TEventChangeManager.cxx File Reference

#include "TEventChangeManager.hxx"
#include "TVEventChangeHandler.hxx"
#include "TGUIManager.hxx"
#include "TEventDisplay.hxx"
#include "TEventManager.hxx"
#include "TRecurseGeoManager.hxx"
#include "TG4Event.h"
#include <TQObject.h>
#include <TGButton.h>
#include <TGeoManager.h>
#include <TGeoNode.h>
#include <TGeoVolume.h>
#include <TEveGeoShape.h>
#include <TEveGeoNode.h>
#include <TEveManager.h>
#include <iostream>

Go to the source code of this file.

Functions
	ClassImp (EDep::TEventChangeManager) namespace

Function Documentation

ClassImp

(

EDep::TEventChangeManager

)

This takes a geometry id and "clones" it into the Eve display.

Definition at line 21 of file TEventChangeManager.cxx.

          {

    /// This takes a geometry id and "clones" it into the Eve display.
    TEveGeoShape* GeometryClone(TGeoVolume* currVolume) {

        TGeoShape* currShape = currVolume->GetShape();
        TEveGeoShape *fakeShape = new TEveGeoShape(currShape->GetName());
        
        TGeoMatrix* currMat = gGeoManager->GetCurrentMatrix();
        TGeoMatrix* mat = currMat->MakeClone();
        fakeShape->SetTransMatrix(*mat);
        
        // Clone the shape so that it can be displayed.  This has to play some
        // fancy footsie to get the gGeoManager memory management right.  It
        // first saves the current manager, then gets an internal geometry
        // manager used by TEveGeoShape, and then resets the old manager once
        // the shape is created.
        TGeoManager* saveGeom = gGeoManager;
        gGeoManager = fakeShape->GetGeoMangeur();
        TGeoShape* clonedShape 
            = dynamic_cast<TGeoShape*> (currShape->Clone("fakeShape"));
        fakeShape->SetShape(clonedShape);
        gGeoManager = saveGeom;
        
        return fakeShape;
    }

    struct PickVolumes: TRecurseGeoManager {
        std::vector<std::string> fVolumesToShow;
        TEveElementList* fEveList;
        PickVolumes(TEveElementList* eveList) : fEveList(eveList) {}
        bool Action(int) {
            if (!fEveList) return true;
            TGeoNode* node = gGeoManager->GetCurrentNode();
            std::string name(node->GetName());
            for (std::vector<std::string>::iterator v = fVolumesToShow.begin();
                 v != fVolumesToShow.end(); ++v) {
                if (name.find(*v) == std::string::npos) continue;
                std::cout << "Show volume " << node->GetName() << std::endl;
                TEveGeoShape *shape = GeometryClone(node->GetVolume());
                shape->SetMainColor(node->GetVolume()->GetLineColor());
                shape->SetMainTransparency(90);
                fEveList->AddElement(shape);
                break;
            }
            return true;
        }
    };
}