Package limn.graphics

Enum Class BlendMode

java.lang.Object

java.lang.Enum<BlendMode>

limn.graphics.BlendMode

All Implemented Interfaces:

Serializable, Comparable<BlendMode>, Constable

public enum BlendMode
extends Enum<BlendMode>

How subsequent Canvas painting combines with what is already on the target. Part of the canvas state (Canvas.setBlendMode(limn.graphics.BlendMode)), so it is saved/restored with Canvas.save()/Canvas.restore() and applies to every primitive: shapes, text, images.

The pipeline is premultiplied-alpha end to end; each mode maps to a single fixed blend equation, and switching modes mid-frame is a batch break (one extra draw call), so group same-mode painting where possible.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
ADDITIVE	Additive: source adds to the destination, for light, glow, fire, laser and particle effects that brighten whatever they overlap.
MULTIPLY	Multiply: source darkens the destination, for shadows, vignettes, tint layers.
NORMAL	Source-over: ordinary painting, the default.

Method Summary

Modifier and Type	Method	Description
static BlendMode	valueOf(String name)	Returns the enum constant of this class with the specified name.
static BlendMode[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

NORMAL

public static final BlendMode NORMAL

Source-over: ordinary painting, the default.

ADDITIVE

public static final BlendMode ADDITIVE

Additive: source adds to the destination, for light, glow, fire, laser and particle effects that brighten whatever they overlap. Black is neutral; overlapping strokes accumulate toward white.

MULTIPLY

public static final BlendMode MULTIPLY

Multiply: source darkens the destination, for shadows, vignettes, tint layers. White is neutral; overlapping strokes accumulate toward black.

Method Details

values

public static BlendMode[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static BlendMode valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null