Arc

Premium

Represents an arc with a set center, direction, angular range, and X/Y radius.

Name	Type	Default	Description
anticlockwise	boolean		The anticlockwise flag of the arc.
center	Point		The center point of the arc.
endAngle	number		Gets the end angle of the arc in decimal degrees. Measured in a clockwise direction with 0 (zero) pointing "right".
radiusX	number		Gets the X radius of the arc.
radiusY	number		Gets the Y radius of the arc.
startAngle	number		Gets the start angle of the arc in decimal degrees. Measured in a clockwise direction with 0 (zero) pointing "right".

Constructors

Arc

(center: number[] | Point, options?: ArcOptions)

Creates a new Arc instance.

Parameters

center

number[] | Point

The center point of the arc.

options?

ArcOptions

The options that describe the arc.

Methods

addObserver
Adds an observer to be notified for changes.
Parameters observer GeometryObserver The observer to add.
Returns Arc The current Arc instance.

bbox
Returns the bounding box of this arc after applying the specified transformation matrix.
Parameters matrix Matrix The transformation matrix to apply.
Returns Rect The bounding box after applying the transformation matrix.

getAnticlockwise
Gets the anticlockwise flag of the arc.
Returns boolean The anticlockwise flag of the arc.

getCenter
Gets the center location of the arc.
Returns Point The location of the arc center.

getEndAngle
Gets the end angle of the arc in decimal degrees. Measured in a clockwise direction with 0 (zero) pointing "right".
Returns number The end angle of the arc.

getRadiusX
Gets the X radius of the arc.
Returns number The X radius of the arc.

getRadiusY
Gets the Y radius of the arc.
Returns number The Y radius of the arc.

getStartAngle
Gets the start angle of the arc in decimal degrees. Measured in a clockwise direction with 0 (zero) pointing "right".
Returns number The start angle of the arc.

observers
Returns the list of observers.
Returns GeometryObserver[] The current observers.

pointAt
Gets the location of a point on the circumference of the arc at a given angle.
Parameters angle number The angle in decimal degrees. Measured in a clockwise direction with 0 (zero) pointing "right". Negative values or values greater than 360 are normalized.
Returns Point The point on the circumference of the arc.

removeObserver
Stops notifying the specified observer for changes.
Parameters observer GeometryObserver The observer to remove.
Returns Arc The current Arc instance.

resume
Resumes the notification to all observers for changes.
Returns Arc The current Arc instance.

setAnticlockwise
Sets the anticlockwise flag of the arc.
Parameters value boolean The new anticlockwise value.
Returns Arc The current arc instance.

setCenter
Sets the center location of the arc.
Parameters value number[] | Point The new arc center.
Returns Arc The current Arc instance.

setEndAngle
Sets the end angle of the arc in decimal degrees. Measured in a clockwise direction with 0 (zero) pointing "right".
Parameters value number The new end angle of the arc.
Returns Arc The current Arc instance.

setRadiusX
Sets the X radius of the arc.
Parameters value number The new X radius of the arc.
Returns Arc The current Arc instance.

setRadiusY
Sets the Y radius of the arc.
Parameters value number The new Y radius of the arc.
Returns Arc The current Arc instance.

setStartAngle
Sets the start angle of the arc in decimal degrees. Measured in a clockwise direction with 0 (zero) pointing "right".
Parameters value number The new start angle of the arc.
Returns Arc The current Arc instance.

suspend
Suspends the change notifications to all observers.
Returns Arc The current Arc instance.