Please see the below image for examples of what I would like to do. On the left is the hand-drawn path and on the right is what I would like the result to be.
Essentially, I would like freehand drawings to be totally constrained to:
- A set grid (larger than the brush width)
- Straight lines of 0, 45 and 90 degrees only.
- Sections of curves that begin and terminate at 0, 45 and 90 degrees only and follow a perfectly round path (not oblong in any way).
Maybe you can use the smart guides and drawing without having to press SHIFT.
I made a very simple video showing you how to draw one of these symbols, video in MOV with only 401KB:
I hope that helps you.