Re: Drawing strings at 20fps
Re: Drawing strings at 20fps
- Subject: Re: Drawing strings at 20fps
- From: Douglas Davidson <email@hidden>
- Date: Thu, 22 Jul 2004 13:02:24 -0700
On Jul 21, 2004, at 6:33 PM, Jules Bonin-Ducharme wrote:
I get a really slow result. Things are not updated smoothly
especially when
my app is full screen.
How would I go about drawing what is essentially something that looks
like a
spreadsheet with changing values at 20fps?
Generally speaking it is necessary to sample to find out what the
bottleneck really is. You don't say how you are drawing the strings,
and the results can vary greatly depending on the details of what is
being drawn and how. However, here is one possibility that might
improve matters: create a text storage/layout manager/text container
combination containing the numbers from 0 to 127, once each, each on a
separate line. Adapt the code in the CircleView or Worm examples to
draw the appropriate range of glyphs to the appropriate location as
needed. If that seems too complicated, you could just create 128
different images and draw the numbers from 0 to 127 into them, then
draw the images as needed into your view; however, the CircleView
technique should have similar performance characteristics and use less
memory.
Douglas Davidson
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