程序包 ohos.agp.render

类 Arc

java.lang.Object

ohos.agp.render.Arc

public class Arc
extends Object

Describes parameters for drawing an arc.

The parameters for drawing an arc include the start angle, sweep angle, and whether to draw the lines from both end points of the arc to its center.

从以下版本开始:

1

构造器概要

构造器

构造器	说明
Arc()	Default constructor used to create an Arc instance.
Arc(float startAngle, float sweepAngle, boolean useCenter)	Parameterized constructor used to create an Arc instance.

方法概要

限定符和类型	方法	说明
float	getStartAngle()	Obtains the start angle of an arc.
float	getSweepAngle()	Obtains the sweep angle of an arc.
boolean	getUseCenter()	Obtains the value of the useCenter attribute, which indicates whether to draw the lines from both end points of the arc to its center.
void	setArc(float startAngle, float sweepAngle, boolean useCenter)	Changes the parameters of an arc.

从类继承的方法 java.lang.Object

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

构造器详细资料

Arc

public Arc()

Default constructor used to create an Arc instance.

Arc

public Arc(float startAngle,
           float sweepAngle,
           boolean useCenter)

Parameterized constructor used to create an Arc instance.

The startAngle, sweepAngle, and useCenter parameters can be specified.

参数:

startAngle - Indicates the start angle of the arc, which zero degree is at three o'clock.

sweepAngle - Indicates the sweep angle of the arc, which is clockwise rotation.

useCenter - Indicates whether to draw the lines from both end points of the arc to its center.

方法详细资料

setArc

public void setArc(float startAngle,
                   float sweepAngle,
                   boolean useCenter)

Changes the parameters of an arc.

The startAngle, sweepAngle, and useCenter parameters can be specified.

参数:

startAngle - Indicates the start angle of the arc.

sweepAngle - Indicates the sweep angle of the arc.

useCenter - Indicates whether to draw the lines from both end points of the arc to its center.

getSweepAngle

public float getSweepAngle()

Obtains the sweep angle of an arc.

返回:

Returns the sweep angle of the arc.

getStartAngle

public float getStartAngle()

Obtains the start angle of an arc.

返回:

Returns the start angle of the arc.

getUseCenter

public boolean getUseCenter()

Obtains the value of the useCenter attribute, which indicates whether to draw the lines from both end points of the arc to its center.

返回:

Returns true if the lines are drawn; returns false otherwise.