/*
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.iabs;
import static org.jwildfire.base.mathlib.MathLib.pow;
import static org.jwildfire.base.mathlib.MathLib.round;
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 JuliaScopeFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_POWER = "power";
private static final String PARAM_DIST = "dist";
private static final String[] paramNames = { PARAM_POWER, PARAM_DIST };
private int power = genRandomPower();
private double dist = 1;
@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 a;
if (pContext.random(2) == 0) {
a = atan2(pAffineTP.y, pAffineTP.x) / 2.0;
}
else {
a = M_PI - atan2(pAffineTP.y, pAffineTP.x) / 2.0;
}
double sina = sin(a);
double cosa = cos(a);
double r = pAmount * sqrt(sqrt(sqr(pAffineTP.x) + sqr(pAffineTP.y)));
pVarTP.x = pVarTP.x + r * cosa;
pVarTP.y = pVarTP.y + r * sina;
if (pContext.isPreserveZCoordinate()) {
pVarTP.z += pAmount * pAffineTP.z;
}
}
public void transformPowerMinus2(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
double a;
if (pContext.random(2) == 0)
a = atan2(pAffineTP.y, pAffineTP.x) / 2.0;
else
a = M_PI - atan2(pAffineTP.y, pAffineTP.x) / 2.0;
double sina = sin(a);
double cosa = cos(a);
double r = pAmount / sqrt(sqrt(sqr(pAffineTP.x) + sqr(pAffineTP.y)));
pVarTP.x = pVarTP.x + r * cosa;
pVarTP.y = pVarTP.y - r * sina;
if (pContext.isPreserveZCoordinate()) {
pVarTP.z += pAmount * pAffineTP.z;
}
}
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;
if (pContext.isPreserveZCoordinate()) {
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;
if (pContext.isPreserveZCoordinate()) {
pVarTP.z += pAmount * pAffineTP.z;
}
}
public void transformFunction(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
int rnd = pContext.random(absPower);
double a;
if ((rnd & 1) == 0)
a = (2 * M_PI * rnd + atan2(pAffineTP.y, pAffineTP.x)) / power;
else
a = (2 * M_PI * rnd - atan2(pAffineTP.y, pAffineTP.x)) / power;
double sina = sin(a);
double cosa = cos(a);
double r = pAmount * pow(sqr(pAffineTP.x) + sqr(pAffineTP.y), cPower);
pVarTP.x = pVarTP.x + r * cosa;
pVarTP.y = pVarTP.y + r * sina;
if (pContext.isPreserveZCoordinate()) {
pVarTP.z += pAmount * pAffineTP.z;
}
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { power, dist };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_POWER.equalsIgnoreCase(pName))
power = (int) round(pValue);
else if (PARAM_DIST.equalsIgnoreCase(pName))
dist = pValue;
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "juliascope";
}
private int genRandomPower() {
int res = (int) (Math.random() * 5.0 + 2.5);
return Math.random() < 0.5 ? res : -res;
}
private int absPower;
private double cPower;
@Override
public void init(FlameTransformationContext pContext, Layer pLayer, XForm pXForm, double pAmount) {
absPower = iabs(Tools.FTOI(power));
cPower = dist / power * 0.5;
}
}