/*
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.EPSILON;
import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
public class Ovoid3DFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_X = "x";
private static final String PARAM_Y = "y";
private static final String PARAM_Z = "z";
private static final String[] paramNames = { PARAM_X, PARAM_Y, PARAM_Z };
private double x = 1.0;
private double y = 1.0;
private double z = 1.0;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
// ovoid3d by Larry Berlin, http://aporev.deviantart.com/gallery/#/d2blmhg
double T = pAffineTP.x * pAffineTP.x + pAffineTP.y * pAffineTP.y + pAffineTP.z * pAffineTP.z + EPSILON;
double r = pAmount / T;
pVarTP.x += pAffineTP.x * r * x;
pVarTP.y += pAffineTP.y * r * y;
pVarTP.z += pAffineTP.z * r * z;
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { x, y, z };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_X.equalsIgnoreCase(pName))
x = pValue;
else if (PARAM_Y.equalsIgnoreCase(pName))
y = pValue;
else if (PARAM_Z.equalsIgnoreCase(pName))
z = pValue;
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "ovoid3d";
}
}