Hi Fme:rs,
Working on a TIN modell from Lidar data in a tunnel. Anybody knows how to avoid the surfacemodeller to create triangels where z differs a lot? For examaple the opening. Cant find that parameter.
/cheers Henrik
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Have you tried using breaklines at the openings?
Hi @hrinze, the point would be how to determine which triangles should be discarded. For example, if the tunnel is straight and parallel to the X axis, you can compute Min/Max X for each individual triangle and then discard triangles whose Max X < (Min X of Tunnel + Tolerance) or Min X > (Max X of Tunnel - Tolerance). See also the attached example (FME 2016.1.3): tunnel-tin.fmw
It's an example for a special condition. The actual criteria should be more complex depending on the data condition, but I think that it can be found if you investigate the data carefully.
Hi @hrinze, the point would be how to determine which triangles should be discarded. For example, if the tunnel is straight and parallel to the X axis, you can compute Min/Max X for each individual triangle and then discard triangles whose Max X < (Min X of Tunnel + Tolerance) or Min X > (Max X of Tunnel - Tolerance). See also the attached example (FME 2016.1.3): tunnel-tin.fmw
It's an example for a special condition. The actual criteria should be more complex depending on the data condition, but I think that it can be found if you investigate the data carefully.