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UnionBoundingVolume Class Reference

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

#include "unionBoundingVolume.h"

Inheritance diagram for UnionBoundingVolume:
GeometricBoundingVolume BoundingVolume TypedReferenceCount TypedObject ReferenceCount MemoryBase MemoryBase

Public Member Functions

 UnionBoundingVolume ()
 Constructs an empty union. More...
 
 UnionBoundingVolume (const UnionBoundingVolume &copy)
 
void add_component (const GeometricBoundingVolume *component)
 Adds a new component to the volume. More...
 
void clear_components ()
 Removes all components from the volume. More...
 
void filter_intersection (const BoundingVolume *volume)
 Removes from the union any components that have no intersection with the indicated volume. More...
 
virtual TypeHandle force_init_type ()
 
virtual LPoint3 get_approx_center () const
 
const GeometricBoundingVolumeget_component (int n) const
 
int get_num_components () const
 
virtual TypeHandle get_type () const
 
virtual BoundingVolumemake_copy () const
 
virtual void output (std::ostream &out) const
 
virtual void write (std::ostream &out, int indent_level) const
 
virtual void xform (const LMatrix4 &mat)
 
- Public Member Functions inherited from GeometricBoundingVolume
bool around (const GeometricBoundingVolume **first, const GeometricBoundingVolume **last)
 Resets the volume to enclose only the volumes indicated. More...
 
bool around (const LPoint3 *first, const LPoint3 *last)
 Resets the volume to enclose only the points indicated. More...
 
virtual GeometricBoundingVolumeas_geometric_bounding_volume () final
 Virtual downcast method. More...
 
virtual const GeometricBoundingVolumeas_geometric_bounding_volume () const final
 Virtual downcast method. More...
 
int contains (const GeometricBoundingVolume *vol) const
 Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated volume. More...
 
int contains (const LPoint3 &point) const
 Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated point. More...
 
int contains (const LPoint3 &a, const LPoint3 &b) const
 Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated line segment. More...
 
bool extend_by (const GeometricBoundingVolume *vol)
 Increases the size of the volume to include the given volume. More...
 
bool extend_by (const LPoint3 &point)
 Increases the size of the volume to include the given point. More...
 
- Public Member Functions inherited from BoundingVolume
bool around (const BoundingVolume **first, const BoundingVolume **last)
 Resets the volume to enclose only the volumes indicated. More...
 
virtual const BoundingBoxas_bounding_box () const
 Virtual downcast method. More...
 
virtual const BoundingHexahedronas_bounding_hexahedron () const
 Virtual downcast method. More...
 
virtual const BoundingLineas_bounding_line () const
 Virtual downcast method. More...
 
virtual const BoundingPlaneas_bounding_plane () const
 Virtual downcast method. More...
 
virtual const BoundingSphereas_bounding_sphere () const
 Virtual downcast method. More...
 
virtual const FiniteBoundingVolumeas_finite_bounding_volume () const
 Virtual downcast method. More...
 
int contains (const BoundingVolume *vol) const
 Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated volume. More...
 
bool extend_by (const BoundingVolume *vol)
 Increases the size of the volume to include the given volume. More...
 
bool is_empty () const
 Any kind of volume might be empty. More...
 
bool is_infinite () const
 The other side of the empty coin is an infinite volume. More...
 
void set_infinite ()
 Marks the volume as infinite, even if it is normally finite. More...
 
- Public Member Functions inherited from TypedReferenceCount
 TypedReferenceCount (const TypedReferenceCount &copy)
 
void operator= (const TypedReferenceCount &copy)
 
- Public Member Functions inherited from TypedObject
 TypedObject (const TypedObject &copy)=default
 
TypedObjectas_typed_object ()
 Returns the object, upcast (if necessary) to a TypedObject pointer. More...
 
const TypedObjectas_typed_object () const
 Returns the object, upcast (if necessary) to a TypedObject pointer. More...
 
int get_best_parent_from_Set (const std::set< int > &) const
 
int get_type_index () const
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. More...
 
bool is_exact_type (TypeHandle handle) const
 Returns true if the current object is the indicated type exactly. More...
 
bool is_of_type (TypeHandle handle) const
 Returns true if the current object is or derives from the indicated type. More...
 
