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Public Member Functions | Static Public Member Functions

JointVertexTransform Class Reference

This is a specialization on VertexTransform that returns the transform necessary to move vertices as if they were assigned to the indicated joint. More...

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

List of all members.

Public Member Functions

 JointVertexTransform (CharacterJoint joint)
 Constructs a new object that converts vertices from the indicated joint's coordinate space, into the other indicated joint's space.
 accumulateMatrix (Mat4 accum, float weight)
 Adds the value of this transform's matrix, modified by the indicated weight, into the indicated accumulation matrix.
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.
CharacterJoint const getJoint ()
 Returns the joint for which this object returns the transform.
 getMatrix (Mat4 matrix)
UpdateSeq getModified (Thread current_thread)
 Returns a sequence number that's guaranteed to change at least every time the value reported by get_matrix() changes.
int getRefCount ()
 Returns the current reference count.
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.
 multMatrix (Mat4 result, Mat4 const previous)
 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.
 output (ostream out)
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.
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 ()
static UpdateSeq getGlobalModified (Thread current_thread)
 Returns the currently highest VertexTransform.get_modified() value in the world.
static UpdateSeq getNextModified (Thread current_thread)
 Returns a monotonically increasing sequence.

Detailed Description

This is a specialization on VertexTransform that returns the transform necessary to move vertices as if they were assigned to the indicated joint.

The geometry itself should be parented to the scene graph at the level of the character's root joint; that is, it should not be parented under a node directly animated by any joints.

Multiple combinations of these with different weights are used to implement soft-skinned vertices for an animated character.


Constructor & Destructor Documentation

Constructs a new object that converts vertices from the indicated joint's coordinate space, into the other indicated joint's space.


Member Function Documentation

accumulateMatrix ( Mat4  accum,
float  weight 
) [inherited]

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.

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.

static TypeHandle getClassType ( ) [static]

Reimplemented from VertexTransform.

static UpdateSeq getGlobalModified ( Thread  current_thread) [static, inherited]

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.

CharacterJoint const getJoint ( )

Returns the joint for which this object returns the transform.

getMatrix ( Mat4  matrix) [inherited]
UpdateSeq getModified ( Thread  current_thread) [inherited]

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

static UpdateSeq getNextModified ( Thread  current_thread) [static, inherited]

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.

int getRefCount ( ) [inherited]

Returns the current reference count.

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.

multMatrix ( Mat4  result,
Mat4 const  previous 
) [inherited]

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.

output ( ostream  out) [inherited]
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.

bool testRefCountIntegrity ( ) [inherited]

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

Returns true if ok, false otherwise.

Reimplemented in NodeReferenceCount, CachedTypedWritableReferenceCount, and 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 
) [inherited]
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