Creates a new geometric arc object based on plane, radius, and angles.

Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 24.0.0.0 (24.0.0.0)
Since: 2014

Syntax

C#
`public static Arc Create( Plane plane, double radius, double startAngle, double endAngle )`

Visual Basic
`Public Shared Function Create ( _ plane As Plane, _ radius As Double, _ startAngle As Double, _ endAngle As Double _ ) As Arc`

Visual C++
`public: static Arc^ Create( Plane^ plane, double radius, double startAngle, double endAngle )`

Parameters

plane: Type: Autodesk.Revit.DBPlane
The plane which the arc resides. The plane's origin is the center of the arc.

radius: Type: SystemDouble
The radius of the arc.

startAngle: Type: SystemDouble
The start angle of the arc (in radians).

endAngle: Type: SystemDouble
The end angle of the arc (in radians).

Return Value

The new arc.

Remarks

If the angle range is equal to or greater than 2 * PI, the curve will be automatically converted to an unbounded circle.

Examples

CopyC#

Arc CreateArcByGivingPlane(Autodesk.Revit.ApplicationServices.Application application, Plane plane)
{
    // Create an arc which is placed on the plane and whose center is the plane's origin
    double radius = 10;
    double startAngle = 0;      // The unit is radian
    double endAngle = 2 * Math.PI;        // this arc will be a circle
    return Arc.Create(plane, radius, startAngle, endAngle);
}

CopyVB.NET

Private Function CreateArcByGivingPlane(application As Autodesk.Revit.ApplicationServices.Application, plane As Plane) As Arc
    ' Create an arc which is placed on the plane and whose center is the plane's origin
    Dim radius As Double = 10
    Dim startAngle As Double = 0
    ' The unit is radian
    Dim endAngle As Double = 2 * Math.PI
    ' this arc will be a circle
    Return Arc.Create(plane, radius, startAngle, endAngle)
End Function

Exceptions

Exception	Condition
Autodesk.Revit.ExceptionsArgumentNullException	A non-optional argument was NULL
Autodesk.Revit.ExceptionsArgumentOutOfRangeException	The given value for radius must be greater than 0 and no more than 30000 feet.
Autodesk.Revit.ExceptionsArgumentsInconsistentException	Start angle must be less than end angle. -or- Curve length is too small for Revit's tolerance (as identified by Application.ShortCurveTolerance).

Create Method (Plane, Double, Double, Double)