topic Re: Am I going crazy? in Modeling

Am I going crazy?

Anonymous — Thu, 11 Feb 2010 20:05:38 GMT

I've been having a problem where arcs are rotating on me when I'm not looking!
I'm doing a lot of 2D drafting on a traditional house with curved eaves, curved shingle flares, lot of curves in trim, gutters etc.

I keep coming back to parts of the house, only to find that some, but not all of the arcs have rotated around their centers slightly (maybe 10 degrees).
They're not moved up or down the page, the radius has not been changes, and they're each rotated around their own center, not around a common point.

It's not that hard to fix, but it's time-consuming and it keeps happening without any apparent cause or order. Any ideas of what's happening??

Re: Am I going crazy?

Laura Yanoviak — Thu, 11 Feb 2010 20:46:03 GMT

Wow -- that's a new one. Why not join all of your line/arc segments into a polyline (Edit > Reshape > Unify) so it won't happen again?

Re: Am I going crazy?

Laszlo Nagy — Fri, 12 Feb 2010 15:18:43 GMT

Is it possible that your arcs are very far from the Project Origin and this causes the problem?

Re: Am I going crazy?

Anonymous — Fri, 12 Feb 2010 16:27:48 GMT

Thanks for the replies,

I had those lines of trim grouped-hoped that would be enough- I guess I can start turning things into polylines and see if that solves it. It's so random thought that I hate to have to turn everything into a Pline. I've had it happen in a couple of files, so I don't think it's just something with this file.
It doesn't happen that often, so I haven't worried too much, but it's annoying when I print and it doesn't come out right.

That particular screen shot was about 200 feet from the project origin?
Why would distance from the origin cause this kind of shifting?

Re: Am I going crazy?

Erika Epstein — Fri, 12 Feb 2010 18:42:08 GMT

No, 200' is fine.
Why are you drafting instead of modeling?

Re: Am I going crazy?

Laszlo Nagy — Mon, 15 Feb 2010 10:42:55 GMT

catalano wrote:
That particular screen shot was about 200 feet from the project origin?
Why would distance from the origin cause this kind of shifting?

If the project is like hundreds of miles from the Project Origin that might cause accuracy problems. Or it has in the past, I am not sure if it still does in the last versions.
This sometimes occurs with imported DWG files as far as I noticed.