3D Visualization of Floodplain Line artifacts

[BenC5]

Hello all,

I'm attempting to create a 3D visualization of a Floodplain. I used the Interpolate shape tool to create my 3D Z-enabled flood depth polygon and have loaded it into a 3D scene in ArcGIS Pro. I extruded it using Absolute Height and everything works really well.

My question is regarding the line artifacts present in the Interpolated shape when it is extruded to the elevation surface.

- Is there any way to polish or remove these artifacts?

- Is there a different interpolation method that would produce a cleaner result.

Being able render floodplains like this in 3D would be an incredibly impactful visual aid in my industry, but I would like it to look a more polished than what I've currently been able to produce before going public with it.

Thanks for any help!

B

[RockRunEnterprises]

Maybe try a higher resolution(smaller cell size) when creating the original surface/s.

[Andrew--Johnson]

I'd recommend converting it to a multipatch. Try running the Layer 3D to Feature Class tool and seeing how that output looks.

thanks,

Andrew

[BenC5]

Hi Andrew,

Thanks for response. Your method is an improvement. The Multipatch FC has more options regarding lighting, which can reduce the effect of the line artifacts, but doesn't completely eliminate them.

I've tested using TINs to interpolate and tried various settings but it seems there is always something left.

I should clarify that the artifacts are only present when transparency is applied.

Ben 

[Andrew--Johnson]

Can you share the polygon layer as a layer package so I can take a deeper look on my end?

[BenC5]

Hi Andrew,

Yes for sure! Here is the original file created using the interpolate shape tool and the Multipatch version created using the Layer 3D to Feature class tool. Thanks again for your help!

[Andrew--Johnson]

Looks like the data was not consolidated with the package. Can you check the "include UNC path data" option and re-share?

thanks,

Andrew

[BenC5]

For sure. Here is a new set:

[Andrew--Johnson]

thanks, that worked. I'm heading out for the day but i'll take a deeper look on Monday and follow up with you then.

-Andrew

[Andrew--Johnson]

Hi Ben,

I reached out to the graphics team and logged an internal issue for the team to see what can be improved. The problem at hand is the graphics engine has to render the transparent faces in real-time since it's an extruded polygon and this can lead to sorting issues. There are display options (In layer properties display tab) that were added in previous releases to attempt to handle these cases but it's not perfect for every case and unfortunately does not seem to improve much for this case.

One additional thing that I did try and seemed to improve the output considerably was run the Simplify Polygon GP tool with a 1 meter simplification tolerance. This appeared to remove most of the artifacts and hopefully this is good enough for you. You can also increase the tolerance more but at a loss of granularity.

If I hear any additional feedback from the graphics team i'll be sure to post back here.

thanks,

Andrew