/*
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.cos;
import static org.jwildfire.base.mathlib.MathLib.sin;
import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
public class TaurusFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
public static final String PARAM_R = "r";
public static final String PARAM_N = "n";
public static final String PARAM_INV = "inv";
public static final String PARAM_SOR = "sor";
private static final String[] paramNames = { PARAM_R, PARAM_N, PARAM_INV, PARAM_SOR };
private double r = 3.0;
private double n = 5.0;
private double inv = 1.5;
private double sor = 1.0;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
/* taurus by gossamer light */
double sx = sin(pAffineTP.x);
double cx = cos(pAffineTP.x);
double sy = sin(pAffineTP.y);
double cy = cos(pAffineTP.y);
double ir = (inv * r) + ((1.0 - inv) * (r * cos(n * pAffineTP.x)));
pVarTP.x += pAmount * (cx * (ir + sy));
pVarTP.y += pAmount * (sx * (ir + sy));
pVarTP.z += pAmount * (sor * cy) + ((1.0 - sor) * pAffineTP.y);
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { r, n, inv, sor };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_R.equalsIgnoreCase(pName))
r = pValue;
else if (PARAM_N.equalsIgnoreCase(pName))
n = pValue;
else if (PARAM_INV.equalsIgnoreCase(pName))
inv = pValue;
else if (PARAM_SOR.equalsIgnoreCase(pName))
sor = pValue;
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "taurus";
}
}