MovePlugin.cc 60.7 KB
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/*===========================================================================*\
 *                                                                           *
 *                              OpenFlipper                                  *
 *      Copyright (C) 2001-2009 by Computer Graphics Group, RWTH Aachen      *
 *                           www.openflipper.org                             *
 *                                                                           *
 *---------------------------------------------------------------------------*
 *  This file is part of OpenFlipper.                                        *
 *                                                                           *
 *  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 with the              *
 *  following exceptions:                                                    *
 *                                                                           *
 *  If other files instantiate templates or use macros                       *
 *  or inline functions from this file, or you compile this file and         *
 *  link it with other files to produce an executable, this file does        *
 *  not by itself cause the resulting executable to be covered by the        *
 *  GNU Lesser General Public License. This exception does not however       *
 *  invalidate any other reasons why the executable file might be            *
 *  covered by the GNU Lesser General Public License.                        *
 *                                                                           *
 *  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 LesserGeneral Public          *
 *  License along with OpenFlipper. If not,                                  *
 *  see <http://www.gnu.org/licenses/>.                                      *
 *                                                                           *
\*===========================================================================*/

/*===========================================================================*\
 *                                                                           *
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 *   $Revision$                                                       *
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 *   $Author$                                                      *
 *   $Date$                   *
 *                                                                           *
\*===========================================================================*/
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#include <QtGui>

#include "MovePlugin.hh"

#include <iostream>
#include <ACG/GL/GLState.hh>
#include <QStringList>
#include <ACG/QtScenegraph/QtTranslationManipulatorNode.hh>

#include <OpenFlipper/BasePlugin/PluginFunctions.hh>
#include <OpenFlipper/common/GlobalOptions.hh>

#include <MeshTools/MeshFunctions.hh>
#include <MeshTools/MeshInfoT.hh>

#ifdef USE_OPENMP
#include <omp.h>
#endif

#ifdef ENABLE_POLYLINE_SUPPORT
#include <ObjectTypes/PolyLine/PolyLine.hh>
#endif



/** \brief Default Constructor
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 *
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 */
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MovePlugin::MovePlugin() :
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    placeAndSnapAction_(0),
    manMode_(QtTranslationManipulatorNode::TranslationRotation),
    contextAction_(0),
    toAllTargets_(0),
    placeMode_(false)
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{
    manip_size_          = 1.0;
    manip_size_modifier_ = 1.0;

    selectionType_ = VERTEX;
    selectionConnected_ = false;

    axisA_ = 0;
    axisB_ = 1;
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    hide_ = true;
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    allTargets_ = false;
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}

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/** \brief Deconstructor
 *
 */
MovePlugin::~MovePlugin() {

	if(contextAction_) {
		delete contextAction_;
	}

	if(toAllTargets_) {
		delete toAllTargets_;
	}

	for(QList<movePropsWidget*>::iterator it = propsWindows_.begin();
		it != propsWindows_.end(); ++it) {

		if(*it) {
			delete *it;
		}
	}
}

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/*******************************************************************************
        BaseInterface implementation
 *******************************************************************************/

/** \brief Initialization of the plugin when it is loaded by the core
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 *
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 */
void MovePlugin::pluginsInitialized() {

  //PICKMODES
  emit addPickMode("Separator");
  emit addHiddenPickMode("Move");
  emit setPickModeMouseTracking ("Move", true);
  emit addHiddenPickMode("MoveSelection");
  emit setPickModeMouseTracking ("MoveSelection", true);

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  //KEYS
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  emit registerKey (Qt::Key_Shift, Qt::ShiftModifier, tr("Manipulator rotation"), true);
  emit registerKey (Qt::Key_Shift, Qt::NoModifier, tr("Manipulator rotation"), true);
  emit registerKey (Qt::Key_Control, Qt::ControlModifier, tr("Resize"), true);
  emit registerKey (Qt::Key_Control, Qt::NoModifier, tr("Resize"), true);
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  //SCRIPTING SLOT DESCRIPTIONS
  setDescriptions();
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  // CONTEXT MENU
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  toAllTargets_ = new QAction(tr("Apply to all targets"), this);
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  toAllTargets_->setCheckable(true);
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  toAllTargets_->setToolTip(tr("Apply transformation to all target objects"));
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  toAllTargets_->setStatusTip( toAllTargets_->toolTip() );

