/*
JWildfire - an image and animation processor written in Java
Copyright (C) 1995-2011 Andreas Maschke
This is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser
General Public License as published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.
This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this software;
if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jwildfire.create;
import java.awt.Color;
import org.jwildfire.base.Property;
import org.jwildfire.base.PropertyMax;
import org.jwildfire.base.PropertyMin;
import org.jwildfire.base.Tools;
import org.jwildfire.base.mathparser.JEPWrapper;
import org.jwildfire.image.SimpleImage;
import org.nfunk.jep.Node;
import com.l2fprod.common.beans.editor.ComboBoxPropertyEditor;
public class PerlinNoiseCreator extends ImageCreator {
public enum ColorMode {
CUSTOM, RANDOM, GREY
}
public enum Shape {
CLASSIC, RANDOM
}
@Property(description = "Seed for the random number generator (zero to produce totally random results)")
@PropertyMin(0)
private int seed = 123;
@Property(description = "Octave persistence")
@PropertyMin(0.0)
@PropertyMax(1.0)
private double persistence = 0.3;
@Property(description = "Number of octaves")
@PropertyMin(12)
private int octaves = 7;
@Property(description = "Initial frequency")
@PropertyMin(0.0)
private double initialFrequency = 5.0;
@Property(description = "Frequency modifier")
@PropertyMin(0.0)
private double frequencyMultiplier = 2.5;
@Property(description = "Low color")
private Color lowColor = new Color(20, 50, 200);
@Property(description = "High color")
private Color highColor = new Color(200, 220, 250);
@Property(description = "Color mode", editorClass = ColorModeEditor.class)
private ColorMode colorMode = ColorMode.CUSTOM;
@Property(description = "Texture shape", editorClass = ShapeEditor.class)
private Shape shape = Shape.RANDOM;
@Property(description = "Transformation on/off")
private boolean transform = false;
@Property(description = "Transformation expression", editorClass = ShapeEditor.class)
private String transformation = "sin(x*x)";
@Override
protected void fillImage(SimpleImage res) {
if (this.seed != 0)
Tools.srand123(this.seed);
JEPWrapper parser = null;
Node node = null;
if (transform) {
parser = new JEPWrapper();
parser.addVariable("x", 0.0);
node = parser.parse(transformation);
}
switch (colorMode) {
case RANDOM:
cA.randomize();
cB.randomize();
break;
case CUSTOM:
cA.setR(lowColor.getRed());
cA.setG(lowColor.getGreen());
cA.setB(lowColor.getBlue());
cB.setR(highColor.getRed());
cB.setG(highColor.getGreen());
cB.setB(highColor.getBlue());
break;
case GREY:
double dA= Tools.drand();
cA.setR(dA);
cA.setG(dA);
cA.setB(dA);
double dB= Tools.drand();
cB.setR(dB);
cB.setG(dB);
cB.setB(dB);
break;
}
initShape();
int width = res.getImageWidth();
int height = res.getImageHeight();
for (int i = 0; i < height; i++) {
double y = (double) i / (double) height;
for (int j = 0; j < width; j++) {
double x = (double) j / (double) width;
double freq = initialFrequency;
double alphaInt = 1.0;
double grayValue = 0.0;
for (int l = 0; l < octaves; l++) {
