[u/mrichter/AliRoot.git] / FMD / AliFMDMap.cxx

/**************************************************************************
 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
 *                                                                        *
 * Author: The ALICE Off-line Project.                                    *
 * Contributors are mentioned in the code where appropriate.              *
 *                                                                        *
 * Permission to use, copy, modify and distribute this software and its   *
 * documentation strictly for non-commercial purposes is hereby granted   *
 * without fee, provided that the above copyright notice appears in all   *
 * copies and that both the copyright notice and this permission notice   *
 * appear in the supporting documentation. The authors make no claims     *
 * about the suitability of this software for any purpose. It is          *
 * provided "as is" without express or implied warranty.                  *
 **************************************************************************/

/* $Id$ */

//____________________________________________________________________
//                                                                          
//
//
#include "AliFMDMap.h"		// ALIFMDMAP_H

//____________________________________________________________________
ClassImp(AliFMDMap);

//____________________________________________________________________
AliFMDMap::AliFMDMap(size_t maxDet, 
		     size_t maxRing, 
		     size_t maxSec, 
		     size_t maxStr)
  : fMaxDetectors(maxDet), 
    fMaxRings(maxRing), 
    fMaxSectors(maxSec), 
    fMaxStrips(maxStr)
{
  // Construct a map
  //
  // Parameters:
  //     maxDet       Maximum # of detectors
  //     maxRinf      Maximum # of rings
  //     maxSec       Maximum # of sectors
  //     maxStr       Maximum # of strips
}


//____________________________________________________________________
size_t 
AliFMDMap::CalcIndex(size_t det, Char_t ring, size_t sec, size_t str) const
{
  // Calculate index into storage from arguments. 
  // 
  // Parameters: 
  //     det       Detector #
  //     ring      Ring ID
  //     sec       Sector # 
  //     str       Strip # 
  //
  // Returns appropriate index into storage 
  //
  size_t ringi = (ring == 'I' ||  ring == 'i' ? 0 : 1);
  size_t idx = 
    (det + fMaxDetectors * (ringi + fMaxRings * (sec + fMaxSectors * str)));
  if (idx >= fMaxDetectors * fMaxRings * fMaxSectors * fMaxStrips) {
    Fatal("CalcIndex", "Index (%d,'%c',%d,%d) out of bounds, "
	  "in particular the %s index", 
	  det, ring, sec, str, 
	  (det >= fMaxDetectors ? "Detector" : 
	   (ringi >= fMaxRings ? "Ring" : 
	    (sec >= fMaxSectors ? "Sector" : "Strip"))));
    return 0;
  }
  return idx;
}


//___________________________________________________________________
//
// EOF
//
Commit	Line	Data
e802be3e	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
	16	/* $Id$ */
	17
	18	//____________________________________________________________________
	19	//
	20	//
	21	//
	22	#include "AliFMDMap.h" // ALIFMDMAP_H
	23
	24	//____________________________________________________________________
	25	ClassImp(AliFMDMap);
	26
	27	//____________________________________________________________________
	28	AliFMDMap::AliFMDMap(size_t maxDet,
	29	size_t maxRing,
	30	size_t maxSec,
	31	size_t maxStr)
	32	: fMaxDetectors(maxDet),
	33	fMaxRings(maxRing),
	34	fMaxSectors(maxSec),
	35	fMaxStrips(maxStr)
	36	{
	37	// Construct a map
	38	//
	39	// Parameters:
	40	// maxDet Maximum # of detectors
	41	// maxRinf Maximum # of rings
	42	// maxSec Maximum # of sectors
	43	// maxStr Maximum # of strips
	44	}
	45
	46
	47	//____________________________________________________________________
	48	size_t
	49	AliFMDMap::CalcIndex(size_t det, Char_t ring, size_t sec, size_t str) const
	50	{
	51	// Calculate index into storage from arguments.
	52	//
	53	// Parameters:
	54	// det Detector #
	55	// ring Ring ID
	56	// sec Sector #
	57	// str Strip #
	58	//
	59	// Returns appropriate index into storage
	60	//
	61	size_t ringi = (ring == 'I' \|\| ring == 'i' ? 0 : 1);
	62	size_t idx =
	63	(det + fMaxDetectors * (ringi + fMaxRings * (sec + fMaxSectors * str)));
	64	if (idx >= fMaxDetectors * fMaxRings * fMaxSectors * fMaxStrips) {
65	Fatal("CalcIndex", "Index (%d,'%c',%d,%d) out of bounds, "
66	"in particular the %s index",
67	det, ring, sec, str,
68	(det >= fMaxDetectors ? "Detector" :
69	(ringi >= fMaxRings ? "Ring" :
70	(sec >= fMaxSectors ? "Sector" : "Strip"))));
71	return 0;
72	}
73	return idx;
74	}
75
76
77	//___________________________________________________________________
78	//
79	// EOF
80	//