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7984e5f7 | 1 | // |
2 | // Utilities used in the forward multiplcity analysis | |
3 | // | |
4 | // | |
5 | #ifndef ALIFORWARDUTIL_H | |
6 | #define ALIFORWARDUTIL_H | |
ffca499d | 7 | /** |
8 | * @file AliForwardUtil.h | |
9 | * @author Christian Holm Christensen <cholm@dalsgaard.hehi.nbi.dk> | |
10 | * @date Wed Mar 23 14:06:54 2011 | |
11 | * | |
12 | * @brief | |
13 | * | |
14 | * | |
bd6f5206 | 15 | * @ingroup pwglf_forward |
ffca499d | 16 | */ |
7e4038b5 | 17 | #include <TObject.h> |
9d99b0dd | 18 | #include <TString.h> |
7f759bb7 | 19 | #include <TObjArray.h> |
7e4038b5 | 20 | class TH2D; |
9d99b0dd | 21 | class TH1I; |
22 | class TH1; | |
7f759bb7 | 23 | class TF1; |
7e4038b5 | 24 | class TAxis; |
9d99b0dd | 25 | class AliESDEvent; |
7e4038b5 | 26 | |
27 | /** | |
28 | * Utilities used in the forward multiplcity analysis | |
29 | * | |
bd6f5206 | 30 | * @ingroup pwglf_forward |
7e4038b5 | 31 | */ |
32 | class AliForwardUtil : public TObject | |
33 | { | |
9d99b0dd | 34 | public: |
ffca499d | 35 | /** |
36 | * Get the standard color for a ring | |
37 | * | |
38 | * @param d Detector | |
39 | * @param r Ring | |
40 | * | |
41 | * @return | |
42 | */ | |
cc83fca2 | 43 | static Color_t RingColor(UShort_t d, Char_t r) |
44 | { | |
45 | return ((d == 1 ? kRed : (d == 2 ? kGreen : kBlue)) | |
5bb5d1f6 | 46 | + ((r == 'I' || r == 'i') ? 2 : -3)); |
cc83fca2 | 47 | } |
0bd4b00f | 48 | //================================================================== |
49 | /** | |
50 | * @{ | |
7c1a1f1d | 51 | * @name Collision/run parameters |
0bd4b00f | 52 | */ |
53 | /** | |
54 | * Defined collision types | |
55 | */ | |
56 | enum ECollisionSystem { | |
57 | kUnknown, | |
58 | kPP, | |
0151a6c6 | 59 | kPbPb, |
60 | kPPb | |
0bd4b00f | 61 | }; |
62 | //__________________________________________________________________ | |
63 | /** | |
64 | * Parse a collision system spec given in a string. Known values are | |
65 | * | |
66 | * - "pp", "p-p" which returns kPP | |
0151a6c6 | 67 | * - "PbPb", "Pb-Pb", "A-A", which returns kPbPb |
68 | * - "pPb", "p-Pb", "pA", p-A" which returns kPPb | |
0bd4b00f | 69 | * - Everything else gives kUnknown |
70 | * | |
71 | * @param sys Collision system spec | |
72 | * | |
73 | * @return Collision system id | |
74 | */ | |
75 | static UShort_t ParseCollisionSystem(const char* sys); | |
76 | /** | |
77 | * Get a string representation of the collision system | |
78 | * | |
79 | * @param sys Collision system | |
80 | * - kPP -> "pp" | |
81 | * - kPbPb -> "PbPb" | |
0151a6c6 | 82 | * - kPPb -> "pPb" |
0bd4b00f | 83 | * - anything else gives "unknown" |
84 | * | |
85 | * @return String representation of the collision system | |
86 | */ | |
87 | static const char* CollisionSystemString(UShort_t sys); | |
88 | //__________________________________________________________________ | |
89 | /** | |
90 | * Parse the center of mass energy given as a float and return known | |
91 | * values as a unsigned integer | |
92 | * | |
93 | * @param sys Collision system (needed for AA) | |
94 | * @param cms Center of mass energy * total charge | |
95 | * | |
96 | * @return Center of mass energy per nucleon | |
97 | */ | |
98 | static UShort_t ParseCenterOfMassEnergy(UShort_t sys, Float_t cms); | |
99 | /** | |
