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CollisionHandlerQueue Class Reference

A special kind of CollisionHandler that does nothing except remember the CollisionEntries detected the last pass. More...

#include <collisionHandlerQueue.h>

Inheritance diagram for CollisionHandlerQueue:

List of all members.

Public Member Functions
	CollisionHandlerQueue ()
virtual void	begin_group ()
	Will be called by the CollisionTraverser before a new traversal is begun.
virtual void	add_entry (CollisionEntry *entry)
	Called between a begin_group() ..
void	sort_entries ()
	Sorts all the detected collisions front-to-back by from_intersection_point() so that those intersection points closest to the collider's origin (e.g., the center of the CollisionSphere, or the point_a of a CollisionSegment) appear first.
void	clear_entries ()
	Removes all the entries from the queue.
int	get_num_entries () const
	Returns the number of CollisionEntries detected last pass.
CollisionEntry *	get_entry (int n) const
	Returns the nth CollisionEntry detected last pass.
virtual TypeHandle	get_type () const
virtual TypeHandle	force_init_type ()
virtual bool	end_group ()
	Called by the CollisionTraverser at the completion of all collision detections for this traversal.
int	get_type_index () const
	Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.
bool	is_of_type (TypeHandle handle) const
	Returns true if the current object is or derives from the indicated type.
bool	is_exact_type (TypeHandle handle) const
	Returns true if the current object is the indicated type exactly.
int	get_ref_count () const
	Returns the current reference count.
int	ref () const
	Explicitly increments the reference count.
int	unref () const
	Explicitly decrements the reference count.
void	test_ref_count_integrity () const
	Does some easy checks to make sure that the reference count isn't completely bogus.
Static Public Member Functions
TypeHandle	get_class_type ()
void	init_type ()
Private Types
typedef pvector< PointerTo< CollisionEntry > >	Entries
Private Attributes
Entries	_entries
Static Private Attributes
TypeHandle	_type_handle

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Detailed Description

A special kind of CollisionHandler that does nothing except remember the CollisionEntries detected the last pass.

This set of CollisionEntries may then be queried by the calling function. It's primarily useful when a simple intersection test is being made, e.g. for picking from the window.

Definition at line 47 of file collisionHandlerQueue.h.

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Member Typedef Documentation

typedef pvector< PointerTo< CollisionEntry > > CollisionHandlerQueue::Entries [private]

Definition at line 63 of file collisionHandlerQueue.h.

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Constructor & Destructor Documentation

CollisionHandlerQueue::CollisionHandlerQueue (   )

Definition at line 53 of file collisionHandlerQueue.cxx. References _entries.

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Member Function Documentation

void CollisionHandlerQueue::add_entry (  CollisionEntry *  entry  )  [virtual]

Called between a begin_group() .. end_group() sequence for each collision that is detected. Reimplemented from CollisionHandler. Definition at line 86 of file collisionHandlerQueue.cxx. References _entries, and nassertv.

void CollisionHandlerQueue::begin_group (   )  [virtual]

Will be called by the CollisionTraverser before a new traversal is begun. It instructs the handler to reset itself in preparation for a number of CollisionEntries to be sent. Reimplemented from CollisionHandler. Definition at line 71 of file collisionHandlerQueue.cxx. References _entries, nassertv, and NULL.

void CollisionHandlerQueue::clear_entries (   )

Removes all the entries from the queue. Definition at line 145 of file collisionHandlerQueue.cxx.

bool CollisionHandler::end_group (   )  [virtual, inherited]

Called by the CollisionTraverser at the completion of all collision detections for this traversal. It should do whatever finalization is required for the handler. The return value is normally true, but if this returns value, the CollisionTraverser will remove the handler from its list, allowing the CollisionHandler itself to determine when it is no longer needed. Reimplemented in CollisionHandlerEvent, and CollisionHandlerPhysical. Definition at line 83 of file collisionHandler.cxx.

virtual TypeHandle CollisionHandlerQueue::force_init_type (  void   )  [inline, virtual]

Reimplemented from CollisionHandler. Definition at line 78 of file collisionHandlerQueue.h.

TypeHandle CollisionHandlerQueue::get_class_type (  void   )  [inline, static]

Reimplemented from CollisionHandler. Definition at line 67 of file collisionHandlerQueue.h. References CollisionHandler::get_class_type(), and CollisionHandler::init_type().

