FPGATrackSimMultiRegionConfig.py

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# Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
from AthenaConfiguration.ComponentAccumulator import ComponentAccumulator
from AthenaConfiguration.ComponentFactory import CompFactory
 
 
def FPGATrackSimMultiRegionTrackingCfg(flags):
    acc = ComponentAccumulator()
    acc.merge(FPGATrackSimRunFirstStageOnManyRegions(flags))
        
    if flags.Trigger.FPGATrackSim.Hough.secondStage:
        acc.merge(FPGATrackSimRunSecondStageOnManyRegions(flags))    
    acc.merge(FPGATrackSimRegionMergeringAlgCfg(flags))
    
    return acc
    
    
def FPGATrackSimRunFirstStageOnManyRegions(flags):
    acc = ComponentAccumulator()
    from FPGATrackSimConfTools.FPGATrackSimHelperFunctions import convertRegionsExpressionToArray
    for region in convertRegionsExpressionToArray(flags.Trigger.FPGATrackSim.regionList):
        flags1st = flags.clone()
        flags1st.Trigger.FPGATrackSim.region=region
        flags1st = flags1st.cloneAndReplace("Trigger.FPGATrackSim.ActiveConfig", "Trigger.FPGATrackSim." + flags.Trigger.FPGATrackSim.algoTag,keepOriginal=True)
        flags1st.lock()
        
        from FPGATrackSimConfTools.FPGATrackSimAnalysisConfig import FPGATrackSimLogicalHitsProcessAlgCfg
        acc.merge(FPGATrackSimLogicalHitsProcessAlgCfg(flags1st,
                  **{'FPGATrackSimHitKey_1st': f"FPGAHits_1st_reg{region}",
                     'FPGATrackSimHitKey_2nd': f"FPGAHits_2nd_reg{region}",
                     'FPGATrackSimHitFiltered1stKey': f"FPGAHitsFiltered_1st_reg{region}",
                     'FPGATrackSimRoad1stKey': f"FPGARoads_1st_reg{region}",
                     'FPGATrackSimTrack1stKey': f"FPGATracks_1st_reg{region}",
                     'FPGATrackSimSpacePoints1stKey': f"FPGASpacePoints_1st_reg{region}"}))
    return acc
    
def FPGATrackSimRunSecondStageOnManyRegions(flags):
    acc = ComponentAccumulator()
    from FPGATrackSimConfTools.FPGATrackSimHelperFunctions import convertRegionsExpressionToArray
    for region in convertRegionsExpressionToArray(flags.Trigger.FPGATrackSim.regionList):
        flags2nd = flags.clone()
        flags2nd.Trigger.FPGATrackSim.region=region
        flags2nd = flags2nd.cloneAndReplace("Trigger.FPGATrackSim.ActiveConfig", "Trigger.FPGATrackSim." + flags.Trigger.FPGATrackSim.algoTag,keepOriginal=True)
        flags2nd.lock()
        
        from FPGATrackSimConfTools import FPGATrackSimSecondStageConfig
        acc.merge(FPGATrackSimSecondStageConfig.FPGATrackSimSecondStageAlgCfg(flags2nd,
                  **{'FPGATrackSimHitKey': f"FPGAHits_2nd_reg{region}",
                     'FPGATrackSimTrack1stKey': f"FPGATracks_1st_reg{region}",
                     'FPGATrackSimRoad2ndKey': f"FPGARoads_2nd_reg{region}",
                     'FPGATrackSimTrack2ndKey': f"FPGATracks_2nd_reg{region}"}))
    return acc
 
def FPGATrackSimRunLayerStudyOnManyRegions(flags):
    acc = ComponentAccumulator()
    from FPGATrackSimConfTools.FPGATrackSimLayerStudyConfig import FPGATrackSimLayerStudyCfg 
    from FPGATrackSimConfTools.FPGATrackSimHelperFunctions import convertRegionsExpressionToArray
    for region in convertRegionsExpressionToArray(flags.Trigger.FPGATrackSim.regionList):
        flagsLS = flags.clone()
        flagsLS.Trigger.FPGATrackSim.region = region
        flagsLS.lock()
        acc.merge(FPGATrackSimLayerStudyCfg(flagsLS))
 
    return acc
 
 
def FPGATrackSimRegionMergeringAlgCfg(flagsIn,name="FPGATrackSimRegionMergingAlg",**kwargs):
    acc = ComponentAccumulator()
    flags = flagsIn.cloneAndReplace("Trigger.FPGATrackSim.ActiveConfig", "Trigger.FPGATrackSim." + flagsIn.Trigger.FPGATrackSim.algoTag,keepOriginal=False)
    stage="2nd" if flags.Trigger.FPGATrackSim.ActiveConfig.secondStage else "1st"
    from FPGATrackSimConfTools.FPGATrackSimHelperFunctions import convertRegionsExpressionToArray
    regionList = convertRegionsExpressionToArray(flags.Trigger.FPGATrackSim.regionList)
    TrackCollections = [f"FPGATracks_{stage}_reg{region}" for region in regionList]
    RoadCollections = [f"FPGARoads_{stage}_reg{region}" for region in regionList]
    
    kwargs.setdefault('FPGATrackSimTrackCollections',TrackCollections)
    kwargs.setdefault('FPGATrackSimRoadCollections',RoadCollections)
    
    regionMerging = CompFactory.FPGATrackSim.FPGATrackSimRegionMergingAlg(name,**kwargs)
    regionMerging.doOverlapRemoval = flags.Trigger.FPGATrackSim.doOverlapRemovalBetweenRegions
 
 
    regionMerging.useRoads = False # not flags.Trigger.FPGATrackSim.tracking (maybe we'll never actually use roads at this point)
 
    if stage == "2nd":
        from FPGATrackSimConfTools.FPGATrackSimSecondStageConfig import FPGATrackSimOverlapRemovalToolCfg
        regionMerging.OverlapRemovalTool = acc.getPrimaryAndMerge(FPGATrackSimOverlapRemovalToolCfg(flags,name="OLRMerge"))
    elif stage == "1st":
        from FPGATrackSimConfTools.FPGATrackSimAnalysisConfig import FPGATrackSimOverlapRemovalToolCfg
        regionMerging.OverlapRemovalTool = acc.getPrimaryAndMerge(FPGATrackSimOverlapRemovalToolCfg(flags,name="OLRMerge"))
    
    
    regionMerging.OverlapRemovalTool.MinChi2 = 1e15
        
    acc.addEventAlgo(regionMerging)
    return acc