A finite line segment, with two specific endpoints but no thickness. More...
#include "collisionSegment.h"
Inheritance diagram for CollisionSegment:
Public Member Functions | |
| CollisionSegment () | |
| Creates an invalid segment. More... | |
| CollisionSegment (const LPoint3 &a, const LPoint3 &db) | |
| CollisionSegment (PN_stdfloat ax, PN_stdfloat ay, PN_stdfloat az, PN_stdfloat bx, PN_stdfloat by, PN_stdfloat bz) | |
| CollisionSegment (const CollisionSegment ©) | |
| 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... | |
| const LPoint3 & | get_point_a () const |
| const LPoint3 & | get_point_b () const |
| virtual TypeHandle | get_type () const |
| virtual CollisionSolid * | make_copy () |
| virtual void | output (std::ostream &out) const |
| virtual | PT (CollisionEntry) test_intersection(const CollisionEntry &entry) const |
| bool | set_from_lens (LensNode *camera, const LPoint2 &point) |
| Accepts a LensNode and a 2-d point in the range [-1,1]. More... | |
| bool | set_from_lens (LensNode *camera, PN_stdfloat px, PN_stdfloat py) |
| Accepts a LensNode and a 2-d point in the range [-1,1]. More... | |
| void | set_point_a (const LPoint3 &a) |
| void | set_point_a (PN_stdfloat x, PN_stdfloat y, PN_stdfloat z) |
| void | set_point_b (const LPoint3 &b) |
| void | set_point_b (PN_stdfloat x, PN_stdfloat y, PN_stdfloat z) |
| virtual void | write_datagram (BamWriter *manager, Datagram &dg) |
| Writes the contents of this object to the datagram for shipping out to a Bam file. More... | |
| virtual void | xform (const LMatrix4 &mat) |
 Public Member Functions inherited from CollisionSolid | |
| CollisionSolid (const CollisionSolid ©) | |
| 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 |
| virtual PStatCollector & | get_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 PStatCollector & | get_volume_pcollector () |
| bool | has_effective_normal () const |
| Returns true if a special normal was set by set_effective_normal(), false otherwise. More... | |
| bool | is_tangible () const |
| virtual | PT (PandaNode) get_viz(const CullTraverser *trav |
| 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) |
| virtual void | write (std::ostream &out, int indent_level=0) const |
| Public Member Functions inherited from CopyOnWriteObject | |
| CopyOnWriteObject (const CopyOnWriteObject ©) | |
| void | operator= (const CopyOnWriteObject ©) |
| 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 ©) | |
| virtual ReferenceCount * | as_reference_count () |
| Returns the pointer cast to a ReferenceCount pointer, if it is in fact of that type. More... | |
| void | operator= (const TypedWritableReferenceCount ©) |
| Public Member Functions inherited from TypedWritable | |
| TypedWritable (const TypedWritable ©) | |
| 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 ©) |
| 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 ©)=default | |
| TypedObject * | as_typed_object () |
| Returns the object, upcast (if necessary) to a TypedObject pointer. More... | |
| const TypedObject * | as_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... | |
| TypedObject & | operator= (const TypedObject ©)=default |
| Public Member Functions inherited from ReferenceCount | |
| int | get_ref_count () const |
| WeakReferenceList * | get_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... | |
| WeakReferenceList * | weak_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 void | register_with_read_factory () |
| Tells the BamReader how to create objects of type CollisionSegment. 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 | |
| get_point_a | |
| get_point_b | |
| set_point_a | |
| set_point_b | |
| Public Attributes inherited from CollisionSolid | |
| virtual const CullTraverserData bool bounds_only | const |
| virtual const CullTraverserData & | data |
| 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 BamReader * | reader = 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
A finite line segment, with two specific endpoints but no thickness.
It's similar to a CollisionRay, except it does not continue to infinity.
It does have an ordering, from point A to point B. If more than a single point of the segment is intersecting a solid, the reported intersection point is generally the closest on the segment to point A.
Definition at line 31 of file collisionSegment.h.
Constructor & Destructor Documentation
◆ CollisionSegment()
|
inline |
Creates an invalid segment.
This isn't terribly useful; it's expected that the user will subsequently adjust the segment via set_origin()/set_direction() or set_from_lens().
Definition at line 20 of file collisionSegment.I.
Member Function Documentation
◆ get_collision_origin()
|
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.
Implements CollisionSolid.
Definition at line 70 of file collisionSegment.cxx.
◆ register_with_read_factory()
|
static |
Tells the BamReader how to create objects of type CollisionSegment.
Definition at line 171 of file collisionSegment.cxx.
References BamReader::get_factory(), and Factory< Type >::register_factory().
Referenced by init_libcollide().
◆ set_from_lens() [1/2]
| bool CollisionSegment::set_from_lens | ( | LensNode * | camera, |
| const LPoint2 & | point | ||
| ) |
Accepts a LensNode and a 2-d point in the range [-1,1].
Sets the CollisionSegment so that it begins at the LensNode's near plane and extends to the far plane, making it suitable for picking objects from the screen given a camera and a mouse location.
Returns true if the point was acceptable, false otherwise.
Definition at line 91 of file collisionSegment.cxx.
References Lens::extrude(), and LensNode::get_lens().
Referenced by set_from_lens().
◆ set_from_lens() [2/2]
|
inline |
Accepts a LensNode and a 2-d point in the range [-1,1].
Sets the CollisionSegment so that it begins at the LensNode's near plane and extends to the far plane, making it suitable for picking objects from the screen given a camera and a mouse location.
Definition at line 121 of file collisionSegment.I.
References set_from_lens().
◆ write_datagram()
Writes the contents of this object to the datagram for shipping out to a Bam file.
Reimplemented from CollisionSolid.
Definition at line 180 of file collisionSegment.cxx.
References CollisionSolid::write_datagram().
The documentation for this class was generated from the following files:
- panda/src/collide/collisionSegment.h
- panda/src/collide/collisionSegment.cxx
- panda/src/collide/collisionSegment.I
