/*
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.M_2PI;
import static org.jwildfire.base.mathlib.MathLib.atan2;
import static org.jwildfire.base.mathlib.MathLib.cos;
import static org.jwildfire.base.mathlib.MathLib.fabs;
import static org.jwildfire.base.mathlib.MathLib.pow;
import static org.jwildfire.base.mathlib.MathLib.sin;
import static org.jwildfire.base.mathlib.MathLib.sqr;
import static org.jwildfire.base.mathlib.MathLib.sqrt;
import org.jwildfire.base.Tools;
import org.jwildfire.create.tina.base.Layer;
import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
public class Julia3DQFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_POWER = "power";
private static final String PARAM_DIVISOR = "divisor";
private static final String[] paramNames = { PARAM_POWER, PARAM_DIVISOR };
private int power = genRandomPower();
private int divisor = 2;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
// julia3Dq by Zueuk, http://zueuk.deviantart.com/art/juliaq-Apophysis-plugins-340813357
double a = atan2(pAffineTP.y, pAffineTP.x) * inv_power + pContext.random(Integer.MAX_VALUE) * inv_power_2pi;
double sina = sin(a);
double cosa = cos(a);
double z = pAffineTP.z * abs_inv_power;
double r2d = sqr(pAffineTP.x) + sqr(pAffineTP.y);
double r = pAmount * pow(r2d + sqr(z), half_inv_power);
pVarTP.z += r * z;
r *= sqrt(r2d);
pVarTP.x += r * cosa;
pVarTP.y += r * sina;
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { power, divisor };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_POWER.equalsIgnoreCase(pName)) {
power = Tools.FTOI(pValue);
}
else if (PARAM_DIVISOR.equalsIgnoreCase(pName))
divisor = Tools.FTOI(pValue);
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "julia3Dq";
}
private int genRandomPower() {
int res = (int) (Math.random() * 5.0 + 2.5);
return Math.random() < 0.5 ? res : -res;
}
private double inv_power, abs_inv_power, half_inv_power, inv_power_2pi;
@Override
public void init(FlameTransformationContext pContext, Layer pLayer, XForm pXForm, double pAmount) {
inv_power = (double) divisor / (double) power;
abs_inv_power = fabs(inv_power);
half_inv_power = 0.5 * inv_power - 0.5;
inv_power_2pi = M_2PI / (double) power;
}
}