I do not understand.
If you just want to display some shapes and images, you don't need to
draw into a bitmap, you just need to draw in your view.
What do you mean by "creating a context". All views already have a
context where you can draw whatever you want.
Le 8 oct. 08 à 17:43, Christian Giordano a écrit :
At the moment I'm starting creating a context and drawing basic
shapes, is there another way to draw basic shapes on a bitmap?
Cheers, chr
On Wed, Oct 8, 2008 at 4:32 PM, Christian Giordano
<[EMAIL PROTECTED]> wrote:
I started questioning myself if maybe I need something else, but
clearly I have no idea which other options I have. Maybe using OpenGL
(ES)? The ultimate aim is of course to renderer the result of all the
manipulation, at the moment this happens in a UIView.drawRect.
Cheers, chr
On Wed, Oct 8, 2008 at 4:25 PM, Jean-Daniel Dupas
<[EMAIL PROTECTED]> wrote:
CGImage does not provide an efficient way to update , but maybe
CGImage is
not what you want.
Where your image come from, why do you need a CGImageRef and what
are you
trying to do with it ?
Le 8 oct. 08 à 17:01, Christian Giordano a écrit :
I'm modifying frequently the pixels of the images, the way I
found is
creating a copy of the data
(CGDataProviderCopyData(CGImageGetDataProvider(image));) modify the
pixels and then create a new one. I'm facing performance issues
and I
fear that all this allocating and deallocating is not helping. Is
there a way I could have access and modify the pixels of a CGImage
without copying them?
Thanks, chr
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