Revit 2025.3 API
EdgeAs |
Returns a curve that corresponds to this edge as oriented in its topological direction on the specified face.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 25.3.0.0 (25.3.0.0)
Syntax
public Curve AsCurveFollowingFace( Face faceForDir )
Public Function AsCurveFollowingFace ( faceForDir As Face ) As Curve
public: Curve^ AsCurveFollowingFace( Face^ faceForDir )
member AsCurveFollowingFace : faceForDir : Face -> Curve
Parameters
- faceForDir Face
- Specifies the face, on which the curve will follow the topological direction of the edge.
Return Value
CurveIt can be an Arc, Line, or HermiteSpline.

Exception | Condition |
---|---|
ArgumentNullException | Thrown when the specified faceForDir is . |
ArgumentException | Thrown when the specified faceForDir is not one of the faces for this edge. |

Evaluating the edge using EvaluateOnFace gives the same result as evaluating the curve returned by AsCurveFollowingFace with a normalized
curve parameter. When a Hermite spline is returned, the two evaluated points will be approximately equal.
See Also