Hi Kerry, for the example, I'll do that, but off-list and later (I am busy with other things now).
> Actually, 1/24th of a second. Cinema movies play at 24 fps. Right and wrong. Cinema plays at 24 fps but even so 1 frame is displayed for 1/48 second. The rest of the time is used to move the film to the next frame. Actually, if you want to know the whole truth: The film is advanced as quickly as in 1/96 of a second. Any individual cine frame is displayed twice for 1/96 s in each turn, so 1/48 s in total. Why? In cinema an interuption of the light output is inevitable, to allow the film to be advanced. Switching the light bulb is no way of doing it, because of the lamp delay. So a rotating metal disc is used to cut off the light. Same as in movie cameras. In movie cameras however in one turn of the disc you have 1 time for exposing the film and 1 time for advancing the film. In early or simple cameras the time was split 50:50. In recent cameras, the time for exposing was longer than for the film transport. So about 23 % of the disc was metal and 75 % was "hole", so more light could be captured. Also, in movie cameras the ration can be varied, thus allowing for different exposure times with the same frame rate. In cinema a cross is used to artificially increase the frequency of the flickering - to make it less noticeable. The disc in a movie projector has 2 quarters "hole" and 2 quarters metal, but only one quarter of metal is used for film transport. A little off-topic, I admit ;-) -----Ursprungliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Auftrag von Kerry Thompson Gesendet: Mittwoch, 13. August 2003 00:23 An: [EMAIL PROTECTED] Betreff: RE: <lingo-l> animating scaling of sprites > Kerry, I am not a computer hardware specialist, but I am > QUITE sure my theory is correct. It could be. I've never seen the stair stepping you're talking about, though. Do you have an example you could send me? I could play around with the refresh rate on my computer and see what happens. I'm currently at 60 Hz because I have flat-panel displays, and they don't need refreshing as often as a crt. > Ever watched a movie in the > cinema? A scratch in a frame is displayed for 1/48 seconds. Actually, 1/24th of a second. Cinema movies play at 24 fps. In the U.S., TV plays at 30 fps, though it refreshes at 60 Hz. The TV only draws one half of the screen per pass (per Hz). > This problem bothers me quite a while and I am very keen of > getting it solved. Cool. Send me an example and I'll see if I can help track it down. You've got my curiosity piqued now. I'm guessing it's because you have a high frame rate in Director, but I could be wrong. Cordially, Kerry Thompson [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]). Lingo-L is for learning and helping with programming Lingo. Thanks!] [To remove yourself from this list, or to change to digest mode, go to http://www.penworks.com/lingo-l.cgi To post messages to the list, email [EMAIL PROTECTED] (Problems, email [EMAIL PROTECTED]). Lingo-L is for learning and helping with programming Lingo. Thanks!]
