PluginFunctionsIterator.cc

/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
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 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
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 *  OpenFlipper is free software: you can redistribute it and/or modify      *
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 *  or inline functions from this file, or you compile this file and         *
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 *  covered by the GNU Lesser General Public License.                        *
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\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
 *   $Revision: 6727 $                                                         *
 *   $Author: moebius $                                                      *
 *   $Date: 2009-08-05 08:03:50 +0200 (Mi, 05. Aug 2009) $                   *
 *                                                                           *
\*===========================================================================*/




//=============================================================================
//
//  Plugin Functions
//
//=============================================================================

#include <OpenFlipper/common/Types.hh>

#include "PluginFunctions.hh"

namespace PluginFunctions {


ObjectIterator::ObjectIterator( IteratorRestriction _restriction , DataType _dataType) {

  // Initialize with invalid pos
  pos_ = 0;

  // Store the restriction for the operator ( Source/Target )
  restriction_ = _restriction;

  // Store the requested DataType
  dataType_ = _dataType;

  // Start at the root Node
  BaseObject* currentPos = objectRoot();

  // Take the first element which is an baseObjectData
  proceedToNextBaseObjectData(currentPos);

  while ( (currentPos != objectRoot()) ) {

    // Return only target objects if requested
    if ( (restriction_ == TARGET_OBJECTS) && (! currentPos->target() ) ) {
      proceedToNextBaseObjectData(currentPos);
      continue;
    }

    // Return only source objects if requested
    if ( (restriction_ == SOURCE_OBJECTS) && (! currentPos->source() ) ) {
      proceedToNextBaseObjectData(currentPos);
      continue;
    }

    // Return only the right dataType
    if ( _dataType != DATA_ALL )
      if ( ! (currentPos->dataType( dataType_ ) ) ) {
        proceedToNextBaseObjectData(currentPos);
        continue;
      }

    // found a valid object
    pos_ = dynamic_cast<BaseObjectData* > (currentPos);
    break;
  }
}

ObjectIterator::ObjectIterator(BaseObjectData* pos, IteratorRestriction _restriction , DataType _data)
{
   restriction_ = _restriction;
   pos_         = pos;
   dataType_    = _data;
};


bool ObjectIterator::operator==( const ObjectIterator& _rhs) {
   return ( _rhs.pos_ == pos_ );
}

bool ObjectIterator::operator!=( const ObjectIterator& _rhs) {
   return ( _rhs.pos_ != pos_ );
}

ObjectIterator& ObjectIterator::operator=( const ObjectIterator& _rhs) {
   pos_ = _rhs.pos_;
   return *this;
}


ObjectIterator::pointer ObjectIterator::operator->(){
   return pos_;
}

ObjectIterator& ObjectIterator::operator++() {

  // Convert our pointer to the basic one
  BaseObject* currentPos = dynamic_cast< BaseObject* >(pos_);

  // Get the next objectData element in the tree
  proceedToNextBaseObjectData(currentPos);

  while ( (currentPos != objectRoot() ) ) {

    // Return only target objects if requested
    if ( (restriction_ == TARGET_OBJECTS) && (! currentPos->target() ) ) {
      proceedToNextBaseObjectData(currentPos);
      continue;
    }

    // Return only source objects if requested
    if ( (restriction_ == SOURCE_OBJECTS) && (! currentPos->source() ) ) {
      proceedToNextBaseObjectData(currentPos);
      continue;
    }

    // Return only the right dataType
    if ( ! (currentPos->dataType( dataType_ ) ) ) {
      proceedToNextBaseObjectData(currentPos);
      continue;
    }

    // found a valid object
    pos_ = dynamic_cast<BaseObjectData* > (currentPos);
    return *this;
  }

  // No valid object found
  pos_ = 0;
  return *this;
}

ObjectIterator& ObjectIterator::operator--() {
   std::cerr << "TODO :--" << std::endl;
   return *this;
}

BaseObjectData* ObjectIterator::operator*() {
   return pos_;
}

ObjectIterator objectsEnd() {
   return ObjectIterator(0);
}

void ObjectIterator::proceedToNextBaseObjectData(BaseObject*& _object) {

  _object = _object->next();

  // Go through the tree and stop at the root node or if we found a baseObjectData Object
  while ( (_object != objectRoot()) && !dynamic_cast<BaseObjectData* > (_object)  )
     _object = _object->next();
}



}