Jacques Lucke
7ae78733ef
Using the diagonal has the benefit, that the adaptive voxel size changes when the bounding box changes its shape in any way. Having a changing voxel size looks bad when rendering an animation, therefore one should usually use a fixed voxel size when rendering an animated volume. This becomes apparent earlier, when the adaptive voxel size changes when the bounding box changes in any way. Otherwise this can easily go unnoticed when rendering only a few frames of an animated volume.