/usr/include/oce/OpenGl

// Created on: 2011-09-20
// Created by: Sergey ZERCHANINOV
// Copyright (c) 2011-2014 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and / or modify it
// under the terms of the GNU Lesser General Public version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _OpenGl_View_Header
#define _OpenGl_View_Header

#include <MMgt_TShared.hxx>
#include <Standard_DefineHandle.hxx>

#include <TColStd_Array2OfReal.hxx>
#include <NCollection_List.hxx>

#include <Quantity_NameOfColor.hxx>
#include <Aspect_FillMethod.hxx>
#include <Aspect_GradientFillMethod.hxx>
#include <Aspect_TypeOfTriedronPosition.hxx>
#include <Aspect_CLayer2d.hxx>

#include <InterfaceGraphic_Graphic3d.hxx>
#include <InterfaceGraphic_Visual3d.hxx>

#include <Graphic3d_CView.hxx>
#include <Graphic3d_CGraduatedTrihedron.hxx>
#include <Graphic3d_SequenceOfHClipPlane.hxx>
#include <Visual3d_TypeOfSurfaceDetail.hxx>

#include <OpenGl_telem_view.hxx>
#include <OpenGl_LayerList.hxx>
#include <OpenGl_Light.hxx>

#include <Handle_OpenGl_Context.hxx>
#include <Handle_OpenGl_GraphicDriver.hxx>
#include <Handle_OpenGl_Display.hxx>
#include <Handle_OpenGl_Workspace.hxx>
#include <Handle_OpenGl_View.hxx>
#include <Handle_OpenGl_Texture.hxx>

struct OPENGL_BG_TEXTURE
{
  Tuint             TexId;
  Tint              Width;
  Tint              Height;
  Aspect_FillMethod Style;
};

struct OPENGL_BG_GRADIENT
{
  TEL_COLOUR color1;
  TEL_COLOUR color2;
  Aspect_GradientFillMethod type;
};

struct OPENGL_EXTRA_REP
{
  Tfloat  vrp[3];
  Tfloat  vpn[3];
  Tfloat  vup[3];
  TEL_VIEW_MAPPING map;
  Tfloat  scaleFactors[3];
};

struct OPENGL_ZCLIP
{
  struct {
    Standard_Boolean   IsOn;
    Standard_ShortReal Limit; /* in the range [0., 1.] */
  } Back;
  struct {
    Standard_Boolean   IsOn;
    Standard_ShortReal Limit; /* in the range [0., 1.] */
  } Front;
};

struct OPENGL_FOG
{
  Standard_Boolean   IsOn;
  Standard_ShortReal Front; /* in the range [0., 1.] */
  Standard_ShortReal Back; /* in the range [0., 1.] */
  TEL_COLOUR         Color;
};

class OpenGl_GraduatedTrihedron;
class OpenGl_Structure;
class OpenGl_Trihedron;
class Handle(OpenGl_PrinterContext);
class OpenGl_StateCounter;

class OpenGl_View : public MMgt_TShared
{
 public:
  OpenGl_View (const CALL_DEF_VIEWCONTEXT &AContext, OpenGl_StateCounter* theCounter);
  virtual ~OpenGl_View ();

  void ReleaseGlResources (const Handle(OpenGl_Context)& theCtx);

  void SetTextureEnv (const Handle(OpenGl_Context)&       theCtx,
                      const Handle(Graphic3d_TextureEnv)& theTexture);
  void SetSurfaceDetail (const Visual3d_TypeOfSurfaceDetail AMode);
  void SetBackfacing (const Standard_Integer AMode);
  void SetLights (const CALL_DEF_VIEWCONTEXT &AContext);
  void SetAntiAliasing (const Standard_Boolean AMode) { myAntiAliasing = AMode; }
  void SetClipPlanes (const Graphic3d_SequenceOfHClipPlane &thePlanes) { myClipPlanes = thePlanes; }
  void SetVisualisation (const CALL_DEF_VIEWCONTEXT &AContext);

