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1 | //-----------------------------------------------------// |
| 2 | // // |
| 3 | // Source File : PMDClustering.cxx, Version 00 // |
| 4 | // // |
| 5 | // Date : September 26 2002 // |
| 6 | // // |
| 7 | // clustering code for alice pmd // |
| 8 | // // |
| 9 | //-----------------------------------------------------// |
| 10 | |
| 11 | /* |
| 12 | -------------------------------------------------------------------- |
| 13 | Code developed by S. C. Phatak, Institute of Physics, |
| 14 | Bhubaneswar 751 005 ( phatak@iopb.res.in ) Given the energy deposited |
| 15 | ( or ADC value ) in each cell of supermodule ( pmd or cpv ), the code |
| 16 | builds up superclusters and breaks them into clusters. The input is |
| 17 | in array d[ndimx][ndimy] and cluster information is in array |
| 18 | clusters[5][5000]. integer clno gives total number of clusters in the |
| 19 | supermodule. |
| 20 | |
| 21 | d, clno and clusters are the only global ( public ) variables. Others |
| 22 | are local ( private ) to the code. |
| 23 | |
| 24 | At the moment, the data is read for whole detector ( all supermodules |
| 25 | and pmd as well as cpv. This will have to be modify later ) |
| 26 | |
| 27 | LAST UPDATE : October 23, 2002 |
| 28 | ----------------------------------------------------------------------- |
| 29 | */ |
| 30 | |
| 31 | |
| 32 | |
| 33 | #include <TNtuple.h> |
| 34 | #include <TObjArray.h> |
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35 | #include "AliPMDcluster.h" |
| 36 | #include "AliPMDClustering.h" |
| 37 | #include <stdio.h> |
| 38 | |
| 39 | ClassImp(AliPMDClustering) |
| 40 | |
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41 | const double AliPMDClustering::pi=3.141593; |
| 42 | const double AliPMDClustering::sqrth=0.8660254; // sqrth = sqrt(3.)/2. |
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43 | |
| 44 | |
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45 | AliPMDClustering::AliPMDClustering() |
| 46 | { |
| 47 | fMessage = 0; |
| 48 | for(int i = 0; i < ndimx; i++) |
| 49 | { |
| 50 | for(int j = 0; j < ndimy; j++) |
| 51 | { |
| 52 | coord[0][i][j] = i+j/2.; |
| 53 | coord[1][i][j] = sqrth*j; |
| 54 | } |
| 55 | } |
| 56 | } |
| 57 | AliPMDClustering::~AliPMDClustering() |
| 58 | { |
| 59 | |
| 60 | } |
| 61 | |
| 62 | //void AliPMDClustering::DoClust(int idet, int isup, double d1[72][72], AliPMDContainer *pmdc) |
| 63 | void AliPMDClustering::DoClust(int idet, int isup, double d1[72][72], TObjArray *pmdcont) |
| 64 | { |
| 65 | |
| 66 | AliPMDcluster *pmdcl = 0; |
| 67 | |
| 68 | int i, i1, i2, j, nmx1, incr; |
| 69 | double cutoff, ave; |
| 70 | Float_t clusdata[5]; |
| 71 | |
| 72 | const float twobysqrt3 = 1.1547; // 2./sqrt(3.) |
| 73 | |
| 74 | // if (fMessage == 1) |
| 75 | { |
| 76 | cout << " supermodule no. " << idet << " " << isup << endl; |
| 77 | } |
| 78 | |
| 79 | for (i = 0; i < ndimx; i++) |
| 80 | { |
| 81 | for (j = 0; j < ndimy; j++) |
| 82 | { |
| 83 | d[i][j] = d1[i][j]; |
| 84 | } |
| 85 | } |
| 86 | order(idet); // order the data |
| 87 | cutoff=400.; // cutoff used to discard cells having ener. dep. |
| 88 | ave=0.; |
| 89 | nmx1=-1; |
| 90 | |
| 91 | for(j=0;j<nmx; j++) |
| 92 | { |
| 93 | i1 = iord[0][j]; |
| 94 | i2 = iord[1][j]; |
| 95 | if (d[i1][i2] > 0.) {ave=ave+d[i1][i2];} |
| 96 | if (d[i1][i2] >= cutoff ) nmx1 = nmx1 + 1; |
| 97 | } |
| 98 | // nmx1 --- number of cells having ener dep >= cutoff |
| 99 | if (fMessage == 1) |
| 100 | { |
