Refine search of Splines

[pablo.odriozola]

Hi there

I am having problems with the following section of my code

  (sssetfirst nil (ssget "_X" '((0 . "SPLINE"))))
  (c:flatten)

(c:flatten) refers to the FLATTEN command from the Express Tools.

My goal is to convert the Splines into Polylines, but the FLATTEN command seems to not work with closed Splines.

How can I refine the ssget to exclude all closed Splines from the selection?

Thanks!

[ВeekeeCZ]

Try this expression

(progn (sssetfirst nil (ssget "_X" '((0 . "SPLINE")))) (vla-sendcommand (vla-get-activedocument (vlax-get-acad-object)) "flatten\ry\r"))

This should exclude all closed splines (not sure that is your issue)

(ssget "_X" '((0 . "SPLINE") (-4 . "<NOT") (-4 . "&") (70 . 1) (-4 . "NOT>")))

[CADaSchtroumpf]

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@pablo.odriozola  a écrit :

How can I refine the ssget to exclude all closed Splines from the selection?

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With a filter on the Bit 70

(sssetfirst nil (ssget "_X" '((0 . "SPLINE") (-4 . "<NOT") (-4 . "&") (70 . 1) (-4 . "NOT>"))))

[Sea-Haven]

I got (70 . 1065) for a closed spline and 1064 for open still works as its not 1. 

[CADaSchtroumpf]

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@Sea-Haven  a écrit :

I got (70 . 1065) for a closed spline and 1064 for open still works as its not 1. 

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Did you notice the use of (-4 . "&"): Bitwise AND? LeeMac gives the equivalence and example HERE  or Autocad Help
You can also see all the full 70 bit spline definitions given by phanaem HERE