/usr/include/root/TGLRotateManip.h is in libroot-graf3d-gl-dev 5.34.30-0ubuntu8.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 | // @(#)root/gl:$Id$
// Author:  Richard Maunder  04/10/2005
/*************************************************************************
 * Copyright (C) 1995-2005, 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_TGLRotateManip
#define ROOT_TGLRotateManip
#ifndef ROOT_TGLManip
#include "TGLManip.h"
#endif
class TGLRotateManip : public TGLManip
{
private:
   // Active ring interaction - set on mouse down
   // Shallow ring interaction
   // Where the ring plane forms a shallow angle to the eye direction -
   // a different interaction is required in these cases - see HandleMotion()
   Bool_t     fShallowRing;         //! does active ring form shallow angle to eye?
   Bool_t     fShallowFront;        //! front or back of the active shallow ring?
   TGLPlane   fActiveRingPlane;     //! plane of the active ring (widget)
   TGLVertex3 fActiveRingCenter;    //! center of active ring
   // TODO: Is ring center required - why not get from plane?
   // Normal interaction tracking (non-shallow)
   TGLLine3 fRingLine;
   TGLLine3 fRingLineOld;
   void DrawAxisRing(const TGLVertex3& origin, const TGLVector3& axis,
                     Double_t radius, Float_t rgba[4]) const;
   Double_t CalculateAngleDelta(const TPoint& mouse, const TGLCamera& camera);
   TGLLine3 CalculateRingLine(const TPoint& mouse, const TGLCamera& camera) const;
protected:
   static Double_t Angle(const TGLVector3& v1, const TGLVector3& v2);
   static Double_t Angle(const TGLVector3& v1, const TGLVector3& v2, const TGLVector3& ref);
public:
   TGLRotateManip();
   TGLRotateManip(TGLPhysicalShape* shape);
   virtual ~TGLRotateManip();
   virtual void   Draw(const TGLCamera& camera) const;
   virtual Bool_t HandleButton(const Event_t& event, const TGLCamera& camera);
   virtual Bool_t HandleMotion(const Event_t& event, const TGLCamera& camera);
   ClassDef(TGLRotateManip, 0); // GL rotation manipulator widget
};
#endif
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