1 // @(#)root/g3d:$Id$
2 // Author: Rene Brun 14/09/95
3
4 /*************************************************************************
5 * Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
6 * All rights reserved. *
7 * *
8 * For the licensing terms see $ROOTSYS/LICENSE. *
9 * For the list of contributors see $ROOTSYS/README/CREDITS. *
10 *************************************************************************/
11
12 #ifndef ROOT_TRotMatrix
13 #define ROOT_TRotMatrix
14
15
16 //////////////////////////////////////////////////////////////////////////
17 // //
18 // TRotMatrix //
19 // //
20 // Rotation Matrix for 3-D geometry objects. //
21 // //
22 // //
23 //////////////////////////////////////////////////////////////////////////
24
25 #ifndef ROOT_TNamed
26 #include "TNamed.h"
27 #endif
28
29
30 class TRotMatrix : public TNamed {
31 private:
32 virtual void SetReflection(); // Set the "reflection" flag if det < 0
33
34 protected:
35 Int_t fNumber; //Rotation matrix number
36 Int_t fType; //Type of matrix (0=identity, 1=reflexion, 2=otherwise)
37 Double_t fTheta; //theta angle
38 Double_t fPhi; //phi angle
39 Double_t fPsi; //psi angle
40 Double_t fMatrix[9]; //Rotation matrix
41
42 public:
43 //TRotMatrix status bits
44 enum {
45 kReflection = BIT(23) // "Reflection" bit
46 };
47
48 TRotMatrix();
49 TRotMatrix(const char *name, const char *title, Double_t *matrix);
50 TRotMatrix(const char *name, const char *title, Double_t theta, Double_t phi, Double_t psi);
51 TRotMatrix(const char *name, const char *title, Double_t theta1, Double_t phi1,
52 Double_t theta2, Double_t phi2,
53 Double_t theta3, Double_t phi3);
54 virtual ~TRotMatrix();
55 virtual Double_t Determinant() const ; // returns the determinant of this matrix
56 virtual Double_t* GetMatrix() {return &fMatrix[0];}
57 virtual Int_t GetNumber() const {return fNumber;}
58 virtual Int_t GetType() const {return fType;}
59 virtual Double_t GetTheta() const {return fTheta;}
60 virtual Double_t GetPhi() const {return fPhi;}
61 virtual Double_t GetPsi() const {return fPsi;}
62 virtual Double_t* GetGLMatrix(Double_t *rGLMatrix) const ; // Convert this matrix to the OpenGL [4x4]
63 virtual Bool_t IsReflection() const {return TestBit(kReflection);} // Return kTRUE if this matrix defines the reflection
64 virtual const Double_t* SetAngles(Double_t theta1, Double_t phi1,Double_t theta2, Double_t phi2, Double_t theta3, Double_t phi3);
65 virtual void SetMatrix(const Double_t *matrix);
66 virtual void SetName(const char *name);
67
68 ClassDef(TRotMatrix,2) //Rotation Matrix for 3-D geometry objects
69 };
70
71 inline void TRotMatrix::SetName(const char *) { }
72
73 #endif
74