Drawing a line code

[Joel]

On Sunday, 6 November 2022 at 11:40:40 UTC, claptrap wrote:
> On Sunday, 6 November 2022 at 11:22:26 UTC, Joel wrote:
>> I found some code on the net but haven't been able to get it 
>> working properly. I trying to draw with mouse (any direction).
>
> this is the classic integer line drawing algorithm...
>
> https://en.wikipedia.org/wiki/Bresenham%27s_line_algorithm#Algorithm_for_integer_arithmetic
>
> or you could use this...
>
> https://github.com/cerjones/dg2d

The algorithm is too hard for me to work out and dg2d doesn't 
help either. I want my code fixed up so that works from any two 
points.