使编辑器在场景视图中处理事件。
在 OnSceneGUI 中,您可以编辑网格、绘制
地形或创建高级辅助图标等操作。如果调用 Event.current.Use()
,则编辑器
(而非场景视图本身)将使用该事件。
在以下两个脚本中,OnSceneGUI 用于绘制游戏对象之间的 线条。第一个脚本显示了如何使用 OnSceneGUI。在 此脚本中,游戏对象用作父对象。 获取该父对象的位置后,绘制从该位置到数组中存储的游戏对象的线条。 Handles.DrawLine 函数用于此过程。Handles.DrawLine 文档中介绍了一个非常相似的示例。
using UnityEngine; using UnityEditor;
[CustomEditor( typeof( DrawLine ) )] public class DrawLineEditor : Editor { // draw lines between a chosen game object // and a selection of added game objects
void OnSceneGUI() { // get the chosen game object DrawLine t = target as DrawLine;
if( t == null || t.GameObjects == null ) return;
// grab the center of the parent Vector3 center = t.transform.position;
// iterate over game objects added to the array... for( int i = 0; i < t.GameObjects.Length; i++ ) { // ... and draw a line between them if( t.GameObjects[i] != null ) Handles.DrawLine( center, t.GameObjects[i].transform.position ); } } }
此脚本会存储游戏对象的数组 (将向这些对象绘制线条)。此常规脚本只是附加到 被视为所有线条起点的游戏对象。
using UnityEngine;
[ExecuteInEditMode] public class DrawLine : MonoBehaviour { // an array of game objects which will have a // line drawn to in the Scene editor public GameObject[] GameObjects; }
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.