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 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
 * 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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 *
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 */

package javafx.scene.effect;


A blending mode defines the manner in which the inputs of a Blend
effect are composited together or how a Node is blended into the
background of a scene.

import javafx.scene.*;
import javafx.scene.effect.*;
import javafx.scene.paint.*;
import javafx.scene.shape.*;
Rectangle r = new Rectangle();
r.setX(50);
r.setY(50);
r.setWidth(50);
r.setHeight(50);
r.setFill(Color.BLUE);
Circle c = new Circle();
c.setFill(Color.rgb(255, 0, 0, 0.5));
c.setCenterX(50);
c.setCenterY(50);
c.setRadius(25);
c.setBlendMode(BlendMode.MULTIPLY);
Group g = new Group();
g.getChildren().add(r);
g.getChildren().add(c);



Since:JavaFX 2.0
/**
 * A blending mode defines the manner in which the inputs of a Blend
 * effect are composited together or how a Node is blended into the
 * background of a scene.
 *
<PRE>
import javafx.scene.*;
import javafx.scene.effect.*;
import javafx.scene.paint.*;
import javafx.scene.shape.*;

Rectangle r = new Rectangle();
r.setX(50);
r.setY(50);
r.setWidth(50);
r.setHeight(50);
r.setFill(Color.BLUE);

Circle c = new Circle();
c.setFill(Color.rgb(255, 0, 0, 0.5));
c.setCenterX(50);
c.setCenterY(50);
c.setRadius(25);
c.setBlendMode(BlendMode.MULTIPLY);

Group g = new Group();
g.getChildren().add(r);
g.getChildren().add(c);
</PRE>
 * @since JavaFX 2.0
 */
public enum BlendMode {

    
The top input is blended over the bottom input.
(Equivalent to the Porter-Duff "source over destination" rule.)

/**
     * The top input is blended over the bottom input.
     * (Equivalent to the Porter-Duff "source over destination" rule.)
     */
    SRC_OVER,

    
The part of the top input lying inside of the bottom input
is blended with the bottom input.
(Equivalent to the Porter-Duff "source atop destination" rule.)

/**
     * The part of the top input lying inside of the bottom input
     * is blended with the bottom input.
     * (Equivalent to the Porter-Duff "source atop destination" rule.)
     */
    SRC_ATOP,

    
The color and alpha components from the top input are
added to those from the bottom input.
The result is clamped to 1.0 if it exceeds the logical
maximum of 1.0.


Notes:

    

  • This mode is commutative (ordering of inputs
does not matter).

  • This mode is sometimes referred to as "linear dodge" in
imaging software packages.



/**
     * The color and alpha components from the top input are
     * added to those from the bottom input.
     * The result is clamped to 1.0 if it exceeds the logical
     * maximum of 1.0.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is commutative (ordering of inputs
     * does not matter).
     * <li>This mode is sometimes referred to as "linear dodge" in
     * imaging software packages.
     * </ul>
     */
    ADD,

    
The color components from the first input are multiplied with those from the second input. The alpha components are blended according to the SRC_OVER equation. 

Notes:

    

  • This mode is commutative (ordering of inputs
does not matter).

  • This mode is the mathematical opposite of the SCREEN mode. 
  • The resulting color is always at least as dark as either
of the input colors.

  • Rendering with a completely black top input produces black;
rendering with a completely white top input produces a result
equivalent to the bottom input.



/**
     * The color components from the first input are multiplied with those
     * from the second input.
     * The alpha components are blended according to
     * the {@link #SRC_OVER} equation.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is commutative (ordering of inputs
     * does not matter).
     * <li>This mode is the mathematical opposite of
     * the {@link #SCREEN} mode.
     * <li>The resulting color is always at least as dark as either
     * of the input colors.
     * <li>Rendering with a completely black top input produces black;
     * rendering with a completely white top input produces a result
     * equivalent to the bottom input.
     * </ul>
     */
    MULTIPLY,

    
The color components from both of the inputs are inverted, multiplied with each other, and that result is again inverted to produce the resulting color. The alpha components are blended according to the SRC_OVER equation. 

