koobas.hobune.stream
[Math] Why is this possible ?
Hello guys,
I am trying to do a Movement Controller which moves to player forward relative to its direction. When I have done some research on this topic, I noticed that this line of code would do the trick:
Vector3 direction = transform.rotation * new Vector3(Input.GetAxis("Horizontal"),0,Input.GetAxis("Vertical"));
Why are we able to apply the rotation (Quaternion as datatype) to the Vector3 which stores the Input values.
The next thing I noticed: If we turn around the statement, so the Vector3 is instaniated first, the line of code will no longer work and throw and error.
you are unknowingly using the Quaternion.operator* :
http://docs.unity3d.com/ScriptReference/Quaternion-operator_multiply.html
As you can see you can use the operator for
1) Quaternion*Quaternion (returns Quaternion)
2) Quaternion*Vector3 (returns Vector3 ---> Your case)
Everything else, like Vector3*Quaternion will throw an error