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  contextAction_ = new QAction(tr("Set properties"), this);
  contextAction_->setToolTip(tr("Set properties"));
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  contextAction_->setStatusTip( contextAction_->toolTip() );
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  emit addContextMenuItem(toAllTargets_ , CONTEXTNODEMENU );
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  emit addContextMenuItem(contextAction_ , CONTEXTNODEMENU );
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  connect(toAllTargets_,SIGNAL(toggled(bool) ),this,SLOT(setAllTargets(bool)));

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  connect( contextAction_ , SIGNAL( triggered() ),
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	   this, SLOT(showProps()) );
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  //TOOLBAR
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  toolbar_ = new QToolBar(tr("Transform and Move"));
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  toolBarActions_ = new QActionGroup(toolbar_);

  moveAction_ = new QAction(tr("&Move objects"), toolBarActions_);
  std::cerr << "Todo : Show all manipulators placed" << std::endl;
  moveAction_->setStatusTip(tr("Move object in 3D."));
  moveAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-objects.png") );
  moveAction_->setCheckable(true);
  toolbar_->addAction(moveAction_);

  moveSelectionAction_ = new QAction(tr("Move selections on objects"), toolBarActions_);
  moveSelectionAction_->setStatusTip(tr("Move selections in 3D."));
  moveSelectionAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-selections.png") );
  moveSelectionAction_->setCheckable(true);
  toolbar_->addAction(moveSelectionAction_);

  connect(toolBarActions_, SIGNAL(triggered(QAction*)), this, SLOT(slotSetMoveMode(QAction*)) );

  emit addToolbar(toolbar_);
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  pickToolbar_ = new QToolBar(tr("Transform and Move"));
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  pickToolbar_->setAttribute(Qt::WA_AlwaysShowToolTips, true);
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  pickToolBarActions_ = new QActionGroup(pickToolbar_);
  pickToolBarActions_->setExclusive (false);

  placeAction_ = new QAction(tr("Place manipulator"), pickToolBarActions_);
  placeAction_->setStatusTip(tr("Place manipulator on object. <Doubleclick>"));
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  placeAction_->setToolTip(tr("Place manipulator on object. <Doubleclick>"));
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  placeAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-place.png") );
  placeAction_->setCheckable(true);
  pickToolbar_->addAction(placeAction_);

  pickToolbar_->addSeparator ();

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  rotateTranslateAction_ = new QAction(tr("Rotate/Translate object"), pickToolBarActions_);
  rotateTranslateAction_->setStatusTip(tr("Rotate/Translate object."));
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  rotateTranslateAction_->setToolTip(tr("Rotate/Translate object."));
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  rotateTranslateAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-translaterotate.png") );
  rotateTranslateAction_->setCheckable(true);
  rotateTranslateAction_->setChecked(true);
  pickToolbar_->addAction(rotateTranslateAction_);
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  resizeAction_ = new QAction(tr("Resize object"), pickToolBarActions_);
  resizeAction_->setStatusTip(tr("Resize object. <Control>"));
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  resizeAction_->setToolTip(tr("Resize object. <Control>"));
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  resizeAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-resize.png") );
  resizeAction_->setCheckable(true);
  pickToolbar_->addAction(resizeAction_);

  pickToolbar_->addSeparator ();

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  rotateManipAction_ = new QAction(tr("Rotate manipulator"), pickToolBarActions_);
  rotateManipAction_->setStatusTip(tr("Rotate manipulator. <Shift>"));
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  rotateManipAction_->setToolTip(tr("Rotate manipulator. <Shift>"));
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  rotateManipAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-maniprotate.png") );
  rotateManipAction_->setCheckable(true);
  pickToolbar_->addAction(rotateManipAction_);
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  placeAndSnapAction_ = new QAction(tr("Locally translate manipulator"), pickToolBarActions_);
  placeAndSnapAction_->setStatusTip(tr("Locally translate manipulator. Press and hold <Alt> for snapping."));
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  placeAndSnapAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-placeandsnap.png") );
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  placeAndSnapAction_->setCheckable(true);
  pickToolbar_->addAction(placeAndSnapAction_);

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  smallerManipAction_ = new QAction(tr("Decrease size of manipulator"), pickToolBarActions_);
  smallerManipAction_->setStatusTip(tr("Make manipulator smaller. <Mouse wheel up>"));
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  smallerManipAction_->setToolTip(tr("Make manipulator smaller. <Mouse wheel up>"));
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  smallerManipAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-manipsmall.png") );
  smallerManipAction_->setCheckable(false);
  pickToolbar_->addAction(smallerManipAction_);

  biggerManipAction_ = new QAction(tr("&Increase size of manipulator"), pickToolBarActions_);
  biggerManipAction_->setStatusTip(tr("Make manipulator bigger. <Mouse wheel down>"));
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  biggerManipAction_->setToolTip(tr("Make manipulator bigger. <Mouse wheel down>"));
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  biggerManipAction_->setIcon(QIcon(OpenFlipper::Options::iconDirStr()+OpenFlipper::Options::dirSeparator()+"move-manipbig.png") );
  biggerManipAction_->setCheckable(false);
  pickToolbar_->addAction(biggerManipAction_);

  connect(pickToolBarActions_, SIGNAL(triggered(QAction*)), this, SLOT(slotPickToolbarAction(QAction*)) );

  emit setPickModeToolbar ("Move", pickToolbar_);
  emit setPickModeToolbar ("MoveSelection", pickToolbar_);

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}


/*******************************************************************************
        ToolBoxInterface implementation
 *******************************************************************************/

/** \brief Create the move toolbox-widget and return a reference to it
 *
 * @param _widget A reference to the move toolbox that we will return
 * @return return wether the widget was successfully generated
 */
bool MovePlugin::initializeToolbox(QWidget*& _widget)
{
   toolboxActive_ = false;
   tool_ = new moveToolbarWidget();
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//    tool_ -> setMaximumWidth(300);
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   _widget = tool_;

   connect(tool_->moveToOrigin,SIGNAL(clicked() ),this,SLOT(slotMoveToOrigin()));

   tool_->moveToOrigin->setIcon( QIcon(OpenFlipper::Options::iconDirStr() + OpenFlipper::Options::dirSeparator() + "moveToCOG.png") );
   tool_->moveToOrigin->setIconSize(QSize(48,48));

   connect(tool_->unifyBoundingBoxDiagonal,SIGNAL(clicked() ),this,SLOT(slotUnifyBoundingBoxDiagonal()));
   tool_->unifyBoundingBoxDiagonal->setIcon( QIcon(OpenFlipper::Options::iconDirStr() + OpenFlipper::Options::dirSeparator() + "unifyBB.png") );
   tool_->unifyBoundingBoxDiagonal->setIconSize(QSize(48,48));

   lastActiveManipulator_ = -1;

   return true;
}


/*******************************************************************************
        MouseInterface implementation
 *******************************************************************************/

/** \brief MouseWheel event occured
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 *
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 * @param _event the event that occured
 */
void MovePlugin::slotMouseWheelEvent(QWheelEvent * _event, const std::string & /*_mode*/)
{
   manip_size_modifier_ = manip_size_modifier_ - (float)_event->delta() / 120.0 * 0.1;
   for ( PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS) ; o_it != PluginFunctions::objectsEnd(); ++o_it)
         o_it->manipulatorNode()->set_size(manip_size_ * manip_size_modifier_);
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   emit visibilityChanged (-1);
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}


