Need Help in Rotation of 3d Buffer Geometry

Questions
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1

I am having two different buffer geometries in same page both needs to be in sync of rotation. I am getting a rotation data “rotations” :[1,0,0,0,1,0,0,0,1] like this from server. With this dataset how can I do rotation because it has 9 values in it. Any idea?

2

Looks like a 3x3 matrix, eg.

[
  1,0,0,
  0,1,0,
  0,0,1
]

Further more in its identity state with its base values set as they would be for an object with no rotation or transform…

Have a look at the Matrix3() class, if the data from the server is varying all the time I’m sure one possible way of achieving this would be to utilize the .getNormalMatrix() method of the class…

const m3 = new Matrix3() 
const m4 = new Matrix4() 

const setRotations(serverData) => {

  m3.set(serverData)
  m3.getNormalMatrix(m4)
  object.quaternion.setFromRotationMatrix(m4)

}
2 Likes
3

Thanks for your solution :slight_smile: