TIN surface from Point Cloud via Cloudworx
Hi All,
I am about to upgrade from Pro to BIM to start taking our surveys to that arena, however I am looking for advice on how best to model the exterior ground around a given building.
The best way I can see is to isolate that area and create TIN surfaces, however I can't see if it's possible to window points of a cloud brought in via Cloudworx and convert them to a surface. I don't really want to use the native Point Cloud import as CW is far better for serious and regular use. However i was hopeful BC would recognise the nodes being used to display the PC in CW.
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Hello.
You could import the point cloud natively in Bricscad only to create a TIN surface from it.
Then remove (detach) the point cloud file and keep using Cloudworx for point cloud related tasks.Alternatively, you could use some Cloudworx related functions to create the geometry needed for the TIN surface, like 3D points or 3D faces.
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Do you have to have the Civils module for BricsCAD to do TIN creation? I had Pro, but upgraded to BIM recently and had hoped that the ability to create ground terrain would be included in that.
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Hello.
The civil tools are available with a Pro license or higher, so the BIM license also includes the civil tools.
A TIN surface can be created in Bricscad by using the TIN command.
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If your source Lidar is in LAS/LAZ format, you can go straight from that file to a BricsCAD TinSurface using the free LidarTools for BricsCAD application. It also contains several related tools, such as drawing labeled plan view bounding tiles to see the extents of the LAS/LAZ files.
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Although my data is from a Leica laser scanner, it's very intersting to know you can do this with drone LAS.
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It does not attempt to classify existing ground, and unless your drone data is of an area devoid of vegetation and structures, feeding it raw drone lidar is basically "garbage in". If you have a super small output file (of ground) from your laser scanner I would be interested in seeing it. We're not into point clouds of buildings, etc, only aerial lidar.
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Hi Terry,
If you first use the pointcloud classifier and make only the ground points visible and hide all the others, it should create a TIN based on ground points.
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