//------------------------------------------------------------------------------

/** \brief MousePress event occured
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 *
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 * @param _event the event that occured
 */
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void MovePlugin::slotMouseEvent(QMouseEvent* _event) {
    if (((PluginFunctions::pickMode() == ("Move")) || (PluginFunctions::pickMode() == ("MoveSelection")))
            && PluginFunctions::actionMode() == Viewer::PickingMode) {
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        if (_event->type() == QEvent::MouseButtonDblClick || (_event->type() == QEvent::MouseButtonPress
                && _event->button() == Qt::LeftButton && (placeAction_->isChecked() || placeMode_))) {
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            placeManip(_event, (placeMode_ && (PluginFunctions::pickMode() == ("MoveSelection"))));
            placeAction_->setChecked(false);
            updateManipulatorDialog();
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            if (placeMode_) {
                manMode_ = QtTranslationManipulatorNode::TranslationRotation;

                for (PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS); o_it
                        != PluginFunctions::objectsEnd(); ++o_it)
                    if (o_it->manipPlaced())
                        o_it->manipulatorNode()->setMode(manMode_);

                resizeAction_->setChecked(false);
                rotateManipAction_->setChecked(false);
                rotateTranslateAction_->setChecked(true);
                placeAndSnapAction_->setChecked(false);
            }

            placeMode_ = false;
            return;

        } else if (placeMode_) {

            /*
             * Move manipulator along with cursor if placeAndSnap mode
             * is active. Snap to nearest geometry element (vertex, line, face center)
             * depending on which selection type is active.
             */

            placeManip(_event, (PluginFunctions::pickMode() == ("MoveSelection")));
            updateManipulatorDialog();
            return;
        }

        // interaction
        ACG::SceneGraph::MouseEventAction action(_event);
        PluginFunctions::traverse(action);

        if (_event->buttons() == Qt::LeftButton)
            emit visibilityChanged(-1);

    }
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}

/*******************************************************************************
        KeyInterface implementation
 *******************************************************************************/

void MovePlugin::slotKeyEvent (QKeyEvent* _event)
{
  if (_event->key() == Qt::Key_Control)
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    setManipMode (QtTranslationManipulatorNode::Resize);
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  else if (_event->key () == Qt::Key_Shift)
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    setManipMode (QtTranslationManipulatorNode::LocalRotation);
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}

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//------------------------------------------------------------------------------

void MovePlugin::slotKeyReleaseEvent (QKeyEvent* _event)
{
  if ((_event->key() == Qt::Key_Control && manMode_ == QtTranslationManipulatorNode::Resize) ||
      (_event->key() == Qt::Key_Shift && manMode_ == QtTranslationManipulatorNode::LocalRotation))
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    setManipMode (QtTranslationManipulatorNode::TranslationRotation);
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}
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/*******************************************************************************
        PickingInterface implementation
 *******************************************************************************/

/** \brief slot is called when the pickMode changed
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 * @param _mode new pickMode
 */
void MovePlugin::slotPickModeChanged( const std::string& _mode)
{
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  moveAction_->setChecked(_mode == "Move");
  moveSelectionAction_->setChecked(_mode == "MoveSelection");
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  hide_ = !(_mode == "Move" || _mode == "MoveSelection");
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  showManipulators();

  if (!hide_)
  {
    switch (manMode_)
    {
      case QtTranslationManipulatorNode::Resize:
        PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
        break;
      case QtTranslationManipulatorNode::LocalRotation:
        PluginFunctions::setViewObjectMarker (&objectMarker_);
        break;
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      case QtTranslationManipulatorNode::Place:
        PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
        break;
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      case QtTranslationManipulatorNode::TranslationRotation:
        PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
        break;
    }
  }
  else
    PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
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}


/*******************************************************************************
        MovePlugin implementation
 *******************************************************************************/

/** \brief Move object with given transformation matrix
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 *
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 * @param mat transformation matrix
 * @param _id id of the object
 */
void MovePlugin::moveObject(ACG::Matrix4x4d mat, int _id) {
  BaseObjectData* object;
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  if ( ! PluginFunctions::getObject(_id,object) )
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    return;

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  if  ( object->dataType()  == DATA_TRIANGLE_MESH ) {
    transformMesh(mat , *PluginFunctions::triMesh(object) );
  } else  if  ( object->dataType()  == DATA_POLY_MESH ) {
    transformMesh(mat , *PluginFunctions::polyMesh(object) );
  #ifdef ENABLE_POLYLINE_SUPPORT
  } else  if  ( object->dataType()  == DATA_POLY_LINE ) {
    transformPolyLine(mat , *PluginFunctions::polyLine(object) );
  #endif
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  } else  if  ( object->dataType()  == DATA_PLANE ) {
    PluginFunctions::planeNode(object)->transform(mat);
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  } else {

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    emit log(LOGERR,tr("moveObject called for unsupported Object Type"));
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    return;
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  }

  emit updatedObject(_id);
  emit createBackup(_id,"Move");
}


//------------------------------------------------------------------------------

/** \brief Move selection on an object with given transformation matrix
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 *
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 * Which Selection (Vertex, Edge, Face) is used is determined by the
 * current SelectionMode in SelectionPlugin.
 * If the Plugin is unable to communicate with SelectionPlugin, Vertex Selection is used.
 *
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 * @param mat
 * @param _id
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 */
void MovePlugin::moveSelection(ACG::Matrix4x4d mat, int _id) {

  if (selectionType_ == VERTEX)
    transformVertexSelection( _id , mat );
  else if (selectionType_ == FACE)
    transformFaceSelection( _id , mat );
  else if (selectionType_ == EDGE)
    transformEdgeSelection( _id , mat );

  emit updatedObject(_id);
//   emit createBackup(_id,"MoveSelection");
}

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//------------------------------------------------------------------------------

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/** \brief Set the manipulator manipulation mode
 *
 * @param _mode Mode
 */

void MovePlugin::setManipMode (QtTranslationManipulatorNode::ManipulatorMode _mode)
{
  if (_mode != manMode_)
  {
    manMode_ = _mode;
    if ((PluginFunctions::pickMode() == "Move" ) || (PluginFunctions::pickMode() == "MoveSelection" )) {
        for ( PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS) ;
              o_it != PluginFunctions::objectsEnd(); ++o_it)
           if ( o_it->manipPlaced() )
                o_it->manipulatorNode()->setMode (_mode);
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      if (!hide_)
        switch (manMode_)
        {
          case QtTranslationManipulatorNode::Resize:
            PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
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            placeMode_ = false;
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            break;
          case QtTranslationManipulatorNode::LocalRotation:
            PluginFunctions::setViewObjectMarker (&objectMarker_);
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            placeMode_ = false;
            break;
          case QtTranslationManipulatorNode::Place:
            PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
            placeMode_ = true;
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            break;
          case QtTranslationManipulatorNode::TranslationRotation:
            PluginFunctions::setViewObjectMarker (PluginFunctions::defaultViewObjectMarker ());
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            placeMode_ = false;
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            break;
        }
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    }
    switch (manMode_)
    {
      case QtTranslationManipulatorNode::Resize:
        resizeAction_->setChecked (true);
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        rotateManipAction_->setChecked (false);
        rotateTranslateAction_->setChecked (false);
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        placeAndSnapAction_->setChecked (false);
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        break;
      case QtTranslationManipulatorNode::LocalRotation:
        resizeAction_->setChecked (false);
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        rotateManipAction_->setChecked (true);
        rotateTranslateAction_->setChecked (false);
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        placeAndSnapAction_->setChecked (false);
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        break;
      case QtTranslationManipulatorNode::TranslationRotation:
        resizeAction_->setChecked (false);
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        rotateManipAction_->setChecked (false);
        rotateTranslateAction_->setChecked (true);
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        placeAndSnapAction_->setChecked (false);
        break;
      case QtTranslationManipulatorNode::Place:
        resizeAction_->setChecked (false);
        rotateManipAction_->setChecked (false);
        rotateTranslateAction_->setChecked (false);
        placeAndSnapAction_->setChecked (true);
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        break;
    }
  }
}

//------------------------------------------------------------------------------

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/** \brief Hide context menu entry when right clicking on node other than manipulator node
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 * @param _nodeId Identifier of node that has been clicked
 */
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void MovePlugin::slotUpdateContextMenuNode(int _nodeId) {
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    ACG::SceneGraph::BaseNode* node = ACG::SceneGraph::find_node(PluginFunctions::getSceneGraphRootNode(), _nodeId);
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    if (node == 0)
        return;
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    if (node->className() != "QtTranslationManipulatorNode") {
        contextAction_->setVisible(false);
    } else {
        contextAction_->setVisible(true);
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    }
}
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//------------------------------------------------------------------------------

