topic Re: CityEngine rail rule???... please help me :) in ArcGIS CityEngine Questions

CityEngine rail rule???... please help me :)

AndréLevesque — Fri, 22 Jan 2016 16:06:50 GMT

Hi folks,

I downloaded the following rule this morning and cant seem to get it to work for me... it appears as though the rule cannot find the texture files associated to it...

Is there somewhere in the code of the cga file that I have to add a path or something?

Link to the rule: Rail rule for streets?

Matthias Buehler... can you give me advice?

Re: CityEngine rail rule???... please help me :)

CherylLau — Fri, 22 Jan 2016 17:45:59 GMT

If you try to open the scene file (tracksScene.cej) in CE 2015.2, then the railroad tracks do not look curved. Is this what you're talking about when you say it's not working? This might be because this code was written for an earlier version of CityEngine, and things have changed since then. To fix this, you can select all shapes (right click in viewport -> Select -> Select All) and then make the graph segments curved by going to Graph -> Set Curves Smooth.

For the missing texture files, I'm guessing you are referring to the warnings generated about not being able to find the .mtl files. This is ok because it doesn't affect the generation of models in the scene, and you don't need to do anything. There are no texture files (mtl files) associated with these obj files. If you want to make these warnings go away, you can edit the obj files and remove all the lines that contain anything to do with "mtl".

Re: CityEngine rail rule???... please help me :)

AndréLevesque — Fri, 22 Jan 2016 18:25:55 GMT

Unknown Asset…

André Lévesque, BA CTech

GIS Tech 4 / Technicien de SIG 4

City of Moncton/Ville de Moncton

Information Systems Dept. des systèmes informatiques

email: andre.levesque@moncton.ca<mailto:andre.levesque@moncton.ca>

Phone #: (506) 383-6274

Re: CityEngine rail rule???... please help me :)

CherylLau — Mon, 25 Jan 2016 09:56:13 GMT

Does the scene file (tracksScene.cej) in the zip file work for you? Do you still have unknown asset problems with the included scene file?

Re: CityEngine rail rule???... please help me :)

AndréLevesque — Mon, 25 Jan 2016 12:37:58 GMT

When I load it, and try to generate the models, nothing happens.

André Lévesque, BA CTech

GIS Tech 4 / Technicien de SIG 4

City of Moncton/Ville de Moncton

Information Systems Dept. des systèmes informatiques

email: andre.levesque@moncton.ca<mailto:andre.levesque@moncton.ca>

Phone #: (506) 383-6274

Re: CityEngine rail rule???... please help me :)

CherylLau — Tue, 22 Jun 2021 08:02:22 GMT

I'm able to get it to work with the following project layout. The obj files are in the assets folder, the cga file is in the rules folder, and the cej file is in the scenes folder. Then I open the cej file and apply the changes described in my first post (https://community.esri.com/message/582552 ). I did not have to change the cga file.

Re: CityEngine rail rule???... please help me :)

AndréLevesque — Tue, 26 Jan 2016 18:54:59 GMT

I'll give this a shot and elt you know how it goes, thanks.

Re: CityEngine rail rule???... please help me :)

AndréLevesque — Tue, 26 Jan 2016 19:00:20 GMT

the rule works now, many thanks

Re: CityEngine rail rule???... please help me :)

SheylaSantana — Wed, 17 Aug 2016 21:34:47 GMT

Where do you download this rule? Can you send it to me? shesantana@hotmail.com

When I click in the link you post, I brings me to the welcome page.

Many, Many thanks.

Re: CityEngine rail rule???... please help me :)

CherylLau — Thu, 18 Aug 2016 15:46:17 GMT

Here is Matt's code, but it was written a while ago for a much older version of CityEngine, so it comes with a warning that it might not work anymore.

Re: CityEngine rail rule???... please help me :)

SheylaSantana — Thu, 18 Aug 2016 18:36:02 GMT

Many thanks, Cheryl!

Re: CityEngine rail rule???... please help me :)

SheylaSantana — Mon, 29 Aug 2016 15:33:02 GMT

Cheryl Lau,

Any idea of why I can't see the obj in my scene? The rule has no error and it applies fine to my train rail but it doesn't apply any texture.

Re: CityEngine rail rule???... please help me :)

SheylaSantana — Tue, 30 Aug 2016 17:17:42 GMT

Hello, Cheryl.

I have talked with Matt about this trail rule. He told me that in order to the rule work, I need the *.mtl file and texture. Do you still have these files? The zip you sent me just have the *.cga and the *.obj.

Matt is sending you a hello!

Thank you,

Sheyla

Re: CityEngine rail rule???... please help me :)

CherylLau — Mon, 12 Sep 2016 11:08:23 GMT

Sorry, I do not have the .mtl files.

Maybe you could just apply a color instead?

Re: CityEngine rail rule???... please help me :)

SheylaSantana — Mon, 12 Sep 2016 23:05:00 GMT

Hi, Cheryl.

Thank you for your reply!

I will try to figure out something else. If I can't, I will apply colors.
Thanks!

Re: CityEngine rail rule???... please help me :)

SheylaSantana — Wed, 14 Sep 2016 14:55:38 GMT

Problem solve! Many thanks for everyone's help! Specially matthiasBuehler‌! You are awesome!

Re: CityEngine rail rule???... please help me :)

MatthiasBuehler — Wed, 14 Sep 2016 15:31:12 GMT

I'm glad I could help!

Matt

Matthias Buehler

Founder, vrbn

www.vrbn.io

Re: CityEngine rail rule???... please help me :)

Joao_PedroMarques — Tue, 31 Jan 2017 21:03:24 GMT

Hi,

Is it possible to get the .mtl file?

Thank you!

Re: CityEngine rail rule???... please help me :)

SheylaSantana — Wed, 01 Feb 2017 14:01:34 GMT

Sure, Joao.

See the rule attached.

Sheyla

Re: CityEngine rail rule???... please help me :)

Joao_PedroMarques — Wed, 01 Feb 2017 15:28:46 GMT

Thank you, Sheyla.

Everything is working now.