins.blender.file.Structure;
 import com.jme3.scene.plugins.blender.textures.NoiseGenerator.NoiseMath;
 import com.jme3.texture.Image;
 import com.jme3.texture.Image.Format;
 import com.jme3.texture.Texture;
 import com.jme3.texture.Texture3D;
 import com.jme3.util.BufferUtils;
 import java.nio.ByteBuffer;
 import java.util.ArrayList;

 /**
  * This class generates the 'voronoi' texture.
  * @author Marcin Roguski (Kaelthas)
  */
 public class TextureGeneratorVoronoi extends TextureGenerator {

 	/**
 	 * Constructor stores the given noise generator.
 	 * @param noiseGenerator
 	 *        the noise generator
 	 */
 	public TextureGeneratorVoronoi(NoiseGenerator noiseGenerator) {
 		super(noiseGenerator);
 	}

 	@Override
 	protected Texture generate(Structure tex, int width, int height, int depth, BlenderContext blenderContext) {
 		float voronoiWeight1 = ((Number) tex.getFieldValue("vn_w1")).floatValue();
 		float voronoiWeight2 = ((Number) tex.getFieldValue("vn_w2")).floatValue();
 		float voronoiWeight3 = ((Number) tex.getFieldValue("vn_w3")).floatValue();
 		float voronoiWeight4 = ((Number) tex.getFieldValue("vn_w4")).floatValue();
 		float noisesize = ((Number) tex.getFieldValue("noisesize")).floatValue();
 		float outscale = ((Number) tex.getFieldValue("ns_outscale")).floatValue();
 		float mexp = ((Number) tex.getFieldValue("vn_mexp")).floatValue();
 		int distm = ((Number) tex.getFieldValue("vn_distm")).intValue();
 		int voronoiColorType = ((Number) tex.getFieldValue("vn_coltype")).intValue();

 		TexturePixel texres = new TexturePixel();
 		float[] texvec = new float[] { 0, 0, 0 };
 		int halfW = width >> 1, halfH = height >> 1, halfD = depth >> 1, index = 0;
 		float wDelta = 1.0f / halfW, hDelta = 1.0f / halfH, dDelta = 1.0f / halfD;

 		float[][] colorBand = this.computeColorband(tex, blenderContext);
 		Format format = voronoiColorType != 0 || colorBand != null ? Format.RGBA8 : Format.Luminance8;
 		int bytesPerPixel = voronoiColorType != 0 || colorBand != null ? 4 : 1;
 		BrightnessAndContrastData bacd = new BrightnessAndContrastData(tex);

 		float[] da = new float[4], pa = new float[12];
 		float[] hashPoint = voronoiColorType != 0 ? new float[3] : null;
 		float[] voronoiWeights = new float[] {FastMath.abs(voronoiWeight1), FastMath.abs(voronoiWeight2),
 											  FastMath.abs(voronoiWeight3), FastMath.abs(voronoiWeight4)};
 		float weight;
 		float sc = voronoiWeights[0] + voronoiWeights[1] + voronoiWeights[2] + voronoiWeights[3];
 		if (sc != 0.0f) {
 			sc = outscale / sc;
 		}

 		byte[] data = new byte[width * height * depth * bytesPerPixel];
 		for (int i = -halfW; i < halfW; ++i) {
 			texvec[0] = wDelta * i / noisesize;
 			for (int j = -halfH; j < halfH; ++j) {
 				texvec[1] = hDelta * j / noisesize;
 				for (int k = -halfD; k < halfD; ++k) {
 					texvec[2] = dDelta * k;
 					NoiseGenerator.NoiseFunctions.voronoi(texvec[0], texvec[1], texvec[2], da, pa, mexp, distm);
 					texres.intensity = sc * FastMath.abs(voronoiWeight1 * da[0] + voronoiWeight2 * da[1] + voronoiWeight3 * da[2] + voronoiWeight4 * da[3]);
 					if(texres.intensity>1.0f) {
 						texres.intensity = 1.0f;
 					} else if(texres.intensity<0.0f) {
 						texres.intensity = 0.0f;
 					}

