Referencing different styles from within the same CGA file

[NicolaiSteinø]

Is there a way to reference different styles within a cga script?

Say you want to render different facade styles (or other characteristics defined by styles) based on a constraint map reference. How do you do that?

In my case, I want to control the amount of new buildings to replace historical buildings in an urban regeneration area by means of a gray scale map indicating the redevelopment ratios for different parts of the area. I have defined old and new building types with different names within one cga file (quite a hassle and not very clean) but I would like to simplify my script (and my work) by using styles. Only, I can't figure out a way to do it.

Can you help?

Thanks,

Nicolai

[MatthiasBuehler1]

Hi !

Calling or referencing styles is currently not possible. If you find out how it works .. Let me know .. 🙂

So atm, you best map the 'building style' with a map and then define each attr value by a function, e.g. anything in this direction :

myValues(key) =
    case myMappedStyle == "residential" :
        case key == "height" : 6
        case key == "facade texture" : "res_1.jpg"
..

[NicolaiSteinø]

OK, thanks.

I'm afraid maps won't do it for me, as my criteria are not necessarily geo specific. But I'll try to think of another approach then.

Styles just seem so neat�?�

Nic

[MatthiasBuehler1]

Note that instead of sampling from images ( maps ), you can also sample object attributes from geometries on other layers !

E.g. if you have polygonal shapes with 'zones' defined as attrs, you can define their layer mapping, then sample for those values from shapes on other layers.

Cheers !

[ChristianGass1]

Rather than keeping building types in a single cga file, it might be easier to split them into separate files and import the cga file for the appropriate building type into a master.cga. The imported building type cga file can be selected conditionally, based on the value from raster constraint map layer. It will keep the code a bit neater and make it more expandable (for more building types.

I'm working on a similar problem (though hadn't considered using styles); you may find the discussions in this thread informative.