diff --git a/EGrScene.h b/EGrScene.h
index a5c649c..42b0edb 100644
--- a/EGrScene.h
+++ b/EGrScene.h
@@ -75,6 +75,8 @@ class IEGrScene
       virtual bool ZoomChange( double dCoeff) = 0 ;
       virtual bool ZoomOnPoint( const Point3d& ptWin, double dCoeff) = 0 ;
       virtual bool ZoomWin( const Point3d& ptWin1, const Point3d& ptWin2) = 0 ;
+      virtual bool SetCameraType( bool bOrthoOrPersp) = 0 ;
+      virtual bool SetZoomType( int nZoomMode) = 0 ;
      // ShowMode
       virtual bool SetShowMode( int nShowMode) = 0 ;
       virtual int  GetShowMode( void) const = 0 ;
@@ -171,6 +173,9 @@ enum CameraDir { CT_NONE = 0,
                  CT_ISO_NE = 9,
                  CT_ISO_NW = 10,
                  CT_CPLANE = 11} ;
+//------------------------ Costanti per tipologia di zoom nel caso prospettico ---------------------
+enum PerspZoom  { ZT_STD = 0,
+                  ZT_DOLLY = 1} ;
 //------------------------ Costanti per tipo di visualizzazione --------------
 enum ShowMode { SM_WIREFRAME = 0,
                 SM_HIDDENLINE = 1,
diff --git a/EInAPI.h b/EInAPI.h
index a45d76d..d8aeba1 100644
--- a/EInAPI.h
+++ b/EInAPI.h
@@ -1070,6 +1070,8 @@ EIN_EXPORT BOOL __stdcall EgtGetTextureDimensions( const wchar_t* wsName, double
 EIN_EXPORT BOOL __stdcall EgtChangeTextureDimensions( const wchar_t* wsName, double dDimX, double dDimY) ;
 EIN_EXPORT BOOL __stdcall EgtGetImage( int nShowMode, const int TopCol[4], const int BottomCol[4],
                                        int nWidth, int nHeight, const wchar_t* wsName) ;
+EIN_EXPORT BOOL __stdcall EgtSetCameraType( BOOL bOrthoOrPersp, BOOL bRedraw) ;
+EIN_EXPORT BOOL __stdcall EgtSetZoomType( int nZoomType, BOOL bRedraw) ;
 
 // Image
 EIN_EXPORT BOOL __stdcall EgtGetImagePixels( const wchar_t* wsFile, int* pnPixelX, int* pnPixelY) ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index d1b8ca6..0498744 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -1380,6 +1380,8 @@ EXE_EXPORT bool ExeGetTextureDimensions( const std::string& sName, double& dDimX
 EXE_EXPORT bool ExeChangeTextureDimensions( const std::string& sName, double dDimX, double dDimY) ;
 EXE_EXPORT bool ExeGetImage( int nShowMode, Color colBackTop, Color colBackBottom,
                              int nWidth, int nHeight, const std::string& sFile) ;
+EXE_EXPORT bool ExeSetCameraType( bool bOrthoOrPersp, bool bRedraw) ;
+EXE_EXPORT bool ExeSetZoomType( int nMode, bool bRedraw) ;
 
 // Image
 EXE_EXPORT bool ExeGetImagePixels( const std::string& sFile, int& nPixelX, int& nPixelY) ;