Calculate the deltaEta,deltaPhi directly wrt to the crossed layer
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Calculate the deltaEta deltaPhi with respect to the crossed layered. Mainly use etaSample,phiSample rather than etaBE , phiBE. This should be the same except in some cases in the crack
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Avoid a few insert for the layers to cross . This could have been done const ideally but the interface of the helper methods does not allow this.
Edited by Christos Anastopoulos