 					if (colorBand != null) {//colorband ALWAYS goes first and covers the color (if set)
 						int colorbandIndex = (int) (texres.intensity * 1000.0f);
 						texres.red = colorBand[colorbandIndex][0];
 						texres.green = colorBand[colorbandIndex][1];
 						texres.blue = colorBand[colorbandIndex][2];
 						texres.alpha = colorBand[colorbandIndex][3];
 					} else if (voronoiColorType != 0) {
 						texres.red = texres.green = texres.blue = 0.0f;
 						texres.alpha = 1.0f;
 						for(int m=0; m<12; m+=3) {
 							weight = voronoiWeights[m/3];
 							this.cellNoiseV(pa[m], pa[m + 1], pa[m + 2], hashPoint);
 							texres.red += weight * hashPoint[0];
 							texres.green += weight * hashPoint[1];
 							texres.blue += weight * hashPoint[2];
 						}
 						if (voronoiColorType >= 2) {
 							float t1 = (da[1] - da[0]) * 10.0f;
 							if (t1 > 1.0f) {
 								t1 = 1.0f;
 							}
 							if (voronoiColorType == 3) {
 								t1 *= texres.intensity;
 							} else {
 								t1 *= sc;
 							}
 							texres.red *= t1;
 							texres.green *= t1;
 							texres.blue *= t1;
 						} else {
 							texres.red *= sc;
 							texres.green *= sc;
 							texres.blue *= sc;
 						}
 					}

 					if (voronoiColorType != 0 || colorBand != null) {
 						this.applyBrightnessAndContrast(bacd, texres);
 						data[index++] = (byte) (texres.red * 255.0f);
 						data[index++] = (byte) (texres.green * 255.0f);
 						data[index++] = (byte) (texres.blue * 255.0f);
 						data[index++] = (byte) (texres.alpha * 255.0f);
 					} else {
 						this.applyBrightnessAndContrast(texres, bacd.contrast, bacd.brightness);
 						data[index++] = (byte) (texres.intensity * 255.0f);
 					}
 				}
 			}
 		}
 		ArrayList<ByteBuffer> dataArray = new ArrayList<ByteBuffer>(1);
 		dataArray.add(BufferUtils.createByteBuffer(data));
 		return new Texture3D(new Image(format, width, height, depth, dataArray));
 	}

 	/**
      * Returns a vector/point/color in ca, using point hasharray directly
      */
     private void cellNoiseV(float x, float y, float z, float[] hashPoint) {
         int xi = (int) Math.floor(x);
         int yi = (int) Math.floor(y);
         int zi = (int) Math.floor(z);
         NoiseMath.hash(xi, yi, zi, hashPoint);
     }
 }
	/*
	* Copyright (c) 2009-2010 jMonkeyEngine
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions are
	* met:
	*
	* * Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	*
	* * Redistributions in binary form must reproduce the above copyright
	* notice, this list of conditions and the following disclaimer in the
	* documentation and/or other materials provided with the distribution.
	*
	* * Neither the name of 'jMonkeyEngine' nor the names of its contributors
	* may be used to endorse or promote products derived from this software
	* without specific prior written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
	* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
	* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
	* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
	* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
	* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
	* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/
	package com.jme3.scene.plugins.blender.textures;

	import com.jme3.math.FastMath;
	import com.jme3.scene.plugins.blender.BlenderContext;
	import com.jme3.scene.plugins.blender.file.Structure;
	import com.jme3.scene.plugins.blender.textures.NoiseGenerator.NoiseMath;
	import com.jme3.texture.Image;
	import com.jme3.texture.Image.Format;
	import com.jme3.texture.Texture;
	import com.jme3.texture.Texture3D;
	import com.jme3.util.BufferUtils;
	import java.nio.ByteBuffer;
	import java.util.ArrayList;

	/**
	* This class generates the 'voronoi' texture.
	* @author Marcin Roguski (Kaelthas)
	*/
	public class TextureGeneratorVoronoi extends TextureGenerator {

	/**
	* Constructor stores the given noise generator.
	* @param noiseGenerator
	* the noise generator
	*/
	public TextureGeneratorVoronoi(NoiseGenerator noiseGenerator) {
	super(noiseGenerator);
	}

	@Override
	protected Texture generate(Structure tex, int width, int height, int depth, BlenderContext blenderContext) {
	float voronoiWeight1 = ((Number) tex.getFieldValue("vn_w1")).floatValue();
	float voronoiWeight2 = ((Number) tex.getFieldValue("vn_w2")).floatValue();
	float voronoiWeight3 = ((Number) tex.getFieldValue("vn_w3")).floatValue();
	float voronoiWeight4 = ((Number) tex.getFieldValue("vn_w4")).floatValue();
	float noisesize = ((Number) tex.getFieldValue("noisesize")).floatValue();
	float outscale = ((Number) tex.getFieldValue("ns_outscale")).floatValue();
	float mexp = ((Number) tex.getFieldValue("vn_mexp")).floatValue();
	int distm = ((Number) tex.getFieldValue("vn_distm")).intValue();
	int voronoiColorType = ((Number) tex.getFieldValue("vn_coltype")).intValue();

