NurbsCurve class

NURBS curve is a curve represented by NURBS(Non-uniform rational basis spline), A NURBS curve is defined by its NurbsCurve.order, a set of weighted Geometry.control_points and a NurbsCurve.KnotVectors The w component in control point is used as control point’s weight, whatever it is a CurveDimension.TWO_DIMENSIONAL or CurveDimension.THREE_DIMENSIONAL

Inheritance: NurbsCurve → Curve → Entity → SceneObject → A3DObject

The NurbsCurve type exposes the following members:

Constructor	Description
`__init__(self)`	Initializes a new instance of the `NurbsCurve` class.
`__init__(self, name)`	Initializes a new instance of the `NurbsCurve` class.

Property	Description
name	Gets or sets the name.
properties	Gets the collection of all properties.
scene	Gets the scene that this object belongs to
parent_nodes	Gets all parent nodes, an entity can be attached to multiple parent nodes for geometry instancing
excluded	Gets or sets whether to exclude this entity during exporting.
parent_node	Gets or sets the first parent node, if set the first parent node, this entity will be detached from other parent nodes.
color	Gets or sets the color of the line, default value is white(1, 1, 1)
order	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.
degree	Gets or sets the degree of a NURBS curve, the degree are defined as Order - 1
dimension	Gets or sets the curve’s dimension.
curve_type	Gets or sets the type of the curve.
rational	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.

Method	Description
`remove_property(self, property)`	Removes a dynamic property.
`remove_property(self, property)`	Remove the specified property identified by name
`get_property(self, property)`	Get the value of specified property
`set_property(self, property, value)`	Sets the value of specified property
`find_property(self, property_name)`	Finds the property. It can be a dynamic property (Created by CreateDynamicProperty/SetProperty) or native property(Identified by its name)
`get_bounding_box(self)`	Gets the bounding box of current entity in its object space coordinate system.
`get_entity_renderer_key(self)`	Gets the key of the entity renderer registered in the renderer
`evaluate(self, steps)`	Evaluate the NURBS curve
`evaluate_at(self, u)`	Evaluate the curve’s point at specified position