]> git.mxchange.org Git - simgear.git/blob - simgear/scene/tgdb/SGReaderWriterBTG.cxx
Fixed a crash: the singleton needs to be instantiated the first time SGCommandMgr...
[simgear.git] / simgear / scene / tgdb / SGReaderWriterBTG.cxx
1 // Copyright (C) 2007 Tim Moore timoore@redhat.com
2 //
3 // This program is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU General Public License as
5 // published by the Free Software Foundation; either version 2 of the
6 // License, or (at your option) any later version.
7 //
8 // This program is distributed in the hope that it will be useful, but
9 // WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
11 // General Public License for more details.
12 //
13 // You should have received a copy of the GNU General Public License
14 // along with this program; if not, write to the Free Software
15 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
16 //
17
18 #ifdef HAVE_CONFIG_H
19 #  include <simgear_config.h>
20 #endif
21
22 #include <osgDB/FileNameUtils>
23 #include <osgDB/Registry>
24
25 #include <simgear/scene/model/ModelRegistry.hxx>
26 #include <simgear/scene/util/SGReaderWriterOptions.hxx>
27 #include <simgear/structure/exception.hxx>
28
29 #include "SGReaderWriterBTG.hxx"
30 #include "obj.hxx"
31
32 using namespace simgear;
33
34 SGReaderWriterBTG::SGReaderWriterBTG()
35 {
36     supportsExtension("btg", "SimGear btg database format");
37     // supportsExtension("btg.gz", "SimGear btg database format");
38 }
39
40 SGReaderWriterBTG::~SGReaderWriterBTG()
41 {
42 }
43
44 const char* SGReaderWriterBTG::className() const
45 {
46     return "BTG Database reader";
47 }
48
49 bool
50 SGReaderWriterBTG::acceptsExtension(const std::string& extension) const
51 {
52     // trick the osg extensions match algorithm to accept btg.gz files.
53     if (osgDB::convertToLowerCase(extension) == "gz")
54         return true;
55     return osgDB::ReaderWriter::acceptsExtension(extension);
56 }
57
58 osgDB::ReaderWriter::ReadResult
59 SGReaderWriterBTG::readNode(const std::string& fileName,
60                             const osgDB::Options* options) const
61 {
62     const SGReaderWriterOptions* sgOptions;
63     sgOptions = dynamic_cast<const SGReaderWriterOptions*>(options);
64     osg::Node* result = NULL;
65     try {
66         result = SGLoadBTG(fileName, sgOptions);
67         if (!result)
68             return ReadResult::FILE_NOT_HANDLED;
69     } catch (sg_exception& e) {
70         SG_LOG(SG_IO, SG_WARN, "error reading:" << fileName << ":" <<
71             e.getFormattedMessage());
72         return ReadResult::ERROR_IN_READING_FILE;
73     }
74     
75     return result;
76 }
77
78
79 typedef ModelRegistryCallback<DefaultProcessPolicy, NoCachePolicy,
80                               NoOptimizePolicy,
81                               NoSubstitutePolicy, BuildGroupBVHPolicy>
82 BTGCallback;
83
84 namespace
85 {
86 ModelRegistryCallbackProxy<BTGCallback> g_btgCallbackProxy("btg");
87 }