topic Re: Straighten Feature Line Curves in Civil 3D Forum

Straighten Feature Line Curves

shortbrandon — Fri, 13 Oct 2023 16:00:05 GMT

I have not been able to find a way to straighten a curved section of a feature line or to add a straight section in the middle of a curved FL. I am aware of the EDITFEATURECURVE>Delete option, but that removes the whole curve instead of making it straight. I am aware of the SmoothFeature>Straighten option, but that straightens the entire FL and not just the curve in question. I can add PIs to the FL but the new sections of the FL are curved. The geometry of my parking lot changed from the green FL to the while PLine, and I can't figure out a way to make the change without starting over on a lot of things. A grading infill was used and the FL has grading objects attached, so breaking it is not an option without redoing all the grading objects. A workaround that will help me edit this particular feature line would be marginally helpful, but I'm really looking for a way to straighten curves which I'm not thinking exists. I'm thinking like PLine grip edits, convert to line, or an equivalent command. This problem has popped up several times and I'm in need of a solution.

Re: Straighten Feature Line Curves

tcorey — Fri, 13 Oct 2023 21:59:17 GMT

All I can think of is to _Explode the object, just once. This will give you a 3d polyline. The curves will look good from a distance, but they are now made of chord segments. From here, I would use the _Pedit command and its Edit Vertex->Straighten function to remove all those chord segments in one step per curve. Put some sort of marker (a circle, maybe) at the BC and EC before you explode the Feature Line. This will help you during Pedit.

Re: Straighten Feature Line Curves

Neilw_05 — Sat, 14 Oct 2023 12:30:28 GMT

Try adding a PI at the ends of the curve, just slightly past the ends, then delete the pi's at the ends of the curve. That should eliminate the curve. You could draw construction circles as snap points to move the new pi's to where the curve ended.

Re: Straighten Feature Line Curves

AllenJessup — Sat, 14 Oct 2023 15:12:08 GMT

For some reason it's the _AECCSMOOTHFEATURE command that give you the Straighten option.

See https://www.youtube.com/watch?v=BYHH4vJ6XRY&t=129s

at about 2 minutes in.

Re: Straighten Feature Line Curves

Joe-Bouza — Sat, 14 Oct 2023 19:04:16 GMT

Not fully understanding but you can draw the tangent>>> trim the curve>>> join

Re: Straighten Feature Line Curves

Neilw_05 — Sun, 15 Oct 2023 01:02:44 GMT

Allen, the _AECSMOOTHFEATURE command removes ALL the curves. Can you make it remove individual curves?

Re: Straighten Feature Line Curves

Neilw_05 — Sun, 15 Oct 2023 01:03:25 GMT

Joe, the OP says the FL has gradings applied. You can't trim a FL that has gradings.

Re: Straighten Feature Line Curves

Joe-Bouza — Mon, 16 Oct 2023 03:24:37 GMT

You make it sound like I read the post 😂😂😂👍

Re: Straighten Feature Line Curves

Joe-Bouza — Mon, 16 Oct 2023 03:24:55 GMT

You make it sound like I read the post 😂😂😂👍

Re: Straighten Feature Line Curves

AllenJessup — Mon, 16 Oct 2023 11:55:40 GMT

@Neilw_05

I was mainly going by Jeff's video. Happened to watch it a couple of weeks ago and remembered there had been a straighten option somewhere. In the video it looks like he's removing individual curves. I don't have any experience with it myself.

Re: Straighten Feature Line Curves

Joe-Bouza — Mon, 16 Oct 2023 12:48:14 GMT

Hi Allen

Pretty sure we have to remove and refdraw

Re: Straighten Feature Line Curves

Joe-Bouza — Mon, 16 Oct 2023 12:51:57 GMT

Just another reason to build with corridor

Re: Straighten Feature Line Curves

shortbrandon — Mon, 16 Oct 2023 13:29:59 GMT

I think Neil got it with the add two PIs and delete two others.

Joe's "didn't read the post" describes the rest of the solutions because they're things I mentioned that aren't what I'm looking for.

Vote on this idea, because that's what I really want. Neil's idea is a workaround. https://forums.autodesk.com/t5/civil-3d-ideas/feature-line-convert-curve-to-line-segment/idi-p/12207624