On Tue, May 24, 2011 at 5:32 PM, roger peppe <rogpeppe@gmail.com> wrote:

On 24 May 2011 03:53, Russ Cox <rsc@swtch.com> wrote:
>> I would like to try to get something running which
>> would allow me to draw pic documents in a WYSIWYG style
>> I have a load of rather complex drawings to do.
>
> If you will never have to edit them, whiteboard + digital camera.
>
> Otherwise, I've found that it is always worth the time to
> program the drawings (pic macros, postscript functions,
> metapost, whatever), because then editing them is possible.

out of interest, which of these do you use yourself by preference?
for example for this diagram:

http://2.bp.blogspot.com/_ZnVhQ3NyEx0/S4NfiL9UgZI/AAAAAAAAAB0/mW2hZr-Ay5k/s400/gorace4.png

getting those curves right can't be that easy if you're working
out the parameters manually, and doing the collision avoidance
programmatically can't be too easy either...