Thomas Harte wrote: > Oh, but it did also occur to me that I could create a convex-sector > and vertical portal Wolfenstein-type thing for just an extra couple of > multiplies per vertex. > .... > Then maybe use coherence stuff to produce a filled display, > so you're mostly just extending or shrinking already filled areas of > the screen frame-to-frame rather than having to carry the costs of a > full redraw. Which I think you said was what Chrome was up to?
Yes, Chrome was just going to extend or shrink what was already drawn there, and redraw complete strips only when there had been a sprite drawn over the top. It was something I was thinking of - your maths could be used for that sort of style of 3D engine, and sounds like you have all the bases covered already! Essentially, just hold a map with the 2D wall positions, your maths code would then calculate which walls were visible and where, then just draw the walls - either vector or filled. Colin ===== Quazar : Hardware, Software, Spares and Repairs for the SAM Coupe 1995-2008 - Celebrating 14 Years of developing for the SAM Coupe Website: http://www.samcoupe.com/
