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CollisionSolid Class Reference

The abstract base class for all things that can collide with other things in the world, and all the things they can collide with (except geometry). More...

#include <collisionSolid.h>

Inheritance diagram for CollisionSolid:

TypedWritableReferenceCount BoundedObject TypedWritable ReferenceCount TypedObject CollisionPlane CollisionRay CollisionSegment CollisionSphere CollisionPolygon List of all members.

Public Types

enum  BoundingVolumeType { BVT_static, BVT_dynamic_sphere }

Public Member Functions

 CollisionSolid ()
 CollisionSolid (const CollisionSolid &copy)
virtual ~CollisionSolid ()
virtual CollisionSolid * make_copy ()=0
virtual LPoint3f get_collision_origin () const=0
void set_tangible (bool tangible)
 Sets the current state of the 'tangible' flag.

bool is_tangible () const
 Returns whether the solid is considered 'tangible' or not.

virtual PointerTo< CollisionEntry > test_intersection (const CollisionEntry &entry) const
 Tests for a collision between this object (which is also the "from" object in the entry) and the "into" object.

virtual void xform (const LMatrix4f &mat)=0
GeomNode * get_viz () const
 Returns a GeomNode that may be rendered to visualize the CollisionSolid.

virtual void output (ostream &out) const
virtual void write (ostream &out, int indent_level=0) const
virtual void write_datagram (BamWriter *manager, Datagram &me)
 Function to write the important information in the particular object to a Datagram.

virtual TypeHandle get_type () const
virtual TypeHandle force_init_type ()
virtual int complete_pointers (TypedWritable **p_list, BamReader *manager)
 Receives an array of pointers, one for each time manager->read_pointer() was called in fillin().

virtual void finalize ()
 Called by the BamReader to perform any final actions needed for setting up the object after all objects have been read and all pointers have been completed.

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.

void set_bound (BoundingVolumeType type)
 Sets the type of the bounding volume that will be dynamically computed for this particular node.

void set_bound (const BoundingVolume &volume)
 Explicitly sets a new bounding volume on this node.

const BoundingVolume & get_bound () const
 Returns the current bounding volume on this node, possibly forcing a recompute.

bool mark_bound_stale ()
 Marks the current bounding volume as stale, so that it will be recomputed later.

void force_bound_stale ()
 Marks the current volume as stale and propagates the effect at least one level, even if it had already been marked stale.

bool is_bound_stale () const
 Returns true if the bound is currently marked stale and will be recomputed the next time get_bound() is called.

void set_final (bool flag)
 Sets the "final" flag on this BoundedObject.

bool is_final () const
 Returns the current state of the "final" flag.


Static Public Member Functions

TypeHandle get_class_type ()
void init_type ()

Static Public Attributes

TypedWritable *const Null = (TypedWritable*)0L

Protected Member Functions

virtual PointerTo< CollisionEntry > test_intersection_from_sphere (const CollisionEntry &entry) const
 This is part of the double-dispatch implementation of test_intersection().

virtual PointerTo< CollisionEntry > test_intersection_from_ray (const CollisionEntry &entry) const
 This is part of the double-dispatch implementation of test_intersection().

virtual PointerTo< CollisionEntry > test_intersection_from_segment (const CollisionEntry &entry) const
 This is part of the double-dispatch implementation of test_intersection().

void mark_viz_stale ()
 Called internally when the visualization may have been compromised by some change to internal state and will need to be recomputed the next time it is rendered.

virtual void fill_viz_geom ()
 Fills the _viz_geom GeomNode up with Geoms suitable for rendering this solid.

ConstPointerTo< RenderState > get_solid_viz_state ()
 Returns a RenderState for rendering collision visualizations in solid.

ConstPointerTo< RenderState > get_wireframe_viz_state ()
 Returns a RenderState for rendering collision visualizations in wireframe.

ConstPointerTo< RenderState > get_other_viz_state ()
 Returns a RenderState for rendering collision visualizations for things that are neither solid nor exactly wireframe, like rays and segments.

void fillin (DatagramIterator &scan, BamReader *manager)
 Function that reads out of the datagram (or asks manager to read) all of the data that is needed to re-create this object and stores it in the appropiate place.

virtual void propagate_stale_bound ()
 Called by BoundedObject::mark_bound_stale(), this should make sure that all bounding volumes that depend on this one are marked stale also.

virtual BoundingVolume * recompute_bound ()
 Recomputes the dynamic bounding volume for this object.

const BoundingVolume * get_bound_ptr () const
 Returns the state of the _bound pointer.

BoundingVolume * set_bound_ptr (BoundingVolume *bound)
 Changes the _bound pointer.


