net.java.dev.joode.util
Class Vector4

java.lang.Object
  net.java.dev.joode.util.Real
      net.java.dev.joode.util.Vector4

Direct Known Subclasses:

Quaternion

public class Vector4
extends Real

Author:

Tom Larkworthy

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Field Summary

static Vector4	additionalConstraint
static Matrix4	linearHyperplaneCooeffecients
static Vector4	linearHyperplaneRHS
static Matrix4	modifiedNormals
static Matrix4	tmp

Fields inherited from class net.java.dev.joode.util.Real

m

Constructor Summary

Vector4()

Vector4(float x, float y, float z, float w)

Method Summary

void	add(float x, float y, float z, float w)
static Vector4	getLinearHyperPlaneNormal(Vector4 p1, Vector4 p2, Vector4 p3, Vector4 normal) returns the normal of a linear hyperplane (that is a 4D hyperplane passing through the origin) from three points.
void	set(float x, float y, float z, float w)
static Vector4	setRandomVector(Vector4 normal) sets the vector to be a posative random unit vector (should remove the forcing it to be unit)
void	sub(float x, float y, float z, float w)
java.lang.String	toString()

Methods inherited from class net.java.dev.joode.util.Real

add, aquireDirtyInstance, aquireInstance, dot, dot, epsilonEquals, epsilonEquals, fill, get, length, lengthSquared, max, min, norm, normalize, releaseInstance, scale, set, set, setZero, size, sub

Methods inherited from class java.lang.Object

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

Field Detail

modifiedNormals

public static final Matrix4 modifiedNormals

tmp

public static final Matrix4 tmp

linearHyperplaneCooeffecients

public static final Matrix4 linearHyperplaneCooeffecients

linearHyperplaneRHS

public static final Vector4 linearHyperplaneRHS

additionalConstraint

public static final Vector4 additionalConstraint

Constructor Detail

Vector4

public Vector4()

Vector4

public Vector4(float x,
               float y,
               float z,
               float w)

Method Detail

set

public void set(float x,
                float y,
                float z,
                float w)

add

public void add(float x,
                float y,
                float z,
                float w)

sub

public void sub(float x,
                float y,
                float z,
                float w)

toString

public java.lang.String toString()

Overrides:

toString in class Real

getLinearHyperPlaneNormal

public static Vector4 getLinearHyperPlaneNormal(Vector4 p1,
                                                Vector4 p2,
                                                Vector4 p3,
                                                Vector4 normal)

returns the normal of a linear hyperplane (that is a 4D hyperplane passing through the origin) from three points. i.e. Ax1 + Bx2 + Cx3 + Dx4 = 0 deals with degeneracies, if the points are colinear though, and so no unique plane can be found then the method fills the passback with NaN

Parameters:

p1 -

p2 -

p3 -

normal -

See Also:

net.java.dev.joode.test.util.Vector4Test#testGetLinearHyperPlaneNormal();, ;, net.java.dev.joode.test.util.Vector4Test#testGetLinearHyperPlaneNormalDegenerate();

setRandomVector

public static Vector4 setRandomVector(Vector4 normal)

sets the vector to be a posative random unit vector (should remove the forcing it to be unit)

Parameters:

normal -

Returns: