Arc3D Object

Derived from: Curve3D Object
Defined in namespace "adsk::core" and the header file is <Core/Geometry/Arc3D.h>

Description

Transient 3D arc. A transient arc is not displayed or saved in a document. Transient 3D arcs are used as a wrapper to work with raw 3D arc information. They are created statically using one of the create methods of the Arc3D class.

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().
copy Creates and returns an independent copy of this Arc3D object.
createByCenter Creates a transient 3D arc object by specifying a center point and radius.
createByThreePoints Creates a transient 3D arc by specifying 3 points. A transient arc is not displayed or saved in a document. Transient arcs are used as a wrapper to work with raw 3D arc information.
getData Gets all of the data defining the arc.
set Sets all of the data defining the arc.
setAxes Sets the normal and reference vectors of the arc.
transformBy Transforms this curve in 3D space.

Properties

Name Description
asNurbsCurve Returns a NURBS curve that is geometrically identical to the arc.
center Gets and sets the center position of the arc.
curveType Returns the type of geometry this curve represents.
endAngle Gets and sets the end angle of the arc in radians. This angle is measured from the reference vector using the right hand rule around the normal vector.
endPoint Gets the end point of the arc.
evaluator Returns an evaluator object that lets you perform additional evaluations on the curve.
isValid Indicates if this object is still valid, i.e. hasn't been deleted or some other action done to invalidate the reference.
normal Gets and sets the normal of the arc.
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():
radius Gets and sets the radius of the arc.
referenceVector Gets and sets the reference vector of the arc.
startAngle Gets and sets the start angle of the arc in radians. This angle is measured from the reference vector using the right hand rule around the normal vector.
startPoint Gets the start point of the arc.

Accessed From

Arc3D.copy, Arc3D.createByCenter, Arc3D.createByThreePoints, SketchArc.geometry, SketchArc.worldGeometry

Samples

Name Description
Get Circle and Arc Data from Edge API Sample Display the arc and circle geometric information from a selected circular edge.

Version

Introduced in version August 2014