| 101 | cout << " nmx1 " << nmx1 << endl; |
| 102 | } |
| 103 | ave=ave/nmx1; |
| 104 | if (fMessage == 1) |
| 105 | { |
| 106 | cout <<"nmx " << nmx << " nmx1 " << nmx1<< " ave "<<ave<< |
| 107 | " cutoff " << cutoff << endl; |
| 108 | } |
| 109 | |
| 110 | incr = crclust(ave, cutoff, nmx1, idet); |
| 111 | |
| 112 | refclust(incr, i, idet); |
| 113 | if (fMessage == 1) |
| 114 | { |
| 115 | if(idet == 0)cout <<" supermodule ( pmd ) = "<< isup <<" done " |
| 116 | <<endl; |
| 117 | if(idet == 1)cout <<" supermodule ( cpv ) = "<< isup <<" done " |
| 118 | <<endl; |
| 119 | cout << "clno " << clno << endl; |
| 120 | } |
| 121 | |
| 122 | |
| 123 | for(i1=0; i1<clno; i1++) |
| 124 | { |
| 125 | float clu_xc = (float) clusters[0][i1]; |
| 126 | float clu_yc = (float) clusters[1][i1]; |
| 127 | float clu_adc = (float) clusters[2][i1]; |
| 128 | float clu_cells = (float) clusters[3][i1]; |
| 129 | float clu_rad = (float) clusters[4][i1]; |
| 130 | |
| 131 | float clu_y0 = twobysqrt3*clu_yc; |
| 132 | float clu_x0 = clu_xc - clu_y0/2.; |
| 133 | |
| 134 | clusdata[0] = clu_cells; |
| 135 | clusdata[1] = clu_x0; |
| 136 | clusdata[2] = clu_y0; |
| 137 | clusdata[3] = clu_adc; |
| 138 | clusdata[4] = clu_rad; |
| 139 | |
| 140 | pmdcl = new AliPMDcluster(clusdata); |
| 141 | pmdcont->Add(pmdcl); |
| 142 | } |
| 143 | |
| 144 | delete pmdcl; |
| 145 | |
| 146 | } |
| 147 | |
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148 | void AliPMDClustering::order(int /*idet*/) |
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149 | { |
| 150 | // using simple sort |
| 151 | double dd[nmx], adum;// matrix d converted into |
| 152 | // one dimensional array dd. adum a place holder for double |
| 153 | int i, j, i1, i2, iord1[nmx], itst, idum; // information of |
| 154 | // ordering is stored in iord1, original array not ordered |
| 155 | // |
| 156 | // define arrays dd and iord1 |
| 157 | for(i1=0; i1 < ndimx; i1++){ |
| 158 | for(i2=0; i2 < ndimy; i2++){ |
| 159 | i=i1+i2*ndimx; |
| 160 | iord1[i]=i; dd[i]=d[i1][i2]; |
| 161 | } |
| 162 | } |
| 163 | // sort and store sorting information in iord1 |
| 164 | for(j=1; j < nmx; j++){ |
| 165 | itst=0; adum=dd[j]; idum=iord1[j]; |
| 166 | for(i1=0; i1 < j ; i1++){ |
| 167 | if(adum > dd[i1] && itst == 0){ |
| 168 | itst=1; |
| 169 | for(i2=j-1; i2 >= i1 ; i2=i2--){ |
| 170 | dd[i2+1]=dd[i2]; |
| 171 | iord1[i2+1]=iord1[i2]; |
| 172 | } |
| 173 | dd[i1]=adum; iord1[i1]=idum; |
| 174 | } |
| 175 | } |
| 176 | } |
| 177 | // store the sorted information in iord for later use |
| 178 | for(i=0; i<nmx; i++){ |
| 179 | j=iord1[i]; i2=j/ndimx; |
| 180 | i1=j-i2*ndimx; |
| 181 | iord[0][i]=i1; |
| 182 | iord[1][i]=i2; |
| 183 | } |
| 184 | } |
| 185 | |
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186 | void AliPMDClustering::refclust(int incr, int /*supmod*/, int /*idet*/) |
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187 | { |
| 188 | int i, j, k, i1, i2, id, icl, ncl[4500], iord[4500], itest; |
| 189 | int ihld; |
| 190 | int ig, nsupcl, lev1[20], lev2[20]; |
| 191 | double x[4500], y[4500], z[4500], x1, y1, z1, x2, y2, z2, dist; |
| 192 | double xc[4500], yc[4500], zc[4500], cells[4500], sum, rc[4500], rr; |
| 193 | // clno counts the final clusters |
| 194 | // nsupcl = # of superclusters; ncl[i]= # of cells in supercluster i |
| 195 | // x, y and z store (x,y) coordinates of and energy deposited in a cell |
| 196 | // xc, yc store (x,y) coordinates of the cluster center |
| 197 | // zc stores the energy deposited in a cluster |
| 198 | // rc is cluster radius |
