Class NurbsCurve
NurbsCurve class
NURBS curve is a curve represented by NURBS(Non-uniform rational basis spline), A NURBS curve is defined by its Order, a set of weighted ControlPoints and a KnotVectors The w component in control point is used as control point’s weight, whatever it is a TwoDimensional or ThreeDimensional
public class NurbsCurve : Curve
Constructors
| Name | Description |
|---|
| NurbsCurve() | Initializes a new instance of the NurbsCurve class. |
| NurbsCurve(string) | Initializes a new instance of the NurbsCurve class. |
Properties
| Name | Description |
|---|
| Color { get; set; } | Gets or sets the color of the line, default value is white(1, 1, 1)(Inherited from Curve.) |
| ControlPoints { get; } | Gets all control points |
| CurveType { get; set; } | Gets or sets the type of the curve. |
| Dimension { get; set; } | Gets or sets the curve’s dimension. |
| Excluded { get; set; } | Gets or sets whether to exclude this entity during exporting.(Inherited from Entity.) |
| KnotVectors { get; } | Gets the knot vector, it is a sequence of parameter values that determines where and how the control points affect the NURBS curve. |
| Multiplicity { get; } | Gets the multiplicity. |
| virtual Name { get; set; } | Gets or sets the name.(Inherited from A3DObject.) |
| Order { get; set; } | Gets or sets the order of a NURBS curve, it defines the number of nearby control points that influence any given point on the curve. |
| ParentNode { get; set; } | Gets or sets the first parent node, if set the first parent node, this entity will be detached from other parent nodes.(Inherited from Entity.) |
| ParentNodes { get; } | Gets all parent nodes, an entity can be attached to multiple parent nodes for geometry instancing(Inherited from Entity.) |
| Properties { get; } | Gets the collection of all properties.(Inherited from A3DObject.) |
| Rational { get; set; } | Gets or sets whether it is rational, this value indicates whether this NurbsCurve is rational spline or non-rational spline. Non-rational B-spline is a special case of rational B-splines. |
| Scene { get; } | Gets the scene that this object belongs to(Inherited from SceneObject.) |
Methods
| Name | Description |
|---|
| Evaluate(int) | Evaluate the NURBS curve |
| EvaluateAt(double) | Evaluate the curve’s point at specified position |
| FindProperty(string) | Finds the property. It can be a dynamic property (Created by CreateDynamicProperty/SetProperty) or native property(Identified by its name)(Inherited from A3DObject.) |
| GetBoundingBox() | Gets the bounding box of current entity in its object space coordinate system.(Inherited from Entity.) |
| override GetEntityRendererKey() | Gets the key of the entity renderer registered in the renderer(Inherited from Curve.) |
| GetProperty(string) | Get the value of specified property(Inherited from A3DObject.) |
| RemoveProperty(Property) | Removes a dynamic property.(Inherited from A3DObject.) |
| RemoveProperty(string) | Remove the specified property identified by name(Inherited from A3DObject.) |
| SetProperty(string, object) | Sets the value of specified property(Inherited from A3DObject.) |
See Also
