Panda3D
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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. Each vertex has a pointer to exactly one of the entries in this table, and each entry defines a number of transform/blend combinations. More...

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

Public Member Functions

 __init__ ()
 
 __init__ (const TransformBlendTable copy)
 
int addBlend (const TransformBlend 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. More...
 
const TransformBlend getBlend (int n)
 Returns the nth blend in the table. More...
 
list getBlends ()
 
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(). More...
 
UpdateSeq getModified (Thread current_thread)
 Returns a counter which is guaranteed to increment at least when any TransformBlends within the table have changed. More...
 
int getNumBlends ()
 Returns the total number of different blend combinations in the table. More...
 
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(). More...
 
const SparseArray getRows ()
 Returns the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects. More...
 
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. More...
 
TransformBlendTable operator= (const TransformBlendTable copy)
 
 removeBlend (int n)
 Removes the blend at the nth position. More...
 
 setBlend (int n, const TransformBlend blend)
 Replaces the blend at the nth position with the indicated value. More...
 
 setRows (const SparseArray rows)
 Specifies the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects. More...
 
 write (Ostream out, int indent_level)
 
- Public Member Functions inherited from CopyOnWriteObject
 cacheRef ()
 See CachedTypedWritableReferenceCount::cache_ref(). More...
 
bool cacheUnref ()
 See CachedTypedWritableReferenceCount::cache_unref(). More...
 
- 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)
 
str encodeToBamStream ()
 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. More...
 
bool encodeToBamStream (String data, BamWriter writer)
 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. More...
 
UpdateSeq getBamModified ()
 Returns the current bam_modified counter. This counter is normally incremented automatically whenever the object is modified. More...
 
 markBamModified ()
 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. More...
 
- Public Member Functions inherited from TypedObject
TypeHandle getType ()
 Derived classes should override this function to return get_class_type(). More...
 
int getTypeIndex ()
 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(). 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. 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. More...
 
bool testRefCountIntegrity ()
 Does some easy checks to make sure that the reference count isn't completely bogus. Returns true if ok, false otherwise. More...
 
bool testRefCountNonzero ()
 Does some easy checks to make sure that the reference count isn't zero, or completely bogus. Returns true if ok, false otherwise. More...
 
bool unref ()
 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(). More...
 

Static Public Member Functions

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 (str 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. Returns NULL on error. 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 ()
 

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.

Member Function Documentation

◆ __init__() [1/2]

__init__ ( )

◆ __init__() [2/2]

__init__ ( const TransformBlendTable  copy)

◆ addBlend()

int addBlend ( const TransformBlend  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.

◆ getBlend()

const TransformBlend getBlend ( int  n)

Returns the nth blend in the table.

◆ getBlends()

list getBlends ( )

◆ getClassType()

static TypeHandle getClassType ( )
static

◆ getMaxSimultaneousTransforms()

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().

◆ getModified()

UpdateSeq getModified ( Thread  current_thread)

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

◆ getNumBlends()

int getNumBlends ( )

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

◆ getNumTransforms()

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().

◆ getRows()

const SparseArray getRows ( )

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

◆ modifyRows()

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.

◆ operator=()

TransformBlendTable operator= ( const TransformBlendTable  copy)

◆ removeBlend()

removeBlend ( int  n)

Removes the blend at the nth position.

◆ setBlend()

setBlend ( int  n,
const TransformBlend  blend 
)

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

◆ setRows()

setRows ( const SparseArray  rows)

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

◆ write()

write ( Ostream  out,
int  indent_level 
)