NurbsCurve
Overview
NurbsCurve is a 3D curve analogous to NurbsPatchSurface.
The NurbsCurve node belongs to the NURBS component and requires at least support level 1, its default container field is geometry. It is available from X3D version 3.0 or higher.
Hierarchy
1
2
3
4
+ X3DNode
+ X3DGeometryNode
+ X3DParametricGeometryNode
+ NurbsCurve
Fields
| Type | Access Type | Name | Default Value |
|---|---|---|---|
| SFNode | [in, out] | metadata | NULL |
| SFInt32 | [in, out] | tessellation | 0 |
| SFBool | [ ] | closed | FALSE |
| SFInt32 | [ ] | order | 3 |
| MFDouble | [ ] | knot | [ ] |
| MFDouble | [in, out] | weight | [ ] |
| SFNode | [in, out] | controlPoint | NULL |
SFNode [in, out] metadata NULL [X3DMetadataObject]
Information about this node can be contained in a MetadataBoolean, MetadataDouble, MetadataFloat, MetadataInteger, MetadataString or MetadataSet node.
Hint
SFInt32 [in, out] tessellation 0 (-∞,∞)
Hint for surface tessellation.
SFBool [ ] closed FALSE
Whether or not the curve is closed (i.e. matching end values).
SFInt32 [ ] order 3 [2,∞)
Define order of surface by polynomials of degree = order-1.
MFDouble [ ] knot [ ] (-∞,∞)
knot vector, where size = number of control points + order of curve.
MFDouble [in, out] weight [ ] (0,∞)
Vector assigning relative weight value to each control point.
SFNode [in, out] controlPoint NULL [X3DCoordinateNode]
Single contained Coordinate or CoordinateDouble node that can specify control points for NURBS geometry definitions.
Advice
Hint
- The contained controlPoint field can hold a Coordinate or CoordinateDouble node.
Example
