koobas.hobune.stream
method to rotate a Vector3 around a Vector3 by specified direction and degrees
I have created a way to calculate a Vector3 that is rotated around another Vector3, but I would like a way that uses proper Vector3 math (i.e not using an empty gameObject). Can anyone help?
CartesianCoordinates = new Vector3[12];
var myEmpty : GameObject = new GameObject("GameObject") as GameObject;
var thePivot : Vector3 = Vector3.zero;
var rotatedAngleX : float = 60.0;
for (var c : int = 0; c < 12; c ++)
{
myEmpty.transform.position = CartesianCoordinates[c];
myEmpty.transform.RotateAround( thePivot, -Vector3.right, rotatedAngleX );
CartesianCoordinates[c] = myEmpty.transform.position;
}
Best Answer
Wiki
Sorry, I don't use JS - but check out:
// otherVector is your Vector3 relative to the origin (so you'll have to convert from world space before doing this)
Quaternion q = Quaternion.AngleAxis(30, Vector3.up);
Vector3 rotatedVector = q * otherVector;
Thanks, I didn't know about AngleAxis. I changed the loop content to the below, and it worked.
var q : Quaternion = Quaternion.AngleAxis( rotatedAngleX, -Vector3.right );
CartesianCoordinates[c] = q * CartesianCoordinates[c];
