//----------------------------------------------------------------------------
//  EgalTech 2013-2014
//----------------------------------------------------------------------------
// File : EGrScene.h          Data : 13.02.14           Versione : 1.5b1
// Contenuto : Dichiarazione della interfaccia IEGrScene per scena OpenGL.
//
//
//
// Modifiche : 13.02.14 DS Creazione modulo.
//
//
//----------------------------------------------------------------------------

#pragma once

//----------------------------------------------------------------------------
#include "/EgtDev/Include/EGkPoint3d.h"
#include "/EgtDev/Include/EGkBBox3d.h"
#include "/EgtDev/Include/EGkColor.h"
#include <string>
#include <windows.h>

class IGeomDB ;
class ILogger ;

//----------------------- Macro per import/export ----------------------------
#undef EGR_EXPORT
#if defined( I_AM_EGR)            // da definirsi solo nella DLL
   #define EGR_EXPORT __declspec( dllexport)
#else
   #define EGR_EXPORT __declspec( dllimport)
#endif

//----------------------------------------------------------------------------
class IEGrScene
{
   public :
     // Basic
      virtual ~IEGrScene( void) {}
      virtual bool Init( IGeomDB* pGeomDB) = 0 ;
      virtual bool CreateContext( HDC hDC, int nDriver, bool b2Buff, int nColorBits, int nDepthBits) = 0 ;
      virtual bool IsValid( void) = 0 ;
      virtual std::string GetOpenGLInfo( void) = 0 ;
      virtual std::string GetGLSLInfo( void) = 0 ;
      virtual std::string GetPixelFormatInfo( void) = 0 ;
      virtual bool RedrawWindow( void) = 0 ;
      virtual bool Reshape( int nW, int nH) = 0 ;
      virtual bool SetBackground( Color BackTop, Color BackBottom) = 0 ;
      virtual bool Prepare( void) = 0 ;
      virtual bool Draw( void) = 0 ;
      virtual bool Project( const Point3d& ptWorld, Point3d& ptView) = 0 ;
      virtual bool UnProject( const Point3d& ptView, Point3d& ptWorld) = 0 ;
      virtual void Destroy( void) = 0 ;
     // Camera
      virtual bool SetCenter( const Point3d& ptCenter) = 0 ;
      virtual bool SetCamera( double dAngVertDeg, double dAngOrizzDeg, double dDist) = 0 ;
      virtual bool SetCamera( int nDir, double dDist = 0) = 0 ;
      virtual const Point3d& GetCenter( void) = 0 ;
      virtual Point3d GetProjectedCenter( void) = 0 ;
      virtual void GetCamera( double* pdAngVertDeg, double* pdAngOrizzDeg, double* pdDist = nullptr) = 0 ;
      virtual int  GetCameraDir( void) = 0 ;
      virtual bool PanCamera( const Point3d& ptWinOld, const Point3d& ptWinNew) = 0 ;
      virtual bool RotateCamera( const Point3d& ptWinOld, const Point3d& ptWinNew) = 0 ;
      virtual bool ZoomAll( void) = 0 ;
      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 ;
     // Geometry
      virtual bool SetExtension( const BBox3d& b3Ext) = 0 ;
      virtual bool UpdateExtension( void) = 0 ;
     // Aux
      virtual bool SetWinRectAttribs( bool bOutline, Color WRcol) = 0 ;
      virtual bool SetWinRect( const Point3d& ptWinRectP1, const Point3d& ptWinRectP2) = 0 ;
      virtual bool ResetWinRect( void) = 0 ;
} ;

//-----------------------------------------------------------------------------
EGR_EXPORT IEGrScene* CreateEGrScene( void) ;


//------------------------ Costanti per tipo di driver OpenGL ----------------
enum OglDriver { OD_SOFT = 1,
                 OD_OLD = 2,
                 OD_NEW = 3} ;
//------------------------ Costanti per direzione Camera ---------------------
enum CameraDir { CT_NONE = 0,
                 CT_TOP = 1,
                 CT_FRONT = 2,
                 CT_RIGHT = 3,
                 CT_BACK = 4,
                 CT_LEFT = 5,
                 CT_BOTTOM = 6,
                 CT_ISO_SW = 7,
                 CT_ISO_SE = 8,
                 CT_ISO_NE = 9,
                 CT_ISO_NW = 10} ;