CompuServe Messages

So you want to know the number of shared, smoothed vertices… Just the number? Wouldn't it be more important to know which ones are shared, if you were adjusting your geometry? From what I've seen, this is one of those issues that each 3D engine handles differently. Sometimes the presence or absence of vertex normals bubbles up to the file format, where I see it in my work with file translators. Sometimes the information such as vertex connectivity is implicit and re-calculated as the engine renders.