Namespace: Autodesk.Revit.DB Class: Arc

Arc.Create(XYZ, Double, Double, Double, XYZ, XYZ)

Method

Description:
Creates a new geometric arc object based on center, radius, unit vectors, and angles.

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

Syntax

public static Arc Create(
	XYZ center,
	double radius,
	double startAngle,
	double endAngle,
	XYZ xAxis,
	XYZ yAxis
)

Public Shared Function Create ( 
	center As XYZ,
	radius As Double,
	startAngle As Double,
	endAngle As Double,
	xAxis As XYZ,
	yAxis As XYZ
) As Arc

public:
static Arc^ Create(
	XYZ^ center, 
	double radius, 
	double startAngle, 
	double endAngle, 
	XYZ^ xAxis, 
	XYZ^ yAxis
)

static member Create : 
        center : XYZ * 
        radius : float * 
        startAngle : float * 
        endAngle : float * 
        xAxis : XYZ * 
        yAxis : XYZ -> Arc

Examples

// Create a new arc defined by its center, radios, angles and 2 axes
double radius = 10;
double startAngle = 0;      // In radian
double endAngle = Math.PI;        // In radian
XYZ center = new XYZ(5, 0, 0);
XYZ xAxis = new XYZ(1, 0, 0);   // The x axis to define the arc plane. Must be normalized
XYZ yAxis = new XYZ(0, 1, 0);   // The y axis to define the arc plane. Must be normalized

Arc arc = Arc.Create(center, radius, startAngle, endAngle, xAxis, yAxis);

' Create a new arc defined by its center, radios, angles and 2 axes
Dim radius As Double = 10
Dim startAngle As Double = 0
' In radian
Dim endAngle As Double = Math.PI
' In radian
Dim center As New XYZ(5, 0, 0)
Dim xAxis As New XYZ(1, 0, 0)
' The x axis to define the arc plane. Must be normalized
Dim yAxis As New XYZ(0, 1, 0)
' The y axis to define the arc plane. Must be normalized
Dim arc__1 As Arc = Arc.Create(center, radius, startAngle, endAngle, xAxis, yAxis)

Parameters

Parameter	Type	Description
center	XYZ	The center of the arc.
radius	Double	The radius of the arc.
startAngle	Double	The start angle of the arc (in radians).
endAngle	Double	The end angle of the arc (in radians).
xAxis	XYZ	The x axis to define the arc plane. Must be normalized.
yAxis	XYZ	The y axis to define the arc plane. Must be normalized.

Return Value

Type	Description
Arc	The new arc.

Exceptions

Exception	Condition
ArgumentNullException	A non-optional argument was NULL
ArgumentOutOfRangeException	xAxis is not length 1.0. -or- yAxis is not length 1.0. -or- The given value for radius must be between 0 and 30000 feet.
ArgumentsInconsistentException	The vectors xAxis and yAxis are not perpendicular. -or- Start angle must be less than end angle. -or- Curve length is too small for Revit's tolerance (as identified by Application.ShortCurveTolerance).