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CollisionPolygon Class Reference
Inheritance diagram for CollisionPolygon:
CollisionPlane CollisionSolid CopyOnWriteObject CachedTypedWritableReferenceCount TypedWritableReferenceCount TypedWritable ReferenceCount TypedObject MemoryBase MemoryBase CollisionGeom

Public Member Functions

 CollisionPolygon (const LVecBase3 &a, const LVecBase3 &b, const LVecBase3 &c)
 
 CollisionPolygon (const LVecBase3 &a, const LVecBase3 &b, const LVecBase3 &c, const LVecBase3 &d)
 
 CollisionPolygon (const LPoint3 *begin, const LPoint3 *end)
 
 CollisionPolygon (const CollisionPolygon &copy)
 
virtual TypeHandle force_init_type ()
 
virtual LPoint3 get_collision_origin () const
 Returns the point in space deemed to be the "origin" of the solid for collision purposes. More...
 
size_t get_num_points () const
 
LPoint3 get_point (size_t n) const
 
virtual PStatCollectorget_test_pcollector ()
 Returns a PStatCollector that is used to count the number of intersection tests made against a solid of this type in a given frame. More...
 
virtual TypeHandle get_type () const
 
virtual PStatCollectorget_volume_pcollector ()
 Returns a PStatCollector that is used to count the number of bounding volume tests made against a solid of this type in a given frame. More...
 
bool is_concave () const
 
bool is_valid () const
 
virtual CollisionSolidmake_copy ()
 
virtual void output (std::ostream &out) const
 
virtual PT (PandaNode) get_viz(const CullTraverser *trav
 
virtual void write (std::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. More...
 
virtual void xform (const LMatrix4 &mat)
 Transforms the solid by the indicated matrix. More...
 
- Public Member Functions inherited from CollisionPlane
 CollisionPlane (const LPlane &plane)
 
 CollisionPlane (const CollisionPlane &copy)
 
PN_stdfloat dist_to_plane (const LPoint3 &point) const
 
void flip ()
 Convenience method to flip the plane in-place. More...
 
LVector3 get_normal () const
 
const LPlane & get_plane () const
 
void set_plane (const LPlane &plane)
 
- Public Member Functions inherited from CollisionSolid
 CollisionSolid (const CollisionSolid &copy)
 
void clear_effective_normal ()
 Removes the normal previously set by set_effective_normal(). More...
 
 CPT (BoundingVolume) get_bounds() const
 
const LVector3 & get_effective_normal () const
 Returns the normal that was set by set_effective_normal(). More...
 
bool get_respect_effective_normal () const
 
bool has_effective_normal () const
 Returns true if a special normal was set by set_effective_normal(), false otherwise. More...
 
bool is_tangible () const
 
void set_bounds (const BoundingVolume &bounding_volume)
 
void set_effective_normal (const LVector3 &effective_normal)
 Records a false normal for this CollisionSolid that will be reported by the collision system with all collisions into it, instead of its actual normal. More...
 
void set_respect_effective_normal (bool respect_effective_normal)
 
void set_tangible (bool tangible)
 
- Public Member Functions inherited from CopyOnWriteObject
 CopyOnWriteObject (const CopyOnWriteObject &copy)
 
void operator= (const CopyOnWriteObject &copy)
 
- Public Member Functions inherited from CachedTypedWritableReferenceCount
void cache_ref () const
 Explicitly increments the cache reference count and the normal reference count simultaneously. More...
 
void cache_ref_only () const
 Decrements the cache reference count without affecting the normal reference count. More...
 
bool cache_unref () const
 Explicitly decrements the cache reference count and the normal reference count simultaneously. More...
 
int get_cache_ref_count () const
 
bool test_ref_count_integrity () const
 Does some easy checks to make sure that the reference count isn't completely bogus. More...
 
- Public Member Functions inherited from TypedWritableReferenceCount
 TypedWritableReferenceCount (const TypedWritableReferenceCount &copy)
 
virtual ReferenceCountas_reference_count ()
 Returns the pointer cast to a ReferenceCount pointer, if it is in fact of that type. More...
 
void operator= (const TypedWritableReferenceCount &copy)
 
- Public Member Functions inherited from TypedWritable
 TypedWritable (const TypedWritable &copy)
 
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(). More...
 
vector_uchar encode_to_bam_stream () const
 Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a bytes object. More...
 
bool encode_to_bam_stream (vector_uchar &data, BamWriter *writer=nullptr) const
 Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. More...
 
virtual void finalize (BamReader *manager)
 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. More...
 
