Panda3D
jointVertexTransform.h
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1 /**
2  * PANDA 3D SOFTWARE
3  * Copyright (c) Carnegie Mellon University. All rights reserved.
4  *
5  * All use of this software is subject to the terms of the revised BSD
6  * license. You should have received a copy of this license along
7  * with this source code in a file named "LICENSE."
8  *
9  * @file jointVertexTransform.h
10  * @author drose
11  * @date 2005-03-24
12  */
13 
14 #ifndef JOINTVERTEXTRANSFORM_H
15 #define JOINTVERTEXTRANSFORM_H
16 
17 #include "pandabase.h"
18 #include "characterJoint.h"
19 #include "vertexTransform.h"
20 #include "pointerTo.h"
21 #include "lightMutex.h"
22 
23 /**
24  * This is a specialization on VertexTransform that returns the transform
25  * necessary to move vertices as if they were assigned to the indicated joint.
26  * The geometry itself should be parented to the scene graph at the level of
27  * the character's root joint; that is, it should not be parented under a node
28  * directly animated by any joints.
29  *
30  * Multiple combinations of these with different weights are used to implement
31  * soft-skinned vertices for an animated character.
32  */
33 class EXPCL_PANDA_CHAR JointVertexTransform : public VertexTransform {
34 private:
36 
37 PUBLISHED:
39  virtual ~JointVertexTransform();
40 
41  INLINE const CharacterJoint *get_joint() const;
42 
43  virtual void get_matrix(LMatrix4 &matrix) const;
44  virtual void mult_matrix(LMatrix4 &result, const LMatrix4 &previous) const;
45  virtual void accumulate_matrix(LMatrix4 &accum, PN_stdfloat weight) const;
46 
47  virtual void output(std::ostream &out) const;
48 
49 private:
50  PT(CharacterJoint) _joint;
51 
52 public:
53  static void register_with_read_factory();
54  virtual void write_datagram(BamWriter *manager, Datagram &dg);
55  virtual int complete_pointers(TypedWritable **plist, BamReader *manager);
56 
57 protected:
58  static TypedWritable *make_from_bam(const FactoryParams &params);
59  void fillin(DatagramIterator &scan, BamReader *manager);
60 
61 public:
62  static TypeHandle get_class_type() {
63  return _type_handle;
64  }
65  static void init_type() {
66  VertexTransform::init_type();
67  register_type(_type_handle, "JointVertexTransform",
68  VertexTransform::get_class_type());
69  }
70  virtual TypeHandle get_type() const {
71  return get_class_type();
72  }
73  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
74 
75 private:
76  static TypeHandle _type_handle;
77 
78  friend class CharacterJoint;
79 };
80 
81 #include "jointVertexTransform.I"
82 
83 #endif
VertexTransform::write_datagram
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
Definition: vertexTransform.cxx:126
VertexTransform::accumulate_matrix
virtual void accumulate_matrix(LMatrix4 &accum, PN_stdfloat weight) const
Adds the value of this transform's matrix, modified by the indicated weight, into the indicated accum...
Definition: vertexTransform.cxx:61
pandabase.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
DatagramIterator
A class to retrieve the individual data elements previously stored in a Datagram.
Definition: datagramIterator.h:27
TypedWritable::complete_pointers
virtual int complete_pointers(TypedWritable **p_list, BamReader *manager)
Receives an array of pointers, one for each time manager->read_pointer() was called in fillin().
Definition: typedWritable.cxx:81
register_type
void register_type(TypeHandle &type_handle, const std::string &name)
This inline function is just a convenient way to call TypeRegistry::register_type(),...
Definition: register_type.I:22
BamReader
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
Definition: bamReader.h:110
lightMutex.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
BamWriter
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
Definition: bamWriter.h:63
CharacterJoint
This represents one joint of the character's animation, containing an animating transform matrix.
Definition: characterJoint.h:32
TypedWritable
Base class for objects that can be written to and read from Bam files.
Definition: typedWritable.h:35
jointVertexTransform.I
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
Datagram
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition: datagram.h:38
TypeHandle
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:81
VertexTransform::mult_matrix
virtual void mult_matrix(LMatrix4 &result, const LMatrix4 &previous) const
Premultiplies this transform's matrix with the indicated previous matrix, so that the result is the n...
Definition: vertexTransform.cxx:48
FactoryParams
An instance of this class is passed to the Factory when requesting it to do its business and construc...
Definition: factoryParams.h:36
vertexTransform.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
plist
This is our own Panda specialization on the default STL list.
Definition: plist.h:35
JointVertexTransform
This is a specialization on VertexTransform that returns the transform necessary to move vertices as ...
Definition: jointVertexTransform.h:33
characterJoint.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
pointerTo.h
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.
VertexTransform
This is an abstract base class that holds a pointer to some transform, computed in some arbitrary way...
Definition: vertexTransform.h:35