message: consider grid spacing when specifying slices in .osp files
diff: @@ -84,7 +84,7 @@ namespace ospray {
  // scale 4th component of slices by the dimension of the volume
  // (input value is on [0,1]), and add to scene
  for (auto &slice : slices)
  - slice.w *= dimensions.x;
  + slice.w *= (dimensions * gridSpacing).x;
  auto slices_node = createNode("slices", "Slices");
  