Spot elevation between polylines with elevation

[Trudy]

Hello i have question. I need lisp to extract elevation in spots from polyline surface.

I know for civil 3d and surfaces i work with this but for this project i need to make same thing in Autocad.

 

I know the math for interpolate but dont know how to make it. (dont have good idea for now)

 

Thank you all for support and help.  

test1.dwg

[hosneyalaa]

HELLO 

SEE THIS IS LINK

 

 

[aridzv]

On 5/12/2021 at 1:26 AM, hosneyalaa said:

HELLO 

SEE THIS IS LINK

 

 

Thanks!!

[Trudy]

I want the elevation in some spot between 2 horizontals. 

[BIGAL]

Civ3D use the spot on a 3d triangle for the Z value.

 

I am pretty sure this has been answered before it may be at Forums/Autodesk. Google more.

 

The only issue is the ray line direction you can get closestpointto to easy but its angle will vary from the point to the contour line.