程序包 ohos.agp.render

类 SweepShader

java.lang.Object

ohos.agp.render.Shader

ohos.agp.render.SweepShader

public class SweepShader
extends Shader

Represents a shader that shades colors in sweep manner around a center point.

This class inherits from Shader. You can use the methods in this class to configure the position of each color.

从以下版本开始:

3

嵌套类概要

从类继承的嵌套类/接口 ohos.agp.render.Shader

Shader.TileMode

字段概要

字段

限定符和类型	字段	说明
float[]	positions	Stores the positions of all colors in the Shader#shaderColors array.
float	xCoordinate	Indicates the X-axis coordinate of the center point of the SweepShader.
float	yCoordinate	Indicates the Y-axis coordinate of the center point of the SweepShader.

从类继承的字段 ohos.agp.render.Shader

intColors, mTileMode, shaderColors

构造器概要

构造器

构造器	说明
SweepShader()	Default constructor used to create a SweepShader.
SweepShader(float xCoor, float yCoor, Color[] newColors, float[] newPositions)	A constructor used to create a SweepShader based on the specified center point, colors, and color positions.

方法概要

限定符和类型	方法	说明
protected float[]	getShaderPositions()	Obtains the positions corresponding to the shading colors of a sweep shader.
protected float	getShaderXCoordinate()	Obtains the X-axis coordinate of the center point of a sweep shader.
protected float	getShaderYCoordinate()	Obtains the Y-axis coordinate of the center point of a sweep shader.

从类继承的方法 java.lang.Object

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

从类继承的方法 ohos.agp.render.Shader

getShaderColors, getTileMode, setShaderMatrix

字段详细资料

positions

public float[] positions

Stores the positions of all colors in the Shader#shaderColors array.

Color positions values monotonically increase from 0 to 1.0. If the values do not increase monotonically, the drawing result may be unexpected. If the positions parameter is null, the colors will be evenly shaded.

从以下版本开始:

3

xCoordinate

public float xCoordinate

Indicates the X-axis coordinate of the center point of the SweepShader.

从以下版本开始:

3

yCoordinate

public float yCoordinate

Indicates the Y-axis coordinate of the center point of the SweepShader.

构造器详细资料

SweepShader

public SweepShader()

Default constructor used to create a SweepShader.

Calling this constructor will automatically invoke SweepShader#SweepShader(float,float,Color[],float[]) to create a sweep shader.

从以下版本开始:

3

SweepShader

public SweepShader(float xCoor,
                   float yCoor,
                   Color[] newColors,
                   float[] newPositions)

A constructor used to create a SweepShader based on the specified center point, colors, and color positions.

参数:

xCoor - Indicates the X-axis coordinate of the center point.

yCoor - Indicates the Y-axis coordinate of the center point.

newColors - Indicates the array of sweep shading colors.

newPositions - Indicates the positions of all colors in newColors. This parameter can be null.

从以下版本开始:

3

方法详细资料

getShaderXCoordinate

protected float getShaderXCoordinate()

Obtains the X-axis coordinate of the center point of a sweep shader.

返回:

Returns the X-axis coordinate of the center point of the sweep shader.

从以下版本开始:

3

getShaderYCoordinate

protected float getShaderYCoordinate()

Obtains the Y-axis coordinate of the center point of a sweep shader.

返回:

Returns the Y-axis coordinate of the center point of the sweep shader.

从以下版本开始:

3

getShaderPositions

protected float[] getShaderPositions()

Obtains the positions corresponding to the shading colors of a sweep shader.

返回:

Returns the positions corresponding to the shading colors of the sweep shader.

从以下版本开始:

3