de.lmu.ifi.dbs.elki.data.images

Class BlendComposite.OverlayBlendingContext

java.lang.Object

de.lmu.ifi.dbs.elki.data.images.BlendComposite.BlendingContext

de.lmu.ifi.dbs.elki.data.images.BlendComposite.OverlayBlendingContext

All Implemented Interfaces:

CompositeContext

Enclosing class:

BlendComposite

 class BlendComposite.OverlayBlendingContext
extends BlendComposite.BlendingContext

Blending context for a "overlay" blending.

Field Summary

Fields inherited from class de.lmu.ifi.dbs.elki.data.images.BlendComposite.BlendingContext

alpha, ialpha

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BlendComposite.OverlayBlendingContext(ColorModel srcColorModel, ColorModel dstColorModel, double alpha) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
protected int	blend(int sA, int sR, int sG, int sB, int dA, int dR, int dG, int dB) The actual blending function for two colors.

Methods inherited from class de.lmu.ifi.dbs.elki.data.images.BlendComposite.BlendingContext

compose, dispose, mixAlpha

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

BlendComposite.OverlayBlendingContext

protected BlendComposite.OverlayBlendingContext(ColorModel srcColorModel,
                                     ColorModel dstColorModel,
                                     double alpha)

Constructor.

Parameters:

srcColorModel - color model

dstColorModel - color model

alpha - Opacity value

Method Detail

blend

protected int blend(int sA,
        int sR,
        int sG,
        int sB,
        int dA,
        int dR,
        int dG,
        int dB)

Description copied from class: BlendComposite.BlendingContext

The actual blending function for two colors.

Overrides:

blend in class BlendComposite.BlendingContext

Parameters:

sA - source alpha component (0-255)

sR - source red component (0-255)

sG - source green component (0-255)

sB - source blue component (0-255)

dA - destination alpha component (0-255)

dR - destination red component (0-255)

dG - destination green component (0-255)

dB - destination blues component (0-255)

Returns:

Combined color in single-integer ARGB format (see BlendComposite.combineComponents(int, int, int, int) and BlendComposite.BlendingContext.mixAlpha(int, int, int, int, int, int, int, int) helper functions)