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Question

3D Polygon to Pointcloud

  • January 21, 2020
  • 5 replies
  • 140 views

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Hi,

After spending some times on creating a pointcloud from a 3D Polygon, I realized that the PointcloudCombiner does not correctly interpolate on a 3D Polygon. So the workaround is to create a pointcloud with PointcloudCombiner (Points elevation are WRONG) > Pointcloudcoercer (to multipoint) > SurfaceDraper (Drape multipoints on 3D Polygon).

I think that the pointcloudCombiner should handle the conversion or at least write it in the helpsheet.

Thanks

Florian

5 replies

daveatsafe
Safer
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  • Safer
  • January 21, 2020

Hi @floriangandor,

Please try using a FaceReplacer on the 3D Polygons to convert them to true 3D faces before using the PointCloudCombiner.


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Hi,

Thanks for the hint, but I get a INVALID_GEOMETRY_NON_PLANAR when using FaceReplacer...

My 3D Polygon is modelling a flowing river with elevation variation.

daveatsafe
Safer
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  • Safer
  • January 22, 2020

Hi @floriangandor,

Please try using a Triangulator on the river polygon, then sending the TINSurface result to the PointCloudCombiner.


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daveatsafe wrote:

Hi @floriangandor,

Please try using a FaceReplacer on the 3D Polygons to convert them to true 3D faces before using the PointCloudCombiner.

Hello, using the FaceReplacer is also throwing a INVALID_GEOMETRY_NON_PLANAR ...


daveatsafe
Safer
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  • Safer
  • January 28, 2020
floriangandor wrote:

Hello, using the FaceReplacer is also throwing a INVALID_GEOMETRY_NON_PLANAR ...

Hi @floriangandor,

In the FaceReplacer, please set the Thickness Mode and Angular Mode to Ignore to avoid the non-planar error.

Alternatively, you could use a Triangulator instead of the FaceReplacer. The TINSurface output should be a surface.


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