Panda3D
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modelRoot.cxx
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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 modelRoot.cxx
10 * @author drose
11 * @date 2002-03-16
12 */
13
14#include "modelRoot.h"
15
16TypeHandle ModelRoot::_type_handle;
17
18
19/**
20 * Returns a newly-allocated Node that is a shallow copy of this one. It will
21 * be a different Node pointer, but its internal data may or may not be shared
22 * with that of the original Node.
23 */
25make_copy() const {
26 return new ModelRoot(*this);
27}
28
29/**
30 * Tells the BamReader how to create objects of type ModelRoot.
31 */
34 BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
35}
36
37/**
38 * Writes the contents of this object to the datagram for shipping out to a
39 * Bam file.
40 */
42write_datagram(BamWriter *manager, Datagram &dg) {
43 ModelNode::write_datagram(manager, dg);
44}
45
46/**
47 * This function is called by the BamReader's factory when a new object of
48 * type ModelRoot is encountered in the Bam file. It should create the
49 * ModelRoot and extract its information from the file.
50 */
51TypedWritable *ModelRoot::
52make_from_bam(const FactoryParams &params) {
53 ModelRoot *node = new ModelRoot("");
55 BamReader *manager;
56
57 parse_params(params, scan, manager);
58 node->fillin(scan, manager);
59
60 return node;
61}
62
63/**
64 * This internal function is called by make_from_bam to read in all of the
65 * relevant data from the BamFile for the new ModelRoot.
66 */
67void ModelRoot::
68fillin(DatagramIterator &scan, BamReader *manager) {
69 ModelNode::fillin(scan, manager);
70}
void parse_params(const FactoryParams &params, DatagramIterator &scan, BamReader *&manager)
Takes in a FactoryParams, passed from a WritableFactory into any TypedWritable's make function,...
Definition bamReader.I:275
This is the fundamental interface for extracting binary objects from a Bam file, as generated by a Ba...
Definition bamReader.h:110
static WritableFactory * get_factory()
Returns the global WritableFactory for generating TypedWritable objects.
Definition bamReader.I:177
This is the fundamental interface for writing binary objects to a Bam file, to be extracted later by ...
Definition bamWriter.h:63
A class to retrieve the individual data elements previously stored in a Datagram.
An ordered list of data elements, formatted in memory for transmission over a socket or writing to a ...
Definition datagram.h:38
An instance of this class is passed to the Factory when requesting it to do its business and construc...
void register_factory(TypeHandle handle, CreateFunc *func, void *user_data=nullptr)
Registers a new kind of thing the Factory will be able to create.
Definition factory.I:73
virtual void write_datagram(BamWriter *manager, Datagram &dg)
Writes the contents of this object to the datagram for shipping out to a Bam file.
A node of this type is created automatically at the root of each model file that is loaded.
Definition modelRoot.h:27
virtual PandaNode * make_copy() const
Returns a newly-allocated Node that is a shallow copy of this one.
Definition modelRoot.cxx:25
static void register_with_read_factory()
Tells the BamReader how to create objects of type ModelRoot.
Definition modelRoot.cxx:33
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 modelRoot.cxx:42
A basic node of the scene graph or data graph.
Definition pandaNode.h:65
TypeHandle is the identifier used to differentiate C++ class types.
Definition typeHandle.h:81
Base class for objects that can be written to and read from Bam files.
PANDA 3D SOFTWARE Copyright (c) Carnegie Mellon University.