topic Re: OBJ Missing Textures in CityEngine in ArcGIS CityEngine Questions

OBJ Missing Textures in CityEngine

JeffShih — Thu, 31 Jul 2014 21:35:04 GMT

Hello all,

I have built a model in Sketchup, everything looks fine and correct; however, when I bring it into CityEngine some of the textures are missing (it's just white - see attached image). I've already searched the forums and tried all the suggestions - reversing faces, checking file paths, reapplied texture... even remodeling the areas of concern from scratch. And yes, I've tried all the formats dae, kmz, obj... etc.

Can anyone provide any insight as to what might be causing this? In the second image, you can see that the vertical walls of the residential complex is missing. The unit itself is an exact duplicate of the units on the right, if it had something to do with the model, shouldn't it appear the same with the others?

Re: OBJ Missing Textures in CityEngine

MatthiasBuehler — Mon, 04 Aug 2014 10:40:15 GMT

Hi !

make sure the .mtl file is in the same directory as the .obj file.

then, check the texture paths within the .mtl file (text editor). I assume you have wrong texture paths.

easiest is to make the paths relative, either directly to the same folder as the obj or to a subfolder in the same directory.

ok ?

matt

Re: OBJ Missing Textures in CityEngine

JeffShih — Wed, 06 Aug 2014 16:56:23 GMT

Hi Matt,

This was actually the first thing I tried. All the file paths inside the .mtl file appear to be in order and yes, they are both in the same directory.

Re: OBJ Missing Textures in CityEngine

MatthiasBuehler — Sat, 16 Aug 2014 00:22:45 GMT

how big are the texture resolutions ?

Re: OBJ Missing Textures in CityEngine

JeffShih — Tue, 19 Aug 2014 20:10:42 GMT

They are just textures from the default Sketchup library - less than a mb.

Re: OBJ Missing Textures in CityEngine

MatthiasBuehler — Tue, 19 Aug 2014 20:58:22 GMT

hmm..

can you post one of the files that don't work with the texture ?

let me know ..

matt

Re: OBJ Missing Textures in CityEngine

SóniaIldefonso — Thu, 14 May 2015 14:30:38 GMT

Hello Matthias,

did you solve this?

Re: OBJ Missing Textures in CityEngine

SóniaIldefonso — Thu, 14 May 2015 14:34:08 GMT

I got the same problem.

I created an OBJ from Graphisoft ArchiCAD software and now I'm trying to import it into CityEngine.

The textures don't show up...

Re: OBJ Missing Textures in CityEngine

Rosa_ — Wed, 03 Jun 2015 08:53:23 GMT

Make sure that in .mtl file, material's name has no spaces, but replace them with uderscores _. For example:

# Blender MTL File: 'castel.blend'

# Material Count: 75

newmtl Acciottolato_18

Ns 0.000000

Ka 0.000000 0.000000 0.000000

Kd 0.398400 0.398400 0.398400

Ks 0.107000 0.098000 0.096000

Ni 1.500000

d 1.000000

illum 2

map_Kd /Volumes/NO NAME/Castel/Acciottolato_18.jpg

map_Ka /Volumes/NO NAME/Castel/Acciottolato_18.jpg

........

Re: OBJ Missing Textures in CityEngine

MicahTaylor — Tue, 16 Jun 2015 18:37:23 GMT

I am currently having this same issue with some retail development plans I made in Sketchup. I wanted to move this retail model into CityEngine to supplement the rule generated models, but less than half of the textures show up. After reading the mtl file I found that most of the textures were not mapped to the faces AND didn't make it to the sub-folder containing the actual texture files to begin with. Here is an extension that exports ALL of your texture files from a sketchup model (Just dont have them as components in sketchup and it will work)

LIPID OBJ Exporter for SketchUp | SketchUp Extension Warehouse

.However, my model is still missing textures in CityEngine, but they are at least present in the file system and mapped in the mtl file.

This might get you started on fixing the problem. PLEASE let me know if you figure it out. Thanks! and Good luck.

Re: OBJ Missing Textures in CityEngine

MicahTaylor — Tue, 21 Jul 2015 12:52:03 GMT

I think I have discovered something about the Sketchup Exports. The Models export correctly if I create the texture in sketchup using the "import image as texture" option instead of using the default textures/colors in Sketchup. For example, dont use the default "red" color in Sketchup....find an image of red and bring it into sketchup as a texture. This mapped successfully to my exported model. I am not sure why.

This may not be the case for other users. I am using Sketchup 2015, and CityEngine 2015.0 and exporting as .obj with absolutely NO default textures from sketchup.

Hope this helps...Good Luck.