/*
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 org.jwildfire.create.tina.base.Layer;
import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
public class CurveFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_XAMP = "xamp";
private static final String PARAM_YAMP = "yamp";
private static final String PARAM_XLENGTH = "xlength";
private static final String PARAM_YLENGTH = "ylength";
private static final String[] paramNames = { PARAM_XAMP, PARAM_YAMP, PARAM_XLENGTH, PARAM_YLENGTH };
private double xAmp = 0.25;
private double yAmp = 0.5;
private double xLength = 1.0;
private double yLength = 1.0;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
/* Curve in the Apophysis Plugin Pack */
pVarTP.x += pAmount * (pAffineTP.x + xAmp * exp(-pAffineTP.y * pAffineTP.y / _pc_xlen));
pVarTP.y += pAmount * (pAffineTP.y + yAmp * exp(-pAffineTP.x * pAffineTP.x / _pc_ylen));
if (pContext.isPreserveZCoordinate()) {
pVarTP.z += pAmount * pAffineTP.z;
}
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { xAmp, yAmp, xLength, yLength };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_XAMP.equalsIgnoreCase(pName))
xAmp = pValue;
else if (PARAM_YAMP.equalsIgnoreCase(pName))
yAmp = pValue;
else if (PARAM_XLENGTH.equalsIgnoreCase(pName))
xLength = pValue;
else if (PARAM_YLENGTH.equalsIgnoreCase(pName))
yLength = pValue;
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "curve";
}
private double _pc_xlen, _pc_ylen;
@Override
public void init(FlameTransformationContext pContext, Layer pLayer, XForm pXForm, double pAmount) {
_pc_xlen = xLength * xLength;
_pc_ylen = yLength * yLength;
if (_pc_xlen < 1E-20)
_pc_xlen = 1E-20;
if (_pc_ylen < 1E-20)
_pc_ylen = 1E-20;
}
}