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Ground polygon issue...

Ryan Jackson

Ryan Jackson

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22
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unitedkingdom
I have a peculiar issue with a ground polygon made with Sketchup and converted/placed using the ground poly wizard in MCX.

I've checked my flatten and the alt set in the ground poly wizard and they're both set at the same. But I get this flickering and bleed-through in certain areas of the ground polygon. These seem to be defined by certain aspects of the sketchup model. For example, one set of screenshots shows the bleed-through effectively 'cut off' where an axis line is in the sketchup model, and the other set of screenshots shows where the bleed-through is 'cut off' where a reference image is in the sketchup model. On the areas of the ground polygon that don't flicker and bleed-through, it seems fine! But does anybody know why certain areas of the ground poly have this issue?

Thanks!
 

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I would check to be sure that each vertex point in the flatten is at the correct altitude precisely. Also be sure that no addon terrain mesh is overriding your flatten.
 
I turned off 'slice polygons', 'group polygons' and 'optimize reference point location' in the ground polygon wizard and now the polygon seems to display correctly.
 
Hi there, I too had this problem. From what I have seen, this happens when you have many layers one over the other (I don't know whether the term "layers" is correct here, I mean when two things overlap each other). This will be solved after you remove the Geo Location. Another thing you can do is to invert the faces (I am not sure however), but removing Geo-Location is what helped me solve it :).
 
Hi,

Flickering can be caused by overlapping polygons indeed. Especially if you give them the same layer in the GPW. Not sure why unchecking those options then fixed it, but maybe the performance optimizations that the GPW do actually mess up the order of these polygons a bit when they are all on the same layer.
 
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