UpdateSeq get_bam_modified () const
 Returns the current bam_modified counter. More...
 
void mark_bam_modified ()
 Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. More...
 
void operator= (const TypedWritable &copy)
 
virtual bool require_fully_complete () const
 Some objects require all of their nested pointers to have been completed before the objects themselves can be completed. More...
 
virtual void update_bam_nested (BamWriter *manager)
 Called by the BamWriter when this object has not itself been modified recently, but it should check its nested objects for updates. More...
 
- 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 void flush_level ()
 Flushes the PStatCollectors used during traversal. More...
 
static TypeHandle get_class_type ()
 
static void init_type ()
 
static TypedWritablemake_CollisionPolygon (const FactoryParams &params)
 Factory method to generate a CollisionPolygon object. More...
 
static void register_with_read_factory ()
 Factory method to generate a CollisionPolygon object. More...
 
static bool verify_points (const LPoint3 &a, const LPoint3 &b, const LPoint3 &c)
 Verifies that the indicated set of points will define a valid CollisionPolygon: that is, at least three non-collinear points, with no points repeated. More...
 
static bool verify_points (const LPoint3 &a, const LPoint3 &b, const LPoint3 &c, const LPoint3 &d)
 Verifies that the indicated set of points will define a valid CollisionPolygon: that is, at least three non-collinear points, with no points repeated. More...
 
static bool verify_points (const LPoint3 *begin, const LPoint3 *end)
 Verifies that the indicated set of points will define a valid CollisionPolygon: that is, at least three non-collinear points, with no points repeated. More...
 
- Static Public Member Functions inherited from CollisionPlane
static void flush_level ()
 Flushes the PStatCollectors used during traversal. More...
 
static TypeHandle get_class_type ()
 
static void init_type ()
 
static TypedWritablemake_CollisionPlane (const FactoryParams &params)
 Factory method to generate a CollisionPlane object. More...
 
static void register_with_read_factory ()
 Factory method to generate a CollisionPlane object. More...
 
- Static Public Member Functions inherited from CollisionSolid
static TypeHandle get_class_type ()
 
static void init_type ()
 
- Static Public Member Functions inherited from CopyOnWriteObject
static TypeHandle get_class_type ()
 
static void init_type ()
 
- Static Public Member Functions inherited from CachedTypedWritableReferenceCount
static TypeHandle get_class_type ()
 
static void init_type ()
 
- Static Public Member Functions inherited from TypedWritableReferenceCount
static TypeHandle get_class_type ()
 
static void init_type ()
 
static PT (TypedWritableReferenceCount) decode_from_bam_stream(vector_uchar data
 
- Static Public Member Functions inherited from TypedWritable
static bool decode_raw_from_bam_stream (TypedWritable *&ptr, ReferenceCount *&ref_ptr, vector_uchar data, BamReader *reader=nullptr)
 Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts the single object on those bytes. More...
 
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

virtual const CullTraverserData bool bounds_only const
 
virtual const CullTraverserDatadata
 
 get_num_points
 Returns the number of vertices of the CollisionPolygon. More...
 
 get_point
 Returns the nth vertex of the CollisionPolygon, expressed in 3-D space. More...
 
 is_concave
 Returns true if the CollisionPolygon appears to be concave, or false if it is safely convex. More...
 
 is_valid
 Returns true if the CollisionPolygon is valid (that is, it has at least three vertices), or false otherwise. More...
 
- Public Attributes inherited from CollisionPlane
 get_normal
 
 get_plane
 
 set_plane
 
- Public Attributes inherited from CollisionSolid
virtual const CullTraverserData bool bounds_only const
 
virtual const CullTraverserDatadata
 
 get_bounds
 
 get_collision_origin
 
 get_respect_effective_normal
 See set_respect_effective_normal(). More...
 
 is_tangible
 Returns whether the solid is considered 'tangible' or not. More...
 
 set_bounds
 
 set_respect_effective_normal
 This is only meaningful for CollisionSolids that will be added to a traverser as colliders. More...
 
 set_tangible
 Sets the current state of the 'tangible' flag. More...
 
- Public Attributes inherited from CachedTypedWritableReferenceCount
 get_cache_ref_count
 Returns the current reference count. More...
 
- Public Attributes inherited from TypedWritableReferenceCount
static BamReaderreader = nullptr)
 
- Public Attributes inherited from TypedObject
 get_type
 
- Public Attributes inherited from ReferenceCount
 get_ref_count
 Returns the current reference count. More...
 

