GUIUtility.RotateAroundPivot

描述

让 GUI 围绕一个点旋转的 Helper 函数。

修改 GUI.matrix 可以让所有 GUI 元素围绕 pivotPoint 旋转 angle 度。

另请参阅：GUI.matrix、ScaleAroundPivot。

using UnityEngine;

public class Example : MonoBehaviour
{
    // Rotate a button 10 degrees clockwise when pressed.

    float rotAngle = 0;
    Vector2 pivotPoint;

    void OnGUI()
    {
        pivotPoint = new Vector2(Screen.width / 2, Screen.height / 2);
        GUIUtility.RotateAroundPivot(rotAngle, pivotPoint);
        if (GUI.Button(new Rect(Screen.width / 2 - 25, Screen.height / 2 - 25, 50, 50), "Rotate"))
        {
            rotAngle += 10;
        }
    }
}