| 199 | // finally the cluster information is put in 2-dimensional array clusters |
| 200 | // ofstream ofl1("checking.5",ios::app); |
| 201 | clno=-1; |
| 202 | nsupcl=-1; |
| 203 | for(i=0; i<4500; i++){ncl[i]=-1;} |
| 204 | for(i=0; i<incr; i++){ |
| 205 | if(infcl[0][i] != nsupcl){ nsupcl=nsupcl+1; } |
| 206 | ncl[nsupcl]=ncl[nsupcl]+1; |
| 207 | } |
| 208 | if (fMessage == 1) |
| 209 | { |
| 210 | cout << " # of cells " <<incr+1 << " # of superclusters " << nsupcl+1 |
| 211 | << endl; |
| 212 | } |
| 213 | id=-1; |
| 214 | icl=-1; |
| 215 | for(i=0; i<nsupcl; i++){ |
| 216 | if(ncl[i] == 0){ |
| 217 | id=id+1; |
| 218 | icl=icl+1; |
| 219 | // one cell super-clusters --> single cluster |
| 220 | // cluster center at the centyer of the cell |
| 221 | // cluster radius = half cell dimension |
| 222 | clno=clno+1; |
| 223 | i1=infcl[1][id]; |
| 224 | i2=infcl[2][id]; |
| 225 | clusters[0][clno]=coord[0][i1][i2]; |
| 226 | clusters[1][clno]=coord[1][i1][i2]; |
| 227 | clusters[2][clno]=d[i1][i2]; |
| 228 | clusters[3][clno]=1.; |
| 229 | clusters[4][clno]=0.5; |
| 230 | //ofl1 << icl << " " << coord[0][i1][i2] << " " << coord[1][i1][i2] << |
| 231 | //" " << d[i1][i2] << " " << clusters[3][clno] <<endl; |
| 232 | }else if(ncl[i] == 1){ |
| 233 | // two cell super-cluster --> single cluster |
| 234 | // cluster center is at ener. dep.-weighted mean of two cells |
| 235 | // cluster radius == half cell dimension |
| 236 | id=id+1; |
| 237 | icl=icl+1; |
| 238 | clno=clno+1; |
| 239 | i1=infcl[1][id]; |
| 240 | i2=infcl[2][id]; |
| 241 | x1=coord[0][i1][i2]; |
| 242 | y1=coord[1][i1][i2]; |
| 243 | z1=d[i1][i2]; |
| 244 | id=id+1; |
| 245 | i1=infcl[1][id]; |
| 246 | i2=infcl[2][id]; |
| 247 | x2=coord[0][i1][i2]; |
| 248 | y2=coord[1][i1][i2]; |
| 249 | z2=d[i1][i2]; |
| 250 | clusters[0][clno]=(x1*z1+x2*z2)/(z1+z2); |
| 251 | clusters[1][clno]=(y1*z1+y2*z2)/(z1+z2); |
| 252 | clusters[2][clno]=z1+z2; |
| 253 | clusters[3][clno]=2.; |
| 254 | clusters[4][clno]=0.5; |
| 255 | //ofl1 << icl << " " << clusters[0][clno] << " " << clusters[1][clno] |
| 256 | // << " " << clusters[2][clno] << " " <<clusters[3][clno] <<endl; |
| 257 | }else{ |
| 258 | id=id+1; |
| 259 | iord[0]=0; |
| 260 | // super-cluster of more than two cells - broken up into smaller |
| 261 | // clusters gaussian centers computed. (peaks separated by > 1 cell) |
| 262 | // Begin from cell having largest energy deposited This is first |
| 263 | // cluster center |
| 264 | i1=infcl[1][id]; |
| 265 | i2=infcl[2][id]; |
| 266 | x[0]=coord[0][i1][i2]; |
| 267 | y[0]=coord[1][i1][i2]; |
| 268 | z[0]=d[i1][i2]; |
| 269 | iord[0]=0; |
| 270 | for(j=1;j<=ncl[i];j++){ |
| 271 | id=id+1; |
| 272 | i1=infcl[1][id]; |
| 273 | i2=infcl[2][id]; |
| 274 | iord[j]=j; |
| 275 | x[j]=coord[0][i1][i2]; |
| 276 | y[j]=coord[1][i1][i2]; |
| 277 | z[j]=d[i1][i2]; |
| 278 | } |
| 279 | // arranging cells within supercluster in decreasing order |
| 280 | for(j=1;j<=ncl[i];j++){ |
| 281 | itest=0; ihld=iord[j]; |
| 282 | for(i1=0;i1<j;i1++){ |
| 283 | if(itest == 0 && z[iord[i1]] < z[ihld]){ |
| 284 | itest=1; |
| 285 | for(i2=j-1;i2>=i1;i2--){ |
| 286 | iord[i2+1]=iord[i2]; |
| 287 | } |
| 288 | iord[i1]=ihld; |
| 289 | } |
| 290 | } |
| 291 | } |
| 292 | // compute the number of Gaussians and their centers ( first |
| 293 | // guess ) |
| 294 | // centers must be separated by cells having smaller ener. dep. |
| 295 | // neighbouring centers should be either strong or well-separated |
| 296 | ig=0; |
| 297 | xc[ig]=x[iord[0]]; |
