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dee1d5f1 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
7 | * Permission to use, copy, modify and distribute this software and its * | |
8 | * documentation strictly for non-commercial purposes is hereby granted * | |
9 | * without fee, provided that the above copyright notice appears in all * | |
10 | * copies and that both the copyright notice and this permission notice * | |
11 | * appear in the supporting documentation. The authors make no claims * | |
12 | * about the suitability of this software for any purpose. It is * | |
13 | * provided "as is" without express or implied warranty. * | |
14 | **************************************************************************/ | |
15 | ||
5f91c9e8 | 16 | // $Id$ |
13985652 | 17 | // $MpId: AliMpGraphContext.cxx,v 1.11 2006/05/24 13:58:32 ivana Exp $ |
5f91c9e8 | 18 | // Category: graphics |
3d1463c8 | 19 | |
20 | //----------------------------------------------------------------------------- | |
5f91c9e8 | 21 | // Class AliMpGraphContext |
22 | // ----------------------- | |
23 | // Class describing a the correspondance between a given area | |
24 | // in pad, and a zone of real (cm) position | |
dbe945cc | 25 | // Included in AliRoot: 2003/05/02 |
5f91c9e8 | 26 | // Author: David GUEZ, IPN Orsay |
3d1463c8 | 27 | //----------------------------------------------------------------------------- |
5f91c9e8 | 28 | |
29 | #include "AliMpGraphContext.h" | |
30 | ||
13985652 | 31 | /// \cond CLASSIMP |
32 | ClassImp(AliMpGraphContext) | |
33 | /// \endcond | |
34 | ||
2294822d | 35 | AliMpGraphContext* AliMpGraphContext::fgInstance = 0; |
36 | TObjArray AliMpGraphContext::fgStack; | |
f79c58a5 | 37 | Int_t AliMpGraphContext::fgStackSize = 0; |
5f91c9e8 | 38 | |
fb1bf5c0 | 39 | //_____________________________________________________________________________ |
5f91c9e8 | 40 | AliMpGraphContext::AliMpGraphContext(): |
41 | TObject(), | |
0471c97b | 42 | fColor(20), |
5f91c9e8 | 43 | fPadPosition(TVector2(0.5,0.5)), |
44 | fPadDimensions(TVector2(0.49,0.49)), | |
45 | fRealPosition(TVector2(0.,0.)), | |
46 | fRealDimensions(TVector2(1,1)) | |
47 | { | |
0471c97b | 48 | /// Default constructor (private) |
5f91c9e8 | 49 | } |
fb1bf5c0 | 50 | |
51 | //_____________________________________________________________________________ | |
52 | AliMpGraphContext::AliMpGraphContext(const AliMpGraphContext& right) | |
bcf37928 | 53 | : TObject(right), |
54 | fColor(right.fColor), | |
55 | fPadPosition(right.fPadPosition), | |
56 | fPadDimensions(right.fPadDimensions), | |
57 | fRealPosition(right.fRealPosition), | |
58 | fRealDimensions(right.fRealDimensions) | |
fb1bf5c0 | 59 | { |
dee1d5f1 | 60 | /// Copy constructor |
fb1bf5c0 | 61 | } |
62 | ||
63 | //_____________________________________________________________________________ | |
64 | AliMpGraphContext& | |
65 | AliMpGraphContext::operator=(const AliMpGraphContext& right) | |
66 | { | |
dee1d5f1 | 67 | /// Protected assignment operator |
fb1bf5c0 | 68 | |
dee1d5f1 | 69 | // check assignment to self |
fb1bf5c0 | 70 | if (this == &right) return *this; |
71 | ||
bcf37928 | 72 | fColor = right.fColor; |
73 | fPadPosition = right.fPadPosition; | |
74 | fPadDimensions = right.fPadDimensions; | |
75 | fRealPosition = right.fRealPosition; | |
