Transparent Inner Lot

Question

I'm new to C.E. and CGA but have been immersed for last few days in order to generate a cityscape for an important presentation. C.E. could be a time saver provided I don't get hung up on to many little things.....such as...

I've using the schematic city.cga to propegate geometry into a custom designed landscape with elevation. In evaluating the CSA code I can't figure out why the floor (ground plane) of my blocks are transparent. They are clear in teh CE viewport but when exported there is no geometry.

Any clues appreciated?

LR · Answer

Unless I'm not understanding what you're trying to do it seems that you're generating buildings on lots and leaving the area around them blank/NIL. What's visible in CE is the shape underneath, which isn't displayed in the webscene. Try replacing.. @StartRule Lot -->‍‍ with @Color attr GroundColor = "#FF0000" @StartRule Lot --> ColorGround LotCase ColorGround --> color(GroundColor) LotCase -->‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ You can hide shapes by hitting F11 while the viewport is active.

AndrewKamin-Lyndgaard · Answer

Gang-

Thanks for leaning into my inquiry. Still stumped and frustated by my work arounds thus far.

L.R. I have attached the .cga file. Thanks in advance for taking a look.

David-  The back face culling does toggle on/off the visibility of assets....except those generated with the schematic_city.cga rule. Reference pic.

The lack of texture on the building geometry is preferred in this instance but would ideally be able to select from 3-4 ground plane (LotInner) options via the script. Reference creative direction below.

Again...grateful to support of ESRI community.

schematic_city.cga.zip

Doc1.doc

DavidWasserman · Answer

Are you looking at the floors from above or below? Both? It could be a face culling issue. 
What happen in the CE scene when you toggle Back face culling on and off?

http://cehelp.esri.com/help/index.jsp?topic=/com.procedural.cityengine.help/html/manual/ui/vw/vmodes_dsettings.html