Ellipse.CreateCurve

Public Class

Creates a new geometric ellipse or elliptical arc object.

Namespace: Autodesk.Revit.DB

Assembly: RevitAPI (in RevitAPI.dll) Version: 25.0.0.0 (25.0.0.0)

Syntax

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

Parameters

center XYZ

The center.

xRadiusDouble

The x vector radius of the ellipse.

yRadiusDouble

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.

startParameterDouble

The raw parameter value at the start of the ellipse.

endParameterDouble

The raw parameter value at the end of the ellipse.

Return Value

Curve
The new ellipse or elliptical arc.

Exceptions

Exception

Condition

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ArgumentNullException

A non-optional argument was NULL

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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.

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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).

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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.