This special bounding volume is the intersection of all of its constituent bounding volumes. More...

#include "intersectionBoundingVolume.h"

Inheritance diagram for IntersectionBoundingVolume:

Public Member Functions
	IntersectionBoundingVolume ()
	Constructs an empty intersection.
	IntersectionBoundingVolume (const IntersectionBoundingVolume &copy)
void	add_component (const GeometricBoundingVolume *component)
	Adds a new component to the volume.
void	clear_components ()
	Removes all components from the volume.
virtual TypeHandle	force_init_type ()
virtual LPoint3	get_approx_center () const
const GeometricBoundingVolume *	get_component (int n) const
	Returns the nth component in the intersection.
int	get_num_components () const
	Returns the number of components in the intersection.
virtual TypeHandle	get_type () const
virtual BoundingVolume *	make_copy () const
	MAKE_SEQ (get_components, get_num_components, get_component)
virtual void	output (ostream &out) const
virtual void	write (ostream &out, int indent_level) 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_other (BoundingVolume other, const BoundingVolume first, const BoundingVolume *last) const
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_finite (const FiniteBoundingVolume *volume) const
	Generic handler for a FiniteBoundingVolume.
virtual int	contains_geometric (const GeometricBoundingVolume *volume) const
	Generic handler for a GeometricBoundingVolume.
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_intersection (const IntersectionBoundingVolume *intersection) const
	Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be an intersection object.
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 int	contains_union (const UnionBoundingVolume *unionv) const
	Double-dispatch support: called by contains_other() when the type we're testing for intersection is known to be a union object.
virtual bool	extend_other (BoundingVolume *other) const
int	other_contains_intersection (const BoundingVolume *other) const
	Generic reverse-direction comparison.
Friends
class	BoundingVolume

Detailed Description

This special bounding volume is the intersection of all of its constituent bounding volumes.

A point is defined to be within an IntersectionBoundingVolume if it is within all of its component bounding volumes.

Definition at line 32 of file intersectionBoundingVolume.h.

Constructor & Destructor Documentation

IntersectionBoundingVolume::IntersectionBoundingVolume ( ) [inline]

Constructs an empty intersection.

Definition at line 23 of file intersectionBoundingVolume.I.

Member Function Documentation

void IntersectionBoundingVolume::add_component ( const GeometricBoundingVolume * component )

Adds a new component to the volume.

This does not necessarily increase the total number of components by one, and you may or may not be able to find this component in the volume by a subsequent call to get_component(); certain optimizations may prevent the component from being added, or have other unexpected effects on the total set of components.

Definition at line 149 of file intersectionBoundingVolume.cxx.

References GeometricBoundingVolume::contains(), BoundingVolume::is_empty(), TypedObject::is_exact_type(), and BoundingVolume::is_infinite().

void IntersectionBoundingVolume::clear_components ( )

Removes all components from the volume.

Definition at line 132 of file intersectionBoundingVolume.cxx.

int IntersectionBoundingVolume::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 351 of file intersectionBoundingVolume.cxx.

int IntersectionBoundingVolume::contains_finite ( const FiniteBoundingVolume * volume ) const [protected, virtual]

Generic handler for a FiniteBoundingVolume.

Reimplemented from BoundingVolume.

Definition at line 517 of file intersectionBoundingVolume.cxx.

int IntersectionBoundingVolume::contains_geometric ( const GeometricBoundingVolume * volume ) const [protected, virtual]

Generic handler for a GeometricBoundingVolume.

Reimplemented from BoundingVolume.

Definition at line 543 of file intersectionBoundingVolume.cxx.

int IntersectionBoundingVolume::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 379 of file intersectionBoundingVolume.cxx.

int IntersectionBoundingVolume::contains_intersection ( const IntersectionBoundingVolume * intersection ) const [protected, virtual]

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

Reimplemented from BoundingVolume.

Definition at line 491 of file intersectionBoundingVolume.cxx.

int IntersectionBoundingVolume::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 407 of file intersectionBoundingVolume.cxx.

int IntersectionBoundingVolume::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 293 of file intersectionBoundingVolume.cxx.

References LVecBase3f::is_nan().

int IntersectionBoundingVolume::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 435 of file intersectionBoundingVolume.cxx.

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

Tests whether the volume contains the indicated point.

Reimplemented from GeometricBoundingVolume.

Definition at line 265 of file intersectionBoundingVolume.cxx.

References LVecBase3f::is_nan().

int IntersectionBoundingVolume::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 323 of file intersectionBoundingVolume.cxx.

int IntersectionBoundingVolume::contains_union ( const UnionBoundingVolume * unionv ) const [protected, virtual]

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

Reimplemented from BoundingVolume.

Definition at line 463 of file intersectionBoundingVolume.cxx.

const GeometricBoundingVolume * IntersectionBoundingVolume::get_component ( int n ) const [inline]

Returns the nth component in the intersection.

Definition at line 43 of file intersectionBoundingVolume.I.

int IntersectionBoundingVolume::get_num_components ( ) const [inline]

Returns the number of components in the intersection.

Definition at line 33 of file intersectionBoundingVolume.I.

static void IntersectionBoundingVolume::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 GeometricBoundingVolume.

Definition at line 85 of file intersectionBoundingVolume.h.

References GeometricBoundingVolume::init_type().

int IntersectionBoundingVolume::other_contains_intersection ( const BoundingVolume * volume ) const [protected]

Generic reverse-direction comparison.

Called by BoundingVolumes that do not implement contains_intersection() explicitly. This returns the test of whether the other volume contains this volume.

Definition at line 573 of file intersectionBoundingVolume.cxx.

References BoundingVolume::contains().

Referenced by BoundingVolume::contains_intersection().

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

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

Public Member Functions

Static Public Member Functions

Protected Member Functions

Friends

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation