Hidden Line rendering (or Surface Render) performance: What is it?
Hidden Line rendering is somewhat of an intensive process because, unlike most other programs, form·Z will derive the intersection lines between objects. To do this, form·Z actually executes Boolean operations between all intersecting objects in a file. Thus, if you have lots of intersecting objects, this can add considerable time to the rendering. You will probably save time by either executing the Boolean operations in advance (in case you need to generate more than one Hidden Line) or otherwise build or modify the geometry so that it is free from intersections. To see if Intersections are an issue with your file, start the Hidden Line rendering process. The first portion of the progress bar will be for Forming Surfaces, and the second portion will be Resolving Intersections. Compare the number of polygons at the end of each of these and if they are the same, then your file is free from intersections. If the number is a bit larger after Resolving Intersections (which is normal) then
