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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 | // $Id$ |
63ed9c6b | 17 | // $MpId: AliMpGraphContext.cxx,v 1.9 2006/03/02 16:37:24 ivana Exp $ |
5f91c9e8 | 18 | // Category: graphics |
19 | // | |
20 | // Class AliMpGraphContext | |
21 | // ----------------------- | |
22 | // Class describing a the correspondance between a given area | |
23 | // in pad, and a zone of real (cm) position | |
dbe945cc | 24 | // Included in AliRoot: 2003/05/02 |
5f91c9e8 | 25 | // Author: David GUEZ, IPN Orsay |
26 | ||
27 | #include "AliMpGraphContext.h" | |
28 | ||
63ed9c6b | 29 | #include <TError.h> |
5f91c9e8 | 30 | |
31 | AliMpGraphContext *AliMpGraphContext::fgInstance = 0; | |
5006ec94 | 32 | AliMpGraphContext::GraphContextVector AliMpGraphContext::fgStack; |
f79c58a5 | 33 | #ifdef WITH_ROOT |
34 | Int_t AliMpGraphContext::fgStackSize = 0; | |
35 | #endif | |
5f91c9e8 | 36 | |
63ed9c6b | 37 | ClassImp(AliMpGraphContext) |
38 | ||
fb1bf5c0 | 39 | //_____________________________________________________________________________ |
5f91c9e8 | 40 | AliMpGraphContext::AliMpGraphContext(): |
41 | TObject(), | |
42 | fPadPosition(TVector2(0.5,0.5)), | |
43 | fPadDimensions(TVector2(0.49,0.49)), | |
44 | fRealPosition(TVector2(0.,0.)), | |
45 | fRealDimensions(TVector2(1,1)) | |
46 | { | |
dee1d5f1 | 47 | /// Private constructor |
fb1bf5c0 | 48 | |
5f91c9e8 | 49 | fColor = 20; |
50 | // default constructor (private) | |
51 | } | |
fb1bf5c0 | 52 | |
53 | //_____________________________________________________________________________ | |
54 | AliMpGraphContext::AliMpGraphContext(const AliMpGraphContext& right) | |
bcf37928 | 55 | : TObject(right), |
56 | fColor(right.fColor), | |
57 | fPadPosition(right.fPadPosition), | |
58 | fPadDimensions(right.fPadDimensions), | |
59 | fRealPosition(right.fRealPosition), | |
60 | fRealDimensions(right.fRealDimensions) | |
fb1bf5c0 | 61 | { |
dee1d5f1 | 62 | /// Copy constructor |
fb1bf5c0 | 63 | } |
64 | ||
65 | //_____________________________________________________________________________ | |
66 | AliMpGraphContext& | |
67 | AliMpGraphContext::operator=(const AliMpGraphContext& right) | |
68 | { | |
dee1d5f1 | 69 | /// Protected assignment operator |
fb1bf5c0 | 70 | |
dee1d5f1 | 71 | // check assignment to self |
fb1bf5c0 | 72 | if (this == &right) return *this; |
73 | ||
bcf37928 | 74 | fColor = right.fColor; |
75 | fPadPosition = right.fPadPosition; | |
76 | fPadDimensions = right.fPadDimensions; | |
77 | fRealPosition = right.fRealPosition; | |
78 | fRealDimensions = right.fRealDimensions; | |
fb1bf5c0 | 79 | |
80 | return *this; | |
81 | } | |
82 | ||
83 | //_____________________________________________________________________________ | |
5f91c9e8 | 84 | AliMpGraphContext *AliMpGraphContext::Instance() |
85 | { | |
dee1d5f1 | 86 | /// Return or create a unique instance of this class |
87 | ||
5f91c9e8 | 88 | if (fgInstance) return fgInstance; |
89 | fgInstance = new AliMpGraphContext; | |
90 | return fgInstance; | |
91 | } | |
92 | ||
fb1bf5c0 | 93 | //_____________________________________________________________________________ |