  void SetClipLimit (const Graphic3d_CView& theCView);
  void SetMapping (const Handle(OpenGl_Display)& theGlDisplay, const Graphic3d_CView& theCView);
  void SetOrientation (const Graphic3d_CView& theCView);

  void SetFog (const Graphic3d_CView& theCView, const Standard_Boolean theFlag);

  void TriedronDisplay (const Handle(OpenGl_Context)&       theCtx,
                        const Aspect_TypeOfTriedronPosition thePosition,
                        const Quantity_NameOfColor          theColor,
                        const Standard_Real                 theScale,
                        const Standard_Boolean              theAsWireframe);
  void TriedronErase (const Handle(OpenGl_Context)& theCtx);

  void GraduatedTrihedronDisplay (const Handle(OpenGl_Context)&        theCtx,
                                  const Graphic3d_CGraduatedTrihedron& theCubic);
  void GraduatedTrihedronErase (const Handle(OpenGl_Context)& theCtx);

  Standard_Boolean ProjectObjectToRaster (const Standard_Integer w, const Standard_Integer h,
                                          const Standard_ShortReal x, const Standard_ShortReal y, const Standard_ShortReal z,
                                          Standard_ShortReal &xr, Standard_ShortReal &yr);
  Standard_Boolean ProjectRasterToObject (const Standard_Integer w, const Standard_Integer h,
                                          const Standard_Integer xr, const Standard_Integer yr,
                                          Standard_ShortReal &x, Standard_ShortReal &y, Standard_ShortReal &z);
  Standard_Boolean ProjectRasterToObjectWithRay (const Standard_Integer w, const Standard_Integer h,
                                                 const Standard_Integer xr, const Standard_Integer yr,
                                                 Standard_ShortReal &x, Standard_ShortReal &y, Standard_ShortReal &z,
                                                 Standard_ShortReal &dx, Standard_ShortReal &dy, Standard_ShortReal &dz);
  void GetMatrices (TColStd_Array2OfReal&  theMatOrient,
                    TColStd_Array2OfReal&  theMatMapping,
                    const Standard_Boolean theIsCustom) const;

  Standard_Real Height () const { return (myExtra.map.window.xmax - myExtra.map.window.xmin); }
  Standard_Real Width () const { return (myExtra.map.window.ymax - myExtra.map.window.ymin); }

  Standard_Integer Backfacing () const { return myBackfacing; }

  const TEL_TRANSFORM_PERSISTENCE * BeginTransformPersistence (const Handle(OpenGl_Context)& theCtx,
                                                               const TEL_TRANSFORM_PERSISTENCE *theTransPers);
  void EndTransformPersistence (const Handle(OpenGl_Context)& theCtx);

  //! Add structure to display list with specified priority.
  //! The structure will be added to associated with it z layer.
  //! If the z layer is not presented in the view, the structure will
  //! be displayed in default bottom-level z layer.
  void DisplayStructure (const OpenGl_Structure *theStructure,
                         const Standard_Integer  thePriority);

  //! Erase structure from display list.
  void EraseStructure (const OpenGl_Structure *theStructure);

  //! Insert a new top-level z layer with ID <theLayerId>
  void AddZLayer (const Standard_Integer theLayerId);

  //! Remove a z layer with ID <theLayerId>
  void RemoveZLayer (const Standard_Integer theLayerId);

