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Create topography from point cloud

Create topography from point cloud

I would like the ability to select areas of a point cloud survey and be able to get Revit to generate a Toposurface.

 

Currently this isn't possible and so the user cannot create a proposed survey for a site...

7 Comments
karibal
Advocate

Great Idea, but the file size would be the issue with that one. 

Kevin.Bell
Advisor

Agreed, the creation routine would need some sort of algorithm to reduce point density...

samuelsanf
Advisor
kleinkemper
Enthusiast

If only Revit was owned by the same company that owns Civil 3D or AutoCAD they could maybe learn from them and use that knowledge to improve Revit. If only there was a company like, and i am going to make up a name - like Autodesk. If only that fictional company had 20 years to put a real math engine capable of professional level of work in Revit, like being able to use State Plane Coordinates or anything more than 10 miles from the origin without failing (you will read online that Revit can do 20 miles, but that's a diameter around the origin - its a 10 mile radius when it starts to have serious graphical errors.) 

 

WE ARE ON VERSION 2020. Give us a real math engine (not the original one that rounds to 3 decilmal points for designing houses). An engine that can handle real terrain issues and allow us to extract topography from point clouds! PLEASE!!!

chris.holmes
Explorer

I agree we need this functionality. Civil3D works fine for general terrain, but when you have point clouds of vertical structures like quay walls, it fails to triangulate correctly. We have lost work as a result as we haven't been able to fully interrogate the survey. Either Revit or Civil3D needs to be able to convert point clouds into surfaces (and handle vertical faces!)

lionel.kai
Advisor

As a workaround, you could export the points you're interested in to a text file (use CloudCompare, if needed), then use that file to create the Toposurface. The Simplify Surface tool might help reducing size... but (as with anything topo related) expect it to be slow.

 

@kleinkemper That's why we're starting to look at other software... from companies that care.

TWGLarson
Explorer

This is a feature available in Faro's As-Built software but should be an integrated part of Revit. When creating topography you are given the option to put points at certain elevations, but there needs to be a way to select a specific point in a point cloud to use as a topography point. We currently use IngersollConsulting's Topography plug-in which is incredible but does not allow this feature. The ability to fine-tune which points are used for a topographical model is key when working with point-clouds.

 

Yes we are aware that there are other ways such as Civil3D. It's 2020. This needs to be a part of Revit.

 

Thanks.

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