Panda3D
Public Member Functions | Static Public Member Functions

TransformBlendTable Class Reference

This structure collects together the different combinations of transforms and blend amounts used by a GeomVertexData, to facilitate computing dynamic vertices on the CPU at runtime. More...

Inheritance diagram for TransformBlendTable:
CopyOnWriteObject CachedTypedWritableReferenceCount TypedWritableReferenceCount TypedWritable ReferenceCount TypedObject MemoryBase MemoryBase

List of all members.

Public Member Functions

 TransformBlendTable ()
 TransformBlendTable (TransformBlendTable const copy)
int addBlend (TransformBlend const blend)
 Adds a new blend to the table, and returns its index number.
 cacheRef ()
 See CachedTypedWritableReferenceCount.cache_ref().
bool cacheUnref ()
 Explicitly decrements the cache reference count and the normal reference count simultaneously.
string encodeToBamStream ()
 Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a string string.
bool encodeToBamStream (basic_stringchar data, BamWriter writer)
 Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string.
bool encodeToBamStream (basic_stringchar data)
 Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string.
UpdateSeq getBamModified ()
 Returns the current bam_modified counter.
TransformBlend const getBlend (int n)
 Returns the nth blend in the table.
list getBlends ()
int getCacheRefCount ()
 Returns the current reference count.
int getMaxSimultaneousTransforms ()
 Returns the maximum number of unique VertexTransform objects that are applied to any one vertex simultaneously.
UpdateSeq getModified (Thread current_thread)
 Returns a counter which is guaranteed to increment at least when any TransformBlends within the table have changed.
int getNumBlends ()
 Returns the total number of different blend combinations in the table.
int getNumTransforms ()
 Returns the number of unique VertexTransform objects represented in the table.
int getRefCount ()
 Returns the current reference count.
SparseArray const getRows ()
 Returns the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.
TypeHandle getType ()
int getTypeIndex ()
 Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.
bool isExactType (TypeHandle handle)
 Returns true if the current object is the indicated type exactly.
bool isOfType (TypeHandle handle)
 Returns true if the current object is or derives from the indicated type.
 markBamModified ()
 Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams.
SparseArray modifyRows ()
 Returns a modifiable reference to the SparseArray that specifies the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.
TransformBlendTable operator= (TransformBlendTable const copy)
PyObject reduce (PyObject self)
 This special Python method is implement to provide support for the pickle module.
PyObject reducePersist (PyObject self, PyObject pickler)
 This special Python method is implement to provide support for the pickle module.
 ref ()
 Explicitly increments the reference count.
 removeBlend (int n)
 Removes the blend at the nth position.
 setBlend (int n, TransformBlend const blend)
 Replaces the blend at the nth position with the indicated value.
 setRows (SparseArray const rows)
 Specifies the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus.
bool testRefCountNonzero ()
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus.
bool unref ()
 Explicitly decrements the reference count.
 write (ostream out, int indent_level)

Static Public Member Functions

static TypedWritableReferenceCount decodeFromBamStream (string data, BamReader reader)
 Reads the string created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on that string.
static TypedWritableReferenceCount decodeFromBamStream (string data)
 Reads the string created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on that string.
static TypeHandle getClassType ()

Detailed Description

This structure collects together the different combinations of transforms and blend amounts used by a GeomVertexData, to facilitate computing dynamic vertices on the CPU at runtime.

Each vertex has a pointer to exactly one of the entries in this table, and each entry defines a number of transform/blend combinations.

This structure is used for a GeomVertexData set up to compute its dynamic vertices on the CPU. See TransformTable for one set up to compute its dynamic vertices on the graphics card.


Constructor & Destructor Documentation


Member Function Documentation

int addBlend ( TransformBlend const  blend)

Adds a new blend to the table, and returns its index number.

If there is already an identical blend in the table, simply returns that number instead.

cacheRef ( ) [inherited]

See CachedTypedWritableReferenceCount.cache_ref().

Reimplemented from CachedTypedWritableReferenceCount.

bool cacheUnref ( ) [inherited]

Explicitly decrements the cache reference count and the normal reference count simultaneously.

The return value is true if the new reference count is nonzero, false if it is zero.

Reimplemented in TransformState, and RenderState.

static TypedWritableReferenceCount decodeFromBamStream ( string  data,
BamReader  reader 
) [static, inherited]

Reads the string created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on that string.

Returns NULL on error.

This method is intended to replace decode_raw_from_bam_stream() when you know the stream in question returns an object of type TypedWritableReferenceCount, allowing for easier reference count management. Note that the caller is still responsible for maintaining the reference count on the return value.

static TypedWritableReferenceCount decodeFromBamStream ( string  data) [static, inherited]

Reads the string created by a previous call to encode_to_bam_stream(), and extracts and returns the single object on that string.

Returns NULL on error.

This method is intended to replace decode_raw_from_bam_stream() when you know the stream in question returns an object of type TypedWritableReferenceCount, allowing for easier reference count management. Note that the caller is still responsible for maintaining the reference count on the return value.

string encodeToBamStream ( ) [inherited]

Converts the TypedWritable object into a single stream of data using a BamWriter, and returns that data as a string string.

