TEveGeoShape.h

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// @(#)root/eve:$Id$
// Author: Matevz Tadel 2007
 
/*************************************************************************
 * Copyright (C) 1995-2007, Rene Brun and Fons Rademakers.               *
 * All rights reserved.                                                  *
 *                                                                       *
 * For the licensing terms see $ROOTSYS/LICENSE.                         *
 * For the list of contributors see $ROOTSYS/README/CREDITS.             *
 *************************************************************************/
 
#ifndef ROOT_TEveGeoShape
#define ROOT_TEveGeoShape
 
#include "TEveShape.h"
 
class TGeoShape;
class TGeoHMatrix;
class TGeoCompositeShape;
class TEveGeoShapeExtract;
class TBuffer3D;
 
class TEveGeoShape : public TEveShape
{
private:
   TEveGeoShape(const TEveGeoShape&);            // Not implemented
   TEveGeoShape& operator=(const TEveGeoShape&); // Not implemented
 
protected:
   Int_t               fNSegments;
   TGeoShape          *fShape;
   TGeoCompositeShape *fCompositeShape; //! Temporary holder (if passed shape is composite shape).
 
   static TGeoManager *fgGeoMangeur;
 
   static TEveGeoShape* SubImportShapeExtract(TEveGeoShapeExtract* gse, TEveElement* parent);
   TEveGeoShapeExtract* DumpShapeTree(TEveGeoShape* geon, TEveGeoShapeExtract* parent=nullptr);
 
   TGeoShape* MakePolyShape();
 
public:
   TEveGeoShape(const char* name="TEveGeoShape", const char* title=nullptr);
   ~TEveGeoShape() override;
 
   TObject* GetObject(const TEveException&) const override
   { const TObject* obj = this; return const_cast<TObject*>(obj); }
 
   Int_t       GetNSegments()  const { return fNSegments; }
   TGeoShape*  GetShape()      const { return fShape;     }
   void        SetNSegments(Int_t s);
   void        SetShape(TGeoShape* s);
 
   void ComputeBBox() override;
   void Paint(Option_t* option="") override;
 
   void Save(const char* file, const char* name="Extract");
   void SaveExtract(const char* file, const char* name);
   void WriteExtract(const char* name);
 
   static TEveGeoShape* ImportShapeExtract(TEveGeoShapeExtract* gse, TEveElement* parent=nullptr);
 
   // GeoProjectable
   virtual TBuffer3D*   MakeBuffer3D();
   TClass*      ProjectedClass(const TEveProjection* p) const override;
 
   static TGeoManager*  GetGeoMangeur();
   static TGeoHMatrix*  GetGeoHMatrixIdentity();
 
   ClassDefOverride(TEveGeoShape, 0); // Wrapper for TGeoShape with absolute positioning and color attributes allowing display of extracted TGeoShape's (without an active TGeoManager) and simplified geometries (needed for NLT projections).
};
 
//------------------------------------------------------------------------------
 
class TEveGeoShapeProjected : public TEveShape,
                              public TEveProjected
{
private:
   TEveGeoShapeProjected(const TEveGeoShapeProjected&);            // Not implemented
   TEveGeoShapeProjected& operator=(const TEveGeoShapeProjected&); // Not implemented
 
protected:
   TBuffer3D   *fBuff;
 
   void SetDepthLocal(Float_t d) override;
 
public:
   TEveGeoShapeProjected();
   ~TEveGeoShapeProjected() override;
 
   void SetProjection(TEveProjectionManager* proj, TEveProjectable* model) override;
   void UpdateProjection() override;
   TEveElement* GetProjectedAsElement() override { return this; }
 
   void ComputeBBox() override;
 
   ClassDefOverride(TEveGeoShapeProjected, 0);
};
 
#endif