PluginFunctionsBaseIterator.cc 4.57 KB
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//=============================================================================
//
//                               OpenFlipper
//        Copyright (C) 2008 by Computer Graphics Group, RWTH Aachen
//                           www.openflipper.org
//
//-----------------------------------------------------------------------------
//
//                                License
//
//  OpenFlipper is free software: you can redistribute it and/or modify
//  it under the terms of the GNU Lesser General Public License as published by
//  the Free Software Foundation, either version 3 of the License, or
//  (at your option) any later version.
//
//  OpenFlipper is distributed in the hope that it will be useful,
//  but WITHOUT ANY WARRANTY; without even the implied warranty of
//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//  GNU Lesser General Public License for more details.
//
//  You should have received a copy of the GNU Lesser General Public License
//  along with OpenFlipper.  If not, see <http://www.gnu.org/licenses/>.
//
//-----------------------------------------------------------------------------
//
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//   $Revision$
//   $Author$
//   $Date$
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//
//=============================================================================




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

#include <OpenFlipper/common/Types.hh>

#include "PluginFunctions.hh"

namespace PluginFunctions {


BaseObjectIterator::BaseObjectIterator( 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();

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  currentPos = currentPos->next();
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  while ( (currentPos != objectRoot()) ) {

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

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

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

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

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


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

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

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


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

BaseObjectIterator& BaseObjectIterator::operator++() {

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

  // Get the next objectData element in the tree
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  currentPos = currentPos->next();
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  while ( (currentPos != objectRoot() ) ) {

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

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

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

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

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

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

/** This operator returns a pointer to the current object the iterator
 * points to.
 *
 * @return Pointer to the current ObjectData
 */
BaseObject* BaseObjectIterator::operator*() {
   return pos_;
}

/// Return Iterator to Object End
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BaseObjectIterator baseObjectsEnd() {
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   return BaseObjectIterator(0);
}


}