Spline

Dear Alls,
Is it true command in Lisp
(command ".spline (list x1 y1)(list x2 y2)(list x3 y3) "" "c" "")
I am not yet success to run it.
Best regards
Ade Suharna

 

Is it just that it's missing the closing double-quote (") after the .spline?

Kent Cooper, AIA

...

 

Another thing: the "" after the last point (list) and before the "c"
shouldn't be there. It ends the spline, and the prompt is then for the
starting tangent direction, so the "c" isn't an appropriate response.

Haven't tested it, but see whether this works:
(command ".spline" (list x1 y1)(list x2 y2)(list x3 y3) "c" "")

Kent Cooper, AIA

...

 

Haven't tested it, but see whether this works:

Hi all
Here is something I use to draw splines (found on the Web)

(command "_SPLINE")
(mapcar 'command ptlist) ; the ptlist must be the fitpoints then
(command "" "" "")

Works fine, but here is the question (very important, if somebody can
help -pleeeese!!!)

above code draws spline from supplied list of coordinates - ptlist,
but resulting spline is non-planar, even if the list is of the form
((x1 y1) (x2 y2) ....). I desperately need a planar spline (so I can
use offset).
Can something be done to do so?

 

Hi Kent ,thanks a lot for your reply