CollisionSegment Class Reference

A finite line segment, with two specific endpoints but no thickness. More...

Inheritance diagram for CollisionSegment:

List of all members.

Public Member Functions
	CollisionSegment ()
	Creates an invalid segment.
	CollisionSegment (Point3 const a, Point3 const db)
	CollisionSegment (float ax, float ay, float az, float bx, float by, float bz)
Point3 const	getPointA ()
Point3 const	getPointB ()
bool	setFromLens (LensNode camera, float px, float py)
	Accepts a LensNode and a 2-d point in the range [-1,1].
bool	setFromLens (LensNode camera, Point2 const point)
	Accepts a LensNode and a 2-d point in the range [-1,1].
	setPointA (float x, float y, float z)
	setPointA (Point3 const a)
	setPointB (float x, float y, float z)
	setPointB (Point3 const b)
Static Public Member Functions
static TypeHandle	getClassType ()

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Detailed Description

A finite line segment, with two specific endpoints but no thickness.

It's similar to a CollisionRay, except it does not continue to infinity.

It does have an ordering, from point A to point B. If more than a single point of the segment is intersecting a solid, the reported intersection point is generally the closest on the segment to point A.

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Constructor & Destructor Documentation

CollisionSegment

(

)

Creates an invalid segment.

This isn't terribly useful; it's expected that the user will subsequently adjust the segment via set_origin()/set_direction() or set_from_lens().

CollisionSegment	(	Point3 const	a,
		Point3 const	db
	)

CollisionSegment	(	float	ax,
		float	ay,
		float	az,
		float	bx,
		float	by,
		float	bz
	)

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Member Function Documentation

static TypeHandle getClassType

(

)

[static]

Reimplemented from CollisionSolid.

Point3 const getPointA

(

)

Point3 const getPointB

(

)

bool setFromLens	(	LensNode	camera,
		float	px,
		float	py
	)

Accepts a LensNode and a 2-d point in the range [-1,1].

Sets the CollisionSegment so that it begins at the LensNode's near plane and extends to the far plane, making it suitable for picking objects from the screen given a camera and a mouse location.

bool setFromLens	(	LensNode	camera,
		Point2 const	point
	)

Accepts a LensNode and a 2-d point in the range [-1,1].

Sets the CollisionSegment so that it begins at the LensNode's near plane and extends to the far plane, making it suitable for picking objects from the screen given a camera and a mouse location.

Returns true if the point was acceptable, false otherwise.

setPointA	(	float	x,
		float	y,
		float	z
	)

setPointA

(

Point3 const

a

)

setPointB

(

Point3 const

b

)

setPointB	(	float	x,
		float	y,
		float	z
	)