math.geom3d.plane
Class Plane3D

java.lang.Object
  math.geom3d.plane.Plane3D

All Implemented Interfaces:

Shape3D

public class Plane3D
extends java.lang.Object
implements Shape3D

Author:

dlegland

Field Summary

Fields inherited from interface math.geom3d.Shape3D

ACCURACY

Constructor Summary

Plane3D()

Plane3D(Point3D point, Vector3D vector1, Vector3D vector2)

Method Summary

Box3D	boundingBox()
Shape3D	clip(Box3D box)
boolean	contains(Point3D point)
static Plane3D	createXYPlane()
static Plane3D	createXZPlane()
static Plane3D	createYZPlane()
double	distance(Point3D point) Gets the distance of the shape to the given point, or the distance of point to the frontier of the shape in the case of a plain shape.
boolean	equals(java.lang.Object obj)
boolean	isBounded() Returns true if the shape is bounded, that is if we can draw a finite rectangle enclosing the shape.
boolean	isEmpty()
Point3D	lineIntersection(StraightLine3D line) Compute intersection of a line with this plane.
Vector3D	normal() Returns a normal vector that points towards the outside part of the plane.
Point3D	origin()
Point3D	point(double u, double v)
Point2D	pointPosition(Point3D point)
Point3D	projectPoint(Point3D point)
Vector3D	projectVector(Vector3D vect)
Shape3D	transform(AffineTransform3D trans)
Vector3D	vector1()
Vector3D	vector2()

Methods inherited from class java.lang.Object

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

Constructor Detail

Plane3D

public Plane3D()

Plane3D

public Plane3D(Point3D point,
               Vector3D vector1,
               Vector3D vector2)

Method Detail

createXYPlane

public static final Plane3D createXYPlane()

createXZPlane

public static final Plane3D createXZPlane()

createYZPlane

public static final Plane3D createYZPlane()

origin

public Point3D origin()

vector1

public Vector3D vector1()

vector2

public Vector3D vector2()

normal

public Vector3D normal()

Returns a normal vector that points towards the outside part of the plane.

Returns:

the outer normal vector.

lineIntersection

public Point3D lineIntersection(StraightLine3D line)

Compute intersection of a line with this plane. Uses algorithm 1 given in: http://local.wasp.uwa.edu.au/~pbourke/geometry/planeline/.

Parameters:

line - the line which intersects the plane

Returns:

the intersection point

projectPoint

public Point3D projectPoint(Point3D point)

projectVector

public Vector3D projectVector(Vector3D vect)

point

public Point3D point(double u,
                     double v)

pointPosition

public Point2D pointPosition(Point3D point)

clip

public Shape3D clip(Box3D box)

Specified by:

clip in interface Shape3D

contains

public boolean contains(Point3D point)

Specified by:

contains in interface Shape3D

boundingBox

public Box3D boundingBox()

Specified by:

boundingBox in interface Shape3D

distance

public double distance(Point3D point)

Description copied from interface: Shape3D

Gets the distance of the shape to the given point, or the distance of point to the frontier of the shape in the case of a plain shape.

Specified by:

distance in interface Shape3D

isBounded

public boolean isBounded()

Description copied from interface: Shape3D

Returns true if the shape is bounded, that is if we can draw a finite rectangle enclosing the shape. For example, a straight line or a parabola are not bounded.

Specified by:

isBounded in interface Shape3D

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Shape3D

transform

public Shape3D transform(AffineTransform3D trans)

Specified by:

transform in interface Shape3D

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object