| 298 | yc[ig]=y[iord[0]]; |
| 299 | zc[ig]=z[iord[0]]; |
| 300 | for(j=1;j<=ncl[i];j++){ |
| 301 | itest=-1; |
| 302 | x1=x[iord[j]]; |
| 303 | y1=y[iord[j]]; |
| 304 | for(k=0;k<=ig;k++){ |
| 305 | x2=xc[k]; y2=yc[k]; |
| 306 | rr=Dist(x1,y1,x2,y2); |
| 307 | if( rr >= 1.1 && rr < 1.8 && z[iord[j]] > zc[k]/4.) |
| 308 | itest=itest+1; |
| 309 | if( rr >= 1.8 && rr < 2.1 && z[iord[j]] > zc[k]/10.) |
| 310 | itest=itest+1; |
| 311 | if( rr >= 2.1)itest=itest+1; |
| 312 | } |
| 313 | if(itest == ig){ |
| 314 | ig=ig+1; |
| 315 | xc[ig]=x1; |
| 316 | yc[ig]=y1; |
| 317 | zc[ig]=z[iord[j]]; |
| 318 | } |
| 319 | } |
| 320 | // for(j=0; j<=ig; j++){ |
| 321 | //ofl1 << icl+j+1 << " " << xc[j] << " " <<yc[j] <<" "<<zc[j]<<endl; |
| 322 | //} |
| 323 | // gaussfit to adjust cluster parameters to minimize |
| 324 | gaussfit(ncl[i], ig, x[0], y[0] ,z[0], xc[0], yc[0], zc[0], rc[0]); |
| 325 | icl=icl+ig+1; |
| 326 | // compute the number of cells belonging to each cluster. |
| 327 | // cell is shared between several clusters ( if they are equidistant |
| 328 | // from it ) in the ratio of cluster energy deposition |
| 329 | for(j=0; j<=ig; j++){ |
| 330 | cells[j]=0.; |
| 331 | } |
| 332 | if(ig > 0){ |
| 333 | for(j=0; j<=ncl[i]; j++){ |
| 334 | lev1[0]=0; |
| 335 | lev2[0]=0; |
| 336 | for(k=0; k<=ig; k++){ |
| 337 | dist=Dist(x[j], y[j], xc[k], yc[k]); |
| 338 | if(dist < sqrt(3.) ){ |
| 339 | lev1[0]++; |
| 340 | i1=lev1[0]; |
| 341 | lev1[i1]=k; |
| 342 | }else{ |
| 343 | if(dist < 2.1){ |
| 344 | lev2[0]++; |
| 345 | i1=lev2[0]; |
| 346 | lev2[i1]=k; |
| 347 | } |
| 348 | } |
| 349 | } |
| 350 | if(lev1[0] != 0){ |
| 351 | if(lev1[0] == 1){cells[lev1[1]]=cells[lev1[1]]+1.;} |
| 352 | else{ |
| 353 | sum=0.; |
| 354 | for(k=1; k<=lev1[0]; k++){ |
| 355 | sum=sum+zc[lev1[k]]; |
| 356 | } |
| 357 | for(k=1; k<=lev1[0]; k++){ |
| 358 | cells[lev1[k]]=cells[lev1[k]]+zc[lev1[k]]/sum; |
| 359 | } |
| 360 | } |
| 361 | }else{ |
| 362 | if(lev2[0] == 0){cells[lev2[1]]=cells[lev2[1]]+1.;} |
| 363 | else{ |
| 364 | sum=0.; |
| 365 | for(k=1; k<=lev2[0]; k++){ |
| 366 | sum=sum+zc[lev2[k]]; |
| 367 | } |
| 368 | for(k=1; k<=lev2[0]; k++){ |
| 369 | cells[lev2[k]]=cells[lev2[k]]+zc[lev2[k]]/sum; |
| 370 | } |
| 371 | } |
| 372 | } |
| 373 | } |
| 374 | } |
| 375 | for(j=0; j<=ig; j++){ |
| 376 | clno=clno+1; |
| 377 | clusters[0][clno]=xc[j]; |
| 378 | clusters[1][clno]=yc[j]; |
| 379 | clusters[2][clno]=zc[j]; |
| 380 | clusters[4][clno]=rc[j]; |
| 381 | if(ig == 0){ |
| 382 | clusters[3][clno]=ncl[i]; |
| 383 | }else{ |
| 384 | clusters[3][clno]=cells[j]; |
| 385 | } |
| 386 | } |
| 387 | } |
| 388 | } |
| 389 | |
| 390 | } |
| 391 | |
| 392 | |
| 393 | void AliPMDClustering::gaussfit(int ncell, int nclust, double &x, double &y ,double &z, double &xc, double &yc, double &zc, double &rc) |
| 394 | { |
| 395 | int i, j, i1, i2, jmax, novar, idd, jj; |
| 396 | double xx[4500], yy[4500], zz[4500], xxc[4500], yyc[4500]; |
| 397 | double a[4500], b[4500], c[4500], d[4500], ha[4500], hb[4500]; |
| 398 | double hc[4500], hd[4500], zzc[4500], rrc[4500]; |
| 399 | int neib[4500][50]; |
| 400 | double sum, dx, dy, str, str1, aint, sum1, rr, dum; |
| 401 | double x1, x2, y1, y2; |
| 402 | str=0.; |
| 403 | str1=0.; |
| 404 | rr=0.3; |
| 405 | novar=0; |
| 406 | |
| 407 | j = 0; // Just put not to see the compiler warning, BKN |
| 408 | |
| 409 | |
| 410 | for(i=0; i<=ncell; i++){ |
| 411 | xx[i]=*(&x+i); |
| 412 | yy[i]=*(&y+i); |
| 413 | zz[i]=*(&z+i); |
| 414 | str=str+zz[i]; |
| 415 | } |
