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BoundingBox Class Reference

An axis-aligned bounding box; that is, a minimum and maximum coordinate triple. More...

#include "boundingBox.h"

Inheritance diagram for BoundingBox:
FiniteBoundingVolume GeometricBoundingVolume BoundingVolume TypedReferenceCount TypedObject ReferenceCount MemoryBase MemoryBase

List of all members.

Public Member Functions

 BoundingBox ()
 Constructs an empty box object.
 BoundingBox (const LPoint3f &min, const LPoint3f &max)
 Constructs a specific box object.
virtual const BoundingBoxas_bounding_box () const
 Virtual downcast method.
virtual TypeHandle force_init_type ()
virtual LPoint3f get_approx_center () const
virtual LPoint3f get_max () const
const LPoint3fget_maxq () const
 An inline accessor for the maximum value.
virtual LPoint3f get_min () const
const LPoint3fget_minq () const
 An inline accessor for the minimum value.
int get_num_planes () const
 Returns 6: the number of faces of a rectangular solid.
int get_num_points () const
 Returns 8: the number of vertices of a rectangular solid.
Planef get_plane (int n) const
 Returns the nth face of the rectangular solid.
LPoint3f get_point (int n) const
 Returns the nth vertex of the rectangular solid.
virtual TypeHandle get_type () const
virtual float get_volume () const
virtual BoundingVolumemake_copy () const
 MAKE_SEQ (get_planes, get_num_planes, get_plane)
 MAKE_SEQ (get_points, get_num_points, get_point)
virtual void output (ostream &out) const
virtual void xform (const LMatrix4f &mat)

Static Public Member Functions

static TypeHandle get_class_type ()
static void init_type ()
 This function is declared non-inline to work around a compiler bug in g++ 2.96.

Protected Member Functions

virtual bool around_boxes (const BoundingVolume **first, const BoundingVolume **last)
 Double-dispatch support: called by around_other() when the type of the first element in the list is known to be a nonempty box.
bool around_finite (const BoundingVolume **first, const BoundingVolume **last)
virtual bool around_hexahedrons (const BoundingVolume **first, const BoundingVolume **last)
 Double-dispatch support: called by around_other() when the type of the first element in the list is known to be a nonempty hexahedron.
virtual bool around_other (BoundingVolume *other, const BoundingVolume **first, const BoundingVolume **last) const
virtual bool around_points (const LPoint3f *first, const LPoint3f *last)
 Puts the volume around the indicated list of points, identified by an STL-style begin/end list.
virtual bool around_spheres (const BoundingVolume **first, const BoundingVolume **last)
 Double-dispatch support: called by around_other() when the type of the first element in the list is known to be a nonempty sphere.
virtual int contains_box (const BoundingBox *box) const
 Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a box.
int contains_finite (const FiniteBoundingVolume *volume) const
virtual int contains_hexahedron (const BoundingHexahedron *hexahedron) const
 Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a hexahedron.
virtual int contains_line (const BoundingLine *line) const
 Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a line.
virtual int contains_lineseg (const LPoint3f &a, const LPoint3f &b) const
 Tests whether the volume contains the indicated line segment.
virtual int contains_other (const BoundingVolume *other) const
virtual int contains_plane (const BoundingPlane *plane) const
 Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a plane.
virtual int contains_point (const LPoint3f &point) const
 Tests whether the volume contains the indicated point.
virtual int contains_sphere (const BoundingSphere *sphere) const
 Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a sphere.
virtual bool extend_by_box (const BoundingBox *box)
 Double-dispatch support: called by extend_other() when the type we're extending by is known to be a box.
bool extend_by_finite (const FiniteBoundingVolume *volume)
virtual bool extend_by_hexahedron (const BoundingHexahedron *hexahedron)
 Double-dispatch support: called by extend_other() when the type we're extending by is known to be a hexahedron.
virtual bool extend_by_point (const LPoint3f &point)
 Extends the volume to include the indicated point.
virtual bool extend_by_sphere (const BoundingSphere *sphere)
 Double-dispatch support: called by extend_other() when the type we're extending by is known to be a sphere.
virtual bool extend_other (BoundingVolume *other) const

Friends

class BoundingSphere

Detailed Description

An axis-aligned bounding box; that is, a minimum and maximum coordinate triple.

