This defines a bounding sphere, consisting of a center and a radius. More...

#include "boundingSphere.h"

Inheritance diagram for BoundingSphere:

Public Member Functions
	BoundingSphere ()
	Constructs an empty sphere.
	BoundingSphere (const LPoint3 &center, PN_stdfloat radius)
	Constructs a specific sphere.
virtual const BoundingSphere *	as_bounding_sphere () const
	Virtual downcast method.
virtual TypeHandle	force_init_type ()
virtual LPoint3	get_approx_center () const
LPoint3	get_center () const
virtual LPoint3	get_max () const
virtual LPoint3	get_min () const
PN_stdfloat	get_radius () const
virtual TypeHandle	get_type () const
virtual PN_stdfloat	get_volume () const
virtual BoundingVolume *	make_copy () const
virtual void	output (ostream &out) const
virtual void	xform (const LMatrix4 &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_finite (const BoundingVolume first, const BoundingVolume last)
	Generic handler for a FiniteBoundingVolume.
virtual bool	around_other (BoundingVolume other, const BoundingVolume first, const BoundingVolume *last) const
virtual bool	around_points (const LPoint3 first, const LPoint3 last)
	Puts the volume around the indicated list of points, identified by an STL-style begin/end list.
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.
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 LPoint3 &a, const LPoint3 &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 LPoint3 &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.
virtual bool	extend_by_finite (const FiniteBoundingVolume *volume)
	Generic handler for a FiniteBoundingVolume.
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 LPoint3 &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	BoundingHexahedron

Detailed Description

This defines a bounding sphere, consisting of a center and a radius.

It is always a sphere, and never an ellipsoid or other quadric.

Definition at line 28 of file boundingSphere.h.

Constructor & Destructor Documentation

BoundingSphere::BoundingSphere ( ) [inline]

Constructs an empty sphere.

Definition at line 22 of file boundingSphere.I.

BoundingSphere::BoundingSphere	(	const LPoint3 &	center,
		PN_stdfloat	radius
	)		`[inline]`

Constructs a specific sphere.

Definition at line 31 of file boundingSphere.I.

References LVecBase3f::is_nan().

Member Function Documentation

bool BoundingSphere::around_finite	(	const BoundingVolume **	first,
		const BoundingVolume **	last
	)		`[protected, virtual]`

Generic handler for a FiniteBoundingVolume.

Reimplemented from BoundingVolume.

Definition at line 393 of file boundingSphere.cxx.

References as_bounding_sphere(), FiniteBoundingVolume::as_finite_bounding_volume(), ReferenceCount::local_object(), and BoundingVolume::set_infinite().

bool BoundingSphere::around_points	(	const LPoint3 *	first,
		const LPoint3 *	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 300 of file boundingSphere.cxx.

References LVecBase3f::is_nan().

const BoundingSphere * BoundingSphere::as_bounding_sphere ( ) 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 152 of file boundingSphere.cxx.

Referenced by around_finite().

int BoundingSphere::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 605 of file boundingSphere.cxx.

References BoundingVolume::contains_sphere().

int BoundingSphere::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 617 of file boundingSphere.cxx.

References BoundingHexahedron::contains_sphere().

int BoundingSphere::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 629 of file boundingSphere.cxx.

References BoundingLine::contains_sphere().

int BoundingSphere::contains_lineseg	(	const LPoint3 &	a,
		const LPoint3 &	b
	)		const `[protected, virtual]`

Tests whether the volume contains the indicated line segment.

Reimplemented from GeometricBoundingVolume.

Definition at line 510 of file boundingSphere.cxx.

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

int BoundingSphere::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 641 of file boundingSphere.cxx.

References BoundingPlane::contains_sphere().

int BoundingSphere::contains_point ( const LPoint3 & point ) const [protected, virtual]

Tests whether the volume contains the indicated point.

Reimplemented from GeometricBoundingVolume.

Definition at line 487 of file boundingSphere.cxx.

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

Referenced by contains_lineseg().

int BoundingSphere::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 575 of file boundingSphere.cxx.

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

bool BoundingSphere::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 240 of file boundingSphere.cxx.

References BoundingBox::get_maxq(), BoundingBox::get_minq(), BoundingBox::get_point(), and BoundingVolume::is_empty().

Referenced by extend_by_finite(), and extend_by_hexahedron().

bool BoundingSphere::extend_by_finite ( const FiniteBoundingVolume * volume ) [protected, virtual]

Generic handler for a FiniteBoundingVolume.

Reimplemented from BoundingVolume.

Definition at line 286 of file boundingSphere.cxx.

References extend_by_box(), BoundingVolume::is_empty(), and ReferenceCount::local_object().

bool BoundingSphere::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 272 of file boundingSphere.cxx.

References extend_by_box(), BoundingVolume::is_empty(), and ReferenceCount::local_object().

bool BoundingSphere::extend_by_point ( const LPoint3 & point ) [protected, virtual]

Extends the volume to include the indicated point.

Returns true if possible, false if not.

Reimplemented from GeometricBoundingVolume.

Definition at line 195 of file boundingSphere.cxx.

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

bool BoundingSphere::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 218 of file boundingSphere.cxx.

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

static void BoundingSphere::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 89 of file boundingSphere.h.

References FiniteBoundingVolume::init_type().

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

panda/src/mathutil/boundingSphere.h
panda/src/mathutil/boundingSphere.cxx
panda/src/mathutil/boundingSphere.I

Public Member Functions

Static Public Member Functions

Protected Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation