CODEWITHSUNDEEP
importthree.jswebglconverters
Blake
Blake

Reputation: 162

three.js how to import old JSON models using r58

I built a THREE.JS program using older models (ginger demo). After upgrading from r44 to r58, I was no longer able to use the models that were created using version 2 of the python based OBJ -> Three.js converter. The issue, I am assuming, is due to the formatting of the files.

I do not have the original .OBJ models, so I'm trying figure out how to upgrade the older json format to the newer one so that the parser can read it. I considered importing it into the THREEJS Editor and then exporting again, but the models have morphing targets and those were not preserved using that technique.

Here is an example of a JSON file I'm trying to upgrade.

The following is my progress thus far: When importing using the JSONLoader, the initial error I get is:

Uncaught SyntaxError: Unexpected token /

That is due to commenting of metadata, so I added the commented metadata to a metadata field to match the format seen near line 160 of this converter file. I also removed all other non-JSON code (variables, etc). I also got rid of the "edges" field because it was empty and I didn't find taht string in the .py code.

The json file loaded successfully, but I got the following errors when I used it: 

Uncaught TypeError: Cannot read property 'map' of undefined 
Uncaught TypeError: Cannot read property 'attributes' of undefined

The 'attributes' error repeated indefinitely.

The json file looks like this:

{
"metadata": {
    "formatVersion" : 2,
    "generatedBy"   : "OBJConverter",
    "vertices"      : 168,
    "faces"         : 144,
    "normals"       : 576,
    "colors"        : 0,
    "uvs"           : 175,
    "materials"     : 1
},
"scale" : 1000.000000,
"materials": [  {
    "DbgColor" : 15658734,
    "DbgIndex" : 0,
    "DbgName" : "phong1SG",
    "colorAmbient" : [0.0, 0.0, 0.0],
    "colorDiffuse" : [0.8, 0.8, 0.8],
    "colorSpecular" : [1.0, 1.0, 1.0],
    "illumination" : 4,
    "mapDiffuse" : "ginger_color.jpg",
    "opticalDensity" : 1.0,
    "specularCoef" : 98.0
}],
"vertices": [1900,6776,...],
"morphTargets": [],
"morphColors": [],
"normals": [-0.024569,-0.94821,...],
"colors": [],
"uvs": [[0.37164,0.65357,...]],
"faces": [43,1,...]
}

What is the error in my manual conversion? Is it even possible to use the same data from different converter versions? Is there a better way to do this?

Upvotes: 1

Views: 488

Answers (1)

mrdoob
mrdoob

Reputation: 19602

You should be able to convert them using the editor by dragging the file into the editor and then exporting it. Sadly the exporter is not complete yet (missing UVs)...

Upvotes: 1

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