Static Protected Member Functions

void report_undefined_intersection_test (TypeHandle from_type, TypeHandle into_type)
 Outputs a message the first time an intersection test is attempted that isn't defined, and explains a bit about what it means.

void report_undefined_from_intersection (TypeHandle from_type)
 Outputs a message the first time an intersection test is attempted that isn't defined, and explains a bit about what it means.


Protected Attributes

PointerTo< GeomNode > _viz_geom
bool _viz_geom_stale
bool _tangible

Static Private Attributes

TypeHandle _type_handle

Friends

class CollisionSphere
class CollisionRay
class CollisionSegment

Detailed Description

The abstract base class for all things that can collide with other things in the world, and all the things they can collide with (except geometry).

This class and its derivatives really work very similarly to the way BoundingVolume and all of its derivatives work. There's a different subclass for each basic shape of solid, and double-dispatch function calls handle the subset of the N*N intersection tests that we care about.

Definition at line 65 of file collisionSolid.h.

Member Enumeration Documentation

enum BoundedObject::BoundingVolumeType [inherited]
 

Enumeration values:
BVT_static 
BVT_dynamic_sphere 

Definition at line 58 of file boundedObject.h.

Constructor & Destructor Documentation

CollisionSolid::CollisionSolid (   ) 
 

Definition at line 50 of file collisionSolid.cxx.

References _viz_geom_stale.

CollisionSolid::CollisionSolid (  const CollisionSolid &  copy  ) 
 

Definition at line 63 of file collisionSolid.cxx.

CollisionSolid::~CollisionSolid (   )  [virtual]
 

Definition at line 78 of file collisionSolid.cxx.

References get_type(), NULL, and report_undefined_from_intersection().

Member Function Documentation

int TypedWritable::complete_pointers (  TypedWritable **  p_list,
BamReader *  manager
)  [virtual, inherited]
 

Receives an array of pointers, one for each time manager->read_pointer() was called in fillin().

Returns the number of pointers processed.

This is the callback function that is made by the BamReader at some later point, after all of the required pointers have been filled in. It is necessary because there might be forward references in a bam file; when we call read_pointer() in fillin(), the object may not have been read from the file yet, so we do not have a pointer available at that time. Thus, instead of returning a pointer, read_pointer() simply reserves a later callback. This function provides that callback. The calling object is responsible for keeping track of the number of times it called read_pointer() and extracting the same number of pointers out of the supplied vector, and storing them appropriately within the object.

Reimplemented in AnimBundleNode, AnimGroup, PartBundleNode, PartGroup, Character, CharacterJoint, CollisionNode, GeomSprite, PiecewiseCurve, ClipPlaneAttrib, FogAttrib, LensNode, LightAttrib, MaterialAttrib, RenderEffects, RenderState, TextureAttrib, Person, and Child.

Definition at line 94 of file typedWritable.cxx.

Referenced by RenderState::do_invert_compose().

void CollisionSolid::fill_viz_geom (   )  [protected, virtual]
 

Fills the _viz_geom GeomNode up with Geoms suitable for rendering this solid.

Reimplemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 341 of file collisionSolid.cxx.

void CollisionSolid::fillin (  DatagramIterator &  scan,
BamReader *  manager
)  [protected]
 

Function that reads out of the datagram (or asks manager to read) all of the data that is needed to re-create this object and stores it in the appropiate place.

Reimplemented from TypedWritable.

Reimplemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 324 of file collisionSolid.cxx.

References CPT, CullFaceAttrib::M_cull_none, TransparencyAttrib::M_none, RenderModeAttrib::M_wireframe, TransparencyAttrib::make(), RenderModeAttrib::make(), CullFaceAttrib::make(), RenderState::make(), and NULL.

Referenced by CollisionSegment::register_with_read_factory(), and CollisionRay::register_with_read_factory().

void TypedWritable::finalize (  void   )  [virtual, inherited]
 

Called by the BamReader to perform any final actions needed for setting up the object after all objects have been read and all pointers have been completed.

Reimplemented in PartBundle, RenderAttrib, RenderEffect, RenderEffects, RenderState, and TransformState.

Definition at line 112 of file typedWritable.cxx.

Referenced by BamReader::skip_pointer().

void BoundedObject::force_bound_stale (   )  [inline, inherited]
 

Marks the current volume as stale and propagates the effect at least one level, even if it had already been marked stale.

Definition at line 188 of file boundedObject.I.

References BoundedObject::_cycler, BoundedObject::F_final, and INLINE.

Referenced by PandaNode::remove_child().

