NurbsSurfaceData

Public Class

A class used to represent the definition of a NURBS surface.

Inheritance Hierarchy

System.Object
Autodesk.Revit.DB.NurbsSurfaceData

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

Syntax

public class NurbsSurfaceData : IDisposable

The NurbsSurfaceData type exposes the following members.

Constructors

Name

Description

Public Method
NurbsSurfaceData

Copy constructor.

Properties

Name

Description

Public Property

DegreeU

The degree of the spline in the u-direction.

Public Property

DegreeV

The degree of the spline in the v-direction.

Public Property

IsRational

Tells if the spline is rational or not. If it is true (rational), then the NURBS is a piecewise rational polynomial function. If it is false (non-rational), then the NURBS is a piecewise polynomial function.

Public Property
IsValidObject

Specifies whether the .NET object represents a valid Revit entity.

Public Property

ReverseOrientation

If true, the surface’s orientation is opposite to the canonical parametric orientation, otherwise it is the same. The canonical parametric orientation is a counter-clockwise sense of rotation in the uv-parameter plane. Extrinsically, the oriented normal vector for the canonical parametric orientation points in the direction of the cross product dS/du x dS/dv, which S(u, v) is the parameterized surface.

Methods

Name

Description

Public Method
Static Member

Create

Construct NurbsSurfaceData based on NURBS surface data, where the weights are supplied. The NURBS surface will be (piecewise) polynomial if all the weights are equal, rational if not. Note: A rational polynomial is a quotient of two polynomials; this includes a polynomial, which can be thought of as a quotient with denominator equal to 1.

Public Method

Dispose

Releases all resources used by the NurbsSurfaceData

Public Method

Equals

Determines whether the specified object is equal to the current object.
(Inherited from Object)

Public Method

GetControlPoints

Get the list of control points.

Public Method

GetHashCode

Serves as the default hash function.
(Inherited from Object)

Public Method

GetKnotsU

Get the list of knots in the u-direction.

Public Method

GetKnotsV

Get the list of knots in the v-direction.

Public Method

GetType

Gets the Type of the current instance.
(Inherited from Object)

Public Method

GetWeights

Get the list of weights.

Public Method

IsValid

Check if the object contains a valid NurbsSurfaceData.

Public Method

ToString

Returns a string that represents the current object.
(Inherited from Object)