5f91c9e8 | 94 | TVector2 AliMpGraphContext::RealToPad(const TVector2 &position) const |
95 | { | |
dee1d5f1 | 96 | /// Transform a real position into its equivalent position in the pad |
97 | ||
5f91c9e8 | 98 | Double_t x=position.X(); |
99 | Double_t y=position.Y(); | |
100 | x-= (fRealPosition.X()-fRealDimensions.X()); | |
101 | x/=fRealDimensions.X(); | |
102 | x*=fPadDimensions.X(); | |
103 | x+= (fPadPosition.X()-fPadDimensions.X() ); | |
104 | ||
105 | y-= (fRealPosition.Y()-fRealDimensions.Y()); | |
106 | y/=fRealDimensions.Y(); | |
107 | y*=fPadDimensions.Y(); | |
108 | y+= (fPadPosition.Y()-fPadDimensions.Y() ); | |
109 | ||
110 | return TVector2(x,y); | |
111 | } | |
112 | ||
fb1bf5c0 | 113 | //_____________________________________________________________________________ |
5f91c9e8 | 114 | void AliMpGraphContext::RealToPad(const TVector2 &position, |
115 | const TVector2 &dimensions, | |
116 | TVector2 &padPosition, | |
117 | TVector2 &padDimensions) const | |
118 | { | |
dee1d5f1 | 119 | // Transform the real area (position,dimensions) to |
5f91c9e8 | 120 | // its equivalent pad area |
dee1d5f1 | 121 | |
5f91c9e8 | 122 | padPosition = RealToPad(position); |
123 | padDimensions = | |
124 | TVector2(dimensions.X()*fPadDimensions.X()/fRealDimensions.X(), | |
125 | dimensions.Y()*fPadDimensions.Y()/fRealDimensions.Y()); | |
126 | ||
127 | } | |
fb1bf5c0 | 128 | |
129 | //_____________________________________________________________________________ | |
5f91c9e8 | 130 | void AliMpGraphContext::SetPadPosForReal(const TVector2 &position, |
131 | const TVector2 &dimensions) | |
132 | { | |
dee1d5f1 | 133 | /// Set the pad area from the actual one |
134 | /// corresponding to the given real area. | |
135 | ||
5f91c9e8 | 136 | RealToPad(position,dimensions,fPadPosition,fPadDimensions); |
137 | } | |
fb1bf5c0 | 138 | |
139 | //_____________________________________________________________________________ | |
5f91c9e8 | 140 | void AliMpGraphContext::Push() const |
141 | { | |
dee1d5f1 | 142 | /// Store the current configuration |
143 | ||
5f91c9e8 | 144 | AliMpGraphContext *save = new AliMpGraphContext(*this); |
f79c58a5 | 145 | |
146 | #ifdef WITH_STL | |
5f91c9e8 | 147 | fgStack.push_back(save); |
f79c58a5 | 148 | #endif |
149 | ||
150 | #ifdef WITH_ROOT | |
151 | fgStack.AddAt(save, fgStackSize++); | |
152 | #endif | |
5f91c9e8 | 153 | } |
fb1bf5c0 | 154 | |
155 | //_____________________________________________________________________________ | |
5f91c9e8 | 156 | void AliMpGraphContext::Pop() |
157 | { | |
dee1d5f1 | 158 | /// Pop an object from the stack. |
159 | ||
f79c58a5 | 160 | #ifdef WITH_STL |
5f91c9e8 | 161 | // restore the last saved configuration |
162 | if (!fgStack.empty()){ | |
163 | AliMpGraphContext *obj = fgStack.back(); | |
164 | *this = *obj; | |
165 | fgStack.pop_back(); | |
166 | delete obj; | |
167 | } | |
f79c58a5 | 168 | #endif |
169 | ||
170 | #ifdef WITH_ROOT | |
171 | // restore the last saved configuration | |
172 | if ( fgStackSize ){ | |
173 | AliMpGraphContext *obj | |
174 | = (AliMpGraphContext*)fgStack.At(--fgStackSize); | |
175 | *this = *obj; | |
176 | fgStack.RemoveAt(fgStackSize); | |
177 | delete obj; | |
178 | } | |
179 | #endif | |
5f91c9e8 | 180 | } |