Am 22.08.2011 10:14, schrieb Invisible:
> On 20/08/2011 03:43 PM, Darren New wrote:
>> On 8/20/2011 4:11, Warp wrote:
>>> Drawing an accurate antialiased line (of certain width) is not a trivial
>>> problem. Basically for each pixel you need to calculate how much of
>>> it is
>>> covered by the line. Doing this accurately with integer math only can be
>>> complicated.
>>
>> I am not sure you can do it accurately with integer math at all, given
>> that there's a "portion of a pixel" involved in there somewhere. At best
>> you'd be working in scaled fixed-point.
>
> You realise that all of the quantities involved are rational, right? And
> that a rational number is just two integers?

But in the end you want to paint a pixel a particular color, which is a 
/single/ integer. That's where the precision you might be able to keep 
with rational representation ultimately breaks down.

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