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

Reimplemented from TypedWritableReferenceCount.

Reimplemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 134 of file collisionSolid.h.

const BoundingVolume & BoundedObject::get_bound (   )  const [inherited]
 

Returns the current bounding volume on this node, possibly forcing a recompute.

A node's bounding volume encloses only the node itself, irrespective of the nodes above or below it in the graph. This is different from the bounding volumes on the arcs, which enclose all geometry below them.

Reimplemented in PandaNode.

Definition at line 59 of file boundedObject.cxx.

Referenced by PandaNode::clear_effect(), PandaNode::get_state(), and CollisionLevelState::reserve().

const BoundingVolume * BoundedObject::get_bound_ptr (   )  const [inline, protected, inherited]
 

Returns the state of the _bound pointer.

To be used only internally by derived classes.

This returns a const pointer only; the bounding volume should not be modified directly, because that might interfere with pipelining. Instead, create a new copy with make_copy(), modify the copy, and set_bound_ptr() with the copy.

Alternatively, if you have just called recompute_bound(), which is guaranteed to reset the pointer, just use the return value from that as a non-const BoundingVolume pointer.

Definition at line 318 of file boundedObject.I.

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

Reimplemented from BoundedObject.

Reimplemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 121 of file collisionSolid.h.

Referenced by CollisionPlane::init_type().

virtual LPoint3f CollisionSolid::get_collision_origin (   )  const [pure virtual]
 

Implemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

ConstPointerTo< RenderState > CollisionSolid::get_other_viz_state (   )  [protected]
 

Returns a RenderState for rendering collision visualizations for things that are neither solid nor exactly wireframe, like rays and segments.

Definition at line 447 of file collisionSolid.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().

ConstPointerTo< RenderState > CollisionSolid::get_solid_viz_state (   )  [protected]
 

Returns a RenderState for rendering collision visualizations in solid.

This automatically returns the appropriate state according to the setting of _tangible.

Definition at line 359 of file collisionSolid.cxx.

References CPT, TransparencyAttrib::M_alpha, CullFaceAttrib::M_cull_clockwise, RenderModeAttrib::M_filled, TransparencyAttrib::make(), RenderModeAttrib::make(), CullFaceAttrib::make(), RenderState::make(), and NULL.

Referenced by CollisionPolygon::test_intersection_from_segment().

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

Reimplemented from TypedWritableReferenceCount.

Reimplemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 131 of file collisionSolid.h.

Referenced by write(), and ~CollisionSolid().

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.

GeomNode * CollisionSolid::get_viz (   )  const
 

Returns a GeomNode that may be rendered to visualize the CollisionSolid.

This is used during the cull traversal to render the CollisionNodes that have been made visible.

Definition at line 118 of file collisionSolid.cxx.

References indent().

Referenced by CollisionNode::combine_with().

ConstPointerTo< RenderState > CollisionSolid::get_wireframe_viz_state (   )  [protected]
 

Returns a RenderState for rendering collision visualizations in wireframe.

This automatically returns the appropriate state according to the setting of _tangible.

Definition at line 404 of file collisionSolid.cxx.

Referenced by CollisionPolygon::test_intersection_from_segment().

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

Reimplemented from BoundedObject.

Reimplemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 124 of file collisionSolid.h.

bool BoundedObject::is_bound_stale (   )  const [inline, inherited]
 

Returns true if the bound is currently marked stale and will be recomputed the next time get_bound() is called.

This function is defined up at the top of this file, because several of the inline functions below reference it.

Definition at line 217 of file boundedObject.I.

References BoundedObject::_cycler, and INLINE.

Referenced by BoundedObject::~BoundedObject().

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 BoundedObject::is_final (   )  const [inline, inherited]
 

Returns the current state of the "final" flag.

Initially, this flag is off (false), but it may be changed by an explicit call to set_final(). See set_final().

Definition at line 280 of file boundedObject.I.

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().

bool CollisionSolid::is_tangible (   )  const [inline]
 

Returns whether the solid is considered 'tangible' or not.

An intangible solid has no effect in a CollisionHandlerPusher (except to throw an event); it's useful for defining 'trigger' planes and spheres, that cause an effect when passed through.

Definition at line 66 of file collisionSolid.I.

virtual CollisionSolid* CollisionSolid::make_copy (   )  [pure virtual]
 

Implemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

bool BoundedObject::mark_bound_stale (   )  [inline, inherited]
 

Marks the current bounding volume as stale, so that it will be recomputed later.

This may have a cascading effect up to the root of all graphs of which the node is a part. Returns true if the setting was changed, or false if it was already marked stale (or if it is a static bounding volume).