100 | * Get a string representation of the center of mass energy per nuclean | |
101 | * | |
7c1a1f1d | 102 | * @param cms Center of mass energy per nucleon |
0bd4b00f | 103 | * |
104 | * @return String representation of the center of mass energy per nuclean | |
105 | */ | |
106 | static const char* CenterOfMassEnergyString(UShort_t cms); | |
107 | //__________________________________________________________________ | |
108 | /** | |
109 | * Parse the magnetic field (in kG) as given by a floating point number | |
110 | * | |
111 | * @param field Magnetic field in kG | |
112 | * | |
113 | * @return Short integer value of magnetic field in kG | |
114 | */ | |
115 | static Short_t ParseMagneticField(Float_t field); | |
116 | /** | |
117 | * Get a string representation of the magnetic field | |
118 | * | |
119 | * @param field Magnetic field in kG | |
120 | * | |
121 | * @return String representation of the magnetic field | |
122 | */ | |
123 | static const char* MagneticFieldString(Short_t field); | |
124 | /* @} */ | |
125 | ||
126 | /** | |
127 | * @{ | |
128 | * @name Energy stragling functions | |
129 | */ | |
7f759bb7 | 130 | //__________________________________________________________________ |
131 | /** | |
132 | * Number of steps to do in the Landau, Gaussiam convolution | |
133 | */ | |
fb3430ac | 134 | static Int_t fgConvolutionSteps; // Number of convolution steps |
7f759bb7 | 135 | //------------------------------------------------------------------ |
136 | /** | |
137 | * How many sigma's of the Gaussian in the Landau, Gaussian | |
138 | * convolution to integrate over | |
139 | */ | |
fb3430ac | 140 | static Double_t fgConvolutionNSigma; // Number of convolution sigmas |
7f759bb7 | 141 | //------------------------------------------------------------------ |
142 | /** | |
143 | * Calculate the shifted Landau | |
144 | * @f[ | |
145 | * f'_{L}(x;\Delta,\xi) = f_L(x;\Delta+0.22278298\xi) | |
146 | * @f] | |
147 | * | |
148 | * where @f$ f_{L}@f$ is the ROOT implementation of the Landau | |
149 | * distribution (known to have @f$ \Delta_{p}=-0.22278298@f$ for | |
150 | * @f$\Delta=0,\xi=1@f$. | |
151 | * | |
152 | * @param x Where to evaluate @f$ f'_{L}@f$ | |
153 | * @param delta Most probable value | |
154 | * @param xi The 'width' of the distribution | |
155 | * | |
c389303e | 156 | * @return @f$ f'_{L}(x;\Delta,\xi) @f$ |
7f759bb7 | 157 | */ |
158 | static Double_t Landau(Double_t x, Double_t delta, Double_t xi); | |
159 | ||
160 | //------------------------------------------------------------------ | |
9d99b0dd | 161 | /** |
7f759bb7 | 162 | * Calculate the value of a Landau convolved with a Gaussian |
9d99b0dd | 163 | * |
7f759bb7 | 164 | * @f[ |
c389303e | 165 | * f(x;\Delta,\xi,\sigma') = \frac{1}{\sigma' \sqrt{2 \pi}} |
7f759bb7 | 166 | * \int_{-\infty}^{+\infty} d\Delta' f'_{L}(x;\Delta',\xi) |
c389303e | 167 | * \exp{-\frac{(\Delta-\Delta')^2}{2\sigma'^2}} |
7f759bb7 | 168 | * @f] |
9d99b0dd | 169 | * |
c389303e | 170 | * where @f$ f'_{L}@f$ is the Landau distribution, @f$ \Delta@f$ the |
171 | * energy loss, @f$ \xi@f$ the width of the Landau, and | |
172 | * @f$ \sigma'^2=\sigma^2-\sigma_n^2 @f$. Here, @f$\sigma@f$ is the | |
7f759bb7 | 173 | * variance of the Gaussian, and @f$\sigma_n@f$ is a parameter modelling |
