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:

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 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 &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

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 &copy)=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 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 BamReader *	reader = 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.