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
Properties
Name |
Description |
Color { get; set; } |
Gets or sets the color of the line, default value is white(1, 1, 1) |
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. |
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. |
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. |
ParentNodes { get; } |
Gets all parent nodes, an entity can be attached to multiple parent nodes for geometry instancing |
Properties { get; } |
Gets the collection of all properties. |
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 |
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) |
GetBoundingBox() |
Gets the bounding box of current entity in its object space coordinate system. |
override GetEntityRendererKey() |
Gets the key of the entity renderer registered in the renderer |
GetProperty(string) |
Get the value of specified property |
RemoveProperty(Property) |
Removes a dynamic property. |
RemoveProperty(string) |
Remove the specified property identified by name |
SetProperty(string, object) |
Sets the value of specified property |
See Also