/*
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_PI;
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 Julia3DZFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_POWER = "power";
private static final String[] paramNames = { PARAM_POWER };
private int power = genRandomPower();
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
// if (power == 2)
// transformPower2(pContext, pXForm, pAffineTP, pVarTP, pAmount);
// else if (power == -2)
// transformPowerMinus2(pContext, pXForm, pAffineTP, pVarTP, pAmount);
// else if (power == 1)
// transformPower1(pContext, pXForm, pAffineTP, pVarTP, pAmount);
// else if (power == -1)
// transformPowerMinus1(pContext, pXForm, pAffineTP, pVarTP, pAmount);
// else
transformFunction(pContext, pXForm, pAffineTP, pVarTP, pAmount);
}
public void transformPower2(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
double r2d = sqrt(sqr(pAffineTP.x) + sqr(pAffineTP.y));
double r = pAmount * sqrt(r2d);
pVarTP.z = pVarTP.z + r * pAffineTP.z / r2d / 2;
double a = (atan2(pAffineTP.y, pAffineTP.x) / 2 + M_PI * pContext.random(2));
double sina = sin(a);
double cosa = cos(a);
pVarTP.x = pVarTP.x + r * cosa;
pVarTP.y = pVarTP.y + r * sina;
pVarTP.z += r * pAffineTP.z / (sqrt(r2d) * absPower);
}
public void transformPowerMinus2(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
double r2d = sqrt(sqr(pAffineTP.x) + sqr(pAffineTP.y));
double r = pAmount / sqrt(r2d);
pVarTP.z = pVarTP.z + r * pAffineTP.z / r2d / 2;
double a = M_PI * pContext.random(2) - atan2(pAffineTP.y, pAffineTP.x) / 2;
double sina = sin(a);
double cosa = cos(a);
pVarTP.x = pVarTP.x + r * cosa;
pVarTP.y = pVarTP.y + r * sina;
pVarTP.z += r * pAffineTP.z / (sqrt(r2d) * absPower);
}
public void transformPower1(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
pVarTP.x = pVarTP.x + pAmount * pAffineTP.x;
pVarTP.y = pVarTP.y + pAmount * pAffineTP.y;
pVarTP.z += pVarTP.z + pAmount * pAffineTP.z;
}
public void transformPowerMinus1(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
double r = pAmount / (sqr(pAffineTP.x) + sqr(pAffineTP.y));
pVarTP.x = pVarTP.x + r * pAffineTP.x;
pVarTP.y = pVarTP.y + r * pAffineTP.y;
pVarTP.z += pVarTP.z + r * pAffineTP.z;
}
public void transformFunction(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
double r2d = pAffineTP.x * pAffineTP.x + pAffineTP.y * pAffineTP.y;
double r = pAmount * pow(r2d, cPower);
int rnd = (int) (pContext.random() * absPower);
double angle = (atan2(pAffineTP.y, pAffineTP.x) + 2 * M_PI * rnd) / power;
double sina = sin(angle);
double cosa = cos(angle);
pVarTP.x += r * cosa;
pVarTP.y += r * sina;
pVarTP.z += r * pAffineTP.z / (sqrt(r2d) * absPower);
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { power };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_POWER.equalsIgnoreCase(pName))
power = Tools.FTOI(pValue);
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "julia3Dz";
}
private int genRandomPower() {
int res = (int) (Math.random() * 5.0 + 2.5);
return Math.random() < 0.5 ? res : -res;
}
private double absPower, cPower;
@Override
public void init(FlameTransformationContext pContext, Layer pLayer, XForm pXForm, double pAmount) {
absPower = fabs(power);
cPower = 1.0 / power * 0.5;
}
}