Create non-planar shape 3D

Question

Hello, 
 
 I need to create non-planar shape which is build from two planar shape, adjacent to each other. 
 When I build such a shape manually (or programmatically) , it renders as very strange, twisted shape, which seems non-coherent with delivered 3D coordinates. 
 I've attached sample DGN. 
 
 OpenCities Map Advanced 10.16 
 
 Best Regards, 
 Ryszard 
 
 3d.dgn

Sebastien Lefrancois · Answer

Ryszard, 
 I am not sure I understand your needs. In Map, we can add plane constraint to a XFM polygon collection. For that you have to defined a polygon collection in the schema (via GeoSpatial Administrator) and select one of option to set the plane you want to display and calculation of area. See help to understand each option : Support Non-Planar Shapes If you still facing issue, without using XFM planar option, you may check on CAD (MicroStation) forum who may provided more judicious inputs about 3D issues. Or maybe I can found someone to help you on my side. I hope that helps. Sebastien

David Trejo-Rodriguez · Answer

The following may help in understanding drawing in 3D: 
 https://www.youtube.com/watch?v=JCvezUApl9Q 
 From the file you provided to create a single element you can use the stitch surfaces tool

Create non-planar shape 3D

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