public static Quaternion Disc
(Quaternion rotation,
Vector3 position,
Vector3 axis,
float size,
bool cutoffPlane,
float snap);
Parameters
| rotation | 圆盘的旋转。 |
| position | 圆盘的中心。 |
| axis | 要围绕其旋转的轴。 |
| size | The size of the disc in world space See Also:HandleUtility.GetHandleSize. |
| cutoffPlane | 如果为 true，则只有正面的半个圆圈是可绘制/可拖动的。当您有许多用于避免混乱的重叠的旋转轴时（例如在默认旋转工具中），这非常有用。 |
| snap | 要贴靠到的网格大小。 |
Returns
Quaternion 通过用户与手柄的交互修改的新旋转值。如果用户没有移动手柄，则将返回您传递给相应函数的值。
Description
Make a 3D disc that can be dragged with the mouse. Note: Use HandleUtility.GetHandleSize where you might want to have constant screen-sized handles.
Disc Handle on the Scene View.
// Name this script "DiscHandleEditor"
using UnityEngine;
using UnityEditor;
[CustomEditor(typeof(DiscHandle))]
[CanEditMultipleObjects]
public class DiscHandleEditor : Editor
{
public void OnSceneGUI()
{
DiscHandle t = (target as DiscHandle);
EditorGUI.BeginChangeCheck();
Quaternion rot = Handles.Disc(t.rot, t.transform.position, new Vector3(1, 1, 0), 5, false, 1);
if (EditorGUI.EndChangeCheck())
{
Undo.RecordObject(target, "Disc Rotate");
t.rot = rot;
t.Update();
}
}
}
附加到此手柄的脚本：
// Name this script "DiscHandle"
using UnityEngine;
[ExecuteInEditMode]
public class DiscHandle : MonoBehaviour
{
public Quaternion rot = Quaternion.identity;
public void Update()
{
transform.rotation = rot;
}
}