/*
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 static org.jwildfire.base.mathlib.MathLib.M_1_PI;
import static org.jwildfire.base.mathlib.MathLib.M_PI;
import static org.jwildfire.base.mathlib.MathLib.cos;
import static org.jwildfire.base.mathlib.MathLib.floor;
import static org.jwildfire.base.mathlib.MathLib.sin;
import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
public class WedgeSphFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_ANGLE = "angle";
private static final String PARAM_HOLE = "hole";
private static final String PARAM_COUNT = "count";
private static final String PARAM_SWIRL = "swirl";
private static final String[] paramNames = { PARAM_ANGLE, PARAM_HOLE, PARAM_COUNT, PARAM_SWIRL };
private double angle = 0.20;
private double hole = 0.20;
private double count = 2.0;
private double swirl = 0.30;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
/* Wedge_sph from apo plugins pack */
double r = 1.0 / (pAffineTP.getPrecalcSqrt() + EPSILON);
double a = pAffineTP.getPrecalcAtanYX() + swirl * r;
double c = floor((count * a + M_PI) * M_1_PI * 0.5);
double comp_fac = 1 - angle * count * M_1_PI * 0.5;
a = a * comp_fac + c * angle;
double sa = sin(a);
double ca = cos(a);
r = pAmount * (r + hole);
pVarTP.x += r * ca;
pVarTP.y += r * sa;
if (pContext.isPreserveZCoordinate()) {
pVarTP.z += pAmount * pAffineTP.z;
}
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { angle, hole, count, swirl };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_ANGLE.equalsIgnoreCase(pName))
angle = pValue;
else if (PARAM_HOLE.equalsIgnoreCase(pName))
hole = pValue;
else if (PARAM_COUNT.equalsIgnoreCase(pName))
count = pValue;
else if (PARAM_SWIRL.equalsIgnoreCase(pName))
swirl = pValue;
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "wedge_sph";
}
}