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. More...

Inheritance diagram for TransformBlendTable:
CopyOnWriteObject CachedTypedWritableReferenceCount TypedWritableReferenceCount TypedWritable ReferenceCount TypedObject

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. 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. 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. 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 ()
 
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 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

const TransformBlend blends []
 
int max_simultaneous_transforms
 Returns the maximum number of unique VertexTransform objects that are applied to any one vertex simultaneously. More...
 
UpdateSeq modified
 Returns a counter which is guaranteed to increment at least when any TransformBlends within the table have changed. More...
 
int num_transforms
 Returns the number of unique VertexTransform objects represented in the table. More...
 
const SparseArray rows
 Returns the subset of rows (vertices) in the associated GeomVertexData that this TransformBlendTable actually affects. 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...
 

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 
)

Member Data Documentation

◆ blends

const TransformBlend blends[]

◆ max_simultaneous_transforms

int max_simultaneous_transforms

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().

◆ modified

UpdateSeq modified

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

◆ num_transforms

int num_transforms

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().

◆ rows

const SparseArray rows

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