/*
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.transform;
import org.jwildfire.base.Property;
import org.jwildfire.base.PropertyCategory;
import org.jwildfire.base.PropertyMax;
import org.jwildfire.base.PropertyMin;
import org.jwildfire.base.Tools;
import org.jwildfire.image.Pixel;
import org.jwildfire.image.SimpleImage;
import org.jwildfire.image.WFImage;
import com.l2fprod.common.beans.editor.ComboBoxPropertyEditor;
public class TwirlTransformer extends Mesh2DTransformer {
public enum FallOff {
IN, OUT
};
@Property(description = "Twirl radius")
@PropertyMin(0.0)
private double radius = 220.0;
@Property(category = PropertyCategory.SECONDARY, description = "Global zoom factor for the whole image")
@PropertyMin(0.01)
@PropertyMax(100.0)
private double zoom = 1.0;
@Property(description = "Twirl angle")
@PropertyMin(-360.0)
@PropertyMax(360.0)
private double amount = 120.0;
@Property(category = PropertyCategory.SECONDARY, description = "Twirl power")
@PropertyMin(0.01)
@PropertyMax(10.0)
private double power = 2.0;
@Property(description = "X-coordinate of the effect origin")
private double centreX = 200.0;
@Property(description = "Y-coordinate of the effect origin")
private double centreY = 180.0;
@Property(description = "Direction of fall of", editorClass = FallOffEditor.class)
private FallOff fallOff = FallOff.OUT;
@Override
protected void performPixelTransformation(WFImage pImg) {
SimpleImage img = (SimpleImage) pImg;
double w1 = (double) pImg.getImageWidth() - 1.0;
double h1 = (double) pImg.getImageHeight() - 1.0;
double alpha = (0.0 - (double) (this.amount) * Math.PI) / (double) 180.0;
double cx = this.centreX - 0.5;
double cy = this.centreY - 0.5;
double zoom = 1.0 / this.zoom;
double radius = this.radius;
radius *= radius;
double power = this.power;
double da = alpha / Math.pow(radius, power);
Pixel pPixel = new Pixel();
for (int pY = 0; pY < pImg.getImageHeight(); pY++) {
for (int pX = 0; pX < pImg.getImageWidth(); pX++) {
pPixel.setARGBValue(img.getARGBValue(pX, pY));
double dyq = (double) pY - cy;
double y0 = dyq * zoom;
dyq *= dyq;
double x0 = (double) pX - cx;
double rr = x0 * x0 + dyq;
x0 *= zoom;
if (rr <= radius) {
if (this.fallOff == FallOff.OUT)
rr = radius - rr;
double am = Math.pow(rr, power) * da;
double sina = Math.sin(am);
double cosa = Math.cos(am);
double x = cosa * x0 + sina * y0 + cx;
double y = -sina * x0 + cosa * y0 + cy;
double xi = Tools.fmod33(x);
double yi = Tools.fmod33(y);
if ((x < 0.0) || (x > w1) || (y < 0.0) || (y > h1)) {
pPixel.r = pPixel.g = pPixel.b = 0;
}
else {
readSrcPixels(x, y);
pPixel.r = roundColor(((1.0 - yi) * ((1.0 - xi) * (srcP.r) + xi * (srcQ.r)) + yi
* ((1.0 - xi) * (srcR.r) + xi * (srcS.r))));
pPixel.g = roundColor(((1.0 - yi) * ((1.0 - xi) * (srcP.g) + xi * (srcQ.g)) + yi
* ((1.0 - xi) * (srcR.g) + xi * (srcS.g))));
pPixel.b = roundColor(((1.0 - yi) * ((1.0 - xi) * (srcP.b) + xi * (srcQ.b)) + yi
* ((1.0 - xi) * (srcR.b) + xi * (srcS.b))));
}
}
else {
readSrcPixels(pX, pY);
pPixel.r = srcP.r;
pPixel.g = srcP.g;
pPixel.b = srcP.b;
}
img.setRGB(pX, pY, pPixel.r, pPixel.g, pPixel.b);
}
}
applySmoothing(img, 1);
}
@Override
public void initDefaultParams(WFImage pImg) {
int width = pImg.getImageWidth();
int height = pImg.getImageHeight();
double rr = Math.sqrt(width * width + height * height);
radius = rr / 3.0;
zoom = 1.0;
amount = rr / 12.0;
power = 2.0;
centreX = (double) width / 2.1;
centreY = (double) height / 1.9;
fallOff = FallOff.OUT;
}
public double getRadius() {
return radius;
}
public void setRadius(double radius) {
this.radius = radius;
}
public double getZoom() {
return zoom;
}
public void setZoom(double zoom) {
this.zoom = zoom;
}
public double getAmount() {
return amount;
}
public void setAmount(double amount) {
this.amount = amount;
}
public double getPower() {
return power;
}
public void setPower(double power) {
this.power = power;
}
public double getCentreX() {
return centreX;
}
public void setCentreX(double centreX) {
this.centreX = centreX;
}
public double getCentreY() {
return centreY;
}
public void setCentreY(double centreY) {
this.centreY = centreY;
}
public FallOff getFallOff() {
return fallOff;
}
public void setFallOff(FallOff fallOff) {
this.fallOff = fallOff;
}
public static class FallOffEditor extends ComboBoxPropertyEditor {
public FallOffEditor() {
super();
setAvailableValues(new FallOff[] { FallOff.IN, FallOff.OUT });
}
}
}