Help required : From 3DS/OBJ to DAE to glTF to CESIUM offline

Hi,

I am trying to convert 3ds to dae and then into glTF using the online converter at https://cesiumjs.org/convertmodel.html, however,
the online converter is not working, i have dropped the zipped dae and texture files on it, also tried to use the Choose files options, even tried using it on other browsers, but it does nothing. Then I tried the converter at https://github.com/KhronosGroup/glTF/wiki/Converter-builds ,
using this i managed to convert the dae to gltf but whenever i try using them in my application i get the following error message.

RuntimeError: Failed to load external image: http://localhost:3030/Apps/Sandcastle/c130-wing_bmp.jpg

I am making an offline application. Badly need some help, I am completely lost.

Can you share the dae file you are using? Is it version 1.5? I believe there were problems with 1.5 and I’m not sure if they have been addressed yet.

Is the path in the .gltf file to the .jpg correct? Does the .jpg file exist? For the offline converter, try the -e option to embed resources and there will be just one .gltf with all resources embedded. If you still have issues, work through the troubleshooting section of the tutorial.

For our online converter, we can’t debug it without the model so please pass it along if you are able to as Matt mentioned.

Patrick

3ds model which I converted using blender to dae is attached, i converted this to glTF using the aforementioned offline converter

C130.dae (2.25 MB)

<library_images>
    <image id="Interior_tga_001" name="Interior_tga_001">
      <init_from>/C:/Users/rockl_000/Downloads/Compressed/c130/c130/Interior.tga</init_from>
    </image>
  </library_images>

Open up your model in a text editor and notice that the .tga file is refrenced to a local path.

You need to delete the path and reference the model as a local texture file like this

  <library_images>
    <image id="Interior_tga_001" name="Interior_tga_001">
      <init_from>Interior.tga</init_from>
    </image>
  </library_images>

Then save the dae and re convert the model to GLTF

Did as you asked, edited the dae , saved it then reconverted it using the -e argument and got on 10 mb gltf file, but when I ran the App I got
this error message: (deleted parts of the message as it exceeded limits)

RuntimeError: Failed to load external image: data:application/octet-stream;

base64,AAAKAAAAAAAAAAAAAAgACBgAgxAQEIEjJyMBJikmIycjgSElI4EhJCGBIycjASYpJiMnI4MhJSaBISQjAiEkJiEkIyEjI4EhJCEAISMjgyEkI4MhJSOCISMj

[OMITTED]
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a/p@http://localhost:3030/Build/Cesium/Cesium.js:378:3637
n@http://localhost:3030/Build/Cesium/Cesium.js:378:3154
o/r<@http://localhost:3030/Build/Cesium/Cesium.js:378:3012
a/d/<@http://localhost:3030/Build/Cesium/Cesium.js:378:3499
f@http://localhost:3030/Build/Cesium/Cesium.js:378:4883
a/p@http://localhost:3030/Build/Cesium/Cesium.js:378:3637
n@http://localhost:3030/Build/Cesium/Cesium.js:378:3154
a.createImage/i.onerror@http://localhost:3030/Build/Cesium/Cesium.js:379:13949

And When I converted without the -e argument, I get this error message:

RuntimeError: Failed to load external image: http://localhost:3030/Apps/Interior.tga
t@http://localhost:3030/Build/Cesium/Cesium.js:379:28874
G/<@http://localhost:3030/Build/Cesium/Cesium.js:397:19931
o/r<@http://localhost:3030/Build/Cesium/Cesium.js:378:3012
a/d/<@http://localhost:3030/Build/Cesium/Cesium.js:378:3499
f@http://localhost:3030/Build/Cesium/Cesium.js:378:4883
a/p@http://localhost:3030/Build/Cesium/Cesium.js:378:3637
n@http://localhost:3030/Build/Cesium/Cesium.js:378:3154
o/r<@http://localhost:3030/Build/Cesium/Cesium.js:378:3012
a/d/<@http://localhost:3030/Build/Cesium/Cesium.js:378:3499
f@http://localhost:3030/Build/Cesium/Cesium.js:378:4883
a/p@http://localhost:3030/Build/Cesium/Cesium.js:378:3637
n@http://localhost:3030/Build/Cesium/Cesium.js:378:3154
a.createImage/i.onerror@http://localhost:3030/Build/Cesium/Cesium.js:379:13949

Before you run the offline converter, convert the .tga file to a .jpg or .png (and change the reference in the .dae file). The online converter does this automatically, but this is not part of the offline one. TGA files are not supported by browsers.

Patrick

Converting the .tga to a .png did the trick. A .3ds model converted to .dae (using blender) converted to .glTF (using Offline glTF converter) used in Cesium, without the textures though. Thanks for all your help.