EigenMeat.EigenMaze
Class Math3D

java.lang.Object
  EigenMeat.EigenMaze.Math3D

public class Math3D

extends java.lang.Object

3d math methods.

Constructor Summary

Math3D()
Default constructor.

Method Summary

static Vect3d	calculateNormal(Vect3d v1, Vect3d v2, Vect3d v3) Calculates normal of a triangle.
static boolean	doesLineIntersectAABCube(Vect3d cen, float radius, Vect3d p1, Vect3d p2) Checks to see if line intersects an axis aligned bounding cube.
static Vect3d	getCollisionPointWithPlane(Plane plane, Vect3d point, Vect3d direction) Gets the collision point between a plane and a vector.
static Vect3d	getCollisionPointWithPlane(Vect3d planeNormal, float distance, Vect3d point, Vect3d direction) Gets the collision point between a plane and a vector.
static float	getPlaneDistance(Vect3d planeNormal, Vect3d pointOnPlane) Get plane distance to the origin of a specified plane.
static float	getPointDistanceFromPlane(Vect3d planeNormal, float distance, Vect3d point) Get the distance a point is from a plane.
static boolean	isPointInFrontOfPlane(Vect3d planeNormal, float distance, Vect3d point) Checks to see if a point is in front of a plane.

Methods inherited from class java.lang.Object

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

Constructor Detail

Math3D

public Math3D()

Default constructor.

Method Detail

getPlaneDistance

public static float getPlaneDistance(Vect3d planeNormal,
                                     Vect3d pointOnPlane)

Get plane distance to the origin of a specified plane.

Parameters:

planeNormal - normal of the plane

pointOnPlane - a point of on the plane

Returns:

plane distance

getPointDistanceFromPlane

public static float getPointDistanceFromPlane(Vect3d planeNormal,
                                              float distance,
                                              Vect3d point)

Get the distance a point is from a plane.

Parameters:

planeNormal - normal of a plane

distance - plane distance of the plane

point - to check

Returns:

distance

isPointInFrontOfPlane

public static boolean isPointInFrontOfPlane(Vect3d planeNormal,
                                            float distance,
                                            Vect3d point)

Checks to see if a point is in front of a plane.

Parameters:

planeNormal - normal of plane

distance - plane distance of plane

point - point to check

Returns:

true if point is in front of plane, else false

getCollisionPointWithPlane

public static Vect3d getCollisionPointWithPlane(Plane plane,
                                                Vect3d point,
                                                Vect3d direction)

Gets the collision point between a plane and a vector.

Parameters:

plane - a plane

point - starting point of vector

direction - direction of vector

Returns:

collision point

getCollisionPointWithPlane

public static Vect3d getCollisionPointWithPlane(Vect3d planeNormal,
                                                float distance,
                                                Vect3d point,
                                                Vect3d direction)

Gets the collision point between a plane and a vector.

Parameters:

planeNormal - plane normal

distance - plane distance

point - starting point of vector

direction - vector direction

Returns:

collision point

doesLineIntersectAABCube

public static boolean doesLineIntersectAABCube(Vect3d cen,
                                               float radius,
                                               Vect3d p1,
                                               Vect3d p2)

Checks to see if line intersects an axis aligned bounding cube.

Parameters:

cen - cube center

radius - cube size

p1 - start point of line

p2 - end point of line

Returns:

true of line intersects cube, else false

calculateNormal

public static Vect3d calculateNormal(Vect3d v1,
                                     Vect3d v2,
                                     Vect3d v3)

Calculates normal of a triangle.

Parameters:

v1 - first vertex

v2 - second vertex

v3 - third vertex

Returns:

normal