topic Re: "Hole" in cityengine in ArcGIS CityEngine Questions

"Hole" in cityengine

AnaGalego — Mon, 24 Mar 2014 10:50:06 GMT

I have with troubles to enter private buildings thoroughfares.
the cityengine not assume that those playgrounds are empty. anyone have a solution?

Re: "Hole" in cityengine

MatthiasBuehler1 — Wed, 26 Mar 2014 14:09:00 GMT

Hi,

I'm sorry, but I don't understand what you mean ..

Please post screenshots .. Ok ?

matt

Re: "Hole" in cityengine

AnaGalego — Wed, 26 Mar 2014 14:19:37 GMT

In arcgis i have image1 but in city i have image2..
i need the hole in center..

Re: "Hole" in cityengine

LeonidKrylov — Sun, 06 Apr 2014 21:50:50 GMT

It's the only reason we do not use CE in my company. Unfortunately, we had to write Python and Max scripts to export from ArcGIS to 3dsmax. I tested each CE release from 2008 version but every time this problem remains unsolved.

Re: "Hole" in cityengine

MatthiasBuehler1 — Tue, 08 Apr 2014 08:04:23 GMT

Hi,

in CE 2013, this should work.

Ana, can you post a shape file or GDB with that specific footprint ?

Let me know ..

matt

Re: "Hole" in cityengine

AleksandarLalovic — Thu, 17 Apr 2014 10:49:32 GMT

I am experiencing the same problem.

Usually i import DXF files and closed polylines are converted to CE shapes. What usualy happens with the holes is that CE reads it as a second shape. What kind of objects should i export from AutoCAD to preserve the holes?

In VecrorWorks, the same thing hapens both when exporting to DXF or to ShapeFiles, the object with a hole is being impoted as two seperate shapes.

Any ideas?

[ATTACH=CONFIG]33161[/ATTACH]

Re: "Hole" in cityengine

MatthiasBuehler1 — Tue, 22 Apr 2014 13:47:45 GMT

Until CE2012, CityEngine could not interpret holes, thus it created a second shape, with inverted normals.

In 2013, it is supported for shapeFiles and GDB. I'm not sure if it's also working with dxf files.

Alex, can you provide a dxf file with a polygon with a hole ?

Re: "Hole" in cityengine

LeonidKrylov — Thu, 24 Apr 2014 11:21:02 GMT

http://take.ms/5YWu4 ArcScene extrusion
http://take.ms/eWOnC CE 2013.1 extrusion

Re: "Hole" in cityengine

MatthiasBuehler1 — Fri, 25 Apr 2014 12:30:53 GMT

Hi,

thanks for the screenshots.. but I need test files too .. 🙂

Re: "Hole" in cityengine

LeonidKrylov — Tue, 29 Apr 2014 13:25:04 GMT

.rar in attach!

Re: "Hole" in cityengine

MatthiasBuehler1 — Wed, 30 Apr 2014 07:57:08 GMT

hi !

I tried in CE2013 and it works just fine ..

[ATTACH=CONFIG]33476[/ATTACH]

Let me know ..

m.

Re: "Hole" in cityengine

NathanStocker — Thu, 01 May 2014 22:40:07 GMT

Hi,

I'm using CityEngine 2013.1 and holes aren't quite working for me either.

I'm importing parcels with the building footprints cut out. For some parcels it works fine (a 'hole' polygon and a surrounding good polygon), but sometimes it doesn't - it creates a hole polygon but the surrounding polygon doesn't have the hole cut out.

The screenshot attached should help explain. The proper polygons are selected and some have vertices around the hole showing the excluded empty area, but others unfortunately include the empty area.

It tends to be that the inner holes are excluded if they touch a boundary, but not if they are entirely within the larger polygon.

Nate

Re: "Hole" in cityengine

MatthiasBuehler1 — Mon, 05 May 2014 15:24:18 GMT

Hmm.

Interesting ..

Which version of CE are you using ?

Can you post those non-working footprints as e.g. shapeFile or GDB ?

Please let me know ..

Matt

Re: "Hole" in cityengine

MatthiasBuehler1 — Mon, 05 May 2014 15:30:36 GMT

Hi !

I just got some feedback from a developer regarding holes and importing them

( Not 100% all of the above was stated correctly by me)

To clarify: holes are supported with following input formats:
??? CityEngine 2013.1: gdb
??? CityEngine 2014.0: gdb, shp
So if you import footprints with holes into CityEngine 2013.1 we recommend to use the gdb format.

Re: "Hole" in cityengine

LeonidKrylov — Wed, 07 May 2014 18:15:34 GMT

I've done it, Matthias! By using .gdb. Thank you very much:)

Re: "Hole" in cityengine

AleksandarLalovic — Fri, 09 May 2014 06:42:03 GMT

Hi Matt,

Sorry for the late responese. I was trying to import shapefiles in 2013 so that was the issue. I guess i will have to wait for 2014 for that.

Re: "Hole" in cityengine

NathanStocker — Thu, 15 May 2014 01:47:39 GMT

Hi Matt,

Using .gdb did the trick, thanks 🙂

On a related note, I'm having trouble with setback operations on the imported parcels (which have holes from the buildings being cut out). As a simplified example, I've attached a screenshot of the following operation:

Lot -->
Testing1 Testing2

Testing1 -->
color(0,1,0)
extrude(6)

Testing2 -->
setback(3){world.east : NIL | remainder : Testing3}

Testing3 -->
color(1,0,0)
extrude(5)

When I do this, many results (Testing3) fill the hole in as part of the remainder. This is shown in the left parcel of the screenshot, where the red portion is a hole in the original parcel and shouldn't be included in the result.

The parcel on the right has the same rule applied but correctly still excludes the hole.

I'm not sure if this is a remaining issue with holes in imported shapes, or just something with the setback operation.
Is there a way to spatially limit a result to the original shape, so that a result doesn't spill over the boundaries?

Thanks
Nathan

Re: "Hole" in cityengine

MatthiasBuehler1 — Thu, 15 May 2014 14:33:25 GMT

hey !

I believe this should not be.

Can you post this single polygon and the CGA code here, so I can repro here ?

Let me know ..

Matt

Re: "Hole" in cityengine

NathanStocker — Thu, 15 May 2014 19:58:22 GMT

The attached .gdb contains the two parcels from the screenshot - the one which works and the other which doesn't. Looking at them, the obvious difference is that the hole in the one which works extends to the edge of the parcel.

The zip also contains the CGA code, although it's just what I posted previously.

Cheers
N

Re: "Hole" in cityengine

MatthiasBuehler1 — Fri, 16 May 2014 08:04:02 GMT

thanks, this was helpful.

my tests:

2013.1 SR:

[ATTACH=CONFIG]33861[/ATTACH]

2014.0 RC:
[ATTACH=CONFIG]33862[/ATTACH]

So the issue seems fixed. Stay tuned for the release soon.

matt

topic Re: "Hole" in cityengine in ArcGIS CityEngine Questions

&quot;Hole&quot; in cityengine

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"Hole" in cityengine