/*
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.tina.variation;
import static org.jwildfire.base.mathlib.MathLib.M_PI_4;
import static org.jwildfire.base.mathlib.MathLib.cos;
import static org.jwildfire.base.mathlib.MathLib.sin;
import org.jwildfire.create.tina.base.Layer;
import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
public class XHeartBlurWFFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
public static final String PARAM_ANGLE = "angle";
public static final String PARAM_RATIO = "ratio";
private static final String[] paramNames = { PARAM_ANGLE, PARAM_RATIO };
private double angle = 0.0;
private double ratio = 0.0;
// derived variables
private double rat, cosa, sina;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
// based on xheart by xyrus02, http://xyrus02.deviantart.com/art/XHeart-Plugin-139866412
double dx = 2.0 - pContext.random() * 4.0;
double dy = 2.0 - pContext.random() * 4.0;
double r2_4 = dx * dx + dy * dy + 4;
if (r2_4 == 0)
r2_4 = 1;
double bx = 4 / r2_4, by = rat / r2_4;
double x = cosa * (bx * dx) - sina * (by * dy);
double y = sina * (bx * dx) + cosa * (by * dy);
if (x > 0) {
pVarTP.x += pAmount * x;
pVarTP.y += pAmount * y;
}
else {
pVarTP.x += pAmount * x;
pVarTP.y += -pAmount * y;
}
if (pContext.isPreserveZCoordinate()) {
pVarTP.z += pAmount * pAffineTP.z;
}
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { angle, ratio };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_ANGLE.equalsIgnoreCase(pName))
angle = pValue;
else if (PARAM_RATIO.equalsIgnoreCase(pName))
ratio = pValue;
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "xheart_blur_wf";
}
@Override
public void init(FlameTransformationContext pContext, Layer pLayer, XForm pXForm, double pAmount) {
double ang = M_PI_4 + (0.5 * M_PI_4 * angle);
sina = sin(ang);
cosa = cos(ang);
rat = 6 + 2 * ratio;
}
}