| 416 | for(i=0; i<=nclust; i++){ |
| 417 | xxc[i]=*(&xc+i); |
| 418 | yyc[i]=*(&yc+i); |
| 419 | zzc[i]=*(&zc+i); |
| 420 | str1=str1+zzc[i]; |
| 421 | rrc[i]=0.5; |
| 422 | |
| 423 | } |
| 424 | for(i=0; i<=nclust; i++){ |
| 425 | zzc[i]=str/str1*zzc[i]; |
| 426 | ha[i]=xxc[i]; |
| 427 | hb[i]=yyc[i]; |
| 428 | hc[i]=zzc[i]; |
| 429 | hd[i]=rrc[i]; |
| 430 | x1=xxc[i]; |
| 431 | y1=yyc[i]; |
| 432 | } |
| 433 | for(i=0; i<=ncell; i++){ |
| 434 | idd=0; |
| 435 | x1=xx[i]; |
| 436 | y1=yy[i]; |
| 437 | for(j=0; j<=nclust; j++){ |
| 438 | x2=xxc[j]; |
| 439 | y2=yyc[j]; |
| 440 | if(Dist(x1,y1,x2,y2) <= 3.){ idd=idd+1; neib[i][idd]=j; } |
| 441 | } |
| 442 | |
| 443 | neib[i][0]=idd; |
| 444 | } |
| 445 | sum=0.; |
| 446 | for(i1=0; i1<=ncell; i1++){ |
| 447 | aint=0.; |
| 448 | idd=neib[i1][0]; |
| 449 | for(i2=1; i2<=idd; i2++){ |
| 450 | jj=neib[i1][i2]; |
| 451 | dx=xx[i1]-xxc[jj]; |
| 452 | dy=yy[i1]-yyc[jj]; |
| 453 | dum=rrc[j]*rrc[jj]+rr*rr; |
| 454 | aint=aint+exp(-(dx*dx+dy*dy)/dum)*zzc[idd]*rr*rr/dum; |
| 455 | } |
| 456 | sum=sum+(aint-zz[i1])*(aint-zz[i1])/str; |
| 457 | } |
| 458 | jmax=nclust*1000; |
| 459 | if(nclust > 20)jmax=20000; |
| 460 | for(j=0; j<jmax; j++){ |
| 461 | str1=0.; |
| 462 | for(i=0; i<=nclust; i++){ |
| 463 | a[i]=xxc[i]+0.6*(ranmar()-0.5); |
| 464 | b[i]=yyc[i]+0.6*(ranmar()-0.5); |
| 465 | c[i]=zzc[i]*(1.+(ranmar()-0.5)*0.2); |
| 466 | str1=str1+zzc[i]; |
| 467 | d[i]=rrc[i]*(1.+(ranmar()-0.5)*0.1); |
| 468 | if(d[i] < 0.25)d[i]=0.25; |
| 469 | } |
| 470 | for(i=0; i<=nclust; i++){ c[i]=c[i]*str/str1; } |
| 471 | sum1=0.; |
| 472 | for(i1=0; i1<=ncell; i1++){ |
| 473 | aint=0.; |
| 474 | idd=neib[i1][0]; |
| 475 | for(i2=1; i2<=idd; i2++){ |
| 476 | jj=neib[i1][i2]; |
| 477 | dx=xx[i1]-a[jj]; |
| 478 | dy=yy[i1]-b[jj]; |
| 479 | dum=d[jj]*d[jj]+rr*rr; |
| 480 | aint=aint+exp(-(dx*dx+dy*dy)/dum)*c[i2]*rr*rr/dum; |
| 481 | } |
| 482 | sum1=sum1+(aint-zz[i1])*(aint-zz[i1])/str; |
| 483 | } |
| 484 | |
| 485 | if(sum1 < sum){ |
| 486 | for(i2=0; i2<=nclust; i2++){ |
| 487 | xxc[i2]=a[i2]; |
| 488 | yyc[i2]=b[i2]; |
| 489 | zzc[i2]=c[i2]; |
| 490 | rrc[i2]=d[i2]; |
| 491 | sum=sum1; |
| 492 | |
| 493 | } |
| 494 | } |
| 495 | } |
| 496 | for(j=0; j<=nclust; j++){ |
| 497 | *(&xc+j)=xxc[j]; |
| 498 | *(&yc+j)=yyc[j]; |
| 499 | *(&zc+j)=zzc[j]; |
| 500 | *(&rc+j)=rrc[j]; |
| 501 | } |
| 502 | } |
| 503 | |
| 504 | |
| 505 | double AliPMDClustering::Dist(double x1, double y1, double x2, double y2) |
| 506 | { |
| 507 | return sqrt((x1-x2)*(x1-x2) + (y1-y2)*(y1-y2)); |
| 508 | } |
| 509 | |
| 510 | |
| a854e5de |
511 | int AliPMDClustering::crclust(double /*ave*/, double cutoff, int nmx1, int /*idet*/) |
| deb0fc73 |
512 | { |
| 513 | int i,j,k,id1,id2,icl, numcell, clust[2][5000]; |
| 514 | int jd1,jd2, icell, cellcount; |
| 515 | static int neibx[6]={1,0,-1,-1,0,1}, neiby[6]={0,1,1,0,-1,-1}; |
| 516 | // neibx and neiby define ( incremental ) (i,j) for the neighbours of a |
| 517 | // cell. There are six neighbours. |
| 518 | // cellcount --- total number of cells having nonzero ener dep |
| 519 | // numcell --- number of cells in a given supercluster |
| 520 | //ofstream ofl0("cells_loc",ios::out); |
| 521 | // initialize infocl[2][ndimx][ndimy] |
| 522 | for (j=0; j < 72; j++){ |
| 523 | for(k=0; k < 72; k++){ |
| 524 | infocl[0][j][k] = 0; |
| 525 | infocl[1][j][k] = 0; |
| 526 | } |
| 527 | } |
| 528 | for(i=0; i < nmx; i++){ |
| 529 | infcl[0][i] = -1; |
| 530 | id1=iord[0][i]; |
| 531 | id2=iord[1][i]; |
| 532 | if(d[id1][id2] <= cutoff){infocl[0][id1][id2]=-1;} |
