topic Re: Vertical extrusion on non-horizontal lot in ArcGIS CityEngine Questions

Vertical Extrusion on Non-Horizontal Lot

NoemiNeuenschwander1 — Mon, 17 Oct 2011 14:55:18 GMT

Hi

How can I extrude a building on a non-horizontal, non-planar lot with resulting horizontal, planar floors?

Re: Vertical extrusion on non-horizontal lot

MatthiasBuehler1 — Sun, 12 Dec 2021 04:29:53 GMT

hi Noemi !

you can do something like this :

attr buildingHeight = 15

Lot -->
    extrude ( world.y, buildingHeight )
    Building.

after the extrusion, you need to decide if you split the volume into (again volumetric) floors or first do a comp(f) to split off each facade side, which you then can split into floors.

there are different possible strategies, so I'd first play around a little.

Re: Vertical extrusion on non-horizontal lot

NoemiNeuenschwander1 — Wed, 26 Oct 2011 08:32:50 GMT

Hi Matthias

Normally I do it this way, but this time I dont work with the building footprints but with the parcels and I perceived the following problem of non-horizontal extrusion (I need horizontal roofs)

I tried lots of things (like the following code and different combinations of its components) without satisfying solution:

Scope -->
// Rot(scope.rx, scope.ry, scope.rz)
// Rot(origX, origY, origZ)-->
// rotate(abs, world, scope.rx, scope.ry, scope.rz)
// extrude(world.y, 30)
extrude(30)
// set(scope.rx, origX)
// set(scope.ry, origY)
// set(scope.rz, origZ)
comp(f){front: Front | back:Back | top:Roof | side:Side}

Re: Vertical extrusion on non-horizontal lot

NoemiNeuenschwander1 — Wed, 26 Oct 2011 08:33:34 GMT

Re: Vertical extrusion on non-horizontal lot

MatthiasBuehler1 — Thu, 27 Oct 2011 13:10:06 GMT

hi !

well, you have different possibilities and strategies.

please see the following examples .