operator *
Combines rotations lhs and rhs.
Read time 1 minuteLast updated 4 days ago
Definition
- Type: Operator
- Namespace: UnityEngine
- Assembly: UnityEngine.CoreModule
operator *(Quaternion, Quaternion)
Combines rotations lhs and rhs.
public static Quaternion operator *(Quaternion lhs, Quaternion rhs)
Parameters
Returns
Type | Description |
|---|---|
| Quaternion |
Remarks
Rotating by the product lhs * rhs is the same as applying the two rotations in sequence: lhs first and then rhs, relative to the reference frame resulting from lhs rotation. Note that this means rotations are not commutative, so lhs * rhs does not give the same rotation as rhs * lhs.
Examples
using UnityEngine;public class QuaternionProduct : MonoBehaviour{ void Start() { // Two simple rotations Quaternion rotX = Quaternion.AngleAxis(90, Vector3.right); Quaternion rotY = Quaternion.AngleAxis(90, Vector3.up); // Order matters: lhs * rhs does not equal rhs * lhs Quaternion result1 = rotX * rotY; // applies Y rotation first, then X Quaternion result2 = rotY * rotX; // applies X rotation first, then Y Debug.Log($"X * Y = {result1.eulerAngles}"); Debug.Log($"Y * X = {result2.eulerAngles}"); // Apply one result to see the difference transform.rotation = result1; }}
operator *(Quaternion, Vector3)
Rotates the point point with rotation.
public static Vector3 operator *(Quaternion rotation, Vector3 point)
Parameters
Returns
Type | Description |
|---|---|
| Vector3 |
Examples
using UnityEngine;using System.Collections;public class Example2 : MonoBehaviour{ private void Start() { //Creates an array of three points forming a triangle Vector3[] points = new Vector3[] { new Vector3(-1, -1, 0), new Vector3(1, -1, 0), new Vector3(0, 1, 0) }; //Creates a Quaternion rotation of 5 degrees around the Z axis Quaternion rotation = Quaternion.AngleAxis(5, Vector3.forward); //Loop through the array of Vector3s and apply the rotation for (int n = 0; n < points.Length; n++) { Vector3 rotatedPoint = rotation * points[n]; //Output the new rotation values Debug.Log("Point " + n + " rotated: " + rotatedPoint); } }}