Vignette.java

/*******************************************************************************
 * Copyright 2012 bmanuel
 * 
 * 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 com.bitfire.postprocessing.effects;

import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.glutils.FrameBuffer;
import com.bitfire.postprocessing.PostProcessorEffect;
import com.bitfire.postprocessing.filters.Vignetting;

public final class Vignette extends PostProcessorEffect {
	private Vignetting vignetting;
	private boolean controlSaturation;
	private float oneOnW, oneOnH;

	public Vignette (int viewportWidth, int viewportHeight, boolean controlSaturation) {
		this.controlSaturation = controlSaturation;
		oneOnW = 1f / (float)viewportWidth;
		oneOnH = 1f / (float)viewportHeight;
		vignetting = new Vignetting(controlSaturation);
	}

	@Override
	public void dispose () {
		vignetting.dispose();
	}

	public boolean doesSaturationControl () {
		return controlSaturation;
	}

	public void setIntensity (float intensity) {
		vignetting.setIntensity(intensity);
	}

	public void setCoords (float x, float y) {
		vignetting.setCoords(x, y);
	}

	public void setX (float x) {
		vignetting.setX(x);
	}

	public void setY (float y) {
		vignetting.setY(y);
	}

	public void setSaturation (float saturation) {
		vignetting.setSaturation(saturation);
	}

	public void setSaturationMul (float saturationMul) {
		vignetting.setSaturationMul(saturationMul);
	}

	public void setLutTexture (Texture texture) {
		vignetting.setLut(texture);
	}

	public void setLutIntensity (float value) {
		vignetting.setLutIntensity(value);
	}

	public void setLutIndexVal (int index, int value) {
		vignetting.setLutIndexVal(index, value);
	}

	public void setLutIndexOffset (float value) {
		vignetting.setLutIndexOffset(value);
	}

	/** Specify the center, in screen coordinates. */
	public void setCenter (float x, float y) {
		vignetting.setCenter(x * oneOnW, 1f - y * oneOnH);
	}

	public float getIntensity () {
		return vignetting.getIntensity();
	}

	public float getLutIntensity () {
		return vignetting.getLutIntensity();
	}

	public int getLutIndexVal (int index) {
		return vignetting.getLutIndexVal(index);
	}

	public Texture getLut () {
		return vignetting.getLut();
	}

	public float getCenterX () {
		return vignetting.getCenterX();
	}

	public float getCenterY () {
		return vignetting.getCenterY();
	}

	public float getCoordsX () {
		return vignetting.getX();
	}

	public float getCoordsY () {
		return vignetting.getY();
	}

	public float getSaturation () {
		return vignetting.getSaturation();
	}

	public float getSaturationMul () {
		return vignetting.getSaturationMul();
	}

	public boolean isGradientMappingEnabled () {
		return vignetting.isGradientMappingEnabled();
	}

	@Override
	public void rebind () {
		vignetting.rebind();
	}

	@Override
	public void render (FrameBuffer src, FrameBuffer dest) {
		restoreViewport(dest);
		vignetting.setInput(src).setOutput(dest).render();
	};
}