Faces disappear after rotating the view

Rhino Rhino for Windows
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1

Hello,

I have a problem about Rhino’s display. There’re some complex meshes baked from grasshopper, but some faces of them seemed like to be clipped.

Those faces would be shown when I just changed the display mode or some other settings, but if I rotated the view or setting down, they were disappeared.

image
image1168×1008 89.7 KB

If anyone could help ~ ~ Thx ~

2

Could be a couple of things. Did you try to rebuild the mesh in Grasshopper? I would guess it hase something todo with the mesh normals, maybe check them as well

3

I think I found it. Because of the block. If I move the mesh out of the block, it shows well. But why?

4

Without a 3dm file, it’s impossible to tell.
-wim