/** \brief move the object when its manipulator moves
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 *
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 * @param _node the manipulator node
 * @param _event the mouse event
 */
void MovePlugin::manipulatorMoved( QtTranslationManipulatorNode* _node , QMouseEvent* _event) {

  // React on event only in move mode
  if ( PluginFunctions::pickMode() != "Move" && PluginFunctions::pickMode() != "MoveSelection" )
    return;

  OpenFlipper::Options::redrawDisabled( true );

  // Apply changes only on Release for moveMode and after every movement in MoveSelection Mode
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  if ( ((_event->type() == QEvent::MouseButtonRelease) || (PluginFunctions::pickMode() == "MoveSelection")) && !placeMode_) {
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    int objectId = _node->getIdentifier();

    ACG::Matrix4x4d mat;
    mat.identity();
    mat = _node->matrix();

    // Reset Node
    _node->loadIdentity();
    _node->set_center(mat.transform_point(_node->center()));

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    // move the object which corresponds to the manipulator
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    if (PluginFunctions::pickMode() != "MoveSelection")
      moveObject( mat, objectId );
    else
      moveSelection( mat, objectId );

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    // move all other targets without manipulator
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    if(allTargets_) {
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      for (PluginFunctions::ObjectIterator o_it(PluginFunctions::TARGET_OBJECTS); o_it
          != PluginFunctions::objectsEnd(); ++o_it) {
        if ((o_it->id() != objectId) && !o_it->manipulatorNode()->visible()) { // If it has its own manipulator active, dont move it
          if (PluginFunctions::pickMode() != "MoveSelection")
            moveObject(mat, o_it->id());
          else
            moveSelection(mat, o_it->id());
        }
      }
    }
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    lastActiveManipulator_ = objectId;
    updateManipulatorDialog();
  }

  OpenFlipper::Options::redrawDisabled( false );

}


//------------------------------------------------------------------------------

/** \brief update object when its manipulator changes position
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 *
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 * @param _node the manipulator node
 */
void MovePlugin::ManipulatorPositionChanged(QtTranslationManipulatorNode* _node ) {

  // Position has been changed of the manipulator by a direct function
  int objectId = _node->getIdentifier();

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  if ( objectId > 0 ){

    BaseObjectData* object;
    PluginFunctions::getObject(objectId,object);
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    // Assume that it has a good position now
    object->manipPlaced( true );
  }
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  // Show manipulator only if in Move mode
  if ( PluginFunctions::pickMode() == "Move" )
    _node->show();

  lastActiveManipulator_ = objectId;
  updateManipulatorDialog();

