- From: Anne van Kesteren <fora@annevankesteren.nl>
- Date: Tue, 09 May 2006 10:26:27 +0200
Quoting Vladimir Vukicevic <vladimirv at gmail.com>:
>> I agree that they shouldn't be affected by the CTM, but I disagree that
>> they should be integers. e.g. in cases like:
>>
>> HTML CSS
>> <canvas height=1 width=1> canvas { height: 100%; width: 100%; }
>> </canvas>
>>
>> ...where the JS then uses the coordinate space 0..1,0..1 the author might
>> want to grab the top corner by grabbing the 0,0,0.25,0.25 rect.
>
> So, I really don't like this -- we need to nail down space the
> getPixels/setPixels coordinates should be in. I still think that they
> should always be in the canvas space, no matter how many pixels they
> refer to in the rendered content or in the device space. Note that in
> your example, the canvas can still be a 1x1 pixel canvas (and, I
> believe, will be in all current implementations) -- that one pixel
> will just cover the entire page.
That is what Ian is saying. He's saying it's a 1x1 pixel canvas just
that within that 1x1 pixel there could be different subpixels with
different colors you could try to get using floating points instead of
integers.
--
Anne van Kesteren
<http://annevankesteren.nl/>
Received on Tuesday, 9 May 2006 01:26:27 UTC