We closed this forum 18 June 2010. It has served us well since 2005 as the ALPHA forum did before it from 2002 to 2005. New discussions are ongoing at the new URL http://forum.processing.org. You'll need to sign up and get a new user account. We're sorry about that inconvenience, but we think it's better in the long run. The content on this forum will remain online.
Index › Programming Questions & Help › Syntax Questions › animation against a background
‹ Previous Topic | Next Topic ›
Page Index Toggle Pages: 1
animation against a background (Read 837 times)
jimgiles
animation against a background
Jan 11th, 2010, 1:37pm  
I'm working on my first Processing project and would really appreciate a bit of advice about how best to make an animated circle move against a static background (a grid of lines). Shall I redraw the background and circle -- i.e. the whole screen -- in every frame? It seems strange to redraw the whole background when only the area around the circle needs updating, but I've been trying to update that small area only and it turns out to quite complicated to do so.
Back to top
 
 
Cedric
Re: animation against a background
Reply #1 - Jan 11th, 2010, 1:44pm  
no, its absolutely ok, to redraw the whole background everyframe. thats actually how you do it.
Back to top
 
... twitter.com/CedricKiefer
WWW CedricKiefer 9570393 CedricKiefer  
antiplastik
Re: animation against a background
Reply #2 - Jan 11th, 2010, 1:49pm  
Quote:
Shall I redraw the background and circle -- i.e. the whole screen -- in every frame


Definitely. This is the way to go. There's no harm clearing and redrawing everything in every frame.

(nootropic wrote a library to use layers, if you feel more comfortable with layering : http://processing.org/discourse/yabb2/num_1259116487_.html
Back to top
 
WWW  
jimgiles
Re: animation against a background
Reply #3 - Jan 12th, 2010, 6:12am  
Cedric & antiplastik -- thanks, i'll go for that approach
Back to top
 
 
Page Index Toggle Pages: 1
‹ Previous Topic | Next Topic ›