Arcs.addByThreePoints Method

Parent Object: Arcs

Preview This functionality is provided as a preview of intended future API capabilities. You are encouraged to use it and report any problems or suggestions using the Fusion API and Scripts forum.

Because this is a preview of future functionality, there is the possibility that it will change, which will possibly break any existing programs that use this functionality. Because of that, you should never deliver any programs that use any preview capabilities. For a distributed program, you should wait until it has moved from preview to released state.

Defined in namespace "adsk::drawing" and the header file is <Drawing/Sketch/Arcs.h>

Description

Creates a new arc in the sketch that passes through three points: a start point, a point on the arc, and an end point. Mirrors the 3-Point Arc drawing command.

"arcs_var" is a variable referencing an Arcs object.

returnValue = arcs_var.addByThreePoints(startPoint, pointOnArc, endPoint)

"arcs_var" is a variable referencing an Arcs object.

#include <Drawing/Sketch/Arcs.h>

returnValue = arcs_var->addByThreePoints(startPoint, pointOnArc, endPoint);

"arcs_var" is a variable referencing an Arcs object.

returnValue = arcs_var.addByThreePoints(startPoint, pointOnArc, endPoint);

Return Value

Type	Description
Arc	Returns the newly created Arc, or null if the operation failed.

Parameters

Name	Type	Description
startPoint	Point2D	The start point of the arc. Coordinates are in drawing length units (millimeters when the drawing standard includes ISO; inches when the standard is ASME without ISO). Build the point with core.Point2D.create(x, y).
pointOnArc	Point2D	A point the arc passes through, between the start and end points.
endPoint	Point2D	The end point of the arc.

Version

Introduced in version September 2026