# TransformTable

from pandac.PandaModules import TransformTable

Class : TransformTable
Description : Stores the total set of VertexTransforms that the vertices in a particular GeomVertexData object might depend on.
This structure is used for a GeomVertexData set up to compute its dynamic vertices on the graphics card. See TransformBlendTable for one set up to compute its dynamic vertices on the CPU.

## Inheritance:

TransformTable: TypedWritableReferenceCount
TypedWritableReferenceCount: TypedWritable ReferenceCount
TypedWritable: TypedObject
TypedObject:
ReferenceCount:

## Methods of TransformTable:

addTransform
getClassType
getModified
getNumTransforms
getTransform
isRegistered
operator =
registerTable
removeTransform
setTransform
write

## Methods of TypedWritableReferenceCount:

getClassType

## Methods of TypedWritable:

getClassType

## Methods of TypedObject:

getClassType
getType
getTypeIndex
isExactType
isOfType

## Methods of ReferenceCount:

getClassType
getRefCount
ref
testRefCountIntegrity
testRefCountNonzero
unref

addTransform int TransformTable::add_transform(VertexTransform const *transform); Description: Adds a new transform to the table and returns the index number of the new transform. Only valid for unregistered tables. This does not automatically uniquify the pointer; if the transform is already present in the table, it will be added twice.

getClassType static TypeHandle TransformTable::get_class_type(void); Undocumented function.

getModified UpdateSeq TransformTable::get_modified(Thread *current_thread) const; Description: Returns a sequence number that's guaranteed to change at least when any VertexTransforms in the table change. (However, this is only true for a registered table. An unregistered table may or may not reflect an update here when a VertexTransform changes.)

getNumTransforms int TransformTable::get_num_transforms(void) const; Description: Returns the number of transforms in the table.

getTransform VertexTransform const *TransformTable::get_transform(int n) const; Description: Returns the nth transform in the table.

isRegistered bool TransformTable::is_registered(void) const; Filename: transformTable.I Created by: drose (23Mar05) PANDA 3D SOFTWARE Copyright (c) 2001 - 2004, Disney Enterprises, Inc. All rights reserved All use of this software is subject to the terms of the Panda 3d Software license. You should have received a copy of this license along with this source code; you will also find a current copy of the license at http://etc.cmu.edu/panda3d/docs/license/ . To contact the maintainers of this program write to panda3d-general@lists.sourceforge.net . Description: Returns true if this table has been registered. Once it has been registered, the set of transforms in a TransformTable may not be further modified; but it must be registered before it can be assigned to a Geom.

operator = void TransformTable::operator =(TransformTable const &copy); Description:

registerTable static ConstPointerTo< TransformTable > TransformTable::register_table(TransformTable const *table); Description: Registers a TransformTable for use. This is similar to GeomVertexFormat::register_format(). Once registered, a TransformTable may no longer be modified (although the individual VertexTransform objects may modify their reported transforms). This must be called before a table may be used in a Geom. After this call, you should discard the original pointer you passed in (which may or may not now be invalid) and let its reference count decrement normally; you should use only the returned value from this point on.

removeTransform void TransformTable::remove_transform(int n); Description: Removes the nth transform. Only valid for unregistered tables.

setTransform void TransformTable::set_transform(int n, VertexTransform const *transform); Description: Replaces the nth transform. Only valid for unregistered tables.

write void TransformTable::write(ostream &out) const; Description:

getClassType static TypeHandle TypedWritableReferenceCount::get_class_type(void); Undocumented function.

getClassType static TypeHandle TypedWritable::get_class_type(void); Undocumented function.

getClassType static TypeHandle TypedObject::get_class_type(void); Undocumented function.

getType virtual TypeHandle TypedObject::get_type(void) const = 0; Derived classes should override this function to return get_class_type().

getTypeIndex int TypedObject::get_type_index(void) const; Description: 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().

isExactType bool TypedObject::is_exact_type(TypeHandle handle) const; Description: Returns true if the current object is the indicated type exactly.

isOfType bool TypedObject::is_of_type(TypeHandle handle) const; Description: Returns true if the current object is or derives from the indicated type.

getClassType static TypeHandle ReferenceCount::get_class_type(void); Undocumented function.

getRefCount int ReferenceCount::get_ref_count(void) const; Description: Returns the current reference count.

ref void ReferenceCount::ref(void) const; Description: 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.

testRefCountIntegrity bool ReferenceCount::test_ref_count_integrity(void) const; Description: Does some easy checks to make sure that the reference count isn't completely bogus. Returns true if ok, false otherwise.

testRefCountNonzero bool ReferenceCount::test_ref_count_nonzero(void) const; Description: Does some easy checks to make sure that the reference count isn't zero, or completely bogus. Returns true if ok, false otherwise.

unref bool ReferenceCount::unref(void) const; Description: 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; plus, we don't have a virtual destructor anyway.) 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.