This box is always axis-aligned. If you need a more general bounding box, try BoundingHexahedron.

Definition at line 31 of file boundingBox.h.


Constructor & Destructor Documentation

BoundingBox::BoundingBox ( ) [inline]

Constructs an empty box object.

Definition at line 22 of file boundingBox.I.

BoundingBox::BoundingBox ( const LPoint3f min,
const LPoint3f max 
) [inline]

Constructs a specific box object.

Definition at line 31 of file boundingBox.I.

References LVecBase3f::is_nan().


Member Function Documentation

bool BoundingBox::around_boxes ( const BoundingVolume **  first,
const BoundingVolume **  last 
) [protected, virtual]

Double-dispatch support: called by around_other() when the type of the first element in the list is known to be a nonempty box.

Reimplemented from BoundingVolume.

Definition at line 367 of file boundingBox.cxx.

bool BoundingBox::around_hexahedrons ( const BoundingVolume **  first,
const BoundingVolume **  last 
) [protected, virtual]

Double-dispatch support: called by around_other() when the type of the first element in the list is known to be a nonempty hexahedron.

Reimplemented from BoundingVolume.

Definition at line 378 of file boundingBox.cxx.

bool BoundingBox::around_points ( const LPoint3f first,
const LPoint3f last 
) [protected, virtual]

Puts the volume around the indicated list of points, identified by an STL-style begin/end list.

Reimplemented from GeometricBoundingVolume.

Definition at line 287 of file boundingBox.cxx.

References LVecBase3f::is_nan().

bool BoundingBox::around_spheres ( const BoundingVolume **  first,
const BoundingVolume **  last 
) [protected, virtual]

Double-dispatch support: called by around_other() when the type of the first element in the list is known to be a nonempty sphere.

Reimplemented from BoundingVolume.

Definition at line 356 of file boundingBox.cxx.

const BoundingBox * BoundingBox::as_bounding_box ( ) const [virtual]

Virtual downcast method.

Returns this object as a pointer of the indicated type, if it is in fact that type. Returns NULL if it is not that type.

Reimplemented from BoundingVolume.

Definition at line 147 of file boundingBox.cxx.

int BoundingBox::contains_box ( const BoundingBox box) const [protected, virtual]

Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a box.

Reimplemented from BoundingVolume.

Definition at line 561 of file boundingBox.cxx.

References get_maxq(), get_minq(), BoundingVolume::is_empty(), and BoundingVolume::is_infinite().

int BoundingBox::contains_hexahedron ( const BoundingHexahedron hexahedron) const [protected, virtual]

Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a hexahedron.

Reimplemented from BoundingVolume.

Definition at line 594 of file boundingBox.cxx.

References BoundingHexahedron::contains_box().

int BoundingBox::contains_line ( const BoundingLine line) const [protected, virtual]

Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a line.

Reimplemented from BoundingVolume.

Definition at line 615 of file boundingBox.cxx.

References BoundingLine::contains_box().

int BoundingBox::contains_lineseg ( const LPoint3f a,
const LPoint3f b 
) const [protected, virtual]

Tests whether the volume contains the indicated line segment.

Reimplemented from GeometricBoundingVolume.

Definition at line 456 of file boundingBox.cxx.

References contains_point(), BoundingVolume::is_empty(), BoundingVolume::is_infinite(), and LVecBase3f::is_nan().

int BoundingBox::contains_plane ( const BoundingPlane plane) const [protected, virtual]

Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a plane.

Reimplemented from BoundingVolume.

Definition at line 627 of file boundingBox.cxx.

References BoundingPlane::contains_box().

int BoundingBox::contains_point ( const LPoint3f point) const [protected, virtual]

Tests whether the volume contains the indicated point.

Reimplemented from GeometricBoundingVolume.

Definition at line 430 of file boundingBox.cxx.

References BoundingVolume::is_empty(), BoundingVolume::is_infinite(), and LVecBase3f::is_nan().

Referenced by contains_lineseg().

int BoundingBox::contains_sphere ( const BoundingSphere sphere) const [protected, virtual]

Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a sphere.

Reimplemented from BoundingVolume.

Definition at line 549 of file boundingBox.cxx.

Referenced by BoundingSphere::contains_box().

bool BoundingBox::extend_by_box ( const BoundingBox box) [protected, virtual]

Double-dispatch support: called by extend_other() when the type we're extending by is known to be a box.

Reimplemented from BoundingVolume.

Definition at line 222 of file boundingBox.cxx.

References BoundingVolume::is_empty(), and BoundingVolume::is_infinite().

bool BoundingBox::extend_by_hexahedron ( const BoundingHexahedron hexahedron) [protected, virtual]

Double-dispatch support: called by extend_other() when the type we're extending by is known to be a hexahedron.

Reimplemented from BoundingVolume.

Definition at line 248 of file boundingBox.cxx.

bool BoundingBox::extend_by_point ( const LPoint3f point) [protected, virtual]

Extends the volume to include the indicated point.

Returns true if possible, false if not.

Reimplemented from GeometricBoundingVolume.

Definition at line 190 of file boundingBox.cxx.

References BoundingVolume::is_empty(), BoundingVolume::is_infinite(), and LVecBase3f::is_nan().

bool BoundingBox::extend_by_sphere ( const BoundingSphere sphere) [protected, virtual]

Double-dispatch support: called by extend_other() when the type we're extending by is known to be a sphere.

Reimplemented from BoundingVolume.

Definition at line 212 of file boundingBox.cxx.

const LPoint3f & BoundingBox::get_maxq ( ) const [inline]

An inline accessor for the maximum value.

get_max() would also work, but it is a virtual non-inline method.

Definition at line 64 of file boundingBox.I.

References BoundingVolume::is_empty(), and BoundingVolume::is_infinite().

Referenced by BoundingLine::contains_box(), BoundingHexahedron::contains_box(), contains_box(), BoundingPlane::contains_box(), and BoundingSphere::extend_by_box().

const LPoint3f & BoundingBox::get_minq ( ) const [inline]

An inline accessor for the minimum value.

get_min() would also work, but it is a virtual non-inline method.

Definition at line 50 of file boundingBox.I.

References BoundingVolume::is_empty(), and BoundingVolume::is_infinite().

Referenced by BoundingLine::contains_box(), BoundingHexahedron::contains_box(), contains_box(), BoundingPlane::contains_box(), and BoundingSphere::extend_by_box().

int BoundingBox::get_num_planes ( ) const [inline]

Returns 6: the number of faces of a rectangular solid.

Definition at line 101 of file boundingBox.I.

int BoundingBox::get_num_points ( ) const [inline]

Returns 8: the number of vertices of a rectangular solid.

Definition at line 76 of file boundingBox.I.

Planef BoundingBox::get_plane ( int  n) const [inline]

Returns the nth face of the rectangular solid.

Definition at line 111 of file boundingBox.I.

References get_point().

LPoint3f BoundingBox::get_point ( int  n) const [inline]

Returns the nth vertex of the rectangular solid.

Definition at line 86 of file boundingBox.I.

References LPoint3f::zero().

Referenced by BoundingPlane::contains_box(), BoundingHexahedron::contains_box(), BoundingSphere::extend_by_box(), and get_plane().

static void BoundingBox::init_type ( ) [inline, static]

This function is declared non-inline to work around a compiler bug in g++ 2.96.

Making it inline seems to cause problems in the optimizer.

Reimplemented from FiniteBoundingVolume.

Definition at line 109 of file boundingBox.h.

References FiniteBoundingVolume::init_type().


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