CityEngine CGA “ extrude” Use questions

GGgarlic

 

Using extrusion will produce such redundant faces. How to remove them?

 

 

JonasObertuefer

Hi,

This is because you have multiple initial shapes next to each other.

There are two way to get ride of the faces in-between:

1. Combine the sidewalk shapes together into one:

• Select the sidewalks
• Menu -> Shapes -> Convert Models to Shapes
• Menu -> Shapes -> Combine Shapes
• Apply your rule to this large sidewalk shape

Note: The shape created is not updated when you make changes to your street network.

2. Using occlusion queries:

 

Sidewalk --> extrude(10)
             comp(f) { side : Wall }

Wall --> case touches(inter): NIL   // using inter occlusion
         else : Wall.

 

See comp operation, touches() function  and context and occlusion queries in the cga docs for more infos.

Hope this helps!

Cheers
Jonas