/*
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 org.jwildfire.create.tina.base.Layer;
import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
public class PreCurlFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_C1 = "c1";
private static final String PARAM_C2 = "c2";
private static final String[] paramNames = { PARAM_C1, PARAM_C2 };
private double c1 = 0;
private double c2 = 0;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
// pre_curl by Xyrus02, http://xyrus-02.deviantart.com/art/pre-curl-Plugin-for-Apophysis-451146819
double x = pAffineTP.x;
double y = pAffineTP.y;
double re = 1 + c1 * x + c2 * (x * x - y * y);
double im = c1 * y + c2x2 * x * y;
double r = pAmount / (re * re + im * im);
pAffineTP.x = (x * re + y * im) * r;
pAffineTP.y = (y * re - x * im) * r;
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { c1, c2 };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_C1.equalsIgnoreCase(pName))
c1 = pValue;
else if (PARAM_C2.equalsIgnoreCase(pName))
c2 = pValue;
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "pre_curl";
}
private double c2x2;
@Override
public void init(FlameTransformationContext pContext, Layer pLayer, XForm pXForm, double pAmount) {
c2x2 = 2.0 * c2;
}
@Override
public int getPriority() {
return -1;
}
}