Rotation between two unit vectors

[Hartha]

Hi,

In Threejs, you can calculate the rotation between two unit vectors like this
 

var quaternion = new THREE.Quaternion().setFromUnitVectors( v1, v2 );
var matrix = new THREE.Matrix4().makeRotationFromQuaternion( quaternion );

how can i do this in babylonjs ?

[JohnK]

Sorry it is taken so long to get a reply. Hopefully, if I have understood what setFromUnitVectors does,  the following does the equivalent where v1 and v2 are unit vectors

var angle = Math.acos(BABYLON.Vector3.Dot(v1, v2));
var axis = BABYLON.Vector3.Cross(v1,v2);
var quaternion = BABYLON.Quaternion.RotationAxis(axis, angle);
var matrix = BABYLON.Matrix.Identity();
BABYLON.Matrix.FromQuaternionToRef(quaternion, matrix);

As you have not given the context for use I have not tested the above.

[Hartha]

@JohnK I'm getting a great help from you and the others in this forms, Thank you