/*
* Copyright 2015 MovingBlocks
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.terasology.world.viewer.color;
import java.awt.image.ColorModel;
/**
* Maps ColorModel instances to Blender instances.
*/
public final class ColorBlenders {
private static final ColorBlenderArgb BLENDER_ARGB = new ColorBlenderArgb();
private static final ColorBlenderRgba BLENDER_RGBA = new ColorBlenderRgba();
private ColorBlenders() {
// no instances
}
/**
* Tries to find a {@link ColorBlender} mapping from source to target.
* @param source the source color model
* @param target the target color model
* @return the corresponding color blender
* @throws UnsupportedOperationException if color model is not supported
*/
public static ColorBlender forColorModel(ColorModel source, ColorModel target) {
if (!ColorModels.RGBA.equals(source)) {
throw new UnsupportedOperationException("source colormodel: " + source);
}
if (ColorModels.ARGB.equals(target)) {
return BLENDER_ARGB;
}
if (ColorModels.RGBA.equals(target)) {
return BLENDER_RGBA;
}
throw new UnsupportedOperationException("target colormodel: " + target);
}
}