Sketchup 2018 > dae > COLLADA2GLTF > gltf > gltf-pipeline > glb > OL-Cesium

CesiumJS
1

1. A concise explanation of the problem you're experiencing.

I have locally installed both COLLADA2GLTF and gltf-pipeline. I can't find the right command line flags to take my .dae file from Sketchup, and run it through both COLLADA2GLTF and gltf-pipeline to create a viable .glb file for use in OL-Cesium.

2. A minimal code example. If you've found a bug, this helps us reproduce and repair it.

Supposing I start with an export from SketchUp: sketchup.dae
I ran the following commands:
/COLLADA2GLTF/bin/Release/collada2gltf -f ./sketchup.dae -o ./sketchup_gltf
node /gltf-pipeline/bin/gltf-pipeline.js -i ./sketchup_gltf.gltf -o ./sketchup_glb.glb -b --cesium

This only creates the following 1kb file: sketchup_glb.glb

Can someone please give me the appropriate command line calls/flags to create a glb for the following pipe:
Sketchup 2018 > dae > COLLADA2GLTF > gltf > gltf-pipeline > glb > OL-Cesium

3. Context. Why do you need to do this? We might know a better way to accomplish your goal.

I am trying to Load a Sketchup2018 .dae model into OpenLayers Cesium.

4. The Cesium version you're using, your operating system and browser.
Cesium: ol-cesium-v1.27 (based off OL 4.1.1 and Cesium 1.33)

2

Are you able to identify which step causes the problem? Also feel free to send over the model if that’s easier.

3

If I had to guess, I would say it is failing in the gltf-pipeline command to turn the gltf into a glb, but I can't be sure, because I don't know if I even have the command flags set properly. I can send the model, but I would like to teach myself to perform this operation locally for the future.

Any hints on the proper flags?
What is the best way to send the model?

4

Both sets of command flags look ok to me.

If you just run COLLADA2GLTF does the glTF look correct?

You can send the model to me at slilley@agi.com.

5

Inputting the retail.dae,
the output from COLLADA2GLTF contains the following:

-rwx------ 1 root root 48M Dec 14 15:29 retail.dae*

-rw-r--r-- 1 root staff 19M Dec 18 15:18 retail1.bin
-rw-r--r-- 1 root staff 2.3M Dec 18 15:18 retail1.gltf
-rw-r--r-- 1 root staff 366B Dec 18 15:18 retail10FS.glsl
-rw-r--r-- 1 root staff 343B Dec 18 15:18 retail10VS.glsl
-rw-r--r-- 1 root staff 413B Dec 18 15:18 retail11FS.glsl
-rw-r--r-- 1 root staff 343B Dec 18 15:18 retail11VS.glsl
-rw-r--r-- 1 root staff 211B Dec 18 15:18 retail12FS.glsl
-rw-r--r-- 1 root staff 228B Dec 18 15:18 retail12VS.glsl

I will send the .dae to your email. Thanks!

6

Thanks I got your files.

I’m having issues with the master branch of COLLADA2GLTF. The file seems to export correctly but I can’t load it in Cesium. I then tried converting with the 2.0 branch and it actually converts correctly. You may want to use that instead. The only difference is to use -i instead of -f to specify the input file.

gltf-pipeline still only works on glTF 1.0 models, so for the time being I would recommend checking out some of the tools listed here for doing the gltf to glb conversion.

7

Thanks Sean,

I was able to create a gltf with v2.0 but I can't get it to show up in ol-cesium, and I couldn't create the glb (I tried to just load the gltf). Can you send me your gltf model you created? I can send you my dae again if needed.

8

Oh I forgot that COLLADA2GLTF (2.0) can export to binary as well. So the full command to get a glb is: COLLADA2GLTF-bin.exe -i model.dae -b

I loaded both the gltf and glb in Cesium successfully. You might have to open an issue in the ol-cesium project.

I’ll email you a link to the converted model.