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Viewshed and line of sight

PmssS

I have two questions.

The line of sight is a 3d feature class (multipatch) within a GDB, could you tell me how to import it into the city engine and symbolize it according to the field of visibility?

The viewshed has been made with a DSM in ARCMap, The result is a raster would it be better to import the raster to city engine or convert into polygons and import and symbolize it in the city engine?

thanks in advance,

cheers

Pedro

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ThomasKnabl

Hi Pedro

The import could be done by dragging the gdb into CE. Doing the symbolization in CE would require writing a cga rule.

For importing the raster you could use File -> Import -> Terrain Import -> choose your viewshed raster as Texture file and may be the DSM as Heightmap file.

PmssS

Hi,

sadly I have done that and it didn't work.

after importing the line of sight, was interpreted by the city engine as a network!

After I created the rule file I was not able to drag it and drop over the selected objects... nothing happens.

I have 3500 lines of sight... maybe it is too much I will reduce this number and hope for that this is the problem.

Thanks for the viewshed suggestion!

CherylLau

If the GDB contains a multipatch feature class, then you will get shapes in CityEngine.

However, if the GDB contains lines, then you will get a graph network in CityEngine. You can write rules that can be applied to the street shapes generated on the graph network. You cannot directly apply rules to the network, but you can apply the rule to the street shape and make the streetWidth as small as you want and make the sidewalks 0.

PmssS

Hello,

I created cylinders in arcscene that replace those lines of sight, and I import those to city engine.

After I generate this rule file:

attr VisCode = ""

@startRule

vector-->

case VisCode == "1" :

color (1,0,1)

else :

color(0,1,0)

didn't work. any suggestion?

cheers

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