Lisp giving different result when re-run compared to first

[mhan0017]

Hi,

I have written the following lisp to draw some circles and points at a set offset from the middle of two selected points. Two points are offset 18mm from the line, the other two offset 190mm. However when i run the lisp the first time there is no 18mm offset (but there is the 190mm offset) then when it is re-run immediately it works as intended by drawing all 4 objects with the correct offset. Weird how it half works the first time, then completely works the second time.

Not sure if there is something in how the code is written or some sort of bug elsewhere

Any assistance would be appreciated!

[komondormrex]

hi,

this comparison will never give true

(and
           (> checklength 0.654)
           (< checklength 0.674)
)

 also i would clear snap in drawing command with "_non" like this

(command "._point" "_non" bolt4)
(command "._circle" "_non" bolt1 0.018)

[komondormrex]

sorry for that phase for comparison(

0.654 /= 0.674

[ВeekeeCZ · Accepted solution]

In such cases, running OSNAPs are almost always the culprit.

See the history of how to fix the issue - there are 3 ways basically: OSNAPCOORD / OSMODE / NONE