1    	#include "StVirtualEventFilter.h"
2    	
3    	//////////////////////////////////////////////////////////////////////////
4    	//                                                                      //
5    	// StVirtualEventFilter virtual base class is to create the variuous    //
6    	// user-defined filters                                                 //
7    	//                                                                      //
8    	// $Id: StVirtualEventFilter.cxx,v 1.11 2000/03/24 20:35:21 fine Exp $   //
9    	//                                                                      //
10   	// This class defines the intreface to define                           //
11   	// a graphics attribute:                                                //
12   	//   for example: size and style. The value the Channel methods return  //
13   	//                could be used a color index for grapgics filtering    //
14   	//                                                                      //
15   	// and a trivial selection as well                                      //
16   	//  to reply whether the object does satisfy some user                  //
17   	//  defined conditions.                                                 //
18   	//  For that the return value = 0 means the event supplied              //
19   	//  did not pass the filter and should not be drawn at all              //
20   	//                                                                      //
21   	//     Channel       Parameters                                         //
22   	//    -------------  -----------------------------                      //
23   	// 1. StGlobalTrack  *globTrack                                         //
24   	// 2. StObjArray     *hitCollection                                     //
25   	// 3. TTableSorter *tableObject,Int_t index                           //
26   	// 4. StVertex       *vertexObject                                      //
27   	// 5. TTable       *tableObject, Int_t rowNumber                      //
28   	//                                                                      //
29   	// User should derive his own class and overload the "Channel" methods  //
30   	// with the signature those fit his/her current needs                   //
31   	//                                                                      //
32   	// Submit any problem with this code via begin_html <A HREF="http://www.star.bnl.gov/STARAFS/comp/sofi/bugs/send-pr.html"><B><I>"STAR Problem Report Form"</I></B></A> end_html
33   	//                                                                      //
34   	//////////////////////////////////////////////////////////////////////////
35   	
36   	ClassImp(StVirtualEventFilter)
37   	//_____________________________________________________________________________
38   	Int_t StVirtualEventFilter::GetFlag(){ return m_ActiveFlag;}
39   	
40   	//_____________________________________________________________________________
41   	Int_t StVirtualEventFilter::Channel(StGlobalTrack *,Size_t &,Style_t &)
42   	{
43   	   static Int_t colorTrack = kRed;
44   	   colorTrack++;
45   	   if (colorTrack > 20) colorTrack = kRed;
46   	   return GetFlag() ? colorTrack : 0 ;
47   	}
48   	//_____________________________________________________________________________
49   	Int_t StVirtualEventFilter::Channel(const StObjArray *,Size_t &,Style_t &)
50   	{return GetFlag()? kYellow : 0 ;}
51   	
52   	//_____________________________________________________________________________
53   	Int_t StVirtualEventFilter::Channel(const TTableSorter *,Int_t index,Size_t &,Style_t &)
54   	{ return GetFlag()? (kGreen+index)%20 : 0 ;}
55   	//_____________________________________________________________________________
56   	Int_t StVirtualEventFilter::Channel(const StVertex *,Size_t &,Style_t &)
57   	{ return GetFlag()? kBlue : 0 ; }
58   	
59   	//_____________________________________________________________________________
60   	Int_t StVirtualEventFilter::Channel(const TTable *,Int_t rowNumber,Size_t &,Style_t &)
61   	{ return GetFlag()? (kGreen+rowNumber)%20 : 0 ;}
62   	
63   	//_____________________________________________________________________________
64   	// $Log: StVirtualEventFilter.cxx,v $
65   	// Revision 1.11  2000/03/24 20:35:21  fine
66   	// adjusted to ROOT 2.24. Doesn't work yet. Under development
67   	//
68   	// Revision 1.10  2000/01/24 21:12:23  fine
69   	// new comments
70   	//
71   	// Revision 1.9  2000/01/24 20:57:22  fine
72   	// new comments
73   	//
74   	// Revision 1.8  2000/01/12 18:07:22  fine
75   	//  cvs symbols have been added and copyright class introduced
76   	//
77   	//_____________________________________________________________________________
78   	
79   	
80