thothbot.parallax.core.shared.math

Class Ray

java.lang.Object

thothbot.parallax.core.shared.math.Ray

public class Ray
extends java.lang.Object

Representation of a ray in space.

Pretty useful for detecting collisions between objects in a scene.

Based on three.js code.

Author:

thothbot

Constructor Summary

Constructors

Constructor and Description
Ray()
Ray(Vector3 origin, Vector3 direction)

Method Summary

Modifier and Type	Method and Description
Ray	apply(Matrix4 matrix4)
Vector3	at(double t)
Vector3	at(double t, Vector3 optionalTarget)
Ray	clone()
Vector3	closestPointToPoint(Vector3 point)
Vector3	closestPointToPoint(Vector3 point, Vector3 optionalTarget)
Ray	copy(Ray ray)
double	distanceSqToSegment(Vector3 v0, Vector3 v1, Vector3 optionalPointOnRay, Vector3 optionalPointOnSegment)
java.lang.Double	distanceToPlane(Plane plane)
double	distanceToPoint(Vector3 point)
boolean	equals(Ray ray)
Vector3	getDirection()
Vector3	getOrigin()
Vector3	intersectBox(Box3 box, Vector3 optionalTarget) http://www.scratchapixel.com/lessons/3d-basic-lessons/lesson-7-intersecting-simple-shapes/ray-box-intersection/
Vector3	intersectPlane(Plane plane)
Vector3	intersectPlane(Plane plane, Vector3 optionalTarget)
Vector3	intersectSphere(Sphere sphere)
Vector3	intersectSphere(Sphere sphere, Vector3 optionalTarget) from http://www.scratchapixel.com/lessons/3d-basic-lessons/lesson-7-intersecting-simple-shapes/ray-sphere-intersection/
Vector3	intersectTriangle(Vector3 a, Vector3 b, Vector3 c, boolean backfaceCulling)
Vector3	intersectTriangle(Vector3 a, Vector3 b, Vector3 c, boolean backfaceCulling, Vector3 optionalTarget) from http://www.geometrictools.com/LibMathematics/Intersection/Wm5IntrRay3Triangle3.cpp
boolean	isIntersectionBox(Box3 box)
boolean	isIntersectionPlane(Plane plane)
boolean	isIntersectionSphere(Sphere sphere)
Ray	recast(double t)
Ray	set(Vector3 origin, Vector3 direction)
void	setDirection(Vector3 direction)
void	setOrigin(Vector3 origin)

Methods inherited from class java.lang.Object

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

Constructor Detail

Ray

public Ray()

Ray

public Ray(Vector3 origin,
           Vector3 direction)

Method Detail

getOrigin

public Vector3 getOrigin()

setOrigin

public void setOrigin(Vector3 origin)

getDirection

public Vector3 getDirection()

setDirection

public void setDirection(Vector3 direction)

set

public Ray set(Vector3 origin,
               Vector3 direction)

copy

public Ray copy(Ray ray)

at

public Vector3 at(double t)

at

public Vector3 at(double t,
                  Vector3 optionalTarget)

recast

public Ray recast(double t)

closestPointToPoint

public Vector3 closestPointToPoint(Vector3 point)

closestPointToPoint

public Vector3 closestPointToPoint(Vector3 point,
                                   Vector3 optionalTarget)

distanceToPoint

public double distanceToPoint(Vector3 point)

distanceSqToSegment

public double distanceSqToSegment(Vector3 v0,
                                  Vector3 v1,
                                  Vector3 optionalPointOnRay,
                                  Vector3 optionalPointOnSegment)

isIntersectionSphere

public boolean isIntersectionSphere(Sphere sphere)

intersectSphere

public Vector3 intersectSphere(Sphere sphere)

intersectSphere

public Vector3 intersectSphere(Sphere sphere,
                               Vector3 optionalTarget)

from http://www.scratchapixel.com/lessons/3d-basic-lessons/lesson-7-intersecting-simple-shapes/ray-sphere-intersection/

Parameters:

sphere -

optionalTarget -

Returns:

isIntersectionPlane

public boolean isIntersectionPlane(Plane plane)

distanceToPlane

public java.lang.Double distanceToPlane(Plane plane)

intersectPlane

public Vector3 intersectPlane(Plane plane)

intersectPlane

public Vector3 intersectPlane(Plane plane,
                              Vector3 optionalTarget)

isIntersectionBox

public boolean isIntersectionBox(Box3 box)

intersectBox

public Vector3 intersectBox(Box3 box,
                            Vector3 optionalTarget)

http://www.scratchapixel.com/lessons/3d-basic-lessons/lesson-7-intersecting-simple-shapes/ray-box-intersection/

Parameters:

box -

optionalTarget -

Returns:

intersectTriangle

public Vector3 intersectTriangle(Vector3 a,
                                 Vector3 b,
                                 Vector3 c,
                                 boolean backfaceCulling)

intersectTriangle

public Vector3 intersectTriangle(Vector3 a,
                                 Vector3 b,
                                 Vector3 c,
                                 boolean backfaceCulling,
                                 Vector3 optionalTarget)

from http://www.geometrictools.com/LibMathematics/Intersection/Wm5IntrRay3Triangle3.cpp

Parameters:

a -

b -

c -

backfaceCulling -

optionalTarget -

Returns:

apply

public Ray apply(Matrix4 matrix4)

equals

public boolean equals(Ray ray)

clone

public Ray clone()

Overrides:

clone in class java.lang.Object