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* Copyright (C) 2012 Thomas Oster <thomas.oster@rwth-aachen.de>
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* RWTH Aachen University - 52062 Aachen, Germany
*
* VisiCut 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 3 of the License, or
* (at your option) any later version.
*
* VisiCut 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 VisiCut. If not, see <http://www.gnu.org/licenses/>.
**/
package com.t_oster.liblasercut.dithering;
import com.t_oster.liblasercut.BlackWhiteRaster;
import com.t_oster.liblasercut.GreyscaleRaster;
import com.t_oster.liblasercut.TimeIntensiveOperation;
/**
*
* @author Thomas Oster <thomas.oster@rwth-aachen.de>
*/
public abstract class DitheringAlgorithm extends TimeIntensiveOperation
{
protected GreyscaleRaster src;
protected BlackWhiteRaster target;
protected void setBlack(int x, int y, boolean black)
{
if (target != null)
{
target.setBlack(x, y, black);
}
else
{
src.setGreyScale(x, y, black ? 0 : 255);
}
}
public BlackWhiteRaster dither(GreyscaleRaster input)
{
src = input;
target = new BlackWhiteRaster(input.getWidth(), input.getHeight());
doDithering();
return target;
}
public void ditherDirect(GreyscaleRaster input)
{
src = input;
target = null;
doDithering();
}
public void ditherDirect(GreyscaleRaster input, BlackWhiteRaster output)
{
src = input;
target = output;
doDithering();
}
protected abstract void doDithering();
}