174 | * noise in the detector. | |
175 | * | |
176 | * Note that this function uses the constants fgConvolutionSteps and | |
177 | * fgConvolutionNSigma | |
178 | * | |
179 | * References: | |
180 | * - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a> | |
181 | * - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a> | |
182 | * - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a> | |
183 | * | |
184 | * @param x where to evaluate @f$ f@f$ | |
185 | * @param delta @f$ \Delta@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$ | |
186 | * @param xi @f$ \xi@f$ of @f$ f(x;\Delta,\xi,\sigma')@f$ | |
c389303e | 187 | * @param sigma @f$ \sigma@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$ |
188 | * @param sigma_n @f$ \sigma_n@f$ of @f$\sigma'^2=\sigma^2-\sigma_n^2 @f$ | |
7f759bb7 | 189 | * |
190 | * @return @f$ f@f$ evaluated at @f$ x@f$. | |
9d99b0dd | 191 | */ |
7f759bb7 | 192 | static Double_t LandauGaus(Double_t x, Double_t delta, Double_t xi, |
193 | Double_t sigma, Double_t sigma_n); | |
0bd4b00f | 194 | |
195 | //------------------------------------------------------------------ | |
196 | /** | |
197 | * Evaluate | |
198 | * @f[ | |
199 | * f_i(x;\Delta,\xi,\sigma') = f(x;\Delta_i,\xi_i,\sigma_i') | |
200 | * @f] | |
201 | * corresponding to @f$ i@f$ particles i.e., with the substitutions | |
7c1a1f1d | 202 | * @f{eqnarray*}{ |
203 | * \Delta \rightarrow \Delta_i &=& i(\Delta + \xi\log(i))\\ | |
204 | * \xi \rightarrow \xi_i &=& i \xi\\ | |
205 | * \sigma \rightarrow \sigma_i &=& \sqrt{i}\sigma\\ | |
206 | * \sigma'^2 \rightarrow \sigma_i'^2 &=& \sigma_n^2 + \sigma_i^2 | |
207 | * @f} | |
0bd4b00f | 208 | * |
209 | * @param x Where to evaluate | |
210 | * @param delta @f$ \Delta@f$ | |
211 | * @param xi @f$ \xi@f$ | |
212 | * @param sigma @f$ \sigma@f$ | |
213 | * @param sigma_n @f$ \sigma_n@f$ | |
7c1a1f1d | 214 | * @param i @f$ i @f$ |
0bd4b00f | 215 | * |
7c1a1f1d | 216 | * @return @f$ f_i @f$ evaluated |
0bd4b00f | 217 | */ |
218 | static Double_t ILandauGaus(Double_t x, Double_t delta, Double_t xi, | |
219 | Double_t sigma, Double_t sigma_n, Int_t i); | |
220 | ||
221 | //------------------------------------------------------------------ | |
222 | /** | |
223 | * Numerically evaluate | |
224 | * @f[ | |
225 | * \left.\frac{\partial f_i}{\partial p_i}\right|_{x} | |
226 | * @f] | |
227 | * where @f$ p_i@f$ is the @f$ i^{\mbox{th}}@f$ parameter. The mapping | |
228 | * of the parameters is given by | |
229 | * | |
230 | * - 0: @f$\Delta@f$ | |
231 | * - 1: @f$\xi@f$ | |
232 | * - 2: @f$\sigma@f$ | |
233 | * - 3: @f$\sigma_n@f$ | |
234 | * | |
235 | * This is the partial derivative with respect to the parameter of | |
236 | * the response function corresponding to @f$ i@f$ particles i.e., | |
237 | * with the substitutions | |
238 | * @f[ | |
239 | * \Delta \rightarrow \Delta_i = i(\Delta + \xi\log(i))\\ | |
240 | * \xi \rightarrow \xi_i = i \xi\\ | |
241 | * \sigma \rightarrow \sigma_i = \sqrt{i}\sigma\\ | |
242 | * \sigma'^2 \rightarrow \sigma_i'^2 = \sigma_n^2 + \sigma_i^2 | |
243 | * @f] | |
244 | * | |
245 | * @param x Where to evaluate | |
246 | * @param ipar Parameter number | |
7c1a1f1d | 247 | * @param dp @f$ \epsilon\delta p_i@f$ for some value of @f$\epsilon@f$ |
0bd4b00f | 248 | * @param delta @f$ \Delta@f$ |