Definition at line 162 of file boundedObject.I.

References BoundedObject::_cycler, BoundedObject::F_bound_stale, and INLINE.

Referenced by CollisionSphere::CollisionSphere(), GeomNode::combine_with(), CollisionPlane::get_normal(), PGItem::instance_to_state_def(), CollisionPlane::make_copy(), PGItem::set_active(), CollisionSphere::set_center(), TextNode::set_coordinate_system(), PandaNode::set_effect(), CollisionNode::set_from_collide_mask(), GeomNode::set_geom_state(), CollisionRay::set_origin(), CollisionSegment::set_point_a(), CollisionSphere::test_intersection(), CollisionSegment::test_intersection(), CollisionRay::test_intersection(), and CollisionNode::xform().

void CollisionSolid::mark_viz_stale (   )  [inline, protected]
 

Called internally when the visualization may have been compromised by some change to internal state and will need to be recomputed the next time it is rendered.

Definition at line 85 of file collisionSolid.I.

Referenced by CollisionSphere::CollisionSphere(), CollisionPlane::get_normal(), CollisionPlane::make_copy(), CollisionSphere::set_center(), CollisionRay::set_origin(), CollisionSegment::set_point_a(), CollisionSphere::test_intersection(), CollisionSegment::test_intersection(), and CollisionRay::test_intersection().

void CollisionSolid::output (  ostream &  out  )  const [virtual]
 

Reimplemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 139 of file collisionSolid.cxx.

References NULL.

void BoundedObject::propagate_stale_bound (   )  [protected, virtual, inherited]
 

Called by BoundedObject::mark_bound_stale(), this should make sure that all bounding volumes that depend on this one are marked stale also.

Reimplemented in dDrawable, and PandaNode.

Definition at line 108 of file boundedObject.cxx.

BoundingVolume * BoundedObject::recompute_bound (   )  [protected, virtual, inherited]
 

Recomputes the dynamic bounding volume for this object.

The default behavior is the compute an empty bounding volume; this may be overridden to extend it to create a nonempty bounding volume. However, after calling this function, it is guaranteed that the _bound pointer will not be shared with any other stage of the pipeline, and this new pointer is returned.

Reimplemented in CollisionNode, CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, CollisionSphere, Geom, and PandaNode.

Definition at line 134 of file boundedObject.cxx.

Referenced by CollisionSphere::get_collision_origin().

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 CollisionSolid::report_undefined_from_intersection (  TypeHandle  from_type  )  [static, protected]
 

Outputs a message the first time an intersection test is attempted that isn't defined, and explains a bit about what it means.

Definition at line 276 of file collisionSolid.cxx.

Referenced by ~CollisionSolid().

void CollisionSolid::report_undefined_intersection_test (  TypeHandle  from_type,
TypeHandle  into_type
)  [static, protected]
 

Outputs a message the first time an intersection test is attempted that isn't defined, and explains a bit about what it means.

Definition at line 243 of file collisionSolid.cxx.

References _tangible, and Datagram::add_uint8().

Referenced by write().

void BoundedObject::set_bound (  const BoundingVolume &  volume  )  [inline, inherited]
 

Explicitly sets a new bounding volume on this node.

This will be a static bounding volume that will no longer be recomputed automatically.

Reimplemented in PandaNode.

Definition at line 135 of file boundedObject.I.

References BoundedObject::F_bound_stale.

void BoundedObject::set_bound (  BoundedObject::BoundingVolumeType  type  )  [inline, inherited]
 

Sets the type of the bounding volume that will be dynamically computed for this particular node.

Presently, this should only be BVT_dynamic_sphere.

Definition at line 115 of file boundedObject.I.

BoundingVolume * BoundedObject::set_bound_ptr (  BoundingVolume *  bound  )  [inline, protected, inherited]
 

Changes the _bound pointer.

To be used only internally by derived classes, usually in recompute_bound(). The return value is the same pointer passed in, as a convenience (it will now be reference counted).

Definition at line 340 of file boundedObject.I.

void BoundedObject::set_final (  bool  flag  )  [inline, inherited]
 

Sets the "final" flag on this BoundedObject.

If this is true, than no bounding volume need be tested below it; a positive intersection with this bounding volume is deemed to be a positive intersection with all geometry inside.

This is useful to quickly force a larger bounding volume around a node when the GeomNodes themselves are inaccurate for some reason, without forcing a recompute of every nested bounding volume. It's also helpful when the bounding volume is tricked by some special properties, like billboards, that may move geometry out of its bounding volume otherwise.

