/*
* Copyright (c) 2009-2012 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
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package com.jme3.scene.plugins.blender.textures.generating;
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.TexturePixel;
import com.jme3.scene.plugins.blender.textures.generating.NoiseGenerator.DistanceFunction;
import com.jme3.scene.plugins.blender.textures.generating.NoiseGenerator.NoiseMath;
import com.jme3.texture.Image.Format;
/**
* This class generates the 'voronoi' texture.
* @author Marcin Roguski (Kaelthas)
*/
public class TextureGeneratorVoronoi extends TextureGenerator {
protected float noisesize;
protected float outscale;
protected float mexp;
protected DistanceFunction distanceFunction;
protected int voronoiColorType;
protected float[] da = new float[4], pa = new float[12];
protected float[] hashPoint;
protected float[] voronoiWeights;
protected float weightSum;
/**
* Constructor stores the given noise generator.
* @param noiseGenerator
* the noise generator
*/
public TextureGeneratorVoronoi(NoiseGenerator noiseGenerator) {
super(noiseGenerator, Format.Luminance8);
}
@Override
public void readData(Structure tex, BlenderContext blenderContext) {
super.readData(tex, blenderContext);
voronoiWeights = new float[4];
voronoiWeights[0] = ((Number) tex.getFieldValue("vn_w1")).floatValue();
voronoiWeights[1] = ((Number) tex.getFieldValue("vn_w2")).floatValue();
voronoiWeights[2] = ((Number) tex.getFieldValue("vn_w3")).floatValue();
voronoiWeights[3] = ((Number) tex.getFieldValue("vn_w4")).floatValue();
noisesize = ((Number) tex.getFieldValue("noisesize")).floatValue();
outscale = ((Number) tex.getFieldValue("ns_outscale")).floatValue();
mexp = ((Number) tex.getFieldValue("vn_mexp")).floatValue();
int distanceType = ((Number) tex.getFieldValue("vn_distm")).intValue();
distanceFunction = NoiseGenerator.distanceFunctions.get(distanceType);
voronoiColorType = ((Number) tex.getFieldValue("vn_coltype")).intValue();
hashPoint = voronoiColorType != 0 ? new float[3] : null;
weightSum = voronoiWeights[0] + voronoiWeights[1] + voronoiWeights[2] + voronoiWeights[3];
if (weightSum != 0.0f) {
weightSum = outscale / weightSum;
}
if (voronoiColorType != 0 || colorBand != null) {
imageFormat = Format.RGBA8;
}
}
@Override
public void getPixel(TexturePixel pixel, float x, float y, float z) {
// for voronoi we need to widen the range a little
NoiseGenerator.NoiseFunctions.voronoi(x * 4, y * 4, z * 4, da, pa, mexp, distanceFunction);
pixel.intensity = weightSum * FastMath.abs(voronoiWeights[0] * da[0] + voronoiWeights[1] * da[1] + voronoiWeights[2] * da[2] + voronoiWeights[3] * da[3]);
if (pixel.intensity > 1.0f) {
pixel.intensity = 1.0f;
} else if (pixel.intensity < 0.0f) {
pixel.intensity = 0.0f;
}
if (colorBand != null) {// colorband ALWAYS goes first and covers the color (if set)
int colorbandIndex = (int) (pixel.intensity * 1000.0f);
pixel.red = colorBand[colorbandIndex][0];
pixel.green = colorBand[colorbandIndex][1];
pixel.blue = colorBand[colorbandIndex][2];
pixel.alpha = colorBand[colorbandIndex][3];
} else if (voronoiColorType != 0) {
pixel.red = pixel.green = pixel.blue = 0.0f;
pixel.alpha = 1.0f;
for (int m = 0; m < 12; m += 3) {
float weight = voronoiWeights[m / 3];
NoiseMath.hash((int) pa[m], (int) pa[m + 1], (int) pa[m + 2], hashPoint);
pixel.red += weight * hashPoint[0];
pixel.green += weight * hashPoint[1];
pixel.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 *= pixel.intensity;
} else {
t1 *= weightSum;
}
pixel.red *= t1;
pixel.green *= t1;
pixel.blue *= t1;
} else {
pixel.red *= weightSum;
pixel.green *= weightSum;
pixel.blue *= weightSum;
}
}
if (voronoiColorType != 0 || colorBand != null) {
this.applyBrightnessAndContrast(bacd, pixel);
} else {
this.applyBrightnessAndContrast(pixel, bacd.contrast, bacd.brightness);
}
}
}