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[1.8.8/1.8.9] Help with Forge blockstate transforms


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Commit 097c0c6 recently added the ability to use a single blockstates JSON for multiple item models, so I thought I'd try and convert my custom bow's models (identical to the vanilla bow's models) into a blockstates JSON. You can see the result here.

 

The model changes as the bow is used like before, but I'm having trouble getting it rotated and scaled properly with the transformation format used by the Forge blockstates format.

 

I tried to convert the vanilla item model transformations to the Forge format using the following code, but it doesn't display like the vanilla model.

 

TRSRTransformation thirdPerson = TRSRTransformation.blockCornerToCenter(new TRSRTransformation(new ItemTransformVec3f(new Vector3f(5, -100, -45), new Vector3f(0.75f, 0, 0.25f), new Vector3f(1, 1, 1))));
TRSRTransformation firstPerson = TRSRTransformation.blockCornerToCenter(new TRSRTransformation(new ItemTransformVec3f(new Vector3f(0, -135, 25), new Vector3f(0, 4, 2), new Vector3f(1.7f, 1.7f, 1.7f))));

 

This is the

"transform"

block I ended up with:

"transform": {
"thirdperson": {
	"rotation": [ -0.31877723, 0.6963295, 0.21487917, -0.60608023 ],
	"translation": [ 0.75, 0, 0.25 ],
	"scale": [ 1, 1, 1 ],
	"post-rotation": [ 0, 0, 0, 1 ]
},
"firstperson": {
	"rotation": [ 0.19996417, 0.9019799, -0.08282786, -0.37361234 ],
	"translation": [ 0, 4, 2 ],
	"scale": [ 1.7, 1.7, 1.7 ],
	"post-rotation": [ 0, 0, 0, 1 ]
}
}

 

This is what it looks like with no transformations. This is what it looks like with transformations.

 

How do I properly convert the vanilla transformation format to the Forge format?

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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Bump again. Still having the same issue finding the right transformations.

 

This is what it looks like in third person with no transformations. This is what it looks like in third person with transformations.

Please don't PM me to ask for help. Asking your question in a public thread preserves it for people who are having the same problem in the future.

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So, without transformation, your bow got the right position bit it is not rotated, and when you apply the transformation your bow is rotated correctly but it is rendered in the wrong position? Maybe the transformation method doesn't work properly. Anyway i am probably not the right person to give you suggestions on this as i am a "rendering noob"

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