NurbsCurve

All Known Implementing Classes:: BasicNurbsCurve

public interface NurbsCurve

Interface for Nurbs Curves

Version:: 1.0
Author:: sg

Method Summary

Modifier and Type

Method

Description

Vec4D[][]

curveDerivCpts(int d, int r1, int r2)

Computes control points of dth derivative
Piegel, L.

Vec3D[]

derivativesOnCurve(float u, int d)

Vec3D[]

derivativesOnCurve(float u, int d, Vec3D[] ders)

Vec4D[]

getControlPoints()

Get the ControlPoints of this curve

int

getDegree()

Get the Degree of the curve

float[]

getKnots()

Gets the Knot values of the Nurbs curve

KnotVector

getKnotVector()

Vec3D

pointOnCurve(float u)

Calculate point on surface for the given u value

Vec3D

pointOnCurve(float u, Vec3D out)

Calculate point on surface for the given u value

Polygon2D

toPolygon2D(int res)

Method Details
- curveDerivCpts
  
  Vec4D[][] curveDerivCpts(int d, int r1, int r2)
  
  Computes control points of dth derivative
  Piegel, L. The Nurbs Book
  Algorithm A3.3 -> Page 98
  
  Parameters:
  
  d - - dth derivative
  
  r1 - - from control point (0 for all control points)
  
  r2 - - to control point (n for all control points)
  
  Returns:
  
  Vec4D[k][i] kth derivative, ith control point
- derivativesOnCurve
  
  Vec3D[] derivativesOnCurve(float u, int d)
- derivativesOnCurve
  
  Vec3D[] derivativesOnCurve(float u, int d, Vec3D[] ders)
- getControlPoints
  
  Vec4D[] getControlPoints()
  
  Get the ControlPoints of this curve
  
  Returns:
  
  the ordered ControlPoints
- getDegree
  
  int getDegree()
  
  Get the Degree of the curve
  
  Returns:
  
  degree of curve
- getKnots
  
  float[] getKnots()
  
  Gets the Knot values of the Nurbs curve
  
  Returns:
  
  knot values
- getKnotVector
  
  KnotVector getKnotVector()
- pointOnCurve
  
  Vec3D pointOnCurve(float u)
  
  Calculate point on surface for the given u value
  
  Parameters:
  
  u - value to calculate point of
  
  Returns:
  
  calculated Point
- pointOnCurve
  
  Vec3D pointOnCurve(float u, Vec3D out)
  
  Calculate point on surface for the given u value
  
  Parameters:
  
  u - value to calculate point of
  
  out - Point to place result in
- toPolygon2D
  
  Polygon2D toPolygon2D(int res)