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Conditional rule + reporting

HafidhIhromi

Hi, I am new to this forum. I have been working on my project in urban design/planning using City Engine. I have a problem writing CGA rules, specifically writing conditional rule consisting reporting.

Here's the code I wrote (this is just basics, the whole codes is too lengthy to show here. But this shows the essential part) :

@Range("A","B","C","D","E") attr groundfloorUse = "A"  @Range("A","B","C","D","E") attr upperfloorUse = "A"  reporting -->      case groundfloorUse == "A" : report("F", 1)     case groundfloorUse == "B" : report("G", 2)     case groundfloorUse == "C" : report("H", 3)     case groundfloorUse == "D" : report("I", 4)     case groundfloorUse == "E" : report("J", 5)     else: reporting2  reporting2 --> case upperfloorUse == "A" : report("A", 1)     case upperfloorUse == "B" : report("B", 2)     case upperfloorUse == "C" : report("C", 3)     case upperfloorUse == "D" : report("D", 4)     case upperfloorUse == "E" : report("E", 5)     else: NIL

Now, the frustation begins.. When I apply that code to a lot, it shows 2 parameters as I wrote on CGA rules (just the way I wanted), but when I apply two different attributes to a lot, it only shows result just from one of them. For example; if I apply a lot's groundfloorUse = "A" and upperfloorUse = "B", the reporting window only shows the result regarding to just one of the attributes instead of showing the result from 2 different attributes.

I have been trying many things, writing the whole code in one function, separate it into two functions (just like I showed), using ||, and &&. But it didn't work well.

Can somebody help me? Any answers is much appreciated.

Pardon my English
Thanks

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Accepted answers

curtedmonds

I think the problem lies in the logic of the case.
the first case for groundfloorUse will stop execution and not reach the else

I think you just need the two functions included in a lot call

reporting1 -->
    case groundfloorUse == "A" : report("F", 1)
    case groundfloorUse == "B" : report("G", 2)
    case groundfloorUse == "C" : report("H", 3)
    case groundfloorUse == "D" : report("I", 4)
    else groundfloorUse == "E" : report("J", 5) # or other default

reporting2 --> case upperfloorUse == "A" : report("A", 1)
    case upperfloorUse == "B" : report("B", 2)
    case upperfloorUse == "C" : report("C", 3)
    case upperfloorUse == "D" : report("D", 4)
    else upperfloorUse == "E" : report("E", 5) # or other default

Lot-->
reporting1
reporting2

All comments

HafidhIhromi

And also, how does the 'count' function works? Does it work just the way like in the help files? like this :

example.1
 count("cityengine", "e")
 # result = 2
 
example.2
 count("cityengine rocks my world; cityengine should rock yours too", "cityengine")
 # result = 2

Can the 'count' function used to count how many 'crossing' and 'junction' are there in the selection, and then report it? I need this to count the con value as I mentioned on my previous post. Thanks

HafidhIhromi

Hi, I've created more complex code using the previous template, works fine. But now I face another problem, here's the rules I make :


const far_divider = 1000
const hdens_divider = 100
const junction_count = 5
const crossing_count = 5
const junction_multiplier = 3
const crossing_multiplier = 4

@Range (0,1)
attr envelope_transparency = 0.5

@Range ("living", "commercial", "services", "industrial", "institutional", "recreational", "other", "water")
attr groundfloorUse = "commercial"

@Range ("living", "commercial", "services", "industrial", "institutional", "recreational", "other", "water")
attr upperfloorUse = "living"

@Range(1,2,3,4,5,6,7,8,9,10)
attr groundfloorUse_floorcount = 3

@Range(1,2,3,4,5,6,7,8,9,10)
attr upperfloorUse_floorcount = 3

attr floorheight = 4

@Range (0-20)
attr frontSetback = 0
Range (0-20)
attr sideStreetback = 0
Range (0-20)
attr backStreetback = 0

lot --> shape
  report ("con", (junction_count * junction_multiplier) + (crossing_count * crossing_multiplier))
   report ("ent", 0) #I leave it like this for now
  report1
  report2
  report3

shape --> s('1,0,'1)
 setback(frontSetback) { street.front: NIL | remainder: 
  setback(backStreetback) { street.back: NIL | remainder: 
    setback(sideStreetback) { street.side: NIL | remainder:
    ZoningShell 
   }
  }
 }  

height = floorheight * ( groundfloorUse_floorcount * upperfloorUse_floorcount )

ZoningShell --> envelope(height, 0, 90)
    color

zone1height = floorheight * groundfloorUse_floorcount
zone2height = floorheight * upperfloorUse_floorcount

floor_multiplier = groundfloorUse_floorcount + upperfloorUse_floorcount

#living, commercial, services, industrial, institutional, recreational, other, water

report1 --> case groundfloorUse == "commercial" :
   report("far1", (geometry.area(top) * floor_multiplier) / far_divider)
   case groundfloorUse == "living" :
   report ("hdens1", (geometry.area(top) * floor_multiplier) / hdens_divider)
   case groundfloorUse == "services" :
   report ("-", 0)
   case groundfloorUse == "industrial" :
   report ("-", 0)
   case groundfloorUse == "institutional" :
   report ("-", 0)
   case groundfloorUse == "recreational" :
   report ("-", 0)
   case groundfloorUse == "other" :
   report ("-", 0)
   else :
   report ("-", 0)
   
report2 --> case upperfloorUse == "commercial" :
   report("far2", (geometry.area(top) * floor_multiplier) / far_divider)
   case upperfloorUse == "living" :
   report ("hdens2", (geometry.area(top) * floor_multiplier) / hdens_divider)
   case upperfloorUse == "services" :
   report ("-", 0)
   case upperfloorUse == "industrial" :
   report ("-", 0)
   case upperfloorUse == "institutional" :
   report ("-", 0)
   case upperfloorUse == "recreational" :
   report ("-", 0)
   case upperfloorUse == "other" :
   report ("-", 0)
   else :
   report ("-", 0)

The idea is, I want to report the walkability index by multiplying these factors : far, hdens, con, and ent. I have no problem reporting far and hdens, until I realize I cant combine the value of far1 and far2, and hdens1 and hdens2 using report (or is it possible combining 2 values on report command?). The reason I 'split' this to far1, far2, hdens1, and hdens2(instead only far and hdens) is based on the previous experiment, I have tried to combine all the report (by not making the differences to calculate groundfloorUse and upperfloorUse) but it didn't work. Actually, I am fully aware that I can make tables on Excel to make it easier, but I want to make this all done in City Engine only, if possible, using Excel is my last resort. Any answer will be appreciated. Thanks in advance

curtedmonds

Thanks, you've saved my life!

No Problem, life saving and making cups of tea are just part of the job.

HafidhIhromi

Wow it worked! I see, so in this function, we have to define every possibilities included in an else. Thanks, you've saved my life!

curtedmonds

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