/*
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.render;
import org.jwildfire.create.tina.base.Flame;
import org.jwildfire.create.tina.base.raster.AbstractRasterPoint;
import org.jwildfire.create.tina.random.AbstractRandomGenerator;
import org.jwildfire.image.Pixel;
public class SampleTonemapper {
private final Flame flame;
private final AbstractRandomGenerator randGen;
private final LogDensityPoint logDensityPnt;
private Pixel toolPixel;
private final GammaCorrectedRGBPoint rbgPoint;
private LogDensityFilter logDensityFilter;
private GammaCorrectionFilter gammaCorrectionFilter;
private AbstractRasterPoint[][] raster;
private int rasterWidth;
private int rasterHeight;
private int imageWidth;
private int imageHeight;
public SampleTonemapper(Flame pFlame, AbstractRasterPoint[][] pRaster, int pRasterWidth, int pRasterHeight, int pImageWidth, int pImageHeight, AbstractRandomGenerator pRandGen) {
logDensityPnt = new LogDensityPoint();
toolPixel = new Pixel();
flame = pFlame.makeCopy();
randGen = pRandGen;
rbgPoint = new GammaCorrectedRGBPoint();
logDensityFilter = new LogDensityFilter(pFlame, randGen);
gammaCorrectionFilter = new GammaCorrectionFilter(pFlame, false);
raster = pRaster;
rasterWidth = pRasterWidth;
rasterHeight = pRasterHeight;
imageWidth = pImageWidth;
imageHeight = pImageHeight;
logDensityFilter.setRaster(pRaster, pRasterWidth, pRasterHeight, pImageWidth, pImageHeight);
}
public int tonemapSample(int pX, int pY) {
logDensityFilter.transformPoint(logDensityPnt, pX, pY);
gammaCorrectionFilter.transformPoint(logDensityPnt, rbgPoint);
toolPixel.r = rbgPoint.red;
toolPixel.g = rbgPoint.green;
toolPixel.b = rbgPoint.blue;
toolPixel.a = rbgPoint.alpha;
return toolPixel.getARGBValue();
}
public double calcDensity(long pSampleCount) {
return logDensityFilter.calcDensity(pSampleCount);
}
public void setDensity(double quality) {
flame.setSampleDensity(quality);
LogDensityFilter newLogDensityFilter = new LogDensityFilter(flame, randGen);
GammaCorrectionFilter newGammaCorrectionFilter = new GammaCorrectionFilter(flame, false);
newLogDensityFilter.setRaster(raster, rasterWidth, rasterHeight, imageWidth, imageHeight);
gammaCorrectionFilter = newGammaCorrectionFilter;
logDensityFilter = newLogDensityFilter;
}
}