Changes for 2.8x to use EvaluationContext caused some confusion - Would use scene layer passed from snap context. - Would generate duplis from Main eval context. - Would take context argument and use it to create another eval context. Adding context args all over and filling in a new eval-context for every ray-cast test isn't ideal either. Remove the context argument since the purpose of SnapObjectContext is to avoid this kind of confusion. Store the EvaluationContext once and re-use.