Trudy Posted May 11, 2021 Share Posted May 11, 2021 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 Quote Link to comment Share on other sites More sharing options...
hosneyalaa Posted May 11, 2021 Share Posted May 11, 2021 HELLO SEE THIS IS LINK Quote Link to comment Share on other sites More sharing options...
aridzv Posted May 29, 2021 Share Posted May 29, 2021 On 5/12/2021 at 1:26 AM, hosneyalaa said: HELLO SEE THIS IS LINK Thanks!! Quote Link to comment Share on other sites More sharing options...
Trudy Posted May 29, 2021 Author Share Posted May 29, 2021 I want the elevation in some spot between 2 horizontals. Quote Link to comment Share on other sites More sharing options...
BIGAL Posted May 29, 2021 Share Posted May 29, 2021 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. Quote Link to comment Share on other sites More sharing options...
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