Definition at line 256 of file boundedObject.I.

void CollisionSolid::set_tangible (  bool  tangible  )  [inline]
 

Sets the current state of the 'tangible' flag.

Set this true to make the solid tangible, so that a CollisionHandlerPusher will not allow another object to intersect it, or false to make it intangible, so that a CollisionHandlerPusher will ignore it except to throw an event.

Definition at line 42 of file collisionSolid.I.

References _tangible, and INLINE.

Referenced by EggLoader::make_collision_sphere().

PointerTo< CollisionEntry > CollisionSolid::test_intersection (  const CollisionEntry &  entry  )  const [virtual]
 

Tests for a collision between this object (which is also the "from" object in the entry) and the "into" object.

If a collision is detected, returns a new CollisionEntry object that records the collision; otherwise, returns NULL.

Reimplemented in CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 98 of file collisionSolid.cxx.

References _viz_geom, and NULL.

Referenced by CollisionEntry::set_from_surface_normal().

PointerTo< CollisionEntry > CollisionSolid::test_intersection_from_ray (  const CollisionEntry &  entry  )  const [protected, virtual]
 

This is part of the double-dispatch implementation of test_intersection().

It is called when the "from" object is a ray.

Reimplemented in CollisionPlane, CollisionPolygon, and CollisionSphere.

Definition at line 187 of file collisionSolid.cxx.

Referenced by CollisionRay::make_copy().

PointerTo< CollisionEntry > CollisionSolid::test_intersection_from_segment (  const CollisionEntry &  entry  )  const [protected, virtual]
 

This is part of the double-dispatch implementation of test_intersection().

It is called when the "from" object is a segment.

Reimplemented in CollisionPolygon, and CollisionSphere.

Definition at line 206 of file collisionSolid.cxx.

Referenced by CollisionSegment::make_copy().

PointerTo< CollisionEntry > CollisionSolid::test_intersection_from_sphere (  const CollisionEntry &  entry  )  const [protected, virtual]
 

This is part of the double-dispatch implementation of test_intersection().

It is called when the "from" object is a sphere.

Reimplemented in CollisionPlane, CollisionPolygon, and CollisionSphere.

Definition at line 168 of file collisionSolid.cxx.

References NULL.

Referenced by CollisionSphere::make_copy().

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().

void CollisionSolid::write (  ostream &  out,
int  indent_level = 0
)  const [virtual]
 

Definition at line 151 of file collisionSolid.cxx.

References CollisionRay::get_class_type(), get_type(), NULL, and report_undefined_intersection_test().

void CollisionSolid::write_datagram (  BamWriter *  manager,
Datagram &  me
)  [virtual]
 

Function to write the important information in the particular object to a Datagram.

Implements TypedWritableReferenceCount.

Reimplemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 304 of file collisionSolid.cxx.

Referenced by CollisionSegment::fill_viz_geom().

virtual void CollisionSolid::xform (  const LMatrix4f &  mat  )  [pure virtual]
 

Implemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Friends And Related Function Documentation

friend class CollisionRay [friend]
 

Definition at line 140 of file collisionSolid.h.

friend class CollisionSegment [friend]
 

Definition at line 141 of file collisionSolid.h.

friend class CollisionSphere [friend]
 

Definition at line 139 of file collisionSolid.h.

Member Data Documentation

bool CollisionSolid::_tangible [protected]
 

Definition at line 112 of file collisionSolid.h.

Referenced by report_undefined_intersection_test(), and set_tangible().

TypeHandle CollisionSolid::_type_handle [static, private]
 

Reimplemented from BoundedObject.

Reimplemented in CollisionPlane, CollisionPolygon, CollisionRay, CollisionSegment, and CollisionSphere.

Definition at line 40 of file collisionSolid.cxx.

PointerTo< GeomNode > CollisionSolid::_viz_geom [protected]
 

Definition at line 110 of file collisionSolid.h.

Referenced by CollisionSegment::recompute_bound(), test_intersection(), and CollisionPolygon::test_intersection_from_segment().

bool CollisionSolid::_viz_geom_stale [protected]
 

Definition at line 111 of file collisionSolid.h.

Referenced by CollisionSolid().

TypedWritable *const TypedWritable::Null = (TypedWritable*)0L [static, inherited]
 

Definition at line 25 of file typedWritable.cxx.

Referenced by Child::complete_pointers(), Parent::complete_pointers(), Person::complete_pointers(), LoaderFileTypeBam::get_extension(), PartGroup::pick_channel_index(), BamReader::read_pointer(), and AnimGroup::write_datagram().

The documentation for this class was generated from the following files:
Generated on Fri May 2 00:48:37 2003 for Panda by doxygen1.3