// @(#)root/base:$Name:  $:$Id: TBuffer3D.h,v 1.00 
// Author: Olivier Couet   05/05/04

/*************************************************************************
 * Copyright (C) 1995-2004, 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_TBuffer3D
#define ROOT_TBuffer3D

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TBuffer3D                                                            //
//                                                                      //
// Generic 3D primitive description class - see TBuffer3DTypes for      //
// producer classes                                                     //
//////////////////////////////////////////////////////////////////////////

#ifndef ROOT_TObject
#include "TObject.h"
#endif

class TBuffer3D : public TObject
{
private:
   const Int_t fType;        // Primitive type - predefined ones in TBuffer3DTypes.h

   UInt_t    fNbPnts;        // Number of points describing the shape
   UInt_t    fNbSegs;        // Number of segments describing the shape
   UInt_t    fNbPols;        // Number of polygons describing the shape

   UInt_t    fPntsCapacity;  // Current capacity of fPnts space
   UInt_t    fSegsCapacity;  // Current capacity of fSegs space
   UInt_t    fPolsCapacity;  // Current capacity of fSegs space

   UInt_t    fSections;      // Section validity flags

   void Init();

   // Non-copyable class
   TBuffer3D(const TBuffer3D &);
   const TBuffer3D & operator=(const TBuffer3D &);

   //CS specific
   static UInt_t fgCSLevel;
   ///////////////////////////////
public:
   //CS specific
   enum EBoolOpCode {kCSUnion, kCSIntersection, kCSDifference, kCSNoOp};

   static UInt_t GetCSLevel();
   static void IncCSLevel();
   static UInt_t DecCSLevel();
   ///////////////////////////////

   enum ESection { kNone            = BIT(0),
                   kCore            = BIT(1),
                   kBoundingBox     = BIT(2),
                   kShapeSpecific   = BIT(3),
                   kRawSizes        = BIT(4),
                   kRaw             = BIT(5),
                   kAll             = kCore|kBoundingBox|kShapeSpecific|kRawSizes|kRaw
   };

   TBuffer3D(Int_t type,
             UInt_t reqPnts = 0, UInt_t reqPntsCapacity = 0,
             UInt_t reqSegs = 0, UInt_t reqSegsCapacity = 0,
             UInt_t reqPols = 0, UInt_t reqPolsCapacity = 0);
   virtual  ~TBuffer3D();

   // Section validity flags
   void   SetSectionsValid(UInt_t mask)     { fSections |= mask & kAll; }
   void   ClearSectionsValid();
   Bool_t SectionsValid(UInt_t mask) const   { return (Bool_t) (GetSections(mask) == mask); }
   UInt_t GetSections(UInt_t mask)   const   { return (UInt_t) (fSections & mask); }

   // Convenience functions
   void   SetLocalMasterIdentity();                  // Set fLocalMaster in kCore to identity
   void   SetAABoundingBox(const Double_t origin[3], // Set fBBVertex in kBoundingBox to axis aligned BB
                           const Double_t halfLengths[3]);

   // SECTION: kRawSize get/set
   Bool_t SetRawSizes(UInt_t reqPnts, UInt_t reqPntsCapacity,
                      UInt_t reqSegs, UInt_t reqSegsCapacity,
                      UInt_t reqPols, UInt_t reqPolsCapacity);

   UInt_t NbPnts() const { return fNbPnts; }
   UInt_t NbSegs() const { return fNbSegs; }
   UInt_t NbPols() const { return fNbPols; }

   // SECTION: kCore
   Int_t  Type() const { return fType; }

   TObject    *fID;              // ID/object generating buffer - see TVirtualViewer3D for setting
   Int_t       fColor;           // Color index
   Short_t     fTransparency;    // Percentage transparency [0,100]
   Bool_t      fLocalFrame;      // True = Local, False = Master reference frame
   Bool_t      fReflection;      // Matrix is reflection - TODO: REMOVE when OGL viewer rewokred to local frame
   Double_t    fLocalMaster[16]; // Local->Master Matrix - identity if master frame

   // SECTION: kBoundingBox
   //
   // Local frame (fLocalFrame true) axis aligned
   // Master frame (fLocalFrame false) orientated
   // Could be more compact (2 and 3 verticies respectively) and rest
   // calculated as needed - but not worth it
   //   7-------6
   //  /|      /|
   // 3-------2 |
   // | 4-----|-5
   // |/      |/
   // 0-------1 
   //
   Double_t    fBBVertex[8][3];  // 8 verticies defining bounding box. 