CollisionEntry * CollisionHandlerQueue::get_entry (  int  n  )  const

Returns the nth CollisionEntry detected last pass. Definition at line 173 of file collisionHandlerQueue.cxx.

int CollisionHandlerQueue::get_num_entries (   )  const

Returns the number of CollisionEntries detected last pass. Definition at line 160 of file collisionHandlerQueue.cxx.

int ReferenceCount::get_ref_count (   )  const [inline, inherited]

Returns the current reference count. Definition at line 183 of file referenceCount.I. Referenced by RenderState::determine_bin_index(), RenderEffects::determine_show_bounds(), FontPool::ns_garbage_collect(), TexturePool::ns_garbage_collect(), MaterialPool::ns_get_material(), and TexturePool::ns_release_texture().

virtual TypeHandle CollisionHandlerQueue::get_type (  void   )  const [inline, virtual]

Reimplemented from CollisionHandler. Definition at line 75 of file collisionHandlerQueue.h.

int TypedObject::get_type_index (   )  const [inline, 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(). Definition at line 71 of file typedObject.I. References TypeHandle::get_name(), TypedObject::get_type(), and INLINE.

void CollisionHandlerQueue::init_type (  void   )  [inline, static]

Reimplemented from CollisionHandler. Definition at line 70 of file collisionHandlerQueue.h.

bool TypedObject::is_exact_type (  TypeHandle  handle  )  const [inline, inherited]

Returns true if the current object is the indicated type exactly. Definition at line 101 of file typedObject.I. Referenced by PT(), and CollisionNode::xform().

bool TypedObject::is_of_type (  TypeHandle  handle  )  const [inline, inherited]

Returns true if the current object is or derives from the indicated type. Definition at line 86 of file typedObject.I. Referenced by EggMaterialCollection::collapse_equivalent_materials(), EggTextureCollection::collapse_equivalent_textures(), DeferredNodeProperty::compose(), AnimBundleMaker::create_s_channel(), CharacterMaker::create_slider(), ProjectionScreen::cull_callback(), DataNode::define_output(), EggNode::determine_draw_order(), CharacterMaker::egg_to_index(), EggGroupUniquifier::EggGroupUniquifier(), EggPoolUniquifier::EggPoolUniquifier(), EggGroupNode::find_textures(), StaticTextFont::get_glyph(), EggMaterialCollection::insert_materials(), EggTextureCollection::insert_textures(), CharacterJoint::make_copy(), PT(), EggGroupNode::r_flatten_transforms(), EggGroupNode::r_transform_vertices(), EggGroupNode::recompute_polygon_normals(), CollisionLevelState::reserve(), PandaFramework::reset_frame_rate(), PandaFramework::set_texture(), EggGroupNode::steal_children(), and DataGraphTraverser::traverse().

int ReferenceCount::ref (   )  const [inline, 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. The return value is the new reference count. Definition at line 225 of file referenceCount.I. Referenced by ClientDevice::ClientDevice(), EggGroupNode::find_textures(), EggGroupNode::r_apply_texmats(), EggGroupNode::r_flatten_transforms(), and EggGroupNode::reverse_vertex_ordering().

void CollisionHandlerQueue::sort_entries (   )

Sorts all the detected collisions front-to-back by from_intersection_point() so that those intersection points closest to the collider's origin (e.g., the center of the CollisionSphere, or the point_a of a CollisionSegment) appear first. Definition at line 108 of file collisionHandlerQueue.cxx.

void ReferenceCount::test_ref_count_integrity (   )  const [inline, inherited]

Does some easy checks to make sure that the reference count isn't completely bogus. Definition at line 328 of file referenceCount.I. References INLINE. Referenced by EggNode::determine_bin(), and ReferenceCount::~ReferenceCount().

int ReferenceCount::unref (   )  const [inline, 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; plus, we don't have a virtual destructor anyway.) 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 the new reference count. Definition at line 293 of file referenceCount.I. References INLINE. Referenced by RenderState::determine_bin_index(), and RenderEffects::determine_show_bounds().

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Member Data Documentation

Entries CollisionHandlerQueue::_entries [private]

Definition at line 64 of file collisionHandlerQueue.h. Referenced by add_entry(), begin_group(), and CollisionHandlerQueue().

TypeHandle CollisionHandlerQueue::_type_handle [static, private]

Reimplemented from CollisionHandler. Definition at line 25 of file collisionHandlerQueue.cxx.

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

• panda/src/collide/collisionHandlerQueue.h
• panda/src/collide/collisionHandlerQueue.cxx

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