Movement against float.init being nan

[IGotD-]

On Sunday, 21 August 2022 at 03:26:55 UTC, Walter Bright wrote:
>
> I find this surprising. My experience with floating point 
> coordinates is you can never quite get the pixels aligned, due 
> to rounding problems.

That's the whole point. In graphics and especially 3D graphics 
use floating point in order to achieve sub pixel accuracy. That 
means it uses the fractional part to draw more accurate lines for 
example. It can be used for anti antialiasing calculations and so 
on. Without subpixel accuracy we would experience more "steppy" 
movement in 3D games for example. This can be observed in early 
3D games which only used integer calculations.