topic Re: Interior walls design in ArcGIS CityEngine Questions

Interior walls design

tozlusandalye — Sun, 12 Jan 2014 21:54:05 GMT

I would likte to do a city engine project like in this web scene
http://www.arcgis.com/apps/CEWebViewer/viewer.html?3dWebScene=9c0e319bfaff4d33a0fe2da97c2c3fd7
Are there any tutorial video or documents or rule files etc. to create interior walls?

Re: Interior walls design

MatthiasBuehler1 — Mon, 13 Jan 2014 10:16:49 GMT

Hi,

This project was made based on attributed 2D GIS data.

Means all Interior walls were stored as separate polygons. Then, a rule was written that translates the polygons first up to the according floor height, then extrudes by the wall height.

Makes sense so far ?

Now, it depends a bit on what type of data you have or whether you want go generate entire interiors procedurally (not based on GIS polygon data).

Let me know ..

matt

Re: Interior walls design

vassokosti — Thu, 16 Jan 2014 20:25:53 GMT

Hello!

I would also like to create a project which represents the inside of a building. But i'd like a little help cause tutorial
confuses me a bit.

You are saying that this was created based on attributed 2D GIS data. In other words a file was created with
the floor plan digitised in ArcGIS and an attribute table for each polygon?
And then this was inserted in CityEngine as the lot which is going to be extruded afterwards?

Or the lot each self was digitised, inserted in CityEngine and extruded with the Facades.cga
Then Interior walls digitised in ARcgis and with the attribute table, were inserted in CityEngine and extruded with the BuildingsUse.cga?

I am really confused because i dont know where to start from. :confused:

Re: Interior walls design

MatthiasBuehler1 — Fri, 17 Jan 2014 10:18:37 GMT

It's the first case you described.

Each wall or door is a digitized, attributed shape which in CityEngine gets just 1 'extrusion' rule that works based on the attributes. E.g. if you have a floor polygon, it won'd be extruded, while a wall polygon is extruded to the roomHeight attribute.

Makes sense ? 🙂

matt

Re: Interior walls design

vassokosti — Sun, 19 Jan 2014 20:06:53 GMT

It's the first case you described.

Each wall or door is a digitized, attributed shape which in CityEngine gets just 1 'extrusion' rule that works based on the attributes. E.g. if you have a floor polygon, it won'd be extruded, while a wall polygon is extruded to the roomHeight attribute.

Makes sense ? 🙂

matt

Of course 🙂 and thank you for your instant answer!
But what about the attributes? They must be inserted with the .shp file somehow? What was the organization which was followed for them? Because i don't know if they will be lost or if they are recognised automatically from CE?

These: STRUCTURETYPE, SPACETYPE, SHORTNAME, BASEELEV which are shown in Buildingsuse.cga like this:
// Set default feature attribute values
attr STRUCTURETYPE = "unknown"
attr SPACETYPE = "unknown"
attr SHORTNAME = "unknown"
attr BASEELEV = 0

and are shown also in "Object Attributes" in Inspector with much more information (e.g. BUILDING) are these attributes which must
necessarily be included in the attribute table of each polygon in ArcGIS?

Dear Matthias thank you in advance for your helpful advice! 🙂

Re: Interior walls design

MatthiasBuehler1 — Mon, 20 Jan 2014 13:12:26 GMT

Hi,

CityEngine ports all attributes that are defined on a feature, but you don't necessarily need to work with these in CityEngine.

I'm not sure if you've seen the tutorial videos yet ( find them in my signature ).

Please refer to Gert's detailed GIS tutorial here (6 parts, dowload all parts at once because 1 part contains the data) :
http://resources.arcgis.com/en/communities/city-engine/01w90000000r000000.htm#s=0&n=30&d=1&md=cte-ce-version:010_cte-resource-type:0000010000

Or also use the Redlands Training materials found here:
http://www.arcgis.com/home/item.html?id=ebbdb2fd0403493caac729a20d126166

Ok ?

Matt

Re: Interior walls design

vassokosti — Mon, 20 Jan 2014 14:18:34 GMT

I have read all of the fifteen tutorials.. but i have a few misunderstandings..

I am going to study the two training materials that you just advised me to see!

Thank you again for your help!

Re: Interior walls design

MatthiasBuehler1 — Mon, 20 Jan 2014 14:39:24 GMT

Ok, no problem.

Let me know what question remain ! 🙂

matt

Re: Interior walls design

vassokosti — Sun, 30 Mar 2014 16:08:47 GMT

Hello!

I need your help because there is one more question for now.

I am creating the interior of a building. My first question is about stairs. I see that there is an attribute defined called "BASEELEV" and this changes a bit for every step of the stair. I did the same for my stairs but it didn't work.
How can I give to my stairs the different height, so when I import the shapefile to be in the exact place?
I suppose that the same procedure, that I do not know, must be followed for the creation of the second, third, etc floor, doen't it?

Re: Interior walls design

MatthiasBuehler1 — Sun, 12 Dec 2021 03:41:14 GMT

hi,

are you using a translation in your code ?

e.g.

attr BASEELEVATION = 0

attr STEPHEIGHT = 0.16

Step -->
    alignScopeToAxes(y)
    t(0,BASEELEVATION,0)
    extrude(world.y, STEPHEIGHT)
    t(0,'-1,0)
    Step.