double noiseValue = noise(x * freq, y * freq, 0.0);
if (transform) {
parser.setVarValue("x", noiseValue);
noiseValue = (Double) parser.evaluate(node);
}
grayValue += alphaInt * noiseValue;
freq *= frequencyMultiplier;
alphaInt *= persistence;
}
RGBVal color = getColor(grayValue);
fSetPixel(res, j, i, color);
}
}
}
private RGBVal cA = new RGBVal();
private RGBVal cB = new RGBVal();
private RGBVal getColor(double pGrayValue) {
if (pGrayValue < 0.0)
pGrayValue = 0 - pGrayValue;
if (pGrayValue < 0.0001)
pGrayValue = 0.0001;
else if (pGrayValue > 0.9999)
pGrayValue = 0.9999;
RGBVal res = new RGBVal();
if (colorMode == ColorMode.GREY) {
res.setR(pGrayValue);
res.setG(pGrayValue);
res.setB(pGrayValue);
}
else {
res.setR(cA.getR() * (1.0 - pGrayValue) + cB.getR() * pGrayValue);
res.setG(cA.getG() * (1.0 - pGrayValue) + cB.getG() * pGrayValue);
res.setB(cA.getB() * (1.0 - pGrayValue) + cB.getB() * pGrayValue);
}
return res;
}
private static class RGBVal {
private double r;
private double g;
private double b;
public double getR() {
return r;
}
public void randomize() {
r = Tools.drand();
g = Tools.drand();
b = Tools.drand();
}
public double getG() {
return g;
}
public double getB() {
return b;
}
public void setR(int r) {
this.r = (double) r / 255.0;
}
public void setR(double r) {
this.r = r;
}
public void setG(double g) {
this.g = g;
}
public void setG(int g) {
this.g = (double) g / 255.0;
;
}
public void setB(double b) {
this.b = b;
}
public void setB(int b) {
this.b = (double) b / 255.0;
}
}
private void fSetPixel(SimpleImage pImg, int pX, int pY, RGBVal pColor) {
int r = Tools.roundColor(255.0 * pColor.getR());
int g = Tools.roundColor(255.0 * pColor.getG());
int b = Tools.roundColor(255.0 * pColor.getB());
pImg.setRGB(pX, pY, r, g, b);
}
public int getSeed() {
return seed;
}
public void setSeed(int seed) {
this.seed = seed;
}
private double noise(double x, double y, double z) {
int X = (int) Math.floor(x) & 255, // FIND UNIT CUBE THAT
Y = (int) Math.floor(y) & 255, // CONTAINS POINT.
Z = (int) Math.floor(z) & 255;
x -= Math.floor(x); // FIND RELATIVE X,Y,Z
y -= Math.floor(y); // OF POINT IN CUBE.
z -= Math.floor(z);
double u = fade(x), // COMPUTE FADE CURVES
v = fade(y), // FOR EACH OF X,Y,Z.
w = fade(z);
int A = p[X] + Y, AA = p[A] + Z, AB = p[A + 1] + Z, // HASH COORDINATES OF
B = p[X + 1] + Y, BA = p[B] + Z, BB = p[B + 1] + Z; // THE 8 CUBE CORNERS,
return lerp(w, lerp(v, lerp(u, grad(p[AA], x, y, z), // AND ADD
grad(p[BA], x - 1, y, z)), // BLENDED
lerp(u, grad(p[AB], x, y - 1, z), // RESULTS
grad(p[BB], x - 1, y - 1, z))),// FROM 8
lerp(v, lerp(u, grad(p[AA + 1], x, y, z - 1), // CORNERS
grad(p[BA + 1], x - 1, y, z - 1)), // OF CUBE
lerp(u, grad(p[AB + 1], x, y - 1, z - 1), grad(p[BB + 1], x - 1, y - 1, z - 1))));
}
private double fade(double t) {
return t * t * t * (t * (t * 6 - 15) + 10);
}
private double lerp(double t, double a, double b) {
return a + t * (b - a);
}
private double grad(int hash, double x, double y, double z) {
int h = hash & 15; // CONVERT LO 4 BITS OF HASH CODE
double u = h < 8 ? x : y, // INTO 12 GRADIENT DIRECTIONS.
