Namespace: Autodesk.Revit.DB Class: Ellipse

Ellipse.CreateCurve

Method

Description:
Creates a new geometric ellipse or elliptical arc object.

Remarks:
If the angle range is equal to or greater than 2 * PI, the curve will be automatically converted to an unbounded ellipse. If xRadius and yRadius are almost equal, the curve will be returned as an arc.

Syntax

public static Curve CreateCurve(
	XYZ center,
	double xRadius,
	double yRadius,
	XYZ xAxis,
	XYZ yAxis,
	double startParameter,
	double endParameter
)

Public Shared Function CreateCurve ( 
	center As XYZ,
	xRadius As Double,
	yRadius As Double,
	xAxis As XYZ,
	yAxis As XYZ,
	startParameter As Double,
	endParameter As Double
) As Curve

public:
static Curve^ CreateCurve(
	XYZ^ center, 
	double xRadius, 
	double yRadius, 
	XYZ^ xAxis, 
	XYZ^ yAxis, 
	double startParameter, 
	double endParameter
)

static member CreateCurve : 
        center : XYZ * 
        xRadius : float * 
        yRadius : float * 
        xAxis : XYZ * 
        yAxis : XYZ * 
        startParameter : float * 
        endParameter : float -> Curve

Parameters

Parameter	Type	Description
center	XYZ	The center.
xRadius	Double	The x vector radius of the ellipse.
yRadius	Double	The y vector radius of the ellipse.
xAxis	XYZ	The x axis to define the ellipse plane. Must be normalized.
yAxis	XYZ	The y axis to define the ellipse plane. Must be normalized.
startParameter	Double	The raw parameter value at the start of the ellipse.
endParameter	Double	The raw parameter value at the end of the ellipse.

Return Value

Type	Description
Curve	The new ellipse or elliptical arc.

Exceptions

Exception	Condition
ArgumentNullException	A non-optional argument was NULL
ArgumentOutOfRangeException	The given value for xRadius must be greater than 0 and no more than 30000 feet. -or- The given value for yRadius must be greater than 0 and no more than 30000 feet. -or- xAxis is not length 1.0. -or- yAxis is not length 1.0.
ArgumentsInconsistentException	The vectors xAxis and yAxis are not perpendicular. -or- Start parameter must be less than end parameter. -or- Curve length is too small for Revit's tolerance (as identified by Application.ShortCurveTolerance).