TransformCache.icc

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
#ifndef ActsGeoUtils_TransformCache_ICC
#define ActsGeoUtils_TransformCache_ICC
 
#include <CxxUtils/inline_hints.h>
 
namespace ActsTrk {
    ATH_FLATTEN
    inline const Amg::Transform3D& TransformCache::getTransform(const ActsTrk::DetectorAlignStore* alignStore) const {    
        /// Valid alignment store is given -> Take the transformation from the cache there
        if (alignStore) {
            const Amg::Transform3D* cache = alignStore->trackingAlignment->getTransform(m_clientNo);
            if (cache) return *cache;
            const Amg::Transform3D& trf{alignStore->trackingAlignment->setTransform(m_clientNo, fetchTransform(alignStore))};
            /// If an external alignment store is presented release the nominal transformation
            releaseNominalCache();
            return trf;
        }
        /// Fall back solution to go onto the nominal cache    
        if (!m_nomCache) {
            std::unique_lock guard{m_mutex};
            m_nomCache.set(std::make_unique<Amg::Transform3D>(fetchTransform(alignStore)));
            return (*m_nomCache);
        }
        std::shared_lock guard{m_mutex};
        return (*m_nomCache);
    }
    inline IdentifierHash TransformCache::hash() const { return m_hash; }
#ifndef SIMULATIONBASE
    ATH_FLATTEN
    inline const Amg::Transform3D& TransformCache::transform(const Acts::GeometryContext& anygctx) const {
        const ActsGeometryContext* gctx = anygctx.get<const ActsGeometryContext*>();    
        // unpack the alignment store from the context
        return getTransform(gctx->getStore(m_type).get());
 
    }
#endif
 
 
template<typename CachingDetectorEle>
   TransformCacheDetEle<CachingDetectorEle>::TransformCacheDetEle(const IdentifierHash& hash,
                                                      const CachingDetectorEle* parentEle):
        TransformCache(hash, parentEle->detectorType()),
        m_parent{parentEle} {}
template<typename CachingDetectorEle>
    const IDetectorElement* TransformCacheDetEle<CachingDetectorEle>::parent()  const {
        return m_parent;
    }
}
#endif