com.aspose.threed

Class NurbsCurve

java.lang.Object

com.aspose.threed.A3DObject

com.aspose.threed.SceneObject

com.aspose.threed.Entity

com.aspose.threed.Curve

com.aspose.threed.NurbsCurve

public class NurbsCurve
extends Curve

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

Field Summary

Fields inherited from class com.aspose.threed.A3DObject

name, properties

Constructor Summary

Constructors

Constructor and Description
NurbsCurve() Initializes a new instance of the NurbsCurve class.
NurbsCurve(java.lang.String name) Initializes a new instance of the NurbsCurve class.

Method Summary

Modifier and Type	Method and Description
Vector4[]	evaluate() Evaluate the NURBS curve
Vector4[]	evaluate(int steps) Evaluate the NURBS curve
Vector4	evaluateAt(double u) Evaluate the curve's point at specified position
java.util.List<Vector4>	getControlPoints() Gets all control points
NurbsType	getCurveType() Gets the type of the curve.
CurveDimension	getDimension() Gets the curve's dimension.
java.util.List<java.lang.Double>	getKnotVectors() Gets the knot vector, it is a sequence of parameter values that determines where and how the control points affect the NURBS curve.
java.util.List<java.lang.Integer>	getMultiplicity() Gets the multiplicity.
int	getOrder() Gets the order of a NURBS curve, it defines the number of nearby control points that influence any given point on the curve.
boolean	getRational() Gets whether it is rational, this value indicates whether this NurbsCurve is rational spline or non-rational spline.
void	setCurveType(NurbsType value) Sets the type of the curve.
void	setDimension(CurveDimension value) Sets the curve's dimension.
void	setOrder(int value) Sets the order of a NURBS curve, it defines the number of nearby control points that influence any given point on the curve.
void	setRational(boolean value) Sets whether it is rational, this value indicates whether this NurbsCurve is rational spline or non-rational spline.

Methods inherited from class com.aspose.threed.Curve

getColor, getEntityRendererKey, setColor

Methods inherited from class com.aspose.threed.Entity

getBoundingBox, getExcluded, getParentNode, getParentNodes, setExcluded, setParentNode

Methods inherited from class com.aspose.threed.SceneObject

getScene

Methods inherited from class com.aspose.threed.A3DObject

findProperty, getName, getProperties, getProperty, removeProperty, removeProperty, setName, setProperty

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NurbsCurve

public NurbsCurve()

Initializes a new instance of the NurbsCurve class.

NurbsCurve

public NurbsCurve(java.lang.String name)

Initializes a new instance of the NurbsCurve class.

Parameters:

name - Name

Method Detail

getControlPoints

public java.util.List<Vector4> getControlPoints()

Gets all control points

getMultiplicity

public java.util.List<java.lang.Integer> getMultiplicity()

Gets the multiplicity.

getOrder

public int getOrder()

Gets the order of a NURBS curve, it defines the number of nearby control points that influence any given point on the curve.

setOrder

public void setOrder(int value)

Sets the order of a NURBS curve, it defines the number of nearby control points that influence any given point on the curve.

Parameters:

value - New value

getDimension

public CurveDimension getDimension()

Gets the curve's dimension.

setDimension

public void setDimension(CurveDimension value)

Sets the curve's dimension.

Parameters:

value - New value

getCurveType

public NurbsType getCurveType()

Gets the type of the curve.

setCurveType

public void setCurveType(NurbsType value)

Sets the type of the curve.

Parameters:

value - New value

getKnotVectors

public java.util.List<java.lang.Double> getKnotVectors()

Gets the knot vector, it is a sequence of parameter values that determines where and how the control points affect the NURBS curve.

getRational

public boolean getRational()

Gets 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.

setRational

public void setRational(boolean value)

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.

Parameters:

value - New value

evaluate

public Vector4[] evaluate(int steps)

Evaluate the NURBS curve

Parameters:

steps - The evaluation frequency between two neighbor knots, default value is 20

Returns:

Points in the curve

evaluate

public Vector4[] evaluate()

Evaluate the NURBS curve

Returns:

Points in the curve

evaluateAt

public Vector4 evaluateAt(double u)

Evaluate the curve's point at specified position

Parameters:

u - The position in the curve, between 0 and 1