编写一个读写倾斜测量数据.s3c文件格式的OSG插件osgdb_s3c

VS新建一个空的DLL工程

ReaderWriterS3C.cpp源文件

#include <osg/Notify>

#include <osgDB/FileNameUtils>
#include <osgDB/FileUtils>
#include <osgDB/fstream>
#include <osgDB/Registry>

#include <iostream>
#include <stdio.h>
#include <string.h>

#include <osgDB/ReadFile>
#ifdef _DEBUG
#pragma comment(lib, "osgd.lib")
#pragma comment(lib, "osgDBd.lib")
#else
#pragma comment(lib, "osg.lib")
#pragma comment(lib, "osgDB.lib")
#endif // DEBUG

class ReaderWriterS3C : public osgDB::ReaderWriter
{
    public:

        ReaderWriterS3C()
        {
            supportsExtension("s3c","s3c format");
        }

        virtual const char* className() const { return "s3c reader"; }

        virtual ReadResult readNode(const std::string& file, const osgDB::ReaderWriter::Options* options) const
        {
            std::string ext = osgDB::getLowerCaseFileExtension(file);
            if (!acceptsExtension(ext)) return ReadResult::FILE_NOT_HANDLED;

            std::string fileName = osgDB::findDataFile( file, options );
            if (fileName.empty()) return ReadResult::FILE_NOT_FOUND;

            OSG_INFO << "Reading file "<<fileName<<std::endl;

            osg::Group* g = new osg::Group;
            std::string dir = osgDB::getFilePath(fileName);
            std::string dataPath = dir + "\\Data\\";
            osgDB::DirectoryContents dirNames = osgDB::getDirectoryContents(dataPath);
            for each (std::string dir in dirNames)
            {
                if (dir.find(".") != std::string::npos)
                    continue;
                std::string osgbFile = dataPath + dir + "\\" + dir + ".osgb";
                g->addChild(osgDB::readNodeFile(osgbFile));
            }

            return g;

        }

};

// now register with Registry to instantiate the above
// reader/writer.
REGISTER_OSGPLUGIN(s3c, ReaderWriterS3C)