TypedObjectoperator= (const TypedObject &copy)=default
 
- Public Member Functions inherited from ReferenceCount
int get_ref_count () const
 
WeakReferenceListget_weak_list () const
 Returns the WeakReferenceList associated with this ReferenceCount object. More...
 
bool has_weak_list () const
 Returns true if this particular ReferenceCount object has a WeakReferenceList created, false otherwise. More...
 
void local_object ()
 This function should be called, once, immediately after creating a new instance of some ReferenceCount-derived object on the stack. More...
 
void ref () const
 Explicitly increments the reference count. More...
 
bool ref_if_nonzero () const
 Atomically increases the reference count of this object if it is not zero. More...
 
bool test_ref_count_integrity () const
 Does some easy checks to make sure that the reference count isn't completely bogus. More...
 
bool test_ref_count_nonzero () const
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More...
 
virtual bool unref () const
 Explicitly decrements the reference count. More...
 
WeakReferenceListweak_ref ()
 Adds the indicated PointerToVoid as a weak reference to this object. More...
 
void weak_unref ()
 Removes the indicated PointerToVoid as a weak reference to this object. More...
 

Static Public Member Functions

static TypeHandle get_class_type ()
 
static void init_type ()
 
- Static Public Member Functions inherited from GeometricBoundingVolume
static TypeHandle get_class_type ()
 
static void init_type ()
 
- Static Public Member Functions inherited from BoundingVolume
static TypeHandle get_class_type ()
 
static void init_type ()
 
static BoundsType string_bounds_type (const std::string &str)
 Returns the BoundsType corresponding to the indicated string. More...
 
- Static Public Member Functions inherited from TypedReferenceCount
static TypeHandle get_class_type ()
 
static void init_type ()
 
- Static Public Member Functions inherited from TypedObject
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. More...
 
- Static Public Member Functions inherited from ReferenceCount
static TypeHandle get_class_type ()
 
static void init_type ()
 

Public Attributes

 get_component
 Returns the nth component in the union. More...
 
 get_num_components
 Returns the number of components in the union. More...
 
- Public Attributes inherited from TypedObject
 get_type
 
- Public Attributes inherited from ReferenceCount
 get_ref_count
 Returns the current reference count. More...
 

Friends

class BoundingVolume
 

Additional Inherited Members

- Public Types inherited from BoundingVolume
enum  BoundsType {
  BT_default, BT_best, BT_sphere, BT_box,
  BT_fastest
}
 
enum  IntersectionFlags {
  IF_no_intersection = 0, IF_possible = 0x01, IF_some = 0x02, IF_all = 0x04,
  IF_dont_understand = 0x08
}
 

Detailed Description

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

A point is defined to be within a UnionBoundingVolume if it is within any one or more of its component bounding volumes.

Definition at line 29 of file unionBoundingVolume.h.

Constructor & Destructor Documentation

◆ UnionBoundingVolume()

UnionBoundingVolume::UnionBoundingVolume ( )
inline

Constructs an empty union.

Definition at line 18 of file unionBoundingVolume.I.

Member Function Documentation

◆ add_component()

void UnionBoundingVolume::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 130 of file unionBoundingVolume.cxx.

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

◆ clear_components()

void UnionBoundingVolume::clear_components ( )

Removes all components from the volume.

Definition at line 117 of file unionBoundingVolume.cxx.

◆ filter_intersection()

void UnionBoundingVolume::filter_intersection ( const BoundingVolume volume)

Removes from the union any components that have no intersection with the indicated volume.

Definition at line 170 of file unionBoundingVolume.cxx.

Member Data Documentation

◆ get_component

const GeometricBoundingVolume * UnionBoundingVolume::get_component
inline

Returns the nth component in the union.

Definition at line 48 of file unionBoundingVolume.h.

◆ get_num_components

int UnionBoundingVolume::get_num_components
inline

Returns the number of components in the union.

Definition at line 48 of file unionBoundingVolume.h.


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