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BoundingSphere Class Reference

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

#include "boundingSphere.h"

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

List of all members.

Public Member Functions

 BoundingSphere ()
 Constructs an empty sphere.
 BoundingSphere (const LPoint3 &center, PN_stdfloat radius)
 Constructs a specific sphere.
virtual const BoundingSphereas_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 BoundingVolumemake_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]
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:
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