Select roof part with a angle

Question

Good day,

i have the same problem as: https://community.esri.com/message/395796?commentID=395796#comment-395796?q=dormer

i did try the 3  solutions but non seem to work anymore.

the rule work becouse the gable roof angle is >45% but if i set it to <45% it fails.

I like this approach (word.north, etc) because I can use lidar data to search for the domers and then fill a field on what location on the roof they are.

@StartRule
Lot -->
 extrude(20)
 comp (f) {front: Front | side:Wall | top:Roof}

Front -->
 color (1,0,0)

Wall -->
 color (0,1,0)

Roof-->
 roofGable(50)
 comp(f) {world.north : Roofdormer | world.west : Wall |world.east : Wall | world.south : roof }

Roofdormer-->
 color (0,0,1)
 split(x){'0.40 : roof | '0.2 : DormerLocation | '0.40: roof}

DormerLocation-->
 split(y){'0.4: roof | '0.3 :Dormer| '0.5: roof}

roof-->
 color (1,0,0)

PeterVersteeg · Accepted Answer

Ok with help from Niels vd Vaart from Esri the Netherland I have a solution. I am using the geometry.angle(azimuth) to get the azimuth of the roof and so get the side I want. This only works when my house is facing the right angle for my rule. I have to think how I can make this work for houses with all angles. But for now this is what I got: @Range(1, 89) attr GableAngle = 50 @StartRule Lot --> extrude(10) comp (f) {front: Front | side:Wall | top:Roof} Front --> color (1,0,0) Wall --> color (0,1,0) Roof--> roofGable(GableAngle) GableRoof GableRoof --> case GableAngle < 45 : RoofGableA case GableAngle > 45 : RoofGableB else :NIL RoofGableB --> comp(f) {front : color(1,0,0) frontA. | back: color(0,0,1) backA.} RoofGableA --> comp(f) {top : color(1,0,0) frontB | bottom: color(0,0,1) backB.} frontB--> # comp(f) { all : color(0.5, geometry.angle(azimuth) / 360, 0.5) Shape. } case geometry.angle(azimuth) < 90 : color(0,1,0) Nside case geometry.angle(azimuth) > 90 : color(0,0,1) Sside else : NIL Sside--> split(x){'0.40 : NoDormers | '0.2 : DormerLocation | '0.40: NoDormers} DormerLocation--> split(y){'0.4: NoDormers | '0.3 :Dormer| '0.5: NoDormers} Dormer --> color(1,0,0)