uint8 bStartPenetrating: 1
Whether the trace started in penetration, i.e. with an initial blocking overlap. In the case of penetration, if PenetrationDepth > 0.f, then it will represent the distance along the Normal vector that will result in minimal contact between the swept shape and the object that was hit. In this case, ImpactNormal will be the normal opposed to movement at that location (ie, Normal may not equal ImpactNormal). ImpactPoint will be the same as Location, since there is no single impact point to report.