| 533 | } |
| 534 | // --------------------------------------------------------------- |
| 535 | // crude clustering begins. Start with cell having largest adc |
| 536 | // count and loop over the cells in descending order of adc count |
| 537 | // --------------------------------------------------------------- |
| 538 | icl=-1; |
| 539 | cellcount=-1; |
| 540 | for(icell=0; icell <= nmx1; icell++){ |
| 541 | id1=iord[0][icell]; |
| 542 | id2=iord[1][icell]; |
| 543 | if(infocl[0][id1][id2] == 0 ){ |
| 544 | // --------------------------------------------------------------- |
| 545 | // icl -- cluster #, numcell -- # of cells in it, clust -- stores |
| 546 | // coordinates of the cells in a cluster, infocl[0][i1][i2] is 1 for |
| 547 | // primary and 2 for secondary cells, |
| 548 | // infocl[1][i1][i2] stores cluster # |
| 549 | // --------------------------------------------------------------- |
| 550 | icl=icl+1; |
| 551 | numcell=0; |
| 552 | cellcount=cellcount+1; |
| 553 | infocl[0][id1][id2]=1; |
| 554 | infocl[1][id1][id2]=icl; |
| 555 | infcl[0][cellcount]=icl; |
| 556 | infcl[1][cellcount]=id1; |
| 557 | infcl[2][cellcount]=id2; |
| 558 | clust[0][numcell]=id1; |
| 559 | clust[1][numcell]=id2; |
| 560 | for(i=1; i<5000; i++)clust[0][i]=0; |
| 561 | // --------------------------------------------------------------- |
| 562 | // check for adc count in neib. cells. If ne 0 put it in this clust |
| 563 | // --------------------------------------------------------------- |
| 564 | for(i=0; i<6; i++){ |
| 565 | jd1=id1+neibx[i]; |
| 566 | jd2=id2+neiby[i]; |
| 567 | if( (jd1 >= 0 && jd1 < 72) && (jd2 >= 0 && jd2 < 72) && |
| 568 | infocl[0][jd1][jd2] == 0){ |
| 569 | numcell=numcell+1; |
| 570 | infocl[0][jd1][jd2]=2; |
| 571 | infocl[1][jd1][jd2]=icl; |
| 572 | clust[0][numcell]=jd1; |
| 573 | clust[1][numcell]=jd2; |
| 574 | cellcount=cellcount+1; |
| 575 | infcl[0][cellcount]=icl; |
| 576 | infcl[1][cellcount]=jd1; |
| 577 | infcl[2][cellcount]=jd2; |
| 578 | } |
| 579 | } |
| 580 | // --------------------------------------------------------------- |
| 581 | // check adc count for neighbour's neighbours recursively and |
| 582 | // if nonzero, add these to the cluster. |
| 583 | // --------------------------------------------------------------- |
| 584 | for(i=1;i < 5000;i++){ |
| 585 | if(clust[0][i] != 0){ |
| 586 | id1=clust[0][i]; |
| 587 | id2=clust[1][i]; |
| 588 | for(j=0; j<6 ; j++){ |
| 589 | jd1=id1+neibx[j]; |
| 590 | jd2=id2+neiby[j]; |
| 591 | if( (jd1 >= 0 && jd1 < 72) && (jd2 >= 0 && jd2 < 72) && |
| 592 | infocl[0][jd1][jd2] == 0 ){ |
| 593 | infocl[0][jd1][jd2]=2; |
| 594 | infocl[1][jd1][jd2]=icl; |
| 595 | numcell=numcell+1; |
| 596 | clust[0][numcell]=jd1; |
| 597 | clust[1][numcell]=jd2; |
| 598 | cellcount=cellcount+1; |
| 599 | infcl[0][cellcount]=icl; |
| 600 | infcl[1][cellcount]=jd1; |
| 601 | infcl[2][cellcount]=jd2; |
| 602 | } |
| 603 | } |
| 604 | } |
| 605 | } |
| 606 | } |
| 607 | } |
| 608 | // for(icell=0; icell<=cellcount; icell++){ |
| 609 | // ofl0 << infcl[0][icell] << " " << infcl[1][icell] << " " << |
| 610 | // infcl[2][icell] << endl; |
| 611 | // } |
| 612 | return cellcount; |
| 613 | } |
| 614 | |
| 615 | double AliPMDClustering::ranmar() |
| 616 | { |
| 617 | /* C==========================C*/ |
| 618 | /*===================================C==========================*/ |
| 619 | /* Universal random number generator proposed by Marsaglia and Zaman |
| 620 | in report FSU-SCRI-87-50 */ |
| 621 | |
| 622 | // clock_t start; |