249 | * @param xi @f$ \xi@f$ | |
250 | * @param sigma @f$ \sigma@f$ | |
251 | * @param sigma_n @f$ \sigma_n@f$ | |
252 | * @param i @f$ i@f$ | |
253 | * | |
254 | * @return @f$ f_i@f$ evaluated | |
255 | */ | |
256 | static Double_t IdLandauGausdPar(Double_t x, UShort_t ipar, Double_t dp, | |
257 | Double_t delta, Double_t xi, | |
258 | Double_t sigma, Double_t sigma_n, Int_t i); | |
259 | ||
7f759bb7 | 260 | //------------------------------------------------------------------ |
9d99b0dd | 261 | /** |
7f759bb7 | 262 | * Evaluate |
c389303e | 263 | * @f[ |
0bd4b00f | 264 | * f_N(x;\Delta,\xi,\sigma') = \sum_{i=1}^N a_i f_i(x;\Delta,\xi,\sigma'a) |
265 | * @f] | |
9d99b0dd | 266 | * |
7f759bb7 | 267 | * where @f$ f(x;\Delta,\xi,\sigma')@f$ is the convolution of a |
268 | * Landau with a Gaussian (see LandauGaus). Note that | |
c389303e | 269 | * @f$ a_1 = 1@f$, @f$\Delta_i = i(\Delta_1 + \xi\log(i))@f$, |
270 | * @f$\xi_i=i\xi_1@f$, and @f$\sigma_i'^2 = \sigma_n^2 + i\sigma_1^2@f$. | |
7f759bb7 | 271 | * |
272 | * References: | |
273 | * - <a href="http://dx.doi.org/10.1016/0168-583X(84)90472-5">Nucl.Instrum.Meth.B1:16</a> | |
274 | * - <a href="http://dx.doi.org/10.1103/PhysRevA.28.615">Phys.Rev.A28:615</a> | |
275 | * - <a href="http://root.cern.ch/root/htmldoc/tutorials/fit/langaus.C.html">ROOT implementation</a> | |
9d99b0dd | 276 | * |
7f759bb7 | 277 | * @param x Where to evaluate @f$ f_N@f$ |
278 | * @param delta @f$ \Delta_1@f$ | |
279 | * @param xi @f$ \xi_1@f$ | |
280 | * @param sigma @f$ \sigma_1@f$ | |
281 | * @param sigma_n @f$ \sigma_n@f$ | |
282 | * @param n @f$ N@f$ in the sum above. | |
283 | * @param a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for | |
284 | * @f$ i > 1@f$ | |
285 | * | |
286 | * @return @f$ f_N(x;\Delta,\xi,\sigma')@f$ | |
9d99b0dd | 287 | */ |
7f759bb7 | 288 | static Double_t NLandauGaus(Double_t x, Double_t delta, Double_t xi, |
289 | Double_t sigma, Double_t sigma_n, Int_t n, | |
fb3430ac | 290 | const Double_t* a); |
0bd4b00f | 291 | /** |
292 | * Generate a TF1 object of @f$ f_I@f$ | |
293 | * | |
294 | * @param c Constant | |
295 | * @param delta @f$ \Delta@f$ | |
296 | * @param xi @f$ \xi_1@f$ | |
297 | * @param sigma @f$ \sigma_1@f$ | |
298 | * @param sigma_n @f$ \sigma_n@f$ | |
299 | * @param i @f$ i@f$ - the number of particles | |
300 | * @param xmin Least value of range | |
301 | * @param xmax Largest value of range | |
302 | * | |
303 | * @return Newly allocated TF1 object | |
304 | */ | |
305 | static TF1* MakeILandauGaus(Double_t c, | |
306 | Double_t delta, Double_t xi, | |
307 | Double_t sigma, Double_t sigma_n, | |
308 | Int_t i, | |
309 | Double_t xmin, Double_t xmax); | |
310 | /** | |
311 | * Generate a TF1 object of @f$ f_N@f$ | |
312 | * | |
313 | * @param c Constant | |
314 | * @param delta @f$ \Delta@f$ | |
315 | * @param xi @f$ \xi_1@f$ | |
316 | * @param sigma @f$ \sigma_1@f$ | |
317 | * @param sigma_n @f$ \sigma_n@f$ | |
318 | * @param n @f$ N@f$ - how many particles to sum to | |
319 | * @param a Array of size @f$ N-1@f$ of the weights @f$ a_i@f$ for | |
320 | * @f$ i > 1@f$ | |
321 | * @param xmin Least value of range | |
322 | * @param xmax Largest value of range | |
323 | * | |
324 | * @return Newly allocated TF1 object | |
325 | */ | |
326 | static TF1* MakeNLandauGaus(Double_t c, | |
