/*
* GeoTools - The Open Source Java GIS Toolkit
* http://geotools.org
*
* (C) 2017, Open Source Geospatial Foundation (OSGeo)
*
* This library 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;
* version 2.1 of the License.
*
* This library 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.
*/
package org.geotools.filter.function.color;
/**
* Implements the lesscss.org desaturate function
*
* @author Andrea Aime - GeoSolutions
*/
public class DesaturateFunction extends AbstractHSLFunction {
public DesaturateFunction() {
super("desaturate");
}
protected void adjstRelative(float amount, HSLColor hsl) {
hsl.setSaturation(hsl.getSaturation() * (1 - amount));
}
protected void adjustAbsolute(float amount, HSLColor hsl) {
hsl.setSaturation(hsl.getSaturation() - amount);
}
}