java.lang.Object
- ca.cgjennings.graphics.composites.AbstractARGBComposite
- - ca.cgjennings.graphics.composites.BlendMode

All Implemented Interfaces:

java.awt.Composite

Direct Known Subclasses:

MaskComposite
```
public abstract class BlendMode
extends AbstractARGBComposite
```
Composites that have similar effects to the layer blending modes in popular paint programs. This class itself is an abstract superclass of such composites; it provides concrete implementations for several common modes as immutable static members.
Note: Because this extends AbstractARGBComposite, it only supports 32-bit integer (A)RGB colour models. To avoid potential problems, do not apply this composite directly to a screen, printer, or other arbitrary graphics context. Instead, create a temporary image in TYPE_INT_RGB or TYPE_INT_ARGB mode, composite into this image, and then draw the image to the destination.

Author:

Chris Jennings

Field Summary

Fields
Modifier and Type	Field	Description
`static BlendMode`	`Add`	For each channel, `Add` takes the sum of the of the source and destination values.
`static BlendMode`	`Burn`	For each channel, `Burn` decreases the brightness of the destination relative to the brightness of the source.
`static BlendMode`	`Color`	`Color` mixes the hue and saturation of the source pixel but keeps the brightness of the destination.
`static BlendMode`	`ColorBurn`	For each channel, `ColorBurn` decreases the contrast of the destination relative to the brightness of the source.
`static BlendMode`	`ColorDodge`	For each channel, `ColorDodge` brightens the destination by decreasing the contrast relative to the source.
`static BlendMode`	`Darken`	For each channel, `Darken` chooses the darker of the source and destination values.
`static BlendMode`	`Difference`	For each channel, `Difference` takes the absolute value of the difference of the source and destination values.
`static BlendMode`	`Dodge`	For each channel, `Dodge` increases the brightness of the destination relative to the brightness of the source.
`static BlendMode`	`Exclusion`	`Exclusion` produces an effect similar to `Difference`, but lower in contrast.
`static BlendMode`	`Glow`	`Glow` has the same effect as `Reflect`, but is used when the source and destination are reversed.
`static BlendMode`	`HardLight`	For each channel, `HardLight` either multiplies or screens the values, depending on the source value.
`static BlendMode`	`HardMix`	For each channel, `HardMix` drives the value to either be fully off or fully on depending on the sum of the source and destination values.
`static BlendMode`	`Hue`	`Hue` mixes the hue of the source pixel but keeps the saturation and brightness of the destination.
`static BlendMode`	`Lighten`	For each channel, `Lighten` chooses the lighter of the source and destination values.
`static BlendMode`	`LinearBurn`	For each channel, `LinearBurn` darkens the destination by increasing the contrast relative to the source.
`static BlendMode`	`LinearDodge`	`LinearDodge` is the same as `Add`.
`static BlendMode`	`LinearLight`	For each channel, `LinearLight` either dodges or burns the values by adjusting brightness, depending on the source value.
`static BlendMode`	`Luminosity`	`Luminosity` mixes the brightness of the source pixel but keeps the hue and saturation of the destination.
`static BlendMode`	`Multiply`	For each channel, `Multiply` takes the product of the of the source and destination values.
`static BlendMode`	`Negation`	`Negation` produces a similar effect to `Difference`, but the values are inverted so that the destination becomes lighter rather than darker.
`static java.awt.AlphaComposite`	`Normal`	`Normal` mixes the source and destination using the weighted average `source/alpha + destination/(1-alpha)`.
`static BlendMode`	`Overlay`	For each channel, `Overlay` either multiplies or screens the values, depending on the destination.
`static BlendMode`	`PinLight`	For each channel, `PinLight` may replace the destination value with the source value.
`static BlendMode`	`Reflect`	`Reflect` lightens the destination based on the source using a non-linear function.
`static BlendMode`	`Saturation`	`Saturation` mixes the saturation of the source pixel but keeps the hue and brightness of the destination.
`static BlendMode`	`Screen`	For each channel, `Screen` takes the inverse product of the source and destination values.
`static BlendMode`	`SoftLight`	For each channel, `SoftLight` either dodges or burns the values, depending on the source value.
`static BlendMode`	`Subtract`	For each channel, `Subtract` subtracts the source value from the destination value.
`static BlendMode`	`VividLight`	For each channel, `VividLight` either dodges or burns the values by adjusting contrast, depending on the source value.

Fields inherited from class ca.cgjennings.graphics.composites.AbstractARGBComposite
alpha

Constructor Summary

Constructors
Constructor Description

BlendMode()

BlendMode(float alpha)

