position | 3D 空间中手柄的中心位置。 |
rotation | 3D 空间中手柄的方向。 |
Vector3 通过用户与手柄的交互修改的新值。如果用户没有移动手柄,则将返回您传递给相应函数的值。
创建一个位置手柄。
此手柄的行为类似于 Unity 中的内置移动工具。\
场景视图中的位置手柄。
将以下脚本作为 PositionHandleExample.cs 添加到 Assets 文件夹,然后将 PositionHandleExample 组件添加到场景中的对象。
using UnityEngine;
[ExecuteInEditMode] public class PositionHandleExample : MonoBehaviour { public Vector3 targetPosition { get { return m_TargetPosition; } set { m_TargetPosition = value; } } [SerializeField] private Vector3 m_TargetPosition = new Vector3(1f, 0f, 2f);
public virtual void Update() { transform.LookAt(m_TargetPosition); } }
将以下脚本作为 PositionHandleExampleEditor.cs 添加到 Assets/Editor,然后选择包含 PositionHandleExample 组件的对象。
using UnityEditor; using UnityEngine;
[CustomEditor(typeof(PositionHandleExample)), CanEditMultipleObjects] public class PositionHandleExampleEditor : Editor { protected virtual void OnSceneGUI() { PositionHandleExample example = (PositionHandleExample)target;
EditorGUI.BeginChangeCheck(); Vector3 newTargetPosition = Handles.PositionHandle(example.targetPosition, Quaternion.identity); if (EditorGUI.EndChangeCheck()) { Undo.RecordObject(example, "Change Look At Target Position"); example.targetPosition = newTargetPosition; example.Update(); } } }
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