126 lines
3.2 KiB
C++
126 lines
3.2 KiB
C++
/**
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* PANDA 3D SOFTWARE
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* Copyright (c) Carnegie Mellon University. All rights reserved.
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*
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* All use of this software is subject to the terms of the revised BSD
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* license. You should have received a copy of this license along
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* with this source code in a file named "LICENSE."
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*
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* @file animBundleNode.cxx
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* @author drose
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* @date 2002-03-06
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*/
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#include "animBundleNode.h"
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#include "datagram.h"
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#include "datagramIterator.h"
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#include "bamReader.h"
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#include "bamWriter.h"
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TypeHandle AnimBundleNode::_type_handle;
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/**
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*
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*/
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PandaNode *AnimBundleNode::
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make_copy() const {
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return new AnimBundleNode(*this);
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}
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/**
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* Returns true if it is generally safe to flatten out this particular kind of
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* Node by duplicating instances, false otherwise (for instance, a Camera
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* cannot be safely flattened, because the Camera pointer itself is
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* meaningful).
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*/
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bool AnimBundleNode::
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safe_to_flatten() const {
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return false;
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}
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/**
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* Recursively walks the scene graph beginning at the indicated node (which
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* need not be an AnimBundleNode), and returns the first AnimBundle found.
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* Returns NULL if no AnimBundle can be found.
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*/
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AnimBundle *AnimBundleNode::
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find_anim_bundle(PandaNode *root) {
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nassertr(root != (PandaNode *)NULL, NULL);
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if (root->is_of_type(AnimBundleNode::get_class_type())) {
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AnimBundleNode *anode = DCAST(AnimBundleNode, root);
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AnimBundle *anim = anode->get_bundle();
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if (anim != (AnimBundle *)NULL) {
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return anim;
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}
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}
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Children cr = root->get_children();
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int num_children = cr.get_num_children();
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for (int i = 0; i < num_children; i++) {
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AnimBundle *anim = find_anim_bundle(cr.get_child(i));
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if (anim != (AnimBundle *)NULL) {
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return anim;
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}
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}
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return NULL;
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}
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/**
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* Tells the BamReader how to create objects of type AnimBundleNode.
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*/
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void AnimBundleNode::
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register_with_read_factory() {
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BamReader::get_factory()->register_factory(get_class_type(), make_from_bam);
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}
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/**
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* Writes the contents of this object to the datagram for shipping out to a
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* Bam file.
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*/
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void AnimBundleNode::
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write_datagram(BamWriter *manager, Datagram &dg) {
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PandaNode::write_datagram(manager, dg);
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manager->write_pointer(dg, _bundle);
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}
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/**
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* Receives an array of pointers, one for each time manager->read_pointer()
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* was called in fillin(). Returns the number of pointers processed.
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*/
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int AnimBundleNode::
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complete_pointers(TypedWritable **p_list, BamReader* manager) {
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int pi = PandaNode::complete_pointers(p_list, manager);
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_bundle = DCAST(AnimBundle, p_list[pi++]);
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return pi;
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}
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/**
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* This function is called by the BamReader's factory when a new object of
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* this type is encountered in the Bam file. It should create the object and
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* extract its information from the file.
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*/
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TypedWritable *AnimBundleNode::
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make_from_bam(const FactoryParams ¶ms) {
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AnimBundleNode *node = new AnimBundleNode;
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DatagramIterator scan;
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BamReader *manager;
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parse_params(params, scan, manager);
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node->fillin(scan, manager);
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return node;
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}
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/**
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* This internal function is called by make_from_bam to read in all of the
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* relevant data from the BamFile for the new PandaNode.
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*/
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void AnimBundleNode::
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fillin(DatagramIterator &scan, BamReader* manager) {
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PandaNode::fillin(scan, manager);
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manager->read_pointer(scan);
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}
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