/*
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 org.jwildfire.create.tina.base.Layer;
import org.jwildfire.create.tina.base.XForm;
import org.jwildfire.create.tina.base.XYZPoint;
import static org.jwildfire.base.mathlib.MathLib.*;
public class NestedCirclesFunc extends VariationFunc {
private static final long serialVersionUID = 1L;
private static final String PARAM_LEVELS = "levels";
private static final String[] paramNames = {PARAM_LEVELS};
private int levels = 6;
@Override
public void transform(FlameTransformationContext pContext, XForm pXForm, XYZPoint pAffineTP, XYZPoint pVarTP, double pAmount) {
int level = (int) (sqrt(pContext.random()) * levels);
int n = 1 << level;
double radius = pAmount / n;
double x = topLeftx + radius / sqrt(2.0) + ((int) pContext.random(n)) * radius * sqrt(2.0);
double y = topLefty + radius / sqrt(2.0) + ((int) pContext.random(n)) * radius * sqrt(2.0);
double theta = pContext.random() * M_2PI;
pVarTP.x += radius * cos(theta) + x;
pVarTP.y += radius * sin(theta) + y;
if (pContext.isPreserveZCoordinate()) {
pVarTP.z += pAmount * pAffineTP.z;
}
}
@Override
public String[] getParameterNames() {
return paramNames;
}
@Override
public Object[] getParameterValues() {
return new Object[]{levels};
}
@Override
public void setParameter(String pName, double pValue) {
if (PARAM_LEVELS.equalsIgnoreCase(pName))
levels = (int) limitVal(pValue, 1, 10);
else
throw new IllegalArgumentException(pName);
}
@Override
public String getName() {
return "nested_circles";
}
private double topLeftx, topLefty;
@Override
public void init(FlameTransformationContext pContext, Layer pLayer, XForm pXForm, double pAmount) {
topLeftx = topLefty = -pAmount / sqrt(2.0);
}
@Override
public VariationFuncType[] getVariationTypes() {
return new VariationFuncType[]{VariationFuncType.VARTYPE_BASE_SHAPE};
}
}
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