105 lines
2.7 KiB
C++
105 lines
2.7 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 paramNodePath.cxx
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* @author rdb
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* @date 2015-02-25
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*/
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#include "paramNodePath.h"
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#include "dcast.h"
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#include "pandaNode.h"
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TypeHandle ParamNodePath::_type_handle;
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/**
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*
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*/
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void ParamNodePath::
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output(ostream &out) const {
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out << "node path " << _node_path;
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}
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/**
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* Tells the BamReader how to create objects of type ParamValue.
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*/
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void ParamNodePath::
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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 ParamNodePath::
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write_datagram(BamWriter *manager, Datagram &dg) {
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ParamValueBase::write_datagram(manager, dg);
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if (manager->get_file_minor_ver() < 40) {
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// Before bam 6.40, we did not support writing NodePaths. Instaed, we
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// write the PandaNode pointer and pray there is an unambiguous path.
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if (_node_path.is_empty()) {
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manager->write_pointer(dg, NULL);
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} else {
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manager->write_pointer(dg, _node_path.node());
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}
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} else {
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_node_path.write_datagram(manager, dg);
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}
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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 ParamNodePath::
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complete_pointers(TypedWritable **p_list, BamReader *manager) {
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int pi = ParamValueBase::complete_pointers(p_list, manager);
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if (manager->get_file_minor_ver() >= 40) {
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pi += _node_path.complete_pointers(p_list + pi, manager);
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} else {
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_node_path = NodePath(DCAST(PandaNode, p_list[pi++]));
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}
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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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* type ParamValue is encountered in the Bam file. It should create the
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* ParamValue and extract its information from the file.
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*/
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TypedWritable *ParamNodePath::
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make_from_bam(const FactoryParams ¶ms) {
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ParamNodePath *param = new ParamNodePath;
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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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param->fillin(scan, manager);
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return param;
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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 ParamValue.
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*/
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void ParamNodePath::
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fillin(DatagramIterator &scan, BamReader *manager) {
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ParamValueBase::fillin(scan, manager);
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if (manager->get_file_minor_ver() >= 40) {
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_node_path.fillin(scan, manager);
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} else {
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manager->read_pointer(scan);
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}
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}
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