Panda3D
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00001 // Filename: animBundleNode.cxx 00002 // Created by: drose (06Mar02) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) Carnegie Mellon University. All rights reserved. 00008 // 00009 // All use of this software is subject to the terms of the revised BSD 00010 // license. You should have received a copy of this license along 00011 // with this source code in a file named "LICENSE." 00012 // 00013 //////////////////////////////////////////////////////////////////// 00014 00015 #include "animBundleNode.h" 00016 #include "datagram.h" 00017 #include "datagramIterator.h" 00018 #include "bamReader.h" 00019 #include "bamWriter.h" 00020 00021 TypeHandle AnimBundleNode::_type_handle; 00022 00023 00024 //////////////////////////////////////////////////////////////////// 00025 // Function: AnimBundleNode::make_copy 00026 // Access: Public, Virtual 00027 // Description: 00028 //////////////////////////////////////////////////////////////////// 00029 PandaNode *AnimBundleNode:: 00030 make_copy() const { 00031 return new AnimBundleNode(*this); 00032 } 00033 00034 //////////////////////////////////////////////////////////////////// 00035 // Function: AnimBundleNode::safe_to_flatten 00036 // Access: Public, Virtual 00037 // Description: Returns true if it is generally safe to flatten out 00038 // this particular kind of Node by duplicating 00039 // instances, false otherwise (for instance, a Camera 00040 // cannot be safely flattened, because the Camera 00041 // pointer itself is meaningful). 00042 //////////////////////////////////////////////////////////////////// 00043 bool AnimBundleNode:: 00044 safe_to_flatten() const { 00045 return false; 00046 } 00047 00048 //////////////////////////////////////////////////////////////////// 00049 // Function: AnimBundleNode::find_anim_bundle 00050 // Access: Published, Static 00051 // Description: Recursively walks the scene graph beginning at the 00052 // indicated node (which need not be an AnimBundleNode), 00053 // and returns the first AnimBundle found. Returns NULL 00054 // if no AnimBundle can be found. 00055 //////////////////////////////////////////////////////////////////// 00056 AnimBundle *AnimBundleNode:: 00057 find_anim_bundle(PandaNode *root) { 00058 nassertr(root != (PandaNode *)NULL, NULL); 00059 00060 if (root->is_of_type(AnimBundleNode::get_class_type())) { 00061 AnimBundleNode *anode = DCAST(AnimBundleNode, root); 00062 AnimBundle *anim = anode->get_bundle(); 00063 if (anim != (AnimBundle *)NULL) { 00064 return anim; 00065 } 00066 } 00067 00068 Children cr = root->get_children(); 00069 int num_children = cr.get_num_children(); 00070 for (int i = 0; i < num_children; i++) { 00071 AnimBundle *anim = find_anim_bundle(cr.get_child(i)); 00072 if (anim != (AnimBundle *)NULL) { 00073 return anim; 00074 } 00075 } 00076 00077 return NULL; 00078 } 00079 00080 //////////////////////////////////////////////////////////////////// 00081 // Function: AnimBundleNode::register_with_read_factory 00082 // Access: Public, Static 00083 // Description: Tells the BamReader how to create objects of type 00084 // AnimBundleNode. 00085 //////////////////////////////////////////////////////////////////// 00086 void AnimBundleNode:: 00087 register_with_read_factory() { 00088 BamReader::get_factory()->register_factory(get_class_type(), make_from_bam); 00089 } 00090 00091 //////////////////////////////////////////////////////////////////// 00092 // Function: AnimBundleNode::write_datagram 00093 // Access: Public, Virtual 00094 // Description: Writes the contents of this object to the datagram 00095 // for shipping out to a Bam file. 00096 //////////////////////////////////////////////////////////////////// 00097 void AnimBundleNode:: 00098 write_datagram(BamWriter *manager, Datagram &dg) { 00099 PandaNode::write_datagram(manager, dg); 00100 manager->write_pointer(dg, _bundle); 00101 } 00102 00103 //////////////////////////////////////////////////////////////////// 00104 // Function: AnimBundleNode::complete_pointers 00105 // Access: Public, Virtual 00106 // Description: Receives an array of pointers, one for each time 00107 // manager->read_pointer() was called in fillin(). 00108 // Returns the number of pointers processed. 00109 //////////////////////////////////////////////////////////////////// 00110 int AnimBundleNode:: 00111 complete_pointers(TypedWritable **p_list, BamReader* manager) { 00112 int pi = PandaNode::complete_pointers(p_list, manager); 00113 _bundle = DCAST(AnimBundle, p_list[pi++]); 00114 return pi; 00115 } 00116 00117 //////////////////////////////////////////////////////////////////// 00118 // Function: AnimBundleNode::make_from_bam 00119 // Access: Protected, Static 00120 // Description: This function is called by the BamReader's factory 00121 // when a new object of this type is encountered 00122 // in the Bam file. It should create the object 00123 // and extract its information from the file. 00124 //////////////////////////////////////////////////////////////////// 00125 TypedWritable *AnimBundleNode:: 00126 make_from_bam(const FactoryParams ¶ms) { 00127 AnimBundleNode *node = new AnimBundleNode; 00128 DatagramIterator scan; 00129 BamReader *manager; 00130 00131 parse_params(params, scan, manager); 00132 node->fillin(scan, manager); 00133 00134 return node; 00135 } 00136 00137 //////////////////////////////////////////////////////////////////// 00138 // Function: AnimBundleNode::fillin 00139 // Access: Protected 00140 // Description: This internal function is called by make_from_bam to 00141 // read in all of the relevant data from the BamFile for 00142 // the new PandaNode. 00143 //////////////////////////////////////////////////////////////////// 00144 void AnimBundleNode:: 00145 fillin(DatagramIterator &scan, BamReader* manager) { 00146 PandaNode::fillin(scan, manager); 00147 manager->read_pointer(scan); 00148 }