Panda3D
Public Member Functions | Static Public Member Functions | Public Attributes | List of all members
CollisionPolygon Class Reference
Inheritance diagram for CollisionPolygon:
CollisionPlane CollisionSolid CopyOnWriteObject CachedTypedWritableReferenceCount TypedWritableReferenceCount TypedWritable ReferenceCount TypedObject

Public Member Functions

 __init__ (const LPoint3 begin, const LPoint3 end)
 
 __init__ (const LVecBase3 a, const LVecBase3 b, const LVecBase3 c)
 
 __init__ (const LVecBase3 a, const LVecBase3 b, const LVecBase3 c, const LVecBase3 d)
 
int getNumPoints ()
 Returns the number of vertices of the CollisionPolygon. More...
 
LPoint3 getPoint (int n)
 Returns the nth vertex of the CollisionPolygon, expressed in 3-D space. More...
 
list getPoints ()
 
bool isConcave ()
 Returns true if the CollisionPolygon appears to be concave, or false if it is safely convex. More...
 
bool isValid ()
 Returns true if the CollisionPolygon is valid (that is, it has at least three vertices), or false otherwise. More...
 
- Public Member Functions inherited from CollisionPlane
 __init__ (const CollisionPlane copy)
 
 __init__ (const LPlane plane)
 
float distToPlane (const LPoint3 point)
 
 flip ()
 Convenience method to flip the plane in-place. More...
 
LVector3 getNormal ()
 
const LPlane getPlane ()
 
 setPlane (const LPlane plane)
 
- Public Member Functions inherited from CollisionSolid
 clearEffectiveNormal ()
 Removes the normal previously set by set_effective_normal(). More...
 
const BoundingVolume getBounds ()
 Returns the solid's bounding volume. More...
 
LPoint3 getCollisionOrigin ()
 
const LVector3 getEffectiveNormal ()
 Returns the normal that was set by set_effective_normal(). More...
 
bool getRespectEffectiveNormal ()
 See set_respect_effective_normal(). More...
 
bool hasEffectiveNormal ()
 Returns true if a special normal was set by set_effective_normal(), false otherwise. More...
 
bool isTangible ()
 Returns whether the solid is considered 'tangible' or not. More...
 
 output (Ostream out)
 
 setBounds (const BoundingVolume bounding_volume)
 Returns the solid's bounding volume. More...
 
 setEffectiveNormal (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...
 
 setRespectEffectiveNormal (bool respect_effective_normal)
 This is only meaningful for CollisionSolids that will be added to a traverser as colliders. More...
 
 setTangible (bool tangible)
 Sets the current state of the 'tangible' flag. More...
 
 write (Ostream out, int indent_level)
 
- Public Member Functions inherited from CopyOnWriteObject
 cacheRef ()
 
bool cacheUnref ()
 
- Public Member Functions inherited from CachedTypedWritableReferenceCount
 cacheRef ()
 Explicitly increments the cache reference count and the normal reference count simultaneously. More...
 
bool cacheUnref ()
 Explicitly decrements the cache reference count and the normal reference count simultaneously. More...
 
int getCacheRefCount ()
 Returns the current reference count. More...
 
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus. More...
 
- Public Member Functions inherited from TypedWritable
object __reduce__ ()
 
object __reduce_persist__ (object pickler)
 
VectorUchar encodeToBamStream ()
 Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a bytes object. More...
 
bool encodeToBamStream (VectorUchar data, BamWriter writer)
 Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string. More...
 
 fillin (DatagramIterator scan, BamReader manager)
 This internal function is intended to be called by each class's make_from_bam() method to read in all of the relevant data from the BamFile for the new object. More...
 
UpdateSeq getBamModified ()
 Returns the current bam_modified counter. More...
 
 markBamModified ()
 Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams. More...
 
- Public Member Functions inherited from TypedObject
TypeHandle getType ()
 
int getTypeIndex ()
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type. More...
 
bool isExactType (TypeHandle handle)
 Returns true if the current object is the indicated type exactly. More...
 
bool isOfType (TypeHandle handle)
 Returns true if the current object is or derives from the indicated type. More...
 
- Public Member Functions inherited from ReferenceCount
int getRefCount ()
 Returns the current reference count. More...
 
 ref ()
 Explicitly increments the reference count. More...
 
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus. More...
 
bool testRefCountNonzero ()
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus. More...
 
bool unref ()
 Explicitly decrements the reference count. More...
 

Static Public Member Functions

static TypeHandle getClassType ()
 
static bool verifyPoints (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 bool verifyPoints (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 verifyPoints (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 Public Member Functions inherited from CollisionPlane
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from CollisionSolid
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from CopyOnWriteObject
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from CachedTypedWritableReferenceCount
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from TypedWritableReferenceCount
static TypedWritableReferenceCount decodeFromBamStream (VectorUchar data, BamReader reader)
 Reads the bytes created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on those bytes. More...
 
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from TypedWritable
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from TypedObject
static TypeHandle getClassType ()
 
- Static Public Member Functions inherited from ReferenceCount
static TypeHandle getClassType ()
 

Public Attributes

bool concave
 Returns true if the CollisionPolygon appears to be concave, or false if it is safely convex. More...
 
LPoint3 points []
 
bool 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
LVector3 normal
 
const LPlane plane
 
- Public Attributes inherited from CollisionSolid
ConstPointerToBoundingVolume bounds
 Returns the solid's bounding volume. More...
 
LPoint3 collision_origin
 
bool respect_effective_normal
 See set_respect_effective_normal(). More...
 
bool tangible
 Returns whether the solid is considered 'tangible' or not. More...
 
- Public Attributes inherited from CachedTypedWritableReferenceCount
int cache_ref_count
 Returns the current reference count. More...
 
- Public Attributes inherited from TypedObject
TypeHandle type
 Returns the TypeHandle representing this object's type. More...
 
- Public Attributes inherited from ReferenceCount
int ref_count
 The current reference count. More...
 

Member Function Documentation

◆ __init__() [1/3]

__init__ ( const LPoint3  begin,
const LPoint3  end 
)

◆ __init__() [2/3]

__init__ ( const LVecBase3  a,
const LVecBase3  b,
const LVecBase3  c 
)

◆ __init__() [3/3]

__init__ ( const LVecBase3  a,
const LVecBase3  b,
const LVecBase3  c,
const LVecBase3  d 
)

◆ getClassType()

static TypeHandle getClassType ( )
static

◆ getNumPoints()

int getNumPoints ( )

Returns the number of vertices of the CollisionPolygon.

◆ getPoint()

LPoint3 getPoint ( int  n)

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

◆ getPoints()

list getPoints ( )

◆ isConcave()

bool isConcave ( )

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

◆ isValid()

bool isValid ( )

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

◆ verifyPoints() [1/3]

static bool verifyPoints ( 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.

◆ verifyPoints() [2/3]

static bool verifyPoints ( const LPoint3  a,
const LPoint3  b,
const LPoint3  c 
)
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.

◆ verifyPoints() [3/3]

static bool verifyPoints ( const LPoint3  a,
const LPoint3  b,
const LPoint3  c,
const LPoint3  d 
)
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.

Member Data Documentation

◆ concave

bool concave

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

◆ points

LPoint3 points[]

◆ valid

bool valid

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