327 | Double_t delta, Double_t xi, | |
328 | Double_t sigma, Double_t sigma_n, | |
fb3430ac | 329 | Int_t n, const Double_t* a, |
0bd4b00f | 330 | Double_t xmin, Double_t xmax); |
331 | ||
7f759bb7 | 332 | //__________________________________________________________________ |
333 | /** | |
334 | * Structure to do fits to the energy loss spectrum | |
335 | * | |
bd6f5206 | 336 | * @ingroup pwglf_forward |
7f759bb7 | 337 | */ |
338 | struct ELossFitter | |
339 | { | |
c389303e | 340 | enum { |
341 | kC = 0, | |
342 | kDelta, | |
343 | kXi, | |
344 | kSigma, | |
345 | kSigmaN, | |
346 | kN, | |
347 | kA | |
348 | }; | |
7f759bb7 | 349 | /** |
350 | * Constructor | |
351 | * | |
352 | * @param lowCut Lower cut of spectrum - data below this cuts is ignored | |
353 | * @param maxRange Maximum range to fit to | |
354 | * @param minusBins The number of bins below maximum to use | |
355 | */ | |
356 | ELossFitter(Double_t lowCut, Double_t maxRange, UShort_t minusBins); | |
7984e5f7 | 357 | /** |
358 | * Destructor | |
359 | * | |
360 | */ | |
7f759bb7 | 361 | virtual ~ELossFitter(); |
362 | /** | |
363 | * Clear internal arrays | |
364 | * | |
365 | */ | |
366 | void Clear(); | |
367 | /** | |
368 | * Fit a 1-particle signal to the passed energy loss distribution | |
369 | * | |
370 | * Note that this function clears the internal arrays first | |
371 | * | |
372 | * @param dist Data to fit the function to | |
373 | * @param sigman If larger than zero, the initial guess of the | |
374 | * detector induced noise. If zero or less, then this | |
375 | * parameter is ignored in the fit (fixed at 0) | |
376 | * | |
377 | * @return The function fitted to the data | |
378 | */ | |
379 | TF1* Fit1Particle(TH1* dist, Double_t sigman=-1); | |
380 | /** | |
381 | * Fit a N-particle signal to the passed energy loss distribution | |
382 | * | |
383 | * If there's no 1-particle fit present, it does that first | |
384 | * | |
385 | * @param dist Data to fit the function to | |
c389303e | 386 | * @param n Number of particle signals to fit |
7f759bb7 | 387 | * @param sigman If larger than zero, the initial guess of the |
388 | * detector induced noise. If zero or less, then this | |
389 | * parameter is ignored in the fit (fixed at 0) | |
390 | * | |
391 | * @return The function fitted to the data | |
392 | */ | |
393 | TF1* FitNParticle(TH1* dist, UShort_t n, Double_t sigman=-1); | |
fb3430ac | 394 | /** |
395 | * Get Lower cut on data | |
396 | * | |
397 | * @return Lower cut on data | |
398 | */ | |
399 | Double_t GetLowCut() const { return fLowCut; } | |
400 | /** | |
401 | * Get Maximum range to fit | |
402 | * | |
403 | * @return Maximum range to fit | |
404 | */ | |
405 | Double_t GetMaxRange() const { return fMaxRange; } | |
406 | /** | |
407 | * Get Number of bins from maximum to fit 1st peak | |
408 | * | |
409 | * @return Number of bins from maximum to fit 1st peak | |
410 | */ | |
411 | UShort_t GetMinusBins() const { return fMinusBins; } | |
412 | /** | |
413 | * Get Array of fit results | |
414 | * | |
415 | * @return Array of fit results | |
416 | */ | |
417 | const TObjArray& GetFitResults() const { return fFitResults; } | |
418 | /** | |
419 | * Get Array of fit results | |
420 | * | |
421 | * @return Array of fit results | |
422 | */ | |
