public void When_prepare_computations_with_xs(string id, string rayId, string xs)
{
var i = intersection[id].Value;
var ixs = intersections[xs];
var r = ray[rayId];
var comps = IntersectionTest.prepareComputations(r, i, ixs);
hit[ComputationsId] = comps.hit;
}
public void When_prepare_computations_with_xs(int index, string rayId, string xs)
{
var ixs = intersections[xs];
var i = ixs[index];
var r = ray[rayId];
var comps = IntersectionTest.prepareComputations(r, i, ixs);
hit[ComputationsId] = comps.hit;
refractiveIndex["n1"] = comps.refractiveIndexEntering;
refractiveIndex["n2"] = comps.refractiveIndexExiting;
}