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sequenceNode.h
1 // Filename: sequenceNode.h
2 // Created by: drose (06Mar02)
3 //
4 ////////////////////////////////////////////////////////////////////
5 //
6 // PANDA 3D SOFTWARE
7 // Copyright (c) Carnegie Mellon University. All rights reserved.
8 //
9 // All use of this software is subject to the terms of the revised BSD
10 // license. You should have received a copy of this license along
11 // with this source code in a file named "LICENSE."
12 //
13 ////////////////////////////////////////////////////////////////////
14 
15 #ifndef SEQUENCENODE_H
16 #define SEQUENCENODE_H
17 
18 #include "pandabase.h"
19 
20 #include "selectiveChildNode.h"
21 #include "animInterface.h"
22 #include "clockObject.h"
23 
24 ////////////////////////////////////////////////////////////////////
25 // Class : SequenceNode
26 // Description : A node that automatically cycles through rendering
27 // each one of its children according to its frame rate.
28 ////////////////////////////////////////////////////////////////////
29 class EXPCL_PANDA_PGRAPHNODES SequenceNode : public SelectiveChildNode, public AnimInterface {
30 PUBLISHED:
31  INLINE SequenceNode(const string &name);
32 
33 protected:
34  SequenceNode(const SequenceNode &copy);
35 
36 PUBLISHED:
37  virtual int get_num_frames() const;
38  INLINE void set_frame_rate(double frame_rate);
39 
40 public:
41  virtual PandaNode *make_copy() const;
42  virtual bool safe_to_combine() const;
43  virtual bool safe_to_combine_children() const;
44 
45  virtual bool cull_callback(CullTraverser *trav, CullTraverserData &data);
46  virtual int get_first_visible_child() const;
47  virtual bool has_single_child_visibility() const;
48  virtual int get_visible_child() const;
49 
50  virtual void output(ostream &out) const;
51 
52 public:
53  static void register_with_read_factory();
54  virtual void write_datagram(BamWriter *manager, Datagram &dg);
55 
56 protected:
57  static TypedWritable *make_from_bam(const FactoryParams &params);
58  void fillin(DatagramIterator &scan, BamReader *manager);
59 
60 public:
61  static TypeHandle get_class_type() {
62  return _type_handle;
63  }
64  static void init_type() {
65  SelectiveChildNode::init_type();
66  AnimInterface::init_type();
67  register_type(_type_handle, "SequenceNode",
68  SelectiveChildNode::get_class_type(),
69  AnimInterface::get_class_type());
70  }
71  virtual TypeHandle get_type() const {
72  return get_class_type();
73  }
74  virtual TypeHandle force_init_type() {init_type(); return get_class_type();}
75 
76 private:
77  static TypeHandle _type_handle;
78 };
79 
80 #include "sequenceNode.I"
81 
82 #endif
A basic node of the scene graph or data graph.
Definition: pandaNode.h:72
virtual int get_visible_child() const
Returns the index number of the currently visible child of this node.
Definition: pandaNode.cxx:563
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: pandaNode.cxx:4164
virtual bool has_single_child_visibility() const
Should be overridden by derived classes to return true if this kind of node has the special property ...
Definition: pandaNode.cxx:551
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
Definition: bamReader.h:122
virtual int get_first_visible_child() const
Returns the index number of the first visible child of this node, or a number >= get_num_children() i...
Base class for objects that can be written to and read from Bam files.
Definition: typedWritable.h:37
virtual int get_num_frames() const
Returns the number of frames in the animation.
This collects together the pieces of data that are accumulated for each node while walking the scene ...
virtual PandaNode * make_copy() const
Returns a newly-allocated PandaNode that is a shallow copy of this one.
Definition: pandaNode.cxx:604
A node that automatically cycles through rendering each one of its children according to its frame ra...
Definition: sequenceNode.h:29
A base class for nodes like LODNode and SequenceNode that select only one visible child at a time...
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
Definition: bamWriter.h:73
This is the fundamental interface for things that have a play/loop/stop type interface for frame-base...
Definition: animInterface.h:39
static void register_with_read_factory()
Tells the BamReader how to create objects of type PandaNode.
Definition: pandaNode.cxx:4153
virtual bool safe_to_combine_children() const
Returns true if it is generally safe to combine the children of this PandaNode with each other...
Definition: pandaNode.cxx:295
virtual bool safe_to_combine() const
Returns true if it is generally safe to combine this particular kind of PandaNode with other kinds of...
Definition: pandaNode.cxx:281
An instance of this class is passed to the Factory when requesting it to do its business and construc...
Definition: factoryParams.h:40
A class to retrieve the individual data elements previously stored in a Datagram. ...
TypeHandle is the identifier used to differentiate C++ class types.
Definition: typeHandle.h:85
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition: datagram.h:43
This object performs a depth-first traversal of the scene graph, with optional view-frustum culling...
Definition: cullTraverser.h:48
virtual bool cull_callback(CullTraverser *trav, CullTraverserData &data)
This function will be called during the cull traversal to perform any additional operations that shou...
Definition: pandaNode.cxx:477