423 | TObjArray& GetFitResults() { return fFitResults; } | |
424 | /** | |
425 | * Get Array of functions | |
426 | * | |
427 | * @return Array of functions | |
428 | */ | |
429 | const TObjArray& GetFunctions() const { return fFunctions; } | |
430 | /** | |
431 | * Get Array of functions | |
432 | * | |
433 | * @return Array of functions | |
434 | */ | |
435 | TObjArray& GetFunctions() { return fFunctions; } | |
436 | private: | |
7f759bb7 | 437 | const Double_t fLowCut; // Lower cut on data |
438 | const Double_t fMaxRange; // Maximum range to fit | |
439 | const UShort_t fMinusBins; // Number of bins from maximum to fit 1st peak | |
440 | TObjArray fFitResults; // Array of fit results | |
441 | TObjArray fFunctions; // Array of functions | |
442 | }; | |
0bd4b00f | 443 | /* @} */ |
7f759bb7 | 444 | |
445 | ||
0bd4b00f | 446 | //================================================================== |
447 | /** | |
448 | * @{ | |
449 | * @name Convenience containers | |
450 | */ | |
7e4038b5 | 451 | /** |
452 | * Structure to hold histograms | |
453 | * | |
bd6f5206 | 454 | * @ingroup pwglf_forward |
7e4038b5 | 455 | */ |
456 | struct Histos : public TObject | |
457 | { | |
458 | /** | |
459 | * Constructor | |
460 | * | |
461 | * | |
462 | */ | |
463 | Histos() : fFMD1i(0), fFMD2i(0), fFMD2o(0), fFMD3i(0), fFMD3o(0) {} | |
464 | /** | |
465 | * Copy constructor | |
466 | * | |
467 | * @param o Object to copy from | |
468 | */ | |
469 | Histos(const Histos& o) | |
470 | : TObject(o), | |
471 | fFMD1i(o.fFMD1i), | |
472 | fFMD2i(o.fFMD2i), | |
473 | fFMD2o(o.fFMD2o), | |
474 | fFMD3i(o.fFMD3i), | |
475 | fFMD3o(o.fFMD3o) | |
476 | {} | |
477 | /** | |
478 | * Assignement operator | |
479 | * | |
480 | * @return Reference to this | |
481 | */ | |
482 | Histos& operator=(const Histos&) { return *this;} | |
483 | /** | |
484 | * Destructor | |
485 | */ | |
486 | ~Histos(); | |
487 | /** | |
488 | * Initialize the object | |
489 | * | |
490 | * @param etaAxis Eta axis to use | |
491 | */ | |
492 | void Init(const TAxis& etaAxis); | |
493 | /** | |
494 | * Make a histogram | |
495 | * | |
496 | * @param d Detector | |
497 | * @param r Ring | |
498 | * @param etaAxis Eta axis to use | |
499 | * | |
500 | * @return Newly allocated histogram | |
501 | */ | |
502 | TH2D* Make(UShort_t d, Char_t r, const TAxis& etaAxis) const; | |
503 | /** | |
504 | * Clear data | |
505 | * | |
506 | * @param option Not used | |
507 | */ | |
508 | void Clear(Option_t* option=""); | |
509 | // const TH2D* Get(UShort_t d, Char_t r) const; | |
510 | /** | |
511 | * Get the histogram for a particular detector,ring | |
512 | * | |
513 | * @param d Detector | |
514 | * @param r Ring | |
515 | * | |
516 | * @return Histogram for detector,ring or nul | |
517 | */ | |
518 | TH2D* Get(UShort_t d, Char_t r) const; | |
519 | TH2D* fFMD1i; // Histogram for FMD1i | |
520 | TH2D* fFMD2i; // Histogram for FMD2i | |
521 | TH2D* fFMD2o; // Histogram for FMD2o | |
522 | TH2D* fFMD3i; // Histogram for FMD3i | |
523 | TH2D* fFMD3o; // Histogram for FMD3o | |
9d99b0dd | 524 | |
525 | ClassDef(Histos,1) | |
7e4038b5 | 526 | }; |
527 | ||
9d99b0dd | 528 | //__________________________________________________________________ |
ca610c5c | 529 | /** |
530 | * Base class for structure holding ring specific histograms | |
531 | * | |