Additional Inherited Members

- Static Public Attributes inherited from TypedWritable
static TypedWritable *const Null = nullptr
 

Detailed Description

Definition at line 29 of file collisionPolygon.h.

Member Function Documentation

◆ flush_level()

void CollisionPolygon::flush_level ( )
inlinestatic

Flushes the PStatCollectors used during traversal.

Definition at line 111 of file collisionPolygon.I.

◆ get_collision_origin()

LPoint3 CollisionPolygon::get_collision_origin ( ) const
virtual

Returns the point in space deemed to be the "origin" of the solid for collision purposes.

The closest intersection point to this origin point is considered to be the most significant.

Reimplemented from CollisionPlane.

Definition at line 219 of file collisionPolygon.cxx.

◆ get_test_pcollector()

PStatCollector & CollisionPolygon::get_test_pcollector ( )
virtual

Returns a PStatCollector that is used to count the number of intersection tests made against a solid of this type in a given frame.

Reimplemented from CollisionPlane.

Reimplemented in CollisionGeom.

Definition at line 294 of file collisionPolygon.cxx.

◆ get_volume_pcollector()

virtual PStatCollector& CollisionPolygon::get_volume_pcollector ( )
virtual

Returns a PStatCollector that is used to count the number of bounding volume tests made against a solid of this type in a given frame.

Reimplemented from CollisionPlane.

Reimplemented in CollisionGeom.

◆ make_CollisionPolygon()

TypedWritable * CollisionPolygon::make_CollisionPolygon ( const FactoryParams params)
static

Factory method to generate a CollisionPolygon object.

Definition at line 1562 of file collisionPolygon.cxx.

References parse_params().

Referenced by register_with_read_factory().

◆ register_with_read_factory()

void CollisionPolygon::register_with_read_factory ( )
static

Factory method to generate a CollisionPolygon object.

Definition at line 1576 of file collisionPolygon.cxx.

References BamReader::get_factory(), make_CollisionPolygon(), and Factory< Type >::register_factory().

Referenced by init_libcollide().

◆ verify_points() [1/3]

bool CollisionPolygon::verify_points ( const LPoint3 &  a,
const LPoint3 &  b,
const LPoint3 &  c 
)
inlinestatic

Verifies that the indicated set of points will define a valid CollisionPolygon: that is, at least three non-collinear points, with no points repeated.

Definition at line 82 of file collisionPolygon.I.

Referenced by verify_points().

◆ verify_points() [2/3]

bool CollisionPolygon::verify_points ( const LPoint3 &  a,
const LPoint3 &  b,
const LPoint3 &  c,
const LPoint3 &  d 
)
inlinestatic

Verifies that the indicated set of points will define a valid CollisionPolygon: that is, at least three non-collinear points, with no points repeated.

Definition at line 97 of file collisionPolygon.I.

References verify_points().

◆ verify_points() [3/3]

bool CollisionPolygon::verify_points ( const LPoint3 *  begin,
const LPoint3 *  end 
)
static

Verifies that the indicated set of points will define a valid CollisionPolygon: that is, at least three non-collinear points, with no points repeated.

This does not check that the polygon defined is convex; that check is made later, once we have projected the points to 2-d space where the decision is easier.

Definition at line 80 of file collisionPolygon.cxx.

◆ write_datagram()

void CollisionPolygon::write_datagram ( BamWriter manager,
Datagram me 
)
virtual

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

Reimplemented from CollisionPlane.

Definition at line 1506 of file collisionPolygon.cxx.

References Datagram::add_uint16(), and CollisionPlane::write_datagram().

◆ xform()

void CollisionPolygon::xform ( const LMatrix4 &  mat)
virtual

Transforms the solid by the indicated matrix.

Reimplemented from CollisionPlane.

Definition at line 179 of file collisionPolygon.cxx.

Member Data Documentation

◆ get_num_points

size_t CollisionPolygon::get_num_points
inline

Returns the number of vertices of the CollisionPolygon.

Definition at line 50 of file collisionPolygon.h.

◆ get_point

LPoint3 CollisionPolygon::get_point
inline

Returns the nth vertex of the CollisionPolygon, expressed in 3-D space.

Definition at line 50 of file collisionPolygon.h.

◆ is_concave

bool CollisionPolygon::is_concave

Returns true if the CollisionPolygon appears to be concave, or false if it is safely convex.

Definition at line 65 of file collisionPolygon.h.

◆ is_valid

bool CollisionPolygon::is_valid

Returns true if the CollisionPolygon is valid (that is, it has at least three vertices), or false otherwise.

Definition at line 64 of file collisionPolygon.h.


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