lisp to draw center line for road with curve

[land]

Hello every one, i need a lisp for draw alighment with offset with curve

 

 

 

[BIGAL]

Explain more, why not just use offset and make new alignments, thats the way we did it multiple  road jobs a year.

[hosneyalaa]

can you  attach an example drawing

[mhy3sx]

Hi land. Look this

 

https://www.cadforum.cz/en/how-to-create-an-axis-of-two-curves-average-curve-tip11025

 

I attach the *.vlx file from the previous link.

curveaxis.vlx

Edited May 3, 2023 by mhy3sx

[dexus]

http://web.archive.org/web/20160530183259/https://lispbox.wordpress.com/2015/04/29/centerline-between-two-polyline/

[land]

what i want is alighiment with offset in civil 3d and multiline in autocad but with curve

simply i want to draw polyline with curve 

[hosneyalaa]

On 5/3/2023 at 7:11 AM, hosneyalaa said:

can you  attach an example drawing

 

Maybe

Can you use get polyline from alignment  method 

Edited May 7, 2023 by hosneyalaa

[BIGAL]

Yeah Civ3d has a little nasty make an alignment from a pline and forget don't erase so original pline is gone. Just remember to freeze the layer with all the alignment plines on it.

 

"Civil Site Design" does all the cleaning up for you reads the road template and when add kerb returns joins the correct strings as it draws the radius or another alignment linking 2 roads.

Edited May 8, 2023 by BIGAL