org.gephi.lib.gleem.linalg

Class Plane

java.lang.Object

org.gephi.lib.gleem.linalg.Plane

public class Plane
extends Object

Represents a plane in 3D space.

Field Summary

Fields

Modifier and Type	Field and Description
(package private) float	c Constant for faster projection and intersection
private Vec3f	normal Normalized
private Vec3f	point

Constructor Summary

Constructors

Constructor and Description
Plane() Default constructor initializes normal to (0, 1, 0) and point to (0, 0, 0)
Plane(Vec3f normal, Vec3f point) Sets all parameters of plane.

Method Summary

Modifier and Type	Method and Description
Vec3f	getNormal() Normal is normalized internally, so normal is not necessarily equal to plane.setNormal(normal); plane.getNormal();
Vec3f	getPoint()
boolean	intersectRay(Vec3f rayStart, Vec3f rayDirection, IntersectionPoint intPt) Intersect a ray with the plane.
void	projectPoint(Vec3f pt, Vec3f projPt) Project a point onto the plane
private void	recalc()
void	setNormal(Vec3f normal) Setter does some work to maintain internal caches.
void	setPoint(Vec3f point) Setter does some work to maintain internal caches

Methods inherited from class java.lang.Object

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

Field Detail

normal

private Vec3f normal

Normalized

point

private Vec3f point

c

float c

Constant for faster projection and intersection

Constructor Detail

Plane

public Plane()

Default constructor initializes normal to (0, 1, 0) and point to (0, 0, 0)

Plane

public Plane(Vec3f normal,
             Vec3f point)

Sets all parameters of plane. Plane has normal normal and goes through the point point. Normal does not need to be unit length but must not be the zero vector.

Method Detail

setNormal

public void setNormal(Vec3f normal)

Setter does some work to maintain internal caches. Normal does not need to be unit length but must not be the zero vector.

getNormal

public Vec3f getNormal()

Normal is normalized internally, so normal is not necessarily equal to plane.setNormal(normal); plane.getNormal();

setPoint

public void setPoint(Vec3f point)

Setter does some work to maintain internal caches

getPoint

public Vec3f getPoint()

projectPoint

public void projectPoint(Vec3f pt,
                         Vec3f projPt)

Project a point onto the plane

intersectRay

public boolean intersectRay(Vec3f rayStart,
                            Vec3f rayDirection,
                            IntersectionPoint intPt)

Intersect a ray with the plane. Returns true if intersection occurred, false otherwise. This is a two-sided ray cast.

recalc

private void recalc()