RedKettle Posted March 25, 2020 Share Posted March 25, 2020 Hi All I am looking for a solution regarding the calculation of a surface area. I am looking to scan the hull of a boat. This data will be in a DXF format. Can someone please let me know if it is possible to then calculate the actual surface area of the entire hull. I am currently exploring some options and am looking for a solution. I would appreciate any help or insights Regards Quote Link to comment Share on other sites More sharing options...
Chris.E_AllaboutCad.com Posted May 8, 2020 Share Posted May 8, 2020 Hi RedKettle, You may use the AREA command for this. Say the ship hull is an intersection of a cylinder and a sphere, we can use AREA> OBJECT or calculate the two solids, then deduct one another. AREA>Add Area> Object/AREA>Subtract Area> Object Hope this helps Cheers Quote Link to comment Share on other sites More sharing options...
ammobake Posted May 8, 2020 Share Posted May 8, 2020 What kind of precision are you going for? If you have google earth or google map image of the vessel, that's a great start for getting ballpark figures. There are multiple ways. One method is to draw a 100' line/path in google earth. export your current view, including the ship, to image file. Insert that in Autocad as a raster image. Draw 100' line in Autocad and scale the image to 100% scale. From there you can easily draw polylines, splines, etc. Hatch the area you want to get surface area from and get it from properties. OR you can use the "area" command in autocad. But I think the hatch method would be more accurate. Another way would be to use google earth and Save a blown-up "map" of the vessel. Maps printed from google earth pro include a drawing scale. So you would scale the image in CAD (similar to above) using the drawing scale and proceed getting surf area that way. The maps from GE pro have the added benefit of being as high resolution as you want. So they work pretty good. -ChriS Quote Link to comment Share on other sites More sharing options...
BIGAL Posted May 9, 2020 Share Posted May 9, 2020 If its a 3d model you can make a surface, then take the surface mesh and convert to faces, if you can make into triangles a TIN of 3d faces you can then get the actual area of each face. Done that for landscaping true grass area. Others will provide way of converting to a surface not my expertise. I am not sure of the author of the 3dface lisp. 3dfacearea.lsp Quote Link to comment Share on other sites More sharing options...
SLW210 Posted May 11, 2020 Share Posted May 11, 2020 I have moved your thread to the AutoCAD 3D Modelling & Rendering Forum. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.