×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

Spline turns into flat segmented line

Spline turns into flat segmented line

Spline turns into flat segmented line

(OP)
Howdie.
I have a datum curve I imported from an IGES file and it imported correctly as a smooth spline.  But if I right-click it in the tree and select "Edit Definition", and bring up the editable .ibl file it got translated into, even if I don't edit anything and just resave it, it turns into a flat segmented curve.  How can I prevent this from happening, as I need to edit the points data without destroying the smooth curve?

I am using W4

Thanks for any replies!

RE: Spline turns into flat segmented line

(OP)
I noticed that when I open the text file in ProE to edit it, it breaks the spline up into individual segments.  If I edit the file so that it is just a continuous sequence of points, removing each of the extra "Begin curve ! <x>" lines, all the indexes and any duplicated points, I can get my smooth spline back, but even though the coords are exactly the same, it does not match the original curve when regenerated (the nodes don't even line up).  You don't notice it unless you zoom in, but you don't have to zoom in that far to notice the difference.  That kind of inaccuracy is going to kill an awful lot of regens.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources