/*
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.cos;
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 Hypertile2Func extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_P = "p";
private static final String PARAM_Q = "q";
private static final String[] paramNames = { PARAM_P, PARAM_Q };
private int p = 3;
private int q = 7;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
/* hypertile2 by Zueuk, http://zueuk.deviantart.com/art/Hyperbolic-tiling-plugins-165829025?q=sort%3Atime+gallery%3AZueuk&qo=0 */
double a = pAffineTP.x + this.r;
double b = pAffineTP.y;
double c = this.r * pAffineTP.x + 1.0;
double d = this.r * pAffineTP.y;
double x = (a * c + b * d);
double y = (b * c - a * d);
double vr = pAmount / (sqr(c) + sqr(d));
double rpa = this.pa * pContext.random(Integer.MAX_VALUE);
double sina = sin(rpa);
double cosa = cos(rpa);
pVarTP.x += vr * (x * cosa + y * sina);
pVarTP.y += vr * (y * cosa - x * sina);
if (pContext.isPreserveZCoordinate()) {
pVarTP.z += pAmount * pAffineTP.z;
}
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[] { p, q };
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_P.equalsIgnoreCase(pName))
p = limitIntVal(Tools.FTOI(pValue), 3, Integer.MAX_VALUE);
else if (PARAM_Q.equalsIgnoreCase(pName))
q = limitIntVal(Tools.FTOI(pValue), 3, Integer.MAX_VALUE);
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "hypertile2";
}
private double pa, r;
@Override
public void init(FlameTransformationContext pContext, Layer pLayer, XForm pXForm, double pAmount) {
this.pa = 2.0 * M_PI / this.p;
double r2 = 1.0 - (cos(2.0 * M_PI / this.p) - 1.0) /
(cos(2.0 * M_PI / this.p) + cos(2.0 * M_PI / this.q));
if (r2 > 0)
this.r = 1.0 / sqrt(r2);
else
this.r = 1.0;
}
}