RenderPickingPlugin.cc

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#include "RenderPickingPlugin.hh"

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

#include <QGLFormat>
#include <QMenu>

#include <QtWidgets>

void RenderPickingPlugin::initializePlugin()
{
  pickRendererMode_ = ACG::SceneGraph::PICK_ANYTHING;
}

QAction* RenderPickingPlugin::optionsAction() {

  QMenu* menu = new QMenu("Picking Renderer Target");

  // Recreate actionGroup
  QActionGroup* pickingTargetsGroup = new QActionGroup( this );
  pickingTargetsGroup->setExclusive( true );

  // Always set PickAnything ( will be overridden by others)
  QAction * action = new QAction("PICK_ANYTHING" , pickingTargetsGroup );
  action->setCheckable( true );
  action->setChecked(true);

  action = new QAction("PICK_VERTEX" , pickingTargetsGroup );
  action->setCheckable( true );
  if (pickRendererMode_ == ACG::SceneGraph::PICK_VERTEX)
    action->setChecked(true);

  action = new QAction("PICK_EDGE" , pickingTargetsGroup );
  action->setCheckable( true );
  if (pickRendererMode_ == ACG::SceneGraph::PICK_EDGE)
    action->setChecked(true);

  action = new QAction("PICK_SPLINE" , pickingTargetsGroup );
  action->setCheckable( true );
  if (pickRendererMode_ == ACG::SceneGraph::PICK_SPLINE)
    action->setChecked(true);

  action = new QAction("PICK_FACE" , pickingTargetsGroup );
  action->setCheckable( true );
  if (pickRendererMode_ == ACG::SceneGraph::PICK_FACE)
    action->setChecked(true);

  action = new QAction("PICK_FRONT_VERTEX" , pickingTargetsGroup );
  action->setCheckable( true );
  if (pickRendererMode_ == ACG::SceneGraph::PICK_FRONT_VERTEX)
    action->setChecked(true);

  action = new QAction("PICK_FRONT_EDGE" , pickingTargetsGroup );
  action->setCheckable( true );
  if (pickRendererMode_ == ACG::SceneGraph::PICK_FRONT_EDGE)
    action->setChecked(true);

  action = new QAction("PICK_CELL" , pickingTargetsGroup );
  action->setCheckable( true );
  if (pickRendererMode_ == ACG::SceneGraph::PICK_CELL)
    action->setChecked(true);

  menu->addActions(pickingTargetsGroup->actions());

  connect(pickingTargetsGroup,SIGNAL(triggered( QAction * )),this,SLOT(slotPickTargetChanged( QAction * )));

  return menu->menuAction();
}

void RenderPickingPlugin::slotPickTargetChanged( QAction *  _action) {

  // Prepare Picking Debugger Flag
  if ( _action->text() == "PICK_ANYTHING") {
    pickRendererMode_ = ACG::SceneGraph::PICK_ANYTHING;
  } else if ( _action->text() == "PICK_VERTEX") {
    pickRendererMode_ = ACG::SceneGraph::PICK_VERTEX;
  } else if ( _action->text() == "PICK_EDGE") {
    pickRendererMode_ = ACG::SceneGraph::PICK_EDGE;
  } else if ( _action->text() == "PICK_SPLINE") {
    pickRendererMode_ = ACG::SceneGraph::PICK_SPLINE;
  } else if ( _action->text() == "PICK_FACE") {
    pickRendererMode_ = ACG::SceneGraph::PICK_FACE;
  } else if ( _action->text() == "PICK_FRONT_VERTEX") {
    pickRendererMode_ = ACG::SceneGraph::PICK_FRONT_VERTEX;
  } else if ( _action->text() == "PICK_FRONT_EDGE") {
    pickRendererMode_ = ACG::SceneGraph::PICK_FRONT_EDGE;
  } else if ( _action->text() == "PICK_CELL") {
    pickRendererMode_ = ACG::SceneGraph::PICK_CELL;
  } else {
    std::cerr << "Error : optionHandling unable to find pick mode!!! " << _action->text().toStdString() << std::endl;
    pickRendererMode_ = ACG::SceneGraph::PICK_ANYTHING;
  }

}

QString RenderPickingPlugin::rendererName() {
  return QString("Picking renderer");
}

void RenderPickingPlugin::supportedDrawModes(ACG::SceneGraph::DrawModes::DrawMode& _mode) {
  _mode =  ACG::SceneGraph::DrawModes::DEFAULT;
}


void RenderPickingPlugin::render(ACG::GLState* _glState, Viewer::ViewerProperties& _properties) {

  //store and restore blend state ... no idea if this is actually necessary
  bool blendState = _glState->blending();
  if(_glState->compatibilityProfile())
  {
    ACG::GLState::disable(GL_LIGHTING);
  }
  glClear(GL_DEPTH_BUFFER_BIT);

  // do the picking
  _glState->pick_init (true);
  ACG::SceneGraph::PickAction action(*_glState, pickRendererMode_, _properties.drawMode());
  _glState->enable(GL_DEPTH_TEST);
  ACG::SceneGraph::traverse_multipass( PluginFunctions::getSceneGraphRootNode() , action,*_glState);

  if(_glState->compatibilityProfile())
  {
    ACG::GLState::enable(GL_LIGHTING);
  }
  if(!blendState)
      ACG::GLState::disable(GL_BLEND);

}

QString RenderPickingPlugin::checkOpenGL() {
  if (!ACG::openGLVersion(2, 0))
    return QString("Insufficient OpenGL Version! OpenGL 2.0 or higher required");

  return QString("");
}