Debug.DrawRay 绘制射线


static function DrawRay (start : Vector3, dir : Vector3, color : Color = Color.white, duration : float = 0.0f) : void

Description描述

Draws a line from start to start + dir with color for a duration of time. If duration is 0 then the line is rendered 1 frame.

从start起始位置到start+dir，经过duration一段时间，绘制一条color颜色的线。如果duration为0，那么这条线在1帧中被渲染。

The line will be drawn in the scene view of the   editor. If gizmo drawing is enabled in the game view, the line will also   be drawn there.

这条线将绘制在编辑器的场景视图。如果gizmo在游戏视图中被启用，这条线也在游戏视图中绘制。

  • C#

  • JavaScript

using UnityEngine;using System.Collections;public class example : MonoBehaviour {void Update() {Vector3 forward = transform.TransformDirection(Vector3.forward) * 10;Debug.DrawRay(transform.position, forward, Color.green);}}
// Frame update example: Draws a 10 meter long green line