bd6f5206 | 532 | * @ingroup pwglf_forward |
ca610c5c | 533 | */ |
9d99b0dd | 534 | struct RingHistos : public TObject |
535 | { | |
ca610c5c | 536 | /** |
537 | * Constructor | |
538 | * | |
539 | */ | |
9d99b0dd | 540 | RingHistos() : fDet(0), fRing('\0'), fName("") {} |
ca610c5c | 541 | /** |
542 | * | |
543 | * | |
544 | * @param d Detector | |
545 | * @param r Ring | |
546 | */ | |
9d99b0dd | 547 | RingHistos(UShort_t d, Char_t r) |
548 | : fDet(d), fRing(r), fName(TString::Format("FMD%d%c", d, r)) | |
549 | {} | |
ca610c5c | 550 | /** |
551 | * Copy constructor | |
552 | * | |
553 | * @param o Object to copy from | |
554 | */ | |
9d99b0dd | 555 | RingHistos(const RingHistos& o) |
556 | : TObject(o), fDet(o.fDet), fRing(o.fRing), fName(o.fName) | |
557 | {} | |
ca610c5c | 558 | /** |
559 | * | |
560 | */ | |
9d99b0dd | 561 | virtual ~RingHistos() {} |
ca610c5c | 562 | /** |
563 | * Assignement operator | |
564 | * | |
565 | * @param o Object to assign from | |
566 | * | |
567 | * @return Reference to this | |
568 | */ | |
9d99b0dd | 569 | RingHistos& operator=(const RingHistos& o) |
570 | { | |
d015ecfe | 571 | if (&o == this) return *this; |
9d99b0dd | 572 | TObject::operator=(o); |
573 | fDet = o.fDet; | |
574 | fRing = o.fRing; | |
575 | fName = o.fName; | |
576 | return *this; | |
577 | } | |
ca610c5c | 578 | /** |
7984e5f7 | 579 | * Define the outout list in @a d |
ca610c5c | 580 | * |
7984e5f7 | 581 | * @param d Where to put the output list |
ca610c5c | 582 | * |
7984e5f7 | 583 | * @return Newly allocated TList object or null |
ca610c5c | 584 | */ |
9d99b0dd | 585 | TList* DefineOutputList(TList* d) const; |
ca610c5c | 586 | /** |
7984e5f7 | 587 | * Get our output list from the container @a d |
ca610c5c | 588 | * |
7984e5f7 | 589 | * @param d where to get the output list from |
ca610c5c | 590 | * |
7984e5f7 | 591 | * @return The found TList or null |
ca610c5c | 592 | */ |
fb3430ac | 593 | TList* GetOutputList(const TList* d) const; |
ca610c5c | 594 | /** |
7984e5f7 | 595 | * Find a specific histogram in the source list @a d |
ca610c5c | 596 | * |
7984e5f7 | 597 | * @param d (top)-container |
598 | * @param name Name of histogram | |
ca610c5c | 599 | * |
7984e5f7 | 600 | * @return Found histogram or null |
ca610c5c | 601 | */ |
fb3430ac | 602 | TH1* GetOutputHist(const TList* d, const char* name) const; |
ca610c5c | 603 | /** |
604 | * | |
605 | * | |
606 | * | |
607 | * @return | |
608 | */ | |
7f759bb7 | 609 | Color_t Color() const |
610 | { | |
cc83fca2 | 611 | return AliForwardUtil::RingColor(fDet, fRing); |
7f759bb7 | 612 | } |
5bb5d1f6 | 613 | const char* GetName() const { return fName.Data(); } |
ca610c5c | 614 | UShort_t fDet; // Detector |
615 | Char_t fRing; // Ring | |
616 | TString fName; // Name | |
9d99b0dd | 617 | |
618 | ClassDef(RingHistos,1) | |
619 | }; | |
0bd4b00f | 620 | /* @} */ |
8e400b14 | 621 | private: |
622 | AliForwardUtil() {} | |
623 | AliForwardUtil(const AliForwardUtil& o) : TObject(o) {} | |
624 | AliForwardUtil& operator=(const AliForwardUtil&) { return *this; } | |
625 | ~AliForwardUtil() {} | |
626 | ||
627 | ||
628 | ClassDef(AliForwardUtil,1) // Utilities - do not make object | |
7e4038b5 | 629 | }; |
630 | ||
631 | #endif | |
632 | // Local Variables: | |
633 | // mode: C++ | |
634 | // End: | |
635 |