Heaven/TQA Posted August 22, 2012 Share Posted August 22, 2012 Tezz... I only can remember 80x rotozoomer? Quote Link to comment Share on other sites More sharing options...
Tezz Posted August 22, 2012 Share Posted August 22, 2012 (edited) c64 Edge of disgrace demo: Booze Design 2008 http://www.youtube.com/watch?v=8kJz_XfbxX0#t=10m43s A8 Asskicker demo: Shadows 1996 http://www.youtube.com/watch?v=bEh48llWmyY#t=0m11s ugh, media tag is not working? Edited August 22, 2012 by Tezz Quote Link to comment Share on other sites More sharing options...
Tezz Posted January 19, 2013 Share Posted January 19, 2013 Bringing back this thread from last year... What I meant to refer to at the time was the c64 flexible pixel positioning technique which iirc was first done by Crest & Oxyron in "Coma Job" http://www.youtube.com/watch?v=05viU6P6cIk Quote Link to comment Share on other sites More sharing options...
+JAC! Posted January 21, 2013 Share Posted January 21, 2013 @tezz: Which part of this do you mean excatly? The x-strechting? (y-streching is easy on C64, not like on Atari but it's "ok") Quote Link to comment Share on other sites More sharing options...
Tezz Posted January 21, 2013 Share Posted January 21, 2013 (edited) @tezz: Which part of this do you mean excatly? The x-strechting? (y-streching is easy on C64, not like on Atari but it's "ok") Yes, the X and Y stretching which enables full screen zoom effects. such as this example from the c64 Edge of disgrace demo.. * EDIT.. adding time code to the link doesn't work here, jump to 10m 35s http://www.youtube.com/watch?v=bATkvEQt8ck&t=10m35s I assume it's done via FPP? From wiki> FPP (Flexible Pixel Positioning), basically a variation of the FLI mode, allows the placement of any line of a character-based graphic at any one y-position, allowing for effects like x-rotating logos, barrel-like effects or smooth stretching and waving over the whole screen. Edited January 21, 2013 by Tezz Quote Link to comment Share on other sites More sharing options...
+JAC! Posted January 21, 2013 Share Posted January 21, 2013 (edited) Using FPP you would not have enough memory in 64k to represent all possible scaled lines. No, this is much cooler. Only a simple Y streching is done in hardware. The X-movement and zoom are purely done by copying the correct character pattern (within one charset) to the screen memory (in a cyclic way/bounded box). Multiple charsets are used to get all the graphics data in Here I have disabled the screen memory copying for the right part of the screen. The REAL challenge for me in this effect to get all zoom stages of the graphic computed in a way that it look soooo smooth. Edited January 21, 2013 by JAC! Quote Link to comment Share on other sites More sharing options...
Tezz Posted January 21, 2013 Share Posted January 21, 2013 very cool so we could possibly code similar for the A8 Quote Link to comment Share on other sites More sharing options...
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