jpview.ptms
Class HPNormals

java.lang.Object
  jpview.ptms.HPNormals

public class HPNormals
extends java.lang.Object

Original code by Hans Wolters Java port by Cliff Lyon

Field Summary

static double	eps epsilon value - same as zerotol
static double	zerotol zero tolerance - float close to zero

Constructor Summary

HPNormals()

Method Summary

static int	computeMaximumOnCircle(double[] a, double[] normal) Finds the maximum value for a normal on the circle for the given array of coefficients and adjusts normal
static double	evalPoly(double[] a, double t) Evaluate a polynomial for a given set of coefficients
static Vec3f[]	getNormals(LRGBPTM ptm) Returns "fixed" normals for corner cases in the PTM

Methods inherited from class java.lang.Object

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

Field Detail

zerotol

public static final double zerotol

zero tolerance - float close to zero

See Also:

Constant Field Values

eps

public static final double eps

epsilon value - same as zerotol

See Also:

Constant Field Values

Constructor Detail

HPNormals

public HPNormals()

Method Detail

evalPoly

public static double evalPoly(double[] a,
                              double t)

Evaluate a polynomial for a given set of coefficients

Parameters:

a - the coefficient array

t - one of the roots of the polynomial

Returns:

the result of the evaluation

computeMaximumOnCircle

public static int computeMaximumOnCircle(double[] a,
                                         double[] normal)

Finds the maximum value for a normal on the circle for the given array of coefficients and adjusts normal

Parameters:

a - array of coefficients

normal - normal for the point

Returns:

1 if roots were found and normal was adjusted, otherwise -1

getNormals

public static Vec3f[] getNormals(LRGBPTM ptm)

Returns "fixed" normals for corner cases in the PTM

Parameters:

ptm - the source ptm

Returns:

the adjusted array of Vec3f normals