/*
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.exp;
import static org.jwildfire.base.mathlib.MathLib.fabs;
import static org.jwildfire.base.mathlib.MathLib.log;
import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
public class PostDepthFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_POWER = "power";
private static final String[] paramNames = { PARAM_POWER };
private double power = 1.0;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
// post_depth by Zyorg, http://zy0rg.deviantart.com/art/Blur-Package-347648919
double coeff = fabs(pVarTP.z);
if (coeff != 0.0 && power != 1.0)
coeff = exp(log(coeff) * power);
pVarTP.x = pAmount * (pAffineTP.x + pVarTP.x * coeff);
pVarTP.y = pAmount * (pAffineTP.y + pVarTP.y * coeff);
pVarTP.z = pAmount * (pAffineTP.z + pVarTP.z * coeff);
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { power };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_POWER.equalsIgnoreCase(pName))
power = pValue;
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "post_depth";
}
@Override
public int getPriority() {
return 1;
}
}