Le 28 janv. 2010 à 21:37, David Duncan a écrit :

> On Jan 28, 2010, at 12:29 PM, vincent habchi wrote:
> 
>> You're right. Up to that point, I'm quite satisfied with generating the 
>> contents directly out of the delegate, but, in a sense, your approach is 
>> more unified, since the same layer could then display either vector (drawn 
>> out of the database) or raster contents.
> 
> The content you are drawing is raster content, it doesn't matter that you are 
> using -drawLayer:inContext: or assigning an image to the contents field, in 
> either case you are getting raster content.

Of course. But then, admitting I do indeed draw offscreen and then load 
contents in the CALayer, on what object shall I draw? A CGLayer? Something else?

> If you mean to see the drawing as it progresses, you will need to manage that 
> yourself. You would likely want to completely overhaul your rendering process 
> to do it however, as using a small fixed number of tiles would make this very 
> slow as you would end up needing to respecify content you've already 
> specified (basically draw-upload-draw-upload).

The trick would obviously be drawing offscreen and then fire a timer each 
second or so to upload content until the full drawing is done. Why not?

Have a very nice day, our is over.
Cheers
Vincent_______________________________________________

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