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/*
Copyright 2006 Jerry Huxtable
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.jhlabs.image;
import java.awt.*;
import java.awt.image.*;
public class ContrastFilter extends TransferFilter {
private float brightness = 1.0f;
private float contrast = 1.0f;
protected float transferFunction( float f ) {
f = f*brightness;
f = (f-0.5f)*contrast+0.5f;
return f;
}
public void setBrightness(float brightness) {
this.brightness = brightness;
initialized = false;
}
public float getBrightness() {
return brightness;
}
public void setContrast(float contrast) {
this.contrast = contrast;
initialized = false;
}
public float getContrast() {
return contrast;
}
public String toString() {
return "Colors/Contrast...";
}
}
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