	TexturePixel texres = new TexturePixel();
	float[] texvec = new float[] { 0, 0, 0 };
	int halfW = width >> 1, halfH = height >> 1, halfD = depth >> 1, index = 0;
	float wDelta = 1.0f / halfW, hDelta = 1.0f / halfH, dDelta = 1.0f / halfD;

	float[][] colorBand = this.computeColorband(tex, blenderContext);
	Format format = voronoiColorType != 0 \|\| colorBand != null ? Format.RGBA8 : Format.Luminance8;
	int bytesPerPixel = voronoiColorType != 0 \|\| colorBand != null ? 4 : 1;
	BrightnessAndContrastData bacd = new BrightnessAndContrastData(tex);

	float[] da = new float[4], pa = new float[12];
	float[] hashPoint = voronoiColorType != 0 ? new float[3] : null;
	float[] voronoiWeights = new float[] {FastMath.abs(voronoiWeight1), FastMath.abs(voronoiWeight2),
	FastMath.abs(voronoiWeight3), FastMath.abs(voronoiWeight4)};
	float weight;
	float sc = voronoiWeights[0] + voronoiWeights[1] + voronoiWeights[2] + voronoiWeights[3];
	if (sc != 0.0f) {
	sc = outscale / sc;
	}

	byte[] data = new byte[width * height * depth * bytesPerPixel];
	for (int i = -halfW; i < halfW; ++i) {
	texvec[0] = wDelta * i / noisesize;
	for (int j = -halfH; j < halfH; ++j) {
	texvec[1] = hDelta * j / noisesize;
	for (int k = -halfD; k < halfD; ++k) {
	texvec[2] = dDelta * k;
	NoiseGenerator.NoiseFunctions.voronoi(texvec[0], texvec[1], texvec[2], da, pa, mexp, distm);
	texres.intensity = sc * FastMath.abs(voronoiWeight1 * da[0] + voronoiWeight2 * da[1] + voronoiWeight3 * da[2] + voronoiWeight4 * da[3]);
	if(texres.intensity>1.0f) {
	texres.intensity = 1.0f;
	} else if(texres.intensity<0.0f) {
	texres.intensity = 0.0f;
	}

	if (colorBand != null) {//colorband ALWAYS goes first and covers the color (if set)
	int colorbandIndex = (int) (texres.intensity * 1000.0f);
	texres.red = colorBand[colorbandIndex][0];
	texres.green = colorBand[colorbandIndex][1];
	texres.blue = colorBand[colorbandIndex][2];
	texres.alpha = colorBand[colorbandIndex][3];
	} else if (voronoiColorType != 0) {
	texres.red = texres.green = texres.blue = 0.0f;
	texres.alpha = 1.0f;
	for(int m=0; m<12; m+=3) {
	weight = voronoiWeights[m/3];
	this.cellNoiseV(pa[m], pa[m + 1], pa[m + 2], hashPoint);
	texres.red += weight * hashPoint[0];
	texres.green += weight * hashPoint[1];
	texres.blue += weight * hashPoint[2];
	}
	if (voronoiColorType >= 2) {
	float t1 = (da[1] - da[0]) * 10.0f;
	if (t1 > 1.0f) {
	t1 = 1.0f;
	}
	if (voronoiColorType == 3) {
	t1 *= texres.intensity;
	} else {
	t1 *= sc;
	}
	texres.red *= t1;
	texres.green *= t1;
	texres.blue *= t1;
	} else {
	texres.red *= sc;
	texres.green *= sc;
	texres.blue *= sc;
	}
	}

	if (voronoiColorType != 0 \|\| colorBand != null) {
	this.applyBrightnessAndContrast(bacd, texres);
	data[index++] = (byte) (texres.red * 255.0f);
	data[index++] = (byte) (texres.green * 255.0f);
	data[index++] = (byte) (texres.blue * 255.0f);
	data[index++] = (byte) (texres.alpha * 255.0f);
	} else {
	this.applyBrightnessAndContrast(texres, bacd.contrast, bacd.brightness);
	data[index++] = (byte) (texres.intensity * 255.0f);
	}
	}
	}
	}
	ArrayList<ByteBuffer> dataArray = new ArrayList<ByteBuffer>(1);
	dataArray.add(BufferUtils.createByteBuffer(data));
	return new Texture3D(new Image(format, width, height, depth, dataArray));
	}

	/**
	* Returns a vector/point/color in ca, using point hasharray directly
	*/
	private void cellNoiseV(float x, float y, float z, float[] hashPoint) {
	int xi = (int) Math.floor(x);
	int yi = (int) Math.floor(y);
	int zi = (int) Math.floor(z);
	NoiseMath.hash(xi, yi, zi, hashPoint);
	}
	}