1. A method performed by a data processing system comprising: slicing a mesh of one or more polygons in an image of a geometry into slices; applying graduated transparency to the slices to generate a presentation, the application of the graduated transparency causing rendering within the presentation of: a focal region, including a first plurality of the slices, having a level of transparency; and a shoulder region, including a second plurality of the slices, that at least partially surrounds the focal region, the slices of the second plurality having a transparency that decreases with lessening depth from the level of transparency of the focal region to that of the image surrounding the shoulder region; and enabling display of the presentation.