Package com.jme3.math

Class CurveAndSurfaceMath

java.lang.Object

com.jme3.math.CurveAndSurfaceMath

public class CurveAndSurfaceMath
extends Object

This class offers methods to help with curves and surfaces calculations.

Method Summary

Modifier and Type	Method	Description
static void	interpolate(float u, float v, List<List<Vector4f>> controlPoints, List<Float>[] knots, int basisUFunctionDegree, int basisVFunctionDegree, Vector3f store)	This method interpolates the data for the nurbs surface.
static void	interpolateNurbs(float u, Spline nurbSpline, Vector3f store)	This method interpolates the data for the nurbs curve.
static void	prepareNurbsKnots(List<Float> knots, int basisFunctionDegree)	This method prepares the knots to be used.

Methods inherited from class java.lang.Object

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

Method Details

interpolateNurbs

public static void interpolateNurbs(float u,
 Spline nurbSpline,
 Vector3f store)

This method interpolates the data for the nurbs curve.

Parameters:

u - the u value

nurbSpline - the nurbs spline definition

store - the resulting point in 3D space

interpolate

public static void interpolate(float u,
 float v,
 List<List<Vector4f>> controlPoints,
 List<Float>[] knots,
 int basisUFunctionDegree,
 int basisVFunctionDegree,
 Vector3f store)

This method interpolates the data for the nurbs surface.

Parameters:

u - the u value

v - the v value

controlPoints - the nurbs' control points

knots - the nurbs' knots

basisUFunctionDegree - the degree of basis U function

basisVFunctionDegree - the degree of basis V function

store - the resulting point in 3D space

prepareNurbsKnots

public static void prepareNurbsKnots(List<Float> knots,
 int basisFunctionDegree)

This method prepares the knots to be used. If the knots represent non-uniform B-splines (first and last knot values are being repeated) it leads to NaN results during calculations. This method adds a small number to each of such knots to avoid NaN's.

Parameters:

knots - the knots to be prepared to use

basisFunctionDegree - the degree of basis function