Initial feedback for std.experimental.image

[Vladimir Panteleev via Digitalmars-d]

On Tuesday, 7 July 2015 at 03:39:00 UTC, Rikki Cattermole wrote:
> I've been sold on the unsigned vs signed type issue for and 
> only for the x and y coordinates.

The first version of ae.utils.graphics had unsigned coordinates. 
As I found out, this was a mistake.

A rule of thumb I discovered is that any numbers you may want to 
subtract, you should use signed types. Otherwise, operations such 
as drawing an arc with its center point off-canvas (with negative 
coordinates) becomes unreasonably complicated.