Change roof direction in Building from footprint rule

Question

Hi,

I'm creating a city model in CityEngine, and I created the 3d models of buildings with "Building from footprint" rule, but I don't know how to rotate the orientations of the roof. Any suggestions?

In particular, I want to flip the roof direction and rotate the texture mapping to fit the same direction of the front side wall.

Here is the real context I need to replicate in my scene

DavidWasserman · Answer

Hey Valerio,

I took a look at the rule briefly. The first extrusion seems to align the geometry to the longest edge. However, can you try first edge setting just in case.

That should be the right command, and don't worry CityEngine takes a while to learn. It is just like any new software.

David

ValerioBozzo · Answer

Hi David,

I used the rule Building_from_footprint.cga located in the default CE rules folder.

I don't know how to change the first edge in a shape. Should I use the command line Set First Edge?

Maybe I posted some stupid questions, but I'm a beginner with this kind of software. I always worked with cad and rendering software.

Regards,

Valerio

DavidWasserman · Answer

Hey Valerio,

Can you post a link to the rule you used? Is it in Esri.lib?

Have you tried setting the first edge on the shapes you are using? 
http://cehelp.esri.com/help/index.jsp?topic=/com.procedural.cityengine.help/html/manual/is/manually/manipulating.html

David