76 | fRealDimensions = right.fRealDimensions; | |
fb1bf5c0 | 77 | |
78 | return *this; | |
79 | } | |
80 | ||
81 | //_____________________________________________________________________________ | |
5f91c9e8 | 82 | AliMpGraphContext *AliMpGraphContext::Instance() |
83 | { | |
dee1d5f1 | 84 | /// Return or create a unique instance of this class |
85 | ||
5f91c9e8 | 86 | if (fgInstance) return fgInstance; |
87 | fgInstance = new AliMpGraphContext; | |
88 | return fgInstance; | |
89 | } | |
90 | ||
fb1bf5c0 | 91 | //_____________________________________________________________________________ |
5f91c9e8 | 92 | TVector2 AliMpGraphContext::RealToPad(const TVector2 &position) const |
93 | { | |
dee1d5f1 | 94 | /// Transform a real position into its equivalent position in the pad |
95 | ||
5f91c9e8 | 96 | Double_t x=position.X(); |
97 | Double_t y=position.Y(); | |
98 | x-= (fRealPosition.X()-fRealDimensions.X()); | |
99 | x/=fRealDimensions.X(); | |
100 | x*=fPadDimensions.X(); | |
101 | x+= (fPadPosition.X()-fPadDimensions.X() ); | |
102 | ||
103 | y-= (fRealPosition.Y()-fRealDimensions.Y()); | |
104 | y/=fRealDimensions.Y(); | |
105 | y*=fPadDimensions.Y(); | |
106 | y+= (fPadPosition.Y()-fPadDimensions.Y() ); | |
107 | ||
108 | return TVector2(x,y); | |
109 | } | |
110 | ||
fb1bf5c0 | 111 | //_____________________________________________________________________________ |
5f91c9e8 | 112 | void AliMpGraphContext::RealToPad(const TVector2 &position, |
113 | const TVector2 &dimensions, | |
114 | TVector2 &padPosition, | |
115 | TVector2 &padDimensions) const | |
116 | { | |
f5671fc3 | 117 | /// Transform the real area (position,dimensions) to |
118 | /// its equivalent pad area | |
dee1d5f1 | 119 | |
5f91c9e8 | 120 | padPosition = RealToPad(position); |
121 | padDimensions = | |
122 | TVector2(dimensions.X()*fPadDimensions.X()/fRealDimensions.X(), | |
123 | dimensions.Y()*fPadDimensions.Y()/fRealDimensions.Y()); | |
124 | ||
125 | } | |
fb1bf5c0 | 126 | |
127 | //_____________________________________________________________________________ | |
5f91c9e8 | 128 | void AliMpGraphContext::SetPadPosForReal(const TVector2 &position, |
129 | const TVector2 &dimensions) | |
130 | { | |
dee1d5f1 | 131 | /// Set the pad area from the actual one |
132 | /// corresponding to the given real area. | |
133 | ||
5f91c9e8 | 134 | RealToPad(position,dimensions,fPadPosition,fPadDimensions); |
135 | } | |
fb1bf5c0 | 136 | |
137 | //_____________________________________________________________________________ | |
5f91c9e8 | 138 | void AliMpGraphContext::Push() const |
139 | { | |
dee1d5f1 | 140 | /// Store the current configuration |
141 | ||
5f91c9e8 | 142 | AliMpGraphContext *save = new AliMpGraphContext(*this); |
f79c58a5 | 143 | |
f79c58a5 | 144 | fgStack.AddAt(save, fgStackSize++); |
5f91c9e8 | 145 | } |
fb1bf5c0 | 146 | |
147 | //_____________________________________________________________________________ | |
5f91c9e8 | 148 | void AliMpGraphContext::Pop() |
149 | { | |
dee1d5f1 | 150 | /// Pop an object from the stack. |
151 | ||
f79c58a5 | 152 | // restore the last saved configuration |
153 | if ( fgStackSize ){ | |
154 | AliMpGraphContext *obj | |
155 | = (AliMpGraphContext*)fgStack.At(--fgStackSize); | |
156 | *this = *obj; | |
157 | fgStack.RemoveAt(fgStackSize); | |
158 | delete obj; | |
159 | } | |
5f91c9e8 | 160 | } |