math
Class Ray

java.lang.Object
  math.Ray

public class Ray
extends java.lang.Object

a ray

Field Summary

Vector3D	direction
Point3D	start

Constructor Summary

Ray()
standard constructor

Ray(Point3D start, Vector3D direction)
constructor

Ray(Ray ray)
copy constructor

Method Summary

void	advance(double t) advances the start point of the ray by t*direction
Point3D	getPoint(double t) returns the point start+t*direction
void	set(Point3D start, Vector3D direction) sets the ray

Methods inherited from class java.lang.Object

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

Field Detail

start

public Point3D start

direction

public Vector3D direction

Constructor Detail

Ray

public Ray()

standard constructor

Ray

public Ray(Ray ray)

copy constructor

Parameters:

ray - [in] the ray to copy

Ray

public Ray(Point3D start,
           Vector3D direction)

constructor

Parameters:

start - [in] start point

direction - [in] vector of direction

Method Detail

set

public void set(Point3D start,
                Vector3D direction)

sets the ray

Parameters:

start - [in] start point

direction - [in] vector of direction

getPoint

public Point3D getPoint(double t)

returns the point start+t*direction

Parameters:

t - [in] distance

Returns:

start+t*direction

advance

public void advance(double t)

advances the start point of the ray by t*direction

Parameters:

t - [in] distance to advance the ray