| 623 | int ii, jj; |
| 624 | static int i=96, j=32, itest=0, i1, i2, i3, i4, i5; |
| 625 | static double u[97], c, cd, cm, s, t; |
| 626 | static double uni; |
| 627 | int count1,count2,idum; |
| 628 | /* $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ */ |
| 629 | if (itest == 0) { |
| 630 | //******************************************************* |
| 631 | // following three lines if the seed to be provided by computer |
| 632 | // start = time(NULL); |
| 633 | // ii=start; |
| 634 | // jj=start; |
| 635 | //******************************************************* |
| 636 | //following two lines for fixed seed ( during testing only. Else |
| 637 | //use preceeing three lines |
| 638 | ii=8263; |
| 639 | jj=5726; |
| 640 | if(ii > 31328 ) ii = ii - ( ii / 31328 ) * 31328; |
| 641 | if(jj > 30081 ) jj = jj - ( jj / 30081 ) * 30081; |
| 642 | itest=itest+1; |
| 643 | if((( ii > 0 ) && ( ii <= 31328 )) && (( jj > 0 ) && |
| 644 | ( jj <= 30081 ))){ |
| 645 | i1=ii/177+2; i2=ii-(i1-2)*177+2; i3=jj/169+1; i4=jj-(i3-1)*169; |
| 646 | i4 = jj - (i3-1)*169; |
| 647 | count1=0; |
| 648 | while ( count1 < 97 ){ |
| 649 | s=0.; |
| 650 | t=0.5; |
| 651 | count2=0; |
| 652 | while( count2 < 24 ){ |
| 653 | idum=i1*i2/179; |
| 654 | idum=( i1*i2 - (i1*i2/179)*179 ) * i3; |
| 655 | i5=idum-(idum/179)*179; |
| 656 | i1=i2; i2=i3; i3=i5; idum=53*i4+1; i4=idum-(idum/169)*169; |
| 657 | if( i4*i5-((i4*i5)/64)*64 >= 32 ) s=s+t; |
| 658 | t=0.5*t; |
| 659 | count2=count2+1; |
| 660 | } |
| 661 | u[count1] = s; |
| 662 | count1 = count1 +1; |
| 663 | } |
| 664 | c = 362436./16777216.; cd = 7654321./16777216.; |
| 665 | cm = 16777213./16777216.; |
| 666 | } |
| 667 | else{ |
| 668 | cout << " wrong initialization " << endl; |
| 669 | } |
| 670 | } |
| 671 | else{ |
| 672 | uni = u[i] - u[j]; if( uni < 0.) uni = uni + 1; u[i] = uni; |
| 673 | i = i -1; |
| 674 | if( i < 0 ) i = 96; j = j - 1; if ( j < 0 ) j = 96; c = c - cd; |
| 675 | if( c < 0. ) c = c+cm; uni = uni-c ; if( uni < 0. )uni = uni+1.; |
| 676 | // return uni; |
| 677 | } |
| 678 | return uni; |
| 679 | |
| 680 | } |
| 681 | |
| 682 | void AliPMDClustering::ConvertL2G(int smnumber, double xcell, double ycell, double &xpos, double &ypos) |
| 683 | { |
| 684 | float xreal = -999., yreal = -999.; |
| 685 | float cell_rad=0.25, celldia_x=0.5, celldia_y=0.4330127; |
| 686 | float xcon, ycon; |
| 687 | float xoff1, xoff2, yoff=0.2886751, yoff3; |
| 688 | float xhex1 = -27.09375, yhex1 = -15.652584; |
| 689 | float xhex2 = 27.09375, yhex2 = -15.652584; |
| 690 | float xhex3 = 0.0, yhex3 = 31.285168; |
| 691 | |
| 692 | |
| 693 | double xcorner[27] = |
| 694 | { |
| 695 | 9.435395, 45.560394, 81.685394, -8.627106, |
| 696 | 27.497894, 63.622894, -26.689606, 9.435394, |
| 697 | 45.560394, 9.435344, -8.627106, -26.689556, |
| 698 | 45.560345, 27.497894, 9.435445, 81.685341, |
| 699 | 63.622894, 45.560444, -18.870789, -36.933388, |
| 700 | -54.995991, -36.933189, -54.995789, -73.058388, |
| 701 | -54.995586, -73.058189, -91.120789 |
| 702 | }; |
| 703 | |
| 704 | double ycorner[27] = |
| 705 | { |
| 706 | -16.342583, -16.34258, -16.34258, -47.627750, -47.627750, |
| 707 | -47.627750, -78.912918, -78.912918, -78.912918, 16.342611, |
| 708 | 47.627808, 78.913002, 16.342554, 47.627750, 78.912949, |
| 709 | 16.342495, 47.627693, 78.912888, -0.000116, -31.285227, |
| 710 | -62.570335, 31.285110, 0.000000, -31.285110, 62.570335, |
| 711 | 31.285227, 0.000116 |
| 712 | }; |
| 713 | |
| 714 | if (smnumber<=8) |
| 715 | { |
| 716 | xcon = xcorner[smnumber]+xhex1; |
