[1.16][Not Solved] need help with OBJ models

[kiou.23]

I've got an obj model rendering on an item, however I'm facing three issues:

1- the model doesn't render correctly in the player inventory

2- the model has a face that is missing (the model looks fine in the 3d editor)

3- the model pivot point is weirdly placed when it is rotating on the ground

4- the texture doesn't load and the model just renders all black

here's a repo for the mod: https://github.com/jvcmarcenes/dicehoard

and here are some images of the problem:

 

 

 

 

 

 

 

 

Edited March 24, 2021 by kiou.23

[vemerion]

I have never used an obj model before, but my guess is that you can still use the 'display' field in the item json model file to change the rotation/translation/scale of the item. Take a look at the Minecraft wiki article about it. That would solve issue 1 and 3 I think.

[kiou.23]

  On 3/24/2021 at 6:38 PM, vemerion said:

I have never used an obj model before, but my guess is that you can still use the 'display' field in the item json model file to change the rotation/translation/scale of the item. Take a look at the Minecraft wiki article about it. That would solve issue 1 and 3 I think.

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okay, seems like that should solve some of the problems (although the trial and errors to get the numbers right is going to be a headache...)

thanks!

[kiou.23]

still unsolved, I've looked at the code for hours and I have absolutelly no clue what I could do.

I'd appreciate some help

[Beethoven92]

I haven't messed with OBJ models either but..don't you need to specify the texture path in the form modid:item/texture_name here: https://github.com/jvcmarcenes/dicehoard/blob/4e02044bec2bedceebf402ba875ecb9d73593da4/src/main/resources/assets/dicehoard/models/dice/d_six.mtl#L4? After relocating your texture file of course

[kiou.23]

  On 3/26/2021 at 1:18 AM, Beethoven92 said:

I haven't messed with OBJ models either but..don't you need to specify the texture path in the form modid:item/texture_name here: https://github.com/jvcmarcenes/dicehoard/blob/4e02044bec2bedceebf402ba875ecb9d73593da4/src/main/resources/assets/dicehoard/models/dice/d_six.mtl#L4? After relocating your texture file of course

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I'll try that

I didn't think I'd need to since the .mtl and the texture are in the same folder

EDIT: did not solve it

Edited March 26, 2021 by kiou.23

[lupicus]

Beethoven92 is correct, you need to change map_Kd line to (map_Kd dicehoard:item/white). I put your files is a test project and the texture loads. (Note: I used your png file and not the jpg in model folder)

Edited March 26, 2021 by lupicus

[kiou.23]

  On 3/26/2021 at 6:07 PM, lupicus said:

Beethoven92 is correct, you need to change map_Kd line to (map_Kd dicehoard:item/white). I put your files is a test project and the texture loads. (Note: I used your png file and not the jpg in model folder)

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still won't work for me

I updated the repo with the suggestion, can you confirm that what I tried is the same as what worked for you?

EDIT: nervermind, it works, I'm dumb

the reason why I thought it wasn't working was due to ItemColors returning pure black

Edited March 26, 2021 by kiou.23

[lupicus]

I should've mentioned that I only took assets and no code, sorry about that.

For #2, you have 2 texture U coordinates above 1.0 (the last 2 defined in OBJ file). Changing them to 1.0 makes it look correct.

Edited March 26, 2021 by lupicus

[kiou.23]

  On 3/26/2021 at 10:44 PM, lupicus said:

I should've mentioned that I only took assets and no code, sorry about that.

For #2, you have 2 texture U coordinates above 1.0 (the last 2 defined in OBJ file). Changing them to 1.0 makes it look correct.

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Thank you!

the uv thing is odd, I got the files exported from vectary and it rendered fine in the viewer.

[lupicus]

For #1 and #3 you can adjust position in json file (this looks about right):

{
  "loader": "forge:obj",
  "model" : "dicehoard:models/dice/d_six.obj",
  "display": {
    "gui": {
      "translation": [ 10, 3, 5 ]
    },
    "ground": {
      "translation": [ 9.6, 5, 8 ]
    }
  }
}

 

[kiou.23]

  On 3/27/2021 at 12:15 AM, lupicus said:

For #1 and #3 you can adjust position in json file (this looks about right):

{
  "loader": "forge:obj",
  "model" : "dicehoard:models/dice/d_six.obj",
  "display": {
    "gui": {
      "translation": [ 10, 3, 5 ]
    },
    "ground": {
      "translation": [ 9.6, 5, 8 ]
    }
  }
}

 

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yeah, I was just tinkering with the numbers

I'm still gonna need to fine tune the translation for some other dispalys, but this already helps!