3-Point Arc Status Codes

[James Murray]

For example, here's a tombstone shape you might encounter if working on anything arched.

0, 0, 15,
A, 0, 15,
A, B-archHgt, 5100+79, ! start arc
A/2, B, 5200+79, ! point on arc
0, B-archHgt, 5300+15, ! end arc
0, 0, -1

It isn't essential because the shape is possible with centerpoint or tangent methods, but those put the trig on the user.

It would be nice to have sometimes, just as it's sometimes nice to draw 3-point arcs in the graphical environment.

[Rob]

James,

yes, this is a good one... it would greatly simplify arc coding.
So we could have a new status code 5000.

[Anonymous]

I am voting "important" since it would be quite nice to have and seems like it should be fairly easy to implement. Nice suggestion James. I don't mind that GDL has kept my trig skills from falling completely away, but I still prefer to avoid it when possible (often resorting to good old Pythagoras).