Method Summary
- Methods inherited from class ca.cgjennings.graphics.composites.AbstractARGBComposite
  compose, createContext, derive, getAlpha
- Methods inherited from class java.lang.Object
  clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - Normal
```
public static final java.awt.AlphaComposite Normal
```
    Normal mixes the source and destination using the weighted average source/alpha + destination/(1-alpha). Normal is identical to the AlphaComposite.SrcOver composite. It is included here for completeness.
  - Lighten
```
public static final BlendMode Lighten
```
    For each channel, Lighten chooses the lighter of the source and destination values.
  - Darken
```
public static final BlendMode Darken
```
    For each channel, Darken chooses the darker of the source and destination values.
  - Add
```
public static final BlendMode Add
```
    For each channel, Add takes the sum of the of the source and destination values. The result is always lighter unless the destination is white or the source is black. Add is sometimes called Linear Dodge.
  - LinearDodge
```
public static final BlendMode LinearDodge
```
    LinearDodge is the same as Add.
  - Subtract
```
public static final BlendMode Subtract
```
    For each channel, Subtract subtracts the source value from the destination value.
  - Difference
```
public static final BlendMode Difference
```
    For each channel, Difference takes the absolute value of the difference of the source and destination values.
  - Exclusion
```
public static final BlendMode Exclusion
```
    Exclusion produces an effect similar to Difference, but lower in contrast.
  - Negation
```
public static final BlendMode Negation
```
    Negation produces a similar effect to Difference, but the values are inverted so that the destination becomes lighter rather than darker.
  - Multiply
```
public static final BlendMode Multiply
```
    For each channel, Multiply takes the product of the of the source and destination values. The result is always darker unless the destination is black.
  - Screen
```
public static final BlendMode Screen
```
    For each channel, Screen takes the inverse product of the source and destination values. The result is always lighter unless the destination is white. Visually, the effect is comparable to projecting one photographic slide over another.
  - Burn
```
public static final BlendMode Burn
```
    For each channel, Burn decreases the brightness of the destination relative to the brightness of the source.
  - ColorBurn
```
public static final BlendMode ColorBurn
```
    For each channel, ColorBurn decreases the contrast of the destination relative to the brightness of the source.
  - LinearBurn
```
public static final BlendMode LinearBurn
```
    For each channel, LinearBurn darkens the destination by increasing the contrast relative to the source.
  - Dodge
```
public static final BlendMode Dodge
```
    For each channel, Dodge increases the brightness of the destination relative to the brightness of the source.
  - ColorDodge
```
public static final BlendMode ColorDodge
```
    For each channel, ColorDodge brightens the destination by decreasing the contrast relative to the source.
  - Overlay
```
public static final BlendMode Overlay
```
    For each channel, Overlay either multiplies or screens the values, depending on the destination. The effect is to retain shadows from the destination while taking on colour from the source.
  - HardLight
```
public static final BlendMode HardLight
```
    For each channel, HardLight either multiplies or screens the values, depending on the source value. Visually, the effect is similar to shining a hard spotlight over the destination.
  - SoftLight
```
public static final BlendMode SoftLight
```
    For each channel, SoftLight either dodges or burns the values, depending on the source value. Visually, the effect is similar to shining a diffuse spotlight over the destination.
  - LinearLight
```
public static final BlendMode LinearLight
```
    For each channel, LinearLight either dodges or burns the values by adjusting brightness, depending on the source value. Visually, the effect is similar to shining a diffuse spotlight over the destination.
  - PinLight
```
public static final BlendMode PinLight
```
    For each channel, PinLight may replace the destination value with the source value. When the source value is light, the darker of the source and destination is selected. When the source value is dark, the lighter of the source and destination is selected.
  - VividLight
```
public static final BlendMode VividLight
```
    For each channel, VividLight either dodges or burns the values by adjusting contrast, depending on the source value. Visually, the effect is similar to shining a diffuse spotlight over the destination.
  - HardMix
```
public static final BlendMode HardMix
```
    For each channel, HardMix drives the value to either be fully off or fully on depending on the sum of the source and destination values. Thus, each pixel will be one of black, red, green, blue, yellow, cyan, magenta, or white.
  - Reflect
```
public static final BlendMode Reflect
```
    Reflect lightens the destination based on the source using a non-linear function. It is useful for adding shine or highlights to the destination.
  - Glow
```
public static final BlendMode Glow
```
    Glow has the same effect as Reflect, but is used when the source and destination are reversed.
  - Hue
```
public static final BlendMode Hue
```
    Hue mixes the hue of the source pixel but keeps the saturation and brightness of the destination.
  - Saturation
```
public static final BlendMode Saturation
```
    Saturation mixes the saturation of the source pixel but keeps the hue and brightness of the destination.
  - Color
```
public static final BlendMode Color
```
    Color mixes the hue and saturation of the source pixel but keeps the brightness of the destination.
  - Luminosity
```
public static final BlendMode Luminosity
```
    Luminosity mixes the brightness of the source pixel but keeps the hue and saturation of the destination.
- Constructor Detail
  - BlendMode
```
public BlendMode()
```
  - BlendMode
```
public BlendMode(float alpha)
```

Constructors
Constructor	Description
`BlendMode()`
`BlendMode(float alpha)`

Class BlendMode

Field Summary

Fields inherited from class ca.cgjennings.graphics.composites.AbstractARGBComposite

Constructor Summary

Method Summary

Methods inherited from class ca.cgjennings.graphics.composites.AbstractARGBComposite

Methods inherited from class java.lang.Object

Field Detail

Normal

Lighten

Darken

Add

LinearDodge

Subtract

Difference

Exclusion

Negation

Multiply

Screen

Burn

ColorBurn

LinearBurn

Dodge

ColorDodge

Overlay

HardLight

SoftLight

LinearLight

PinLight

VividLight

HardMix

Reflect

Glow

Hue

Saturation

Color

Luminosity

Constructor Detail

BlendMode

BlendMode