  //! Display structure in z layer with ID <theNewLayerId>
  //! If the layer with ID <theNewLayerId> is not presented in the view,
  //! the structure will be displayed in default bottom-level layer.
  void ChangeZLayer (const OpenGl_Structure *theStructure,
                     const Standard_Integer  theNewLayerId);

  void CreateBackgroundTexture (const Standard_CString AFileName, const Aspect_FillMethod AFillStyle);
  void SetBackgroundTextureStyle (const Aspect_FillMethod FillStyle);
  void SetBackgroundGradient (const Quantity_Color& AColor1, const Quantity_Color& AColor2, const Aspect_GradientFillMethod AType);
  void SetBackgroundGradientType (const Aspect_GradientFillMethod AType);

  void Render (const Handle(OpenGl_PrinterContext)& thePrintContext,
               const Handle(OpenGl_Workspace)&      theWorkspace,
               const Graphic3d_CView&               theCView,
               const Aspect_CLayer2d&               theCUnderLayer,
               const Aspect_CLayer2d&               theCOverLayer);


  void DrawBackground (const Handle(OpenGl_Workspace)& theWorkspace);

  //! Returns list of OpenGL Z-layers.
  const OpenGl_LayerList& LayerList() const { return myZLayers; }

  //! Returns list of openGL light sources.
  const OpenGl_ListOfLight& LightList() const { return myLights; }

  //! Returns OpenGL environment map.
  const Handle(OpenGl_Texture)& TextureEnv() const { return myTextureEnv; }

  //! Returns visualization mode for objects in the view.
  Visual3d_TypeOfSurfaceDetail SurfaceDetail() const { return mySurfaceDetail; }

#ifdef HAVE_OPENCL
  //! Returns modification state for ray-tracing.
  Standard_Size ModificationState() const { return myModificationState; }
#endif

public:

  DEFINE_STANDARD_RTTI(OpenGl_View) // Type definition

 protected:

  void RenderStructs (const Handle(OpenGl_Workspace) &AWorkspace);
  void RedrawLayer2d (const Handle(OpenGl_PrinterContext)& thePrintContext,
                      const Graphic3d_CView&               theCView,
                      const Aspect_CLayer2d&               theCLayer);

  Handle(OpenGl_Texture) myTextureEnv;
  Visual3d_TypeOfSurfaceDetail mySurfaceDetail; //WSSurfaceDetail
  Standard_Integer myBackfacing; //WSBackfacing

  OPENGL_BG_TEXTURE myBgTexture; //WSBgTexture
  OPENGL_BG_GRADIENT myBgGradient; //WSBgGradient

  //{ myViewRep
  Tmatrix3    myOrientationMatrix;
  Tmatrix3    myMappingMatrix;

  //Tint        shield_indicator;
  //TEL_COLOUR  shield_colour;
  //Tint        border_indicator;
  //TEL_COLOUR  border_colour;
  //Tint        active_status;

  OPENGL_ZCLIP   myZClip;
  OPENGL_EXTRA_REP myExtra;
  //}

  Graphic3d_SequenceOfHClipPlane myClipPlanes;
  
  OPENGL_FOG myFog;
  OpenGl_Trihedron*          myTrihedron;
  OpenGl_GraduatedTrihedron* myGraduatedTrihedron;

  //View_LABViewContext
  int myVisualization;
  int myIntShadingMethod;

  //View_LABLight
  OpenGl_ListOfLight myLights;

  //View_LABPlane
  //View_LABAliasing
  Standard_Boolean myAntiAliasing;

  //View_LABDepthCueing - fixed index used

  OpenGl_LayerList myZLayers;

  const TEL_TRANSFORM_PERSISTENCE *myTransPers;
  Standard_Boolean myIsTransPers;

  OpenGl_StateCounter* myStateCounter;

  Standard_Size myCurrOrientationState; // <-- delete it after merge with new camera
  Standard_Size myCurrViewMappingState; // <-- delete it after merge with new camera
  Standard_Size myCurrLightSourceState;

  typedef std::pair<Standard_Size, Standard_Size> StateInfo;

  StateInfo myLastOrientationState;
  StateInfo myLastViewMappingState;
  StateInfo myLastLightSourceState;

#ifdef HAVE_OPENCL
  Standard_Size myModificationState;
#endif

 public:
  DEFINE_STANDARD_ALLOC
};

#endif //_OpenGl_View_Header
liboce-visualization-dev 0.15-4 / usr / include / oce / OpenGl_View.hxx