}


//------------------------------------------------------------------------------

/** \brief Place and show the Manipulator
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 *
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 * @param _event  mouseEvent that occured
 */
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void MovePlugin::placeManip(QMouseEvent * _event, bool _snap) {
    unsigned int node_idx, target_idx;
    OpenMesh::Vec3d hitPoint;
    BaseObjectData* object;
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    bool successfullyPicked = false;
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    /*
     * Snap manipulator to nearest geometry
     * element depending on which selection type is
     * active.
     */
    if (_snap) {
        successfullyPicked = PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_FACE, _event->pos(), node_idx,
                target_idx, &hitPoint) && PluginFunctions::getPickedObject(node_idx, object);
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        if(!successfullyPicked) {
            //emit log(LOGWARN, tr("Picking failed"));
            return;
        }
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        if (selectionType_ == VERTEX) {
            if ( object->dataType(DATA_TRIANGLE_MESH) ) {
                hitPoint = getNearestVertex(PluginFunctions::triMesh(object), target_idx, hitPoint);
            } else if ( object->dataType(DATA_POLY_MESH) ) {
                hitPoint = getNearestVertex(PluginFunctions::polyMesh(object), target_idx, hitPoint);
            }
        } else if (selectionType_ == EDGE) {
            if ( object->dataType(DATA_TRIANGLE_MESH) ) {
                hitPoint = getNearestEdge(PluginFunctions::triMesh(object), target_idx, hitPoint);
            } else if ( object->dataType(DATA_POLY_MESH) ) {
                hitPoint = getNearestEdge(PluginFunctions::polyMesh(object), target_idx, hitPoint);
            }
        } else if (selectionType_ == FACE) {
            if ( object->dataType(DATA_TRIANGLE_MESH) ) {
                hitPoint = getNearestFace(PluginFunctions::triMesh(object), target_idx, hitPoint);
            } else if ( object->dataType(DATA_POLY_MESH) ) {
                hitPoint = getNearestFace(PluginFunctions::polyMesh(object), target_idx, hitPoint);
            }
        }
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    } else {
        successfullyPicked = PluginFunctions::scenegraphPick(ACG::SceneGraph::PICK_ANYTHING, _event->pos(), node_idx,
                target_idx, &hitPoint) && PluginFunctions::getPickedObject(node_idx, object);
    }
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    if (successfullyPicked) {
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        object->manipPlaced(true);
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        /*if (!object->picked(node_idx)) {
            emit log(LOGWARN, tr("Picking failed"));
        }*/
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        object->manipulatorNode()->loadIdentity();
        object->manipulatorNode()->set_center(hitPoint);
        object->manipulatorNode()->set_draw_cylinder(true);
        object->manipulatorNode()->set_autosize(QtTranslationManipulatorNode::Once);
        object->manipulatorNode()->set_size(manip_size_ * manip_size_modifier_);
        object->manipulatorNode()->setMode(manMode_);
        object->manipulatorNode()->show();
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        object->manipulatorNode()->apply_transformation(PluginFunctions::pickMode() == "Move");
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        connect(object->manipulatorNode() , SIGNAL(manipulatorMoved(QtTranslationManipulatorNode*,QMouseEvent*)),
                this , SLOT( manipulatorMoved(QtTranslationManipulatorNode*,QMouseEvent*)));

        connect(object->manipulatorNode() , SIGNAL(positionChanged(QtTranslationManipulatorNode*)),
                this , SLOT( ManipulatorPositionChanged(QtTranslationManipulatorNode*)));

        lastActiveManipulator_ = object->id();

        emit updateView();

    } else {
        //emit log(LOGWARN, tr("Picking failed"));
    }
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}


//------------------------------------------------------------------------------

/** \brief Checks if the manipulators should be visible or not
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 */
void MovePlugin::showManipulators( )
{
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	if (!hide_ && (toolboxActive_ || (PluginFunctions::pickMode() == "Move")
			|| (PluginFunctions::pickMode() == "MoveSelection"))) {
		for (PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS); o_it
				!= PluginFunctions::objectsEnd(); ++o_it)

			if (o_it->manipPlaced()) {
				o_it->manipulatorNode()->show();
				o_it->manipulatorNode()->apply_transformation(
						PluginFunctions::pickMode() == "Move");
			}
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	} else {
		for (PluginFunctions::ObjectIterator o_it(PluginFunctions::ALL_OBJECTS); o_it
				!= PluginFunctions::objectsEnd(); ++o_it)

			o_it->manipulatorNode()->hide();
	}
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	emit updateView();
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}

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//------------------------------------------------------------------------------
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/** \brief Get Dialog Widget that contains the button
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 * @param _but Reference to QPushButton object that has been pressed
 */
movePropsWidget* MovePlugin::getDialogFromButton(QPushButton* _but) {

    if(_but == 0) return 0;
    return dynamic_cast<movePropsWidget*>((((_but->parentWidget())->parentWidget())->parentWidget()));
}
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//------------------------------------------------------------------------------

/** \brief Position of manipulator in tab changed
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 */
void MovePlugin::slotSetPosition() {
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    QPushButton* but = dynamic_cast<QPushButton*>(QObject::sender());
    movePropsWidget* pW = getDialogFromButton(but);
    if(pW == 0) return;
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    TriMesh::Point newpos;
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