Returns empty string on failure.

This is a convenience method particularly useful for cases when you are only serializing a single object. If you have many objects to process, it is more efficient to use the same BamWriter to serialize all of them together.

bool encodeToBamStream ( basic_stringchar  data,
BamWriter  writer 
) [inherited]

Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string.

Returns true on success, false on failure.

This is a convenience method particularly useful for cases when you are only serializing a single object. If you have many objects to process, it is more efficient to use the same BamWriter to serialize all of them together.

bool encodeToBamStream ( basic_stringchar  data) [inherited]

Converts the TypedWritable object into a single stream of data using a BamWriter, and stores that data in the indicated string.

Returns true on success, false on failure.

This is a convenience method particularly useful for cases when you are only serializing a single object. If you have many objects to process, it is more efficient to use the same BamWriter to serialize all of them together.

UpdateSeq getBamModified ( ) [inherited]

Returns the current bam_modified counter.

This counter is normally incremented automatically whenever the object is modified.

TransformBlend const getBlend ( int  n)

Returns the nth blend in the table.

list getBlends ( )
int getCacheRefCount ( ) [inherited]

Returns the current reference count.

static TypeHandle getClassType ( ) [static]

Reimplemented from CopyOnWriteObject.

int getMaxSimultaneousTransforms ( )

Returns the maximum number of unique VertexTransform objects that are applied to any one vertex simultaneously.

This is the same limit reflected by GraphicsStateGuardian.get_max_vertex_transforms().

UpdateSeq getModified ( Thread  current_thread)

Returns a counter which is guaranteed to increment at least when any TransformBlends within the table have changed.

int getNumBlends ( )

Returns the total number of different blend combinations in the table.

int getNumTransforms ( )

Returns the number of unique VertexTransform objects represented in the table.

This will correspond to the size of the TransformTable object that would represent the same table. This is also the same limit reflected by GraphicsStateGuardian.get_max_vertex_transform_indices().

int getRefCount ( ) [inherited]

Returns the current reference count.

SparseArray const getRows ( )

Returns the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.

TypeHandle getType ( ) [inherited]

Reimplemented in AnimChannelBase.

int getTypeIndex ( ) [inherited]

Returns the internal index number associated with this object's TypeHandle, a unique number for each different type.

This is equivalent to get_type().get_index().

bool isExactType ( TypeHandle  handle) [inherited]

Returns true if the current object is the indicated type exactly.

bool isOfType ( TypeHandle  handle) [inherited]

Returns true if the current object is or derives from the indicated type.

markBamModified ( ) [inherited]

Increments the bam_modified counter, so that this object will be invalidated and retransmitted on any open bam streams.

This should normally not need to be called by user code; it should be called internally when the object has been changed in a way that legitimately requires its retransmission to any connected clients.

SparseArray modifyRows ( )

Returns a modifiable reference to the SparseArray that specifies the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.

TransformBlendTable operator= ( TransformBlendTable const  copy)
PyObject reduce ( PyObject  self) [inherited]

This special Python method is implement to provide support for the pickle module.

This hooks into the native pickle and cPickle modules, but it cannot properly handle self-referential BAM objects.

PyObject reducePersist ( PyObject  self,
PyObject  pickler 
) [inherited]

This special Python method is implement to provide support for the pickle module.

This is similar to __reduce__, but it provides additional support for the missing persistent-state object needed to properly support self-referential BAM objects written to the pickle stream. This hooks into the pickle and cPickle modules implemented in direct/src/stdpy.

ref ( ) [inherited]

Explicitly increments the reference count.

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

removeBlend ( int  n)

Removes the blend at the nth position.

setBlend ( int  n,
TransformBlend const  blend 
)

Replaces the blend at the nth position with the indicated value.

setRows ( SparseArray const  rows)

Specifies the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects.

bool testRefCountIntegrity ( ) [inherited]

Does some easy checks to make sure that the reference count isn't completely bogus.

Reimplemented from ReferenceCount.

Reimplemented in NodeCachedReferenceCount.

bool testRefCountNonzero ( ) [inherited]

Does some easy checks to make sure that the reference count isn't zero, or completely bogus.

Returns true if ok, false otherwise.

bool unref ( ) [inherited]

Explicitly decrements the reference count.

Note that the object will not be implicitly deleted by unref() simply because the reference count drops to zero. (Having a member function delete itself is problematic.) However, see the helper function unref_delete().

User code should avoid using ref() and unref() directly, which can result in missed reference counts. Instead, let a PointerTo object manage the reference counting automatically.

This function is const, even though it changes the object, because generally fiddling with an object's reference count isn't considered part of fiddling with the object. An object might be const in other ways, but we still need to accurately count the number of references to it.

The return value is true if the new reference count is nonzero, false if it is zero.

Reimplemented in GeomVertexArrayFormat, and GeomVertexFormat.

write ( ostream  out,
int  indent_level 
)
 All Classes Namespaces Functions Variables Enumerations Enumerator Properties