topic Re: Transparent Inner Lot in ArcGIS CityEngine Questions

Transparent Inner Lot

AndrewKamin-Lyndgaard — Tue, 06 Dec 2016 23:54:40 GMT

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?

Re: Transparent Inner Lot

DanPatterson_Retired — Wed, 07 Dec 2016 01:36:43 GMT

I have moved this post to https://community.esri.com/community/gis/3d/cityengine?sr=search&searchId=fa0bc4e5-dae3-40ff-a404-37ced9ff6a08&searchIndex=1‌ so it doesn't languish unnoticed

Re: Transparent Inner Lot

LR — Wed, 07 Dec 2016 11:16:07 GMT

Post the rule?

Re: Transparent Inner Lot

DavidWasserman — Thu, 08 Dec 2016 01:45:45 GMT

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

Re: Transparent Inner Lot

AndrewKamin-Lyndgaard — Thu, 08 Dec 2016 22:48:59 GMT

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.

Re: Transparent Inner Lot

LR — Sun, 12 Dec 2021 01:48:11 GMT

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.