This defines a bounding convex hexahedron. More...

#include "boundingHexahedron.h"

Inheritance diagram for BoundingHexahedron:

Public Member Functions
	BoundingHexahedron (const LFrustum &frustum, bool is_ortho, CoordinateSystem cs=CS_default)
	BoundingHexahedron (const LPoint3 &fll, const LPoint3 &flr, const LPoint3 &fur, const LPoint3 &ful, const LPoint3 &nll, const LPoint3 &nlr, const LPoint3 &nur, const LPoint3 &nul)
virtual const BoundingHexahedron *	as_bounding_hexahedron () const
	Virtual downcast method.
virtual TypeHandle	force_init_type ()
virtual LPoint3	get_approx_center () const
virtual LPoint3	get_max () const
virtual LPoint3	get_min () const
int	get_num_planes () const
	Returns 6: the number of faces of a hexahedron.
int	get_num_points () const
	Returns 8: the number of vertices of a hexahedron.
LPlane	get_plane (int n) const
	Returns the nth face of the hexahedron.
LPoint3	get_point (int n) const
	Returns the nth vertex of the hexahedron.
virtual TypeHandle	get_type () const
virtual BoundingVolume *	make_copy () const
	MAKE_SEQ (get_points, get_num_points, get_point)
	MAKE_SEQ (get_planes, get_num_planes, get_plane)
virtual void	output (ostream &out) const
virtual void	write (ostream &out, int indent_level=0) 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_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_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_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_other (BoundingVolume *other) const
Friends
class	BoundingBox
class	BoundingSphere

Detailed Description

This defines a bounding convex hexahedron.

It is typically used to represent a frustum, but may represent any enclosing convex hexahedron, including simple boxes. However, if all you want is an axis-aligned bounding box, you may be better off with the simpler BoundingBox class.

Definition at line 36 of file boundingHexahedron.h.

Member Function Documentation

const BoundingHexahedron * BoundingHexahedron::as_bounding_hexahedron ( ) 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 211 of file boundingHexahedron.cxx.

int BoundingHexahedron::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 345 of file boundingHexahedron.cxx.

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

Referenced by BoundingBox::contains_hexahedron().

int BoundingHexahedron::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 400 of file boundingHexahedron.cxx.

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

int BoundingHexahedron::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 279 of file boundingHexahedron.cxx.

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

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

Tests whether the volume contains the indicated point.

Reimplemented from GeometricBoundingVolume.

Definition at line 253 of file boundingHexahedron.cxx.

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

int BoundingHexahedron::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 310 of file boundingHexahedron.cxx.

References BoundingVolume::is_empty().

Referenced by BoundingSphere::contains_hexahedron().

int BoundingHexahedron::get_num_planes ( ) const [inline]

Returns 6: the number of faces of a hexahedron.

Definition at line 52 of file boundingHexahedron.I.

int BoundingHexahedron::get_num_points ( ) const [inline]

Returns 8: the number of vertices of a hexahedron.

Definition at line 31 of file boundingHexahedron.I.

LPlane BoundingHexahedron::get_plane ( int n ) const [inline]

Returns the nth face of the hexahedron.

Definition at line 62 of file boundingHexahedron.I.

LPoint3 BoundingHexahedron::get_point ( int n ) const [inline]

Returns the nth vertex of the hexahedron.

Definition at line 41 of file boundingHexahedron.I.

References LPoint3f::zero().

Referenced by BoundingPlane::contains_hexahedron(), contains_hexahedron(), and PortalClipper::draw_hexahedron().

static void BoundingHexahedron::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 103 of file boundingHexahedron.h.

References FiniteBoundingVolume::init_type().

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

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

Public Member Functions

Static Public Member Functions

Protected Member Functions

Friends

Detailed Description

Member Function Documentation