Notes:

    

  • This mode is commutative (ordering of inputs
does not matter).

  • This mode is the mathematical opposite of the MULTIPLY mode. 
  • The resulting color is always at least as light as either
of the input colors.

  • Rendering with a completely white top input produces white;
rendering with a completely black top input produces a result
equivalent to the bottom input.



/**
     * The color components from both of the inputs are
     * inverted, multiplied with each other, and that result
     * is again inverted to produce the resulting color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is commutative (ordering of inputs
     * does not matter).
     * <li>This mode is the mathematical opposite of
     * the {@link #MULTIPLY} mode.
     * <li>The resulting color is always at least as light as either
     * of the input colors.
     * <li>Rendering with a completely white top input produces white;
     * rendering with a completely black top input produces a result
     * equivalent to the bottom input.
     * </ul>
     */
    SCREEN,

    
The input color components are either multiplied or screened, depending on the bottom input color. The alpha components are blended according to the SRC_OVER equation. 

Notes:

    

  • This mode is a combination of SCREEN and MULTIPLY, depending on the bottom input color. 
  • This mode is the mathematical opposite of the HARD_LIGHT mode. 
  • In this mode, the top input colors "overlay" the bottom input
while preserving highlights and shadows of the latter.



/**
     * The input color components are either multiplied or screened,
     * depending on the bottom input color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is a combination of {@link #SCREEN} and
     * {@link #MULTIPLY}, depending on the bottom input color.
     * <li>This mode is the mathematical opposite of
     * the {@link #HARD_LIGHT} mode.
     * <li>In this mode, the top input colors "overlay" the bottom input
     * while preserving highlights and shadows of the latter.
     * </ul>
     */
    OVERLAY,

    
The darker of the color components from the two inputs are selected to produce the resulting color. The alpha components are blended according to the SRC_OVER equation. 

Notes:

    

  • This mode is commutative (ordering of inputs
does not matter).

  • This mode is the mathematical opposite of the LIGHTEN mode. 


/**
     * The darker of the color components from the two inputs are
     * selected to produce the resulting color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is commutative (ordering of inputs
     * does not matter).
     * <li>This mode is the mathematical opposite of
     * the {@link #LIGHTEN} mode.
     * </ul>
     */
    DARKEN,

    
The lighter of the color components from the two inputs are selected to produce the resulting color. The alpha components are blended according to the SRC_OVER equation. 

Notes:

    

  • This mode is commutative (ordering of inputs
does not matter).

  • This mode is the mathematical opposite of the DARKEN mode. 


/**
     * The lighter of the color components from the two inputs are
     * selected to produce the resulting color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is commutative (ordering of inputs
     * does not matter).
     * <li>This mode is the mathematical opposite of
     * the {@link #DARKEN} mode.
     * </ul>
     */
    LIGHTEN,

    
The bottom input color components are divided by the inverse of the top input color components to produce the resulting color. The alpha components are blended according to the SRC_OVER equation. 
/**
     * The bottom input color components are divided by the inverse
     * of the top input color components to produce the resulting color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     */
    COLOR_DODGE,

    
The inverse of the bottom input color components are divided by the top input color components, all of which is then inverted to produce the resulting color. The alpha components are blended according to the SRC_OVER equation. 
/**
     * The inverse of the bottom input color components are divided by
     * the top input color components, all of which is then inverted
     * to produce the resulting color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     */
    COLOR_BURN,

    
The input color components are either multiplied or screened, depending on the top input color. The alpha components are blended according to the SRC_OVER equation. 

Notes:

    

  • This mode is a combination of SCREEN and MULTIPLY, depending on the top input color. 
  • This mode is the mathematical opposite of the OVERLAY mode. 


/**
     * The input color components are either multiplied or screened,
     * depending on the top input color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is a combination of {@link #SCREEN} and
     * {@link #MULTIPLY}, depending on the top input color.
     * <li>This mode is the mathematical opposite of
     * the {@link #OVERLAY} mode.
     * </ul>
     */
    HARD_LIGHT,

    
The input color components are either darkened or lightened, depending on the top input color. The alpha components are blended according to the SRC_OVER equation. 

Notes:

    

  • This mode is similar to OVERLAY, but generally produces "lighter" results than OVERLAY. 


/**
     * The input color components are either darkened or lightened,
     * depending on the top input color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is similar to {@link #OVERLAY}, but generally
     * produces "lighter" results than {@code OVERLAY}.
     * </ul>
     */
    SOFT_LIGHT,

    
The darker of the color components from the two inputs are subtracted from the lighter ones to produce the resulting color. The alpha components are blended according to the SRC_OVER equation. 

Notes:

    

  • This mode is commutative (ordering of inputs
does not matter).

  • This mode can be used to invert parts of the bottom input
image, or to quickly compare two images (equal pixels will result
in black).

  • Rendering with a completely white top input inverts the
bottom input; rendering with a completely black top input produces
a result equivalent to the bottom input.



/**
     * The darker of the color components from the two inputs are
     * subtracted from the lighter ones to produce the resulting color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is commutative (ordering of inputs
     * does not matter).
     * <li>This mode can be used to invert parts of the bottom input
     * image, or to quickly compare two images (equal pixels will result
     * in black).
     * <li>Rendering with a completely white top input inverts the
     * bottom input; rendering with a completely black top input produces
     * a result equivalent to the bottom input.
     * </ul>
     */
    DIFFERENCE,

    
The color components from the two inputs are multiplied and doubled, and then subtracted from the sum of the bottom input color components, to produce the resulting color. The alpha components are blended according to the SRC_OVER equation. 

Notes:

    

  • This mode is commutative (ordering of inputs
does not matter).

  • This mode can be used to invert parts of the bottom input.

  • This mode produces results that are similar to those of DIFFERENCE, except with lower contrast. 
  • Rendering with a completely white top input inverts the
bottom input; rendering with a completely black top input produces
a result equivalent to the bottom input.



/**
     * The color components from the two inputs are multiplied and
     * doubled, and then subtracted from the sum of the bottom input
     * color components, to produce the resulting color.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     * <p>
     * Notes:
     * <ul>
     * <li>This mode is commutative (ordering of inputs
     * does not matter).
     * <li>This mode can be used to invert parts of the bottom input.
     * <li>This mode produces results that are similar to those of
     * {@link #DIFFERENCE}, except with lower contrast.
     * <li>Rendering with a completely white top input inverts the
     * bottom input; rendering with a completely black top input produces
     * a result equivalent to the bottom input.
     * </ul>
     */
    EXCLUSION,

    
The red component of the bottom input is replaced with the red component of the top input; the other color components are unaffected. The alpha components are blended according to the SRC_OVER equation. 
/**
     * The red component of the bottom input is replaced with the
     * red component of the top input; the other color components
     * are unaffected.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     */
    RED,

    
The green component of the bottom input is replaced with the green component of the top input; the other color components are unaffected. The alpha components are blended according to the SRC_OVER equation. 
/**
     * The green component of the bottom input is replaced with the
     * green component of the top input; the other color components
     * are unaffected.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     */
    GREEN,

    
The blue component of the bottom input is replaced with the blue component of the top input; the other color components are unaffected. The alpha components are blended according to the SRC_OVER equation. 
/**
     * The blue component of the bottom input is replaced with the
     * blue component of the top input; the other color components
     * are unaffected.
     * The alpha components are blended according
     * to the {@link #SRC_OVER} equation.
     */
    BLUE

}