v = h < 4 ? y : h == 12 || h == 14 ? x : z;
return ((h & 1) == 0 ? u : -u) + ((h & 2) == 0 ? v : -v);
}
static final int p[] = new int[512], permutation[] = { 151, 160, 137, 91, 90, 15, 131, 13, 201,
95, 96, 53, 194, 233, 7, 225, 140, 36, 103, 30, 69, 142, 8, 99, 37, 240, 21, 10, 23, 190, 6,
148, 247, 120, 234, 75, 0, 26, 197, 62, 94, 252, 219, 203, 117, 35, 11, 32, 57, 177, 33, 88,
237, 149, 56, 87, 174, 20, 125, 136, 171, 168, 68, 175, 74, 165, 71, 134, 139, 48, 27, 166,
77, 146, 158, 231, 83, 111, 229, 122, 60, 211, 133, 230, 220, 105, 92, 41, 55, 46, 245, 40,
244, 102, 143, 54, 65, 25, 63, 161, 1, 216, 80, 73, 209, 76, 132, 187, 208, 89, 18, 169, 200,
196, 135, 130, 116, 188, 159, 86, 164, 100, 109, 198, 173, 186, 3, 64, 52, 217, 226, 250,
124, 123, 5, 202, 38, 147, 118, 126, 255, 82, 85, 212, 207, 206, 59, 227, 47, 16, 58, 17,
182, 189, 28, 42, 223, 183, 170, 213, 119, 248, 152, 2, 44, 154, 163, 70, 221, 153, 101, 155,
167, 43, 172, 9, 129, 22, 39, 253, 19, 98, 108, 110, 79, 113, 224, 232, 178, 185, 112, 104,
218, 246, 97, 228, 251, 34, 242, 193, 238, 210, 144, 12, 191, 179, 162, 241, 81, 51, 145,
235, 249, 14, 239, 107, 49, 192, 214, 31, 181, 199, 106, 157, 184, 84, 204, 176, 115, 121,
50, 45, 127, 4, 150, 254, 138, 236, 205, 93, 222, 114, 67, 29, 24, 72, 243, 141, 128, 195,
78, 66, 215, 61, 156, 180 };
private void initShape() {
switch (shape) {
case CLASSIC:
for (int i = 0; i < 256; i++) {
p[256 + i] = p[i] = permutation[i];
}
break;
case RANDOM:
for (int i = 0; i < 256; i++) {
p[256 + i] = p[i] = (int) (255.0 * Tools.drand() + 0.5);
}
break;
}
}
public double getPersistence() {
return persistence;
}
public void setPersistence(double persistence) {
this.persistence = persistence;
}
public int getOctaves() {
return octaves;
}
public void setOctaves(int octaves) {
this.octaves = octaves;
}
public double getInitialFrequency() {
return initialFrequency;
}
public void setInitialFrequency(double initialFrequency) {
this.initialFrequency = initialFrequency;
}
public double getFrequencyMultiplier() {
return frequencyMultiplier;
}
public void setFrequencyMultiplier(double frequencyMultiplier) {
this.frequencyMultiplier = frequencyMultiplier;
}
public static class ColorModeEditor extends ComboBoxPropertyEditor {
public ColorModeEditor() {
super();
setAvailableValues(new ColorMode[] { ColorMode.CUSTOM, ColorMode.RANDOM, ColorMode.GREY });
}
}
public static class ShapeEditor extends ComboBoxPropertyEditor {
public ShapeEditor() {
super();
setAvailableValues(new Shape[] { Shape.CLASSIC, Shape.RANDOM });
}
}
public ColorMode getColorMode() {
return colorMode;
}
public void setColorMode(ColorMode colorMode) {
this.colorMode = colorMode;
}
public Color getLowColor() {
return lowColor;
}
public void setLowColor(Color lowColor) {
this.lowColor = lowColor;
}
public Color getHighColor() {
return highColor;
}
public void setHighColor(Color highColor) {
this.highColor = highColor;
}
public Shape getShape() {
return shape;
}
public void setShape(Shape shape) {
this.shape = shape;
}
public boolean isTransform() {
return transform;
}
public void setTransform(boolean transform) {
this.transform = transform;
}
public String getTransformation() {
return transformation;
}
public void setTransformation(String transformation) {
this.transformation = transformation;
}
}