How do I place the building footprint areas properly in the block(parcel) area ?

Question

Hello, I want to put a lot of buildings in a large parcel area. However, there should be some distances between the buildings and no buildings overflowing outside the parcel area.(Like in the attached png.)

How do I create a rule, I'm new to writing rules. Can you help me with the method?

Buildable_area.png

megan_r_3-1629490290719.png

CherylLau · Accepted Answer

You can split your parcel shape into a grid of building footprints and use geometry.isRectangular to discard the ones that are not rectangular. Parcel --> split(x) { { ~spacing: NIL | width: ParcelSlice }* | ~spacing: NIL } ParcelSlice --> split(z) { { ~spacing: NIL | width: TestFootprint }* | ~spacing: NIL } TestFootprint --> case geometry.isRectangular(0.1): Footprint. else: NIL ‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍ https://doc.arcgis.com/en/cityengine/latest/cga/cga-split.htm https://doc.arcgis.com/en/cityengine/latest/cga/cga-geometry-function.htm#ESRI_SECTION1_7DBA4E7E8618412EAFD572CFA19B17E3 If you want an aligned grid, use the noAdjust option in the split.