Convex or concave polyline

[devitg]

Hi , how it can be determinate if the sample polylines are   convex or concave .? 

I need to put a Convex or Concave text at each one , at it's  mid point . 

Of course, view direction is from up to down. 

Such polyline have no arcs on it. 

Please see attached DWG 

Thanks in advance. 

[Sea-Haven]

Having been involved with CSD for to many years it does have some real nice tools to get somewhere close, the utube is a bit long its part of the online tutorials, so did not post link but can. Basicly you can set a Min. VC length, and a cut / fill ratio so the software attempts to fit vertical curves to the vertical surface. In case of a resheet cut = 0. As I said "close" compared to just a blank long section design. The request for automation was from user meetings to many years ago now. 

[john.uhden]

What is CSD? Sounds like a secret government agency, like maybe Central
Security Department? Did you work for a guy named Leroy Jethro Gibbs and
have Abbie and Ziva as partners?

[Sea-Haven]

You should have a look at this. www.civilsitedesign.com/

[Sea-Haven]

Hi Devitg, can you provide a dwg with the surface as 3d faces or a CIV3D with surface, and a pline for the alignment to be checked. Some idea of minimum vertical curve lengths to be used.

[hak_vz]

After checking CSD website I've just realised that my friend's firm is your sales representative in Croatia.

[devitg]

@Sea-Haven 

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@Sea-Haven wrote:

Hi Devitg, can you provide a dwg with the surface as 3d faces or a CIV3D with surface, and a pline for the alignment to be checked. Some idea of minimum vertical curve lengths to be used.

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No, I have not . It is just a 2d dwg. 

[john.uhden]

I am impressed by the claims, but I'll bet an inexperienced engineer can
still screw up a design.

[Sea-Haven]

That is ok can do a few tricks, rotate3d so stands up Y becomes Z, offset left right then can make a surface. Post a sample will see what I can do.

[Sea-Haven]

The original author has been at it for like 40 years, so understands the world wide market and the needs of the civil designer. Yes inexperienced engineers can still think make water run up hill or try. 

A nice thing is plan, long section, cross sections and 3d view all interactive move a IP vertical and watch stuff change in other views. Only have a laptop 1 screen, when demoed on 3 screens its like WOW everything moving.