PhotoModelFactory.cpp

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#include "PhotoModelFactory.h"
#include "PhotoModel.h"
#include "Plugin.h"
#include "IException.h"
#include "FileName.h"

namespace Isis {
  PhotoModel *PhotoModelFactory::Create(Pvl &pvl) {
    // Get the algorithm name to create
    PvlGroup &algo = pvl.findObject("PhotometricModel")
                     .findGroup("Algorithm", Pvl::Traverse);

    QString algorithm = "";
    if (algo.hasKeyword("PhtName")) {
      algorithm = algo["PhtName"][0];
    }
    else if (algo.hasKeyword("Name")) {
      algorithm = algo["Name"][0];
    }
    else {
      QString msg = "Keyword [Name] or keyword [PhtName] must ";
      msg += "exist in [Group = Algorithm]";
      throw IException(IException::User, msg, _FILEINFO_);
    }

    // Open the factory plugin file
    Plugin *p = new Plugin;
    FileName f("PhotoModel.plugin");
    if(f.fileExists()) {
      p->read("PhotoModel.plugin");
    }
    else {
      p->read("$ISISROOT/lib/PhotoModel.plugin");
    }

    // Get the algorithm specific plugin and return it
    PhotoModel * (*plugin)(Pvl & pvl);
    plugin = (PhotoModel * ( *)(Pvl & pvl)) p->GetPlugin(algorithm);
    return (*plugin)(pvl);
  }
} // end namespace isis