com.sun.scenario.effect.Glow Maven / Gradle / Ivy
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
package com.sun.scenario.effect;
import com.sun.javafx.geom.Point2D;
/**
* A high-level effect that makes the input image appear to glow,
* based on a configurable threshold.
*/
public class Glow extends DelegateEffect {
private final GaussianBlur blur;
private final Blend blend;
/**
* Constructs a new {@code Glow} effect with the default level (0.3),
* using the default input for source data.
* This is a shorthand equivalent to:
*
* new Glow(DefaultInput)
*
*/
public Glow() {
this(DefaultInput);
}
/**
* Constructs a new {@code Glow} effect with the default level (0.3).
*
* @param input the single input {@code Effect}
*/
public Glow(Effect input) {
super(input);
//
// (input)
// |
// GaussianBlur
// |
// Crop (input)
// | |
// Blend
// |
//
this.blur = new GaussianBlur(10f, input);
// crop to prevent blur fringes from being included in final result
Crop crop = new Crop(blur, input);
this.blend = new Blend(Blend.Mode.ADD, input, crop);
this.blend.setOpacity(0.3f);
}
protected Effect getDelegate() {
return blend;
}
/**
* Returns the input for this {@code Effect}.
*
* @return the input for this {@code Effect}
*/
public final Effect getInput() {
return getInputs().get(0);
}
/**
* Sets the input for this {@code Effect} to a specific
* {@code Effect} or to the default input if {@code input} is
* {@code null}.
*
* @param input the input for this {@code Effect}
*/
public void setInput(Effect input) {
setInput(0, input);
blur.setInput(input);
blend.setBottomInput(input);
}
/**
* Returns the level value, which controls the intensity of the glow effect.
*
* @return the level value
*/
public float getLevel() {
return blend.getOpacity();
}
/**
* Sets the level value, which controls the intensity of the glow effect.
*
* Min: 0.0
* Max: 1.0
* Default: 0.3
* Identity: 0.0
*
*
* @param level the level value
* @throws IllegalArgumentException if {@code level} is outside
* the allowable range
*/
public void setLevel(float level) {
float old = blend.getOpacity();
blend.setOpacity(level);
}
@Override
public Point2D transform(Point2D p, Effect defaultInput) {
return getDefaultedInput(0, defaultInput).transform(p, defaultInput);
}
@Override
public Point2D untransform(Point2D p, Effect defaultInput) {
return getDefaultedInput(0, defaultInput).untransform(p, defaultInput);
}
}