Box3F Class Reference

#include <mBox.h>

Public Member Functions
	Box3F ()
	Box3F (const Point3F &in_rMin, const Point3F &in_rMax, const bool in_overrideCheck=false)
	Box3F (F32 xmin, F32 ymin, F32 zmin, F32 max, F32 ymax, F32 zmax)
bool	isContained (const Point3F &in_rContained) const
	Check to see if a point is contained in this box.
bool	isOverlapped (const Box3F &in_rOverlap) const
	Check to see if another box overlaps this box.
bool	isContained (const Box3F &in_rContained) const
	Check to see if another box is contained in this box.
F32	len_x () const
F32	len_y () const
F32	len_z () const
void	intersect (const Box3F &in_rIntersect)
void	intersect (const Point3F &in_rIntersect)
void	getCenter (Point3F *center) const
bool	collideLine (const Point3F &start, const Point3F &end, F32 *t, Point3F *n) const
bool	collideLine (const Point3F &start, const Point3F &end) const
bool	collideOrientedBox (const Point3F &radii, const MatrixF &toUs) const
bool	isValidBox () const
Point3F	getClosestPoint (const Point3F &refPt) const
	Return the closest point of the box, relative to the passed point.

Public Attributes
Point3F	mMin
	Minimum extents of box.
Point3F	mMax
	Maximum extents of box.

Detailed Description

Bounding Box

A helper class for working with boxes. It runs at F32 precision.

See also

Box3D

Constructor & Destructor Documentation

Box3F() [1/3]

Box3F ( )

inline

Box3F() [2/3]

Box3F ( const Point3F & in_rMin, const Point3F & in_rMax, const bool in_overrideCheck = false )

inline

Create a box from two points.

Normally, this function will compensate for mismatched min/max values. If you know your values are valid, you can set in_overrideCheck to true and skip this.

Parameters

in_rMin	Minimum extents of box.
in_rMax	Maximum extents of box.
in_overrideCheck	Pass true to skip check of extents.

Box3F() [3/3]

Box3F ( F32 xmin, F32 ymin, F32 zmin, F32 max, F32 ymax, F32 zmax )

inline

Create a box from six extent values.

No checking is performed as to the validity of these extents, unlike the other constructor.

Member Function Documentation

collideLine() [1/2]

bool collideLine	(	const Point3F &	start,
		const Point3F &	end ) const

Collide a line against the box.

Returns true on collision.

collideLine() [2/2]

bool collideLine	(	const Point3F &	start,
		const Point3F &	end,
		F32 *	t,
		Point3F *	n ) const

Collide a line against the box.

Parameters

start	Start of line.
end	End of line.
t	Value from 0.0-1.0, indicating position along line of collision.
n	Normal of collision.

collideOrientedBox()

bool collideOrientedBox	(	const Point3F &	radii,
		const MatrixF &	toUs ) const

Collide an oriented box against the box.

Returns true if "oriented" box collides with us. Assumes incoming box is centered at origin of source space.

Parameters

radii	The dimension of incoming box (half x,y,z length).
toUs	A transform that takes incoming box into our space.

getCenter()

void getCenter ( Point3F * center ) const

inline

Get the center of this box.

This is the average of min and mMax.

getClosestPoint()

Point3F getClosestPoint ( const Point3F & refPt ) const

inline

Return the closest point of the box, relative to the passed point.

intersect() [1/2]

void intersect ( const Box3F & in_rIntersect )

inline

Perform an intersection operation with another box and store the results in this box.

intersect() [2/2]

void intersect ( const Point3F & in_rIntersect )

inline

isContained() [1/2]

bool isContained ( const Box3F & in_rContained ) const

inline

Check to see if another box is contained in this box.

isContained() [2/2]

bool isContained ( const Point3F & in_rContained ) const

inline

Check to see if a point is contained in this box.

isOverlapped()

bool isOverlapped ( const Box3F & in_rOverlap ) const

inline

Check to see if another box overlaps this box.

isValidBox()

bool isValidBox ( ) const

inline

Check that the box is valid.

Currently, this just means that min < mMax.

len_x()

F32 len_x ( ) const

inline

len_y()

F32 len_y ( ) const

inline

len_z()

F32 len_z ( ) const

inline

Member Data Documentation

mMax

Point3F mMax

Maximum extents of box.

mMin

Point3F mMin

Minimum extents of box.

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The documentation for this class was generated from the following files:

• math/mBox.h
• math/mBox.cc