Package icyllis.arc3d.sketch.shaders

Class ColorShader

java.lang.Object

icyllis.arc3d.sketch.shaders.ColorShader

All Implemented Interfaces:

RefCounted, Shader

public final class ColorShader
extends Object
implements Shader

A Shader that represents a single color. In general, this effect can be accomplished by just using the color field on the paint, but if an actual shader object is needed, this provides that feature. Note: like all shaders, at draw time the paint's alpha will be respected, and is applied to the specified color.

Field Summary

Fields inherited from interface icyllis.arc3d.sketch.shaders.Shader

LOCAL_MATRIX_AFTER, LOCAL_MATRIX_BEFORE, LOCAL_MATRIX_REPLACE, TILE_MODE_CLAMP, TILE_MODE_DECAL, TILE_MODE_MIRROR, TILE_MODE_REPEAT

Constructor Summary

Constructors

Constructor	Description
ColorShader(float r, float g, float b, float a)	Create a ColorShader wrapping the given sRGB color.
ColorShader(int color)	Create a ColorShader wrapping the given sRGB color.

Method Summary

Modifier and Type	Method	Description
float @NonNull []	getColor()
boolean	isConstant()	Returns true if the shader is guaranteed to produce only a single color.
boolean	isOpaque()	Returns true if the shader is guaranteed to produce only opaque colors, subject to the Paint using the shader to apply an opaque alpha value.
static @SharedPtr @Nullable Shader	make(float @NonNull [] color, @Nullable ColorSpace space)
static @SharedPtr @Nullable Shader	make(float r, float g, float b, float a, @Nullable ColorSpace space)

Methods inherited from class java.lang.Object

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

Methods inherited from interface icyllis.arc3d.sketch.shaders.Shader

isTriviallyCounted, makeWithLocalMatrix, ref, unref

Constructor Details

ColorShader

public ColorShader(int color)

Create a ColorShader wrapping the given sRGB color.

ColorShader

@VisibleForTesting
public ColorShader(float r,
 float g,
 float b,
 float a)

Create a ColorShader wrapping the given sRGB color.

Method Details

make

@Contract(pure=true)
@SharedPtr
public static @SharedPtr @Nullable Shader make(@Size(4L)
 float @NonNull [] color,
 @Nullable ColorSpace space)

make

@Contract(pure=true)
@SharedPtr
public static @SharedPtr @Nullable Shader make(float r,
 float g,
 float b,
 float a,
 @Nullable ColorSpace space)

isOpaque

public boolean isOpaque()

Description copied from interface: Shader

Returns true if the shader is guaranteed to produce only opaque colors, subject to the Paint using the shader to apply an opaque alpha value. Subclasses should override this to allow some optimizations.

Specified by:

isOpaque in interface Shader

isConstant

public boolean isConstant()

Returns true if the shader is guaranteed to produce only a single color. Subclasses can override this to allow loop-hoisting optimization.

Specified by:

isConstant in interface Shader

getColor

@Contract(value=" -> new",
          pure=true)
public float @NonNull [] getColor()

Returns:

a copy of non-premultiplied color.