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Public Types | Public Member Functions | Static Public Member Functions

OmniBoundingVolume Class Reference

This is a special kind of GeometricBoundingVolume that fills all of space. More...

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

List of all members.

Public Types

enum  BoundsType { BTDefault = 0, BTBest = 1, BTSphere = 2, BTBox = 3 }
enum  IntersectionFlags {
  IFNoIntersection = 0, IFPossible = 1, IFSome = 2, IFAll = 4,
  IFDontUnderstand = 8
}

Public Member Functions

 OmniBoundingVolume ()
bool around (Point3 const first, Point3 const last)
 Resets the volume to enclose only the points indicated.
int contains (Point3 const a, Point3 const b)
 Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated line segment.
int contains (BoundingVolume const vol)
 Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated volume.
int contains (GeometricBoundingVolume const vol)
 Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated volume.
int contains (Point3 const point)
 Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated point.
bool extendBy (BoundingVolume const vol)
 Increases the size of the volume to include the given volume.
bool extendBy (GeometricBoundingVolume const vol)
 Increases the size of the volume to include the given volume.
bool extendBy (Point3 const point)
 Increases the size of the volume to include the given point.
Point3 getApproxCenter ()
int getRefCount ()
 Returns the current reference count.
TypeHandle getType ()
int getTypeIndex ()
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.
bool isEmpty ()
 Any kind of volume might be empty.
bool isExactType (TypeHandle handle)
 Returns true if the current object is the indicated type exactly.
bool isInfinite ()
 The other side of the empty coin is an infinite volume.
bool isOfType (TypeHandle handle)
 Returns true if the current object is or derives from the indicated type.
BoundingVolume makeCopy ()
 output (ostream out)
 ref ()
 Explicitly increments the reference count.
 setInfinite ()
 Marks the volume as infinite, even if it is normally finite.
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus.
bool testRefCountNonzero ()
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus.
bool unref ()
 Explicitly decrements the reference count.
 write (ostream out, int indent_level)
 write (ostream out)
 xform (Mat4 const mat)

Static Public Member Functions

static TypeHandle getClassType ()

Detailed Description

This is a special kind of GeometricBoundingVolume that fills all of space.


Member Enumeration Documentation

enum BoundsType [inherited]
Enumerator:
BTDefault 
BTBest 
BTSphere 
BTBox 
enum IntersectionFlags [inherited]
Enumerator:
IFNoIntersection 
IFPossible 
IFSome 
IFAll 
IFDontUnderstand 

Constructor & Destructor Documentation


Member Function Documentation

bool around ( Point3 const  first,
Point3 const  last 
) [inherited]

Resets the volume to enclose only the points indicated.

int contains ( Point3 const  a,
Point3 const  b 
) [inherited]

Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated line segment.

int contains ( BoundingVolume const  vol) [inherited]

Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated volume.

int contains ( GeometricBoundingVolume const  vol) [inherited]

Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated volume.

int contains ( Point3 const  point) [inherited]

Returns the appropriate set of IntersectionFlags to indicate the amount of intersection with the indicated point.

bool extendBy ( GeometricBoundingVolume const  vol) [inherited]

Increases the size of the volume to include the given volume.

bool extendBy ( BoundingVolume const  vol) [inherited]

Increases the size of the volume to include the given volume.

bool extendBy ( Point3 const  point) [inherited]

Increases the size of the volume to include the given point.

Point3 getApproxCenter ( ) [inherited]
static TypeHandle getClassType ( ) [static]

Reimplemented from GeometricBoundingVolume.

int getRefCount ( ) [inherited]

Returns the current reference count.

TypeHandle getType ( ) [inherited]

Reimplemented in AnimChannelBase.

int getTypeIndex ( ) [inherited]

Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.

This is equivalent to get_type().get_index().

bool isEmpty ( ) [inherited]

Any kind of volume might be empty.

This is a degenerate volume that contains no points; it's not the same as, for instance, a sphere with radius zero, since that contains one point (the center). It intersects with no other volumes.

bool isExactType ( TypeHandle  handle) [inherited]

Returns true if the current object is the indicated type exactly.

bool isInfinite ( ) [inherited]

The other side of the empty coin is an infinite volume.

This is a degenerate state of a normally finite volume that contains all points. (Note that some kinds of infinite bounding volumes, like binary separating planes, do not contain all points and thus correctly return is_infinite() == false, even though they are technically infinite. This is a special case of the word 'infinite' meaning the volume covers all points in space.)

It completely intersects with all other volumes except empty volumes.

bool isOfType ( TypeHandle  handle) [inherited]

Returns true if the current object is or derives from the indicated type.

BoundingVolume makeCopy ( ) [inherited]
output ( ostream  out) [inherited]
ref ( ) [inherited]

Explicitly increments the reference count.

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

setInfinite ( ) [inherited]

Marks the volume as infinite, even if it is normally finite.

You can think of this as an infinite extend_by() operation.

bool testRefCountIntegrity ( ) [inherited]

Does some easy checks to make sure that the reference count isn't completely bogus.

Returns true if ok, false otherwise.

Reimplemented in NodeReferenceCount, CachedTypedWritableReferenceCount, and NodeCachedReferenceCount.

bool testRefCountNonzero ( ) [inherited]

Does some easy checks to make sure that the reference count isn't zero, or completely bogus.

Returns true if ok, false otherwise.

bool unref ( ) [inherited]

Explicitly decrements the reference count.

Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic.) However, see the helper function unref_delete().

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

The return value is true if the new reference count is nonzero, false if it is zero.

Reimplemented in GeomVertexArrayFormat, and GeomVertexFormat.

write ( ostream  out) [inherited]
write ( ostream  out,
int  indent_level 
) [inherited]
xform ( Mat4 const  mat) [inherited]
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