// OCCDemo_Presentation.h: interface for the OCCDemo_Presentation class.
// This is a base class for all presentations
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_OCCDEMO_PRESENTATION_H__790EED7F_7BA2_11D5_BA4A_0060B0EE18EA__INCLUDED_)
#define AFX_OCCDEMO_PRESENTATION_H__790EED7F_7BA2_11D5_BA4A_0060B0EE18EA__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000


#define WAIT_A_LITTLE WaitForInput(500)
#define WAIT_A_SECOND WaitForInput(1000)

#include <OCCDemoDoc.h>
class AIS_InteractiveObject;
class Geom_Surface;
class Geom_Curve;
class Geom2d_Curve;
class Quantity_Color;

class OCCDemo_Presentation
{
public:
  // Construction
  OCCDemo_Presentation() : myIndex(0), myNbSamples(0), FitMode(false){}
  virtual ~OCCDemo_Presentation() {}

public:
  static OCCDemo_Presentation* Current;
  // this pointer must be initialized when realize a derivable class;
  // it is used by application to access to a presentation class instance

  void SetDocument (COCCDemoDoc* theDoc) {myDoc = theDoc;}
  // document must be set by the user of this class before first use of iterations

public:
  // Titling
  const CString& GetName() const {return myName;}

public:
  // Iteration on samples
  void FirstSample() {myIndex=0;}
  void LastSample() {myIndex=myNbSamples-1;}
  Standard_Boolean AtFirstSample() const {return myIndex <= 0;}
  Standard_Boolean AtLastSample() const {return myIndex >= myNbSamples-1;}
  void NextSample() {myIndex++;}
  void PrevSample() {myIndex--;}
  virtual void DoSample() = 0;
  static void GetViewCenter(Standard_Real& Xc, Standard_Real& Yc);
  static void SetViewCenter(const Standard_Real Xc, const Standard_Real Yc);
  static void GetViewEye(Standard_Real& X, Standard_Real& Y, Standard_Real& Z);
  static void SetViewEye(Standard_Real X, Standard_Real Y, Standard_Real Z);
  static Standard_Real GetViewScale();
  static void SetViewScale(Standard_Real Coef);
  static void ResetView();


  // place one-time initialization code in this function
  virtual void Init() {}

protected:
  // Methods to call from a derivable class
  void setName (const char* theName) {myName = CString(theName);}
  Handle(AIS_InteractiveContext) getAISContext() const {return myDoc->GetAISContext();}
  Handle(V3d_Viewer) getViewer() const {return myDoc->GetViewer();}
  void setResultTitle (const char* theTitle) {myDoc->GetResultDialog()->SetTitle(theTitle);}
  void setResultText (const char* theText) {myDoc->GetResultDialog()->SetText(theText);}
  Standard_CString GetDataDir() {return myDoc->GetDataDir();}

  Standard_Boolean WaitForInput (unsigned long aMilliSeconds);
  // Waits for a user input or a period of time has been elapsed

  Handle(AIS_InteractiveObject) drawSurface (const Handle(Geom_Surface)& theSurface,
         const Quantity_Color& theColor = Quantity_Color(Quantity_NOC_LEMONCHIFFON3),
         const Standard_Boolean toDisplay = Standard_True);
  // creates a finite face based on the given geometric surface 
  // and displays it in the viewer if toDisplay = Standard_True

  Handle(AIS_InteractiveObject) drawCurve (const Handle(Geom_Curve)& theCurve,
         const Quantity_Color& theColor = Quantity_Color(Quantity_NOC_RED),
         const Standard_Boolean toDisplay = Standard_True);
  // creates an ISession_Curve based on the given geometric curve
  // and displays it in the viewer if toDisplay = Standard_True

  Handle(AIS_InteractiveObject) drawCurve (const Handle(Geom2d_Curve)& theCurve,
         const Quantity_Color& theColor = Quantity_Color(Quantity_NOC_RED),
         const Standard_Boolean toDisplay = Standard_True,
         const gp_Ax2& aPosition = gp::XOY());
  // converts a given curve to 3d using aPosition and calls the previous method

  Handle(AIS_Point) drawPoint (const gp_Pnt& thePnt,
         const Quantity_Color& theColor = Quantity_Color(Quantity_NOC_GREEN),
         const Standard_Boolean toDisplay = Standard_True);
  // creates a presentation of the given point
  // and displays it in the viewer if toDisplay = Standard_True

  Handle(AIS_InteractiveObject) drawVector (const gp_Pnt& thePnt,
                                           const gp_Vec& theVec,
         const Quantity_Color& theColor = Quantity_Color(Quantity_NOC_YELLOW),
         const Standard_Boolean toDisplay = Standard_True);
  // creates a presentation of the given vector
  // and displays it in the viewer if toDisplay = Standard_True

  Handle(AIS_Shape) drawShape (const TopoDS_Shape& theShape,
         const Quantity_Color& theColor,
         const Standard_Boolean toDisplay = Standard_True);
  // creates a presentation of the given shape
  // with material PLASTIC and a given color
  // and displays it in the viewer if toDisplay = Standard_True

  Handle(AIS_Shape) drawShape (const TopoDS_Shape& theShape,
         const Graphic3d_NameOfMaterial theMaterial = Graphic3d_NOM_BRASS,
         const Standard_Boolean toDisplay = Standard_True);
  // creates a presentation of the given shape with the given material
  // (color is default for a given material)
  // and displays it in the viewer if toDisplay = Standard_True

protected:
  // Fields to use in a derivable class
  BOOL FitMode;
  int myIndex;
  int myNbSamples;

private:
  COCCDemoDoc* myDoc;
  CString myName;

};

#endif // !defined(AFX_OCCDEMO_PRESENTATION_H__790EED7F_7BA2_11D5_BA4A_0060B0EE18EA__INCLUDED_)