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VertexTransform Class Referenceabstract

This is an abstract base class that holds a pointer to some transform, computed in some arbitrary way, that is to be applied to vertices during rendering. More...

#include "vertexTransform.h"

Inheritance diagram for VertexTransform:
TypedWritableReferenceCount TypedWritable ReferenceCount TypedObject MemoryBase MemoryBase JointVertexTransform NodeVertexTransform UserVertexTransform

Public Member Functions

virtual void accumulate_matrix (LMatrix4 &accum, PN_stdfloat weight) const
 Adds the value of this transform's matrix, modified by the indicated weight, into the indicated accumulation matrix. More...
 
virtual TypeHandle force_init_type ()
 
virtual void get_matrix (LMatrix4 &matrix) const =0
 
UpdateSeq get_modified (Thread *current_thread=Thread::get_current_thread()) const
 
virtual TypeHandle get_type () const
 
virtual void mult_matrix (LMatrix4 &result, const LMatrix4 &previous) const
 Premultiplies this transform's matrix with the indicated previous matrix, so that the result is the net composition of the given transform with this transform. More...
 
virtual void output (std::ostream &out) const
 
virtual void write (std::ostream &out, int indent_level) const
 
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...
 
- 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 TypeHandle get_class_type ()
 
static UpdateSeq get_global_modified (Thread *current_thread)
 Returns the currently highest VertexTransform::get_modified() value in the world. More...
 
static UpdateSeq get_next_modified (Thread *current_thread)
 Returns a monotonically increasing sequence. More...
 
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_modified
 Returns a sequence number that's guaranteed to change at least every time the value reported by get_matrix() changes. 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...
 

Friends

class TransformTable
 

Additional Inherited Members

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

Detailed Description

This is an abstract base class that holds a pointer to some transform, computed in some arbitrary way, that is to be applied to vertices during rendering.

This is used to implement soft-skinned and animated vertices. Derived classes will define how the transform is actually computed.

Definition at line 35 of file vertexTransform.h.

Member Function Documentation

◆ accumulate_matrix()

void VertexTransform::accumulate_matrix ( LMatrix4 &  accum,
PN_stdfloat  weight 
) const
virtual

Adds the value of this transform's matrix, modified by the indicated weight, into the indicated accumulation matrix.

This is used to compute the result of several blended transforms.

Reimplemented in JointVertexTransform.

Definition at line 61 of file vertexTransform.cxx.

◆ get_global_modified()

UpdateSeq VertexTransform::get_global_modified ( Thread current_thread)
inlinestatic

Returns the currently highest VertexTransform::get_modified() value in the world.

This can be used as a quick way to determine if any VertexTransforms have changed value recently.

Definition at line 30 of file vertexTransform.I.

Referenced by TransformBlend::update_blend().

◆ get_next_modified()

UpdateSeq VertexTransform::get_next_modified ( Thread current_thread)
static

Returns a monotonically increasing sequence.

Each time this is called, a new sequence number is returned, higher than the previous value.

This is used to ensure that all VertexTransform::get_modified() calls return an increasing number in the same space, so that TransformBlend::get_modified() is easy to determine. It is similar to Geom::get_modified(), but it is in a different space.

Definition at line 97 of file vertexTransform.cxx.

◆ mult_matrix()

void VertexTransform::mult_matrix ( LMatrix4 &  result,
const LMatrix4 &  previous 
) const
virtual

Premultiplies this transform's matrix with the indicated previous matrix, so that the result is the net composition of the given transform with this transform.

The result is stored in the parameter "result", which should not be the same matrix as previous.

Reimplemented in JointVertexTransform.

Definition at line 48 of file vertexTransform.cxx.

◆ write_datagram()

void VertexTransform::write_datagram ( BamWriter manager,
Datagram dg 
)
virtual

Writes the contents of this object to the datagram for shipping out to a Bam file.

Reimplemented from TypedWritable.

Reimplemented in UserVertexTransform, and JointVertexTransform.

Definition at line 126 of file vertexTransform.cxx.

References TypedWritable::write_datagram().

Referenced by JointVertexTransform::write_datagram(), and UserVertexTransform::write_datagram().

Member Data Documentation

◆ get_modified

UpdateSeq VertexTransform::get_modified
inline

Returns a sequence number that's guaranteed to change at least every time the value reported by get_matrix() changes.

Definition at line 45 of file vertexTransform.h.


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