   // SECTION: kShapeSpecific - none for base class

   // SECTION: kRaw
   Double_t *fPnts;              // x0, y0, z0, x1, y1, z1, ..... ..... ....
   Int_t    *fSegs;              // c0, p0, q0, c1, p1, q1, ..... ..... ....  
   Int_t    *fPols;              // c0, n0, s0, s1, ... sn, c1, n1, s0, ... sn

   ClassDef(TBuffer3D,0)     // 3D primitives description
};

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TBuffer3DSphere                                                      //
//                                                                      //
// Sphere description class - see TBuffer3DTypes for producer classes   //
// Supports hollow and cut spheres.                                     //
//////////////////////////////////////////////////////////////////////////

class TBuffer3DSphere : public TBuffer3D
{
private:
   // Non-copyable class
   TBuffer3DSphere(const TBuffer3DSphere &);
   const TBuffer3DSphere & operator=(const TBuffer3DSphere &);

public:
   TBuffer3DSphere(UInt_t reqPnts = 0, UInt_t reqPntsCapacity = 0,
                   UInt_t reqSegs = 0, UInt_t reqSegsCapacity = 0,
                   UInt_t reqPols = 0, UInt_t reqPolsCapacity = 0);

   Bool_t IsSolidUncut() const;

   // SECTION: kShapeSpecific
   Double_t fRadiusInner;
   Double_t fRadiusOuter;
   Double_t fThetaMin;     // Lower theta limit (orientation?)
   Double_t fThetaMax;     // Higher theta limit (orientation?)
   Double_t fPhiMin;       // Lower phi limit (orientation?)
   Double_t fPhiMax;       // Higher phi limit (orientation?)
};

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TBuffer3DTube                                                        //
//                                                                      //
// Complete tube description class - see TBuffer3DTypes for producer    // 
// classes                                                              //
//////////////////////////////////////////////////////////////////////////

class TBuffer3DTube : public TBuffer3D
{
private:
   // Non-copyable class
   TBuffer3DTube(const TBuffer3DTube &);
   const TBuffer3DTube & operator=(const TBuffer3DTube &);

protected:
   TBuffer3DTube(Int_t type,
                 UInt_t reqPnts = 0, UInt_t reqPntsCapacity = 0,
                 UInt_t reqSegs = 0, UInt_t reqSegsCapacity = 0,
                 UInt_t reqPols = 0, UInt_t reqPolsCapacity = 0);

public:
   TBuffer3DTube(UInt_t reqPnts = 0, UInt_t reqPntsCapacity = 0,
                 UInt_t reqSegs = 0, UInt_t reqSegsCapacity = 0,
                 UInt_t reqPols = 0, UInt_t reqPolsCapacity = 0);

   // SECTION: kShapeSpecific
   Double_t fRadiusInner;  // Inner radius
   Double_t fRadiusOuter;  // Outer radius
   Double_t fHalfLength;   // Half length (dz)           
};

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TBuffer3DTubeSeg                                                     //
//                                                                      //
// Tube segment description class - see TBuffer3DTypes for producer     //
// classes                                                              //
//////////////////////////////////////////////////////////////////////////

class TBuffer3DTubeSeg : public TBuffer3DTube
{
private:
   // Non-copyable class
   TBuffer3DTubeSeg(const TBuffer3DTubeSeg &);
   const TBuffer3DTubeSeg & operator=(const TBuffer3DTubeSeg &);

protected:
   TBuffer3DTubeSeg(Int_t type,
                    UInt_t reqPnts = 0, UInt_t reqPntsCapacity = 0,
                    UInt_t reqSegs = 0, UInt_t reqSegsCapacity = 0,
                    UInt_t reqPols = 0, UInt_t reqPolsCapacity = 0);

public:
   TBuffer3DTubeSeg(UInt_t reqPnts = 0, UInt_t reqPntsCapacity = 0,
                    UInt_t reqSegs = 0, UInt_t reqSegsCapacity = 0,
                    UInt_t reqPols = 0, UInt_t reqPolsCapacity = 0);

   // SECTION: kShapeSpecific
   Double_t fPhiMin;       // Lower phi limit
   Double_t fPhiMax;       // Higher phi limit
};

//////////////////////////////////////////////////////////////////////////
//                                                                      //
// TBuffer3DCutTube                                                     //
//                                                                      //
// Cut tube segment description class - see TBuffer3DTypes for producer //
// classes                                                              //
//////////////////////////////////////////////////////////////////////////

class TBuffer3DCutTube : public TBuffer3DTubeSeg
{
private:
   // Non-copyable class
   TBuffer3DCutTube(const TBuffer3DTubeSeg &);
   const TBuffer3DCutTube & operator=(const TBuffer3DTubeSeg &);

public:
   TBuffer3DCutTube(UInt_t reqPnts = 0, UInt_t reqPntsCapacity = 0,
                    UInt_t reqSegs = 0, UInt_t reqSegsCapacity = 0,
                    UInt_t reqPols = 0, UInt_t reqPolsCapacity = 0);

   // SECTION: kShapeSpecific
   Double_t fLowPlaneNorm[3];  // Normal to lower cut plane 
   Double_t fHighPlaneNorm[3]; // Normal to highet cut plane 
};

#endif