| 717 | ycon = ycorner[smnumber]+yhex1; |
| 718 | xoff1 = celldia_x+(ycell-1)*cell_rad; |
| 719 | xreal = xcon+xoff1+celldia_x*(xcell-1); |
| 720 | yreal = ycon+yoff+celldia_y*(ycell-1); |
| 721 | } |
| 722 | |
| 723 | if (smnumber>8 && smnumber<=17) |
| 724 | { |
| 725 | xcon = xcorner[smnumber]+xhex2; |
| 726 | ycon = ycorner[smnumber]+yhex2; |
| 727 | xoff2 = celldia_x+(xcell-1)*cell_rad; |
| 728 | xreal = xcon-(xoff2+celldia_x*(ycell-1)); |
| 729 | yreal = ycon+yoff+celldia_y*(xcell-1); |
| 730 | } |
| 731 | |
| 732 | if (smnumber>17) |
| 733 | { |
| 734 | xcon = xcorner[smnumber]+xhex3; |
| 735 | ycon = ycorner[smnumber]+yhex3; |
| 736 | yoff3 = celldia_x * 0.8660254 + cell_rad * 0.57735027; |
| 737 | xreal = xcon+(ycell-xcell)*cell_rad; |
| 738 | yreal = ycon-(yoff3+(xcell+ycell-2)*celldia_y); |
| 739 | } |
| 740 | |
| 741 | xpos = xreal; |
| 742 | ypos = yreal; |
| 743 | } |
| 744 | |
| 745 | void AliPMDClustering::cell_pos(Int_t isup, Int_t j, int k, Float_t &xp, Float_t &yp){ |
| 746 | |
| 747 | /* |
| 748 | This converts PMD cluster or CELL coordinates |
| 749 | to Global coordinates. |
| 750 | Written by Prof. S.C. Phatak |
| 751 | */ |
| 752 | |
| 753 | Int_t i; |
| 754 | Float_t celldia = 0.5; |
| 755 | const Float_t pi = 3.14159; |
| 756 | const double sqrth=0.8660254; // sqrth = sqrt(3.)/2. |
| 757 | /* |
| 758 | isup --> supermodule no ( 0 - 26 ) |
| 759 | idet --> detector ( pmd or cpv : not required now ) |
| 760 | j --> xpad ( goes from 1 to 72 ) |
| 761 | k --> ypad ( goes from 1 to 72 ) |
| 762 | xp --> global x coordinate |
| 763 | yp --> global y coordinate |
| 764 | |
| 765 | (xp0,yp0) corner positions of all supermodules in global |
| 766 | coordinate system. That is the origin |
| 767 | of the local ( supermodule ) coordinate system. |
| 768 | */ |
| 769 | |
| 770 | Float_t xp0[27] = |
| 771 | { |
| 772 | -17.9084, 18.2166, 54.3416, -35.9709, 0.154144, |
| 773 | 36.2791, -54.0334, -17.9084, 18.2166, 36.7791, |
| 774 | 18.7166, 0.654194, 72.9041, 54.8416, 36.7792, |
| 775 | 109.029, 90.9666, 72.9042, -18.8708, -36.9334, |
| 776 | -54.996, -36.9332, -54.9958, -73.0584, -54.9956, |
| 777 | -73.0582, -91.1208 |
| 778 | }; |
| 779 | |
| 780 | Float_t yp0[27] = |
| 781 | { |
| 782 | -32.1395, -32.1395, -32.1395, -63.4247, -63.4247, |
| 783 | -63.4247, -94.7098, -94.7098, -94.7098, 0.545689, |
| 784 | 31.8309, 63.1161, 0.545632, 31.8308, 63.116, |
| 785 | 0.545573, 31.8308, 63.116, 31.5737, 0.288616, |
| 786 | -30.9965, 62.859, 31.5738, 0.288733, 94.1442, |
| 787 | 62.8591, 31.574 |
| 788 | }; |
| 789 | |
| 790 | /* |
| 791 | angles of rotation for three sets of supermodules |
| 792 | The angle is same for first nine, next nine and last nine |
| 793 | supermodules |
| 794 | */ |
| 795 | |
| 796 | Float_t th[3] = {0., -2.*pi/3., 2.*pi/3.}; |
| 797 | Float_t xr, yr, xinit, yinit, cs, sn; |
| 798 | |
| 799 | /* |
| 800 | xinit and yinit are coordinates of the cell in local coordinate system |
| 801 | */ |
| 802 | |
| 803 | xinit = (j)*celldia+(k)/2.*celldia; |
| 804 | yinit = sqrth*(k)/2.; |
| 805 | i=isup/9; |
| 806 | cs=cos(th[i]); |
| 807 | sn=sin(th[i]); |
| 808 | // |
| 809 | // rotate first |
| 810 | // |
| 811 | xr=cs*xinit+sn*yinit; |
| 812 | yr=-sn*xinit+cs*yinit; |
| 813 | // |
| 814 | // then translate |
| 815 | // |
| 816 | xp=xr+xp0[isup]; |
| 817 | yp=yr+yp0[isup]; |
| 818 | |
| 819 | } |
| 820 | void AliPMDClustering::SetMessage(Int_t imessage) |
| 821 | { |
| 822 | fMessage = imessage; |
| 823 | } |
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