ViewCurve Object Preview

Derived from: Base Object
Defined in namespace "adsk::drawing" and the header file is <Drawing/Sheet/ViewCurve.h>

PreviewThis 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.

Description

Represents a single curve within a drawing view that resulted from the model (a projected model edge or a sketch entity). A ViewCurve is read-only; it is used for selection, dimensioning, and as the geometric anchor for annotations.

Methods

Name Description
classType

Static function that all classes support that returns the type of the class as a string. The returned string matches the string returned by the objectType property. For example if you have a reference to an object and you want to check if it's a SketchLine you can use myObject.objectType == fusion.SketchLine.classType().

Properties

Name Description
centerPoint Returns the center point of this curve, expressed in sheet space, when the curve is an arc (ArcViewCurveType), a circle (CircleViewCurveType), or an arc-like spline (SplineViewCurveType). Returns null for every other curve type, including ellipses, lines, and polylines.
endPoint Returns the end point of this curve, expressed in sheet space. For a closed curve (for example a projected circular edge) the start and end points coincide.
isValid Indicates if this object is still valid, i.e. hasn't been deleted or some other action done to invalidate the reference.
midPoint Returns the midpoint of this curve, expressed in sheet space, when the curve is a line (LineViewCurveType). The midpoint is evaluated at the middle of the curve's parameter range. Returns null for every other curve type, including arcs, circles, ellipses, splines, and polylines.
objectType This property is supported by all objects in the API and returns a string that contains the full name (namespace::objecttype) describing the type of the object.

It's often useful to use this in combination with the classType method to see if an object is a certain type. For example: if obj.objectType == adsk.core.Point3D.classType():
startPoint Returns the start point of this curve, expressed in sheet space. For a closed curve (for example a projected circular edge) the start and end points coincide.
type Returns the geometric type of this curve (line, arc, circle, ellipse, spline, or polyline). Returns UnknownViewCurveType if the type cannot be determined.

Accessed From

DatumIdentifierInput.viewCurve, DrawingSymbolInput.viewCurve, EdgeSymbolInput.viewCurve, FeatureControlFrameInput.viewCurve, TaperSlopeSymbolInput.attachementCurve, TaperSlopeSymbolInput.viewCurve, ViewCurves.item

Version

Introduced in version October 2026