📄 threejs/Core/Extras/ArcCurve

File: ArcCurve.md | Updated: 11/15/2025


title: ArcCurve category: Core layout: docs

ArcCurve

A curve representing an arc.

Constructor

new ArcCurve( aX : number, aY : number, aRadius : number, aStartAngle : number, aEndAngle : number, aClockwise : boolean )

Constructs a new arc curve.

aX | The X center of the ellipse. Default is 0.
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aY | The Y center of the ellipse. Default is 0.
aRadius | The radius of the ellipse in the x direction. Default is 1.
aStartAngle | The start angle of the curve in radians starting from the positive X axis. Default is 0.
aEndAngle | The end angle of the curve in radians starting from the positive X axis. Default is Math.PI*2.
aClockwise | Whether the ellipse is drawn clockwise or not. Default is false.

Properties

.isArcCurve : boolean (readonly)

This flag can be used for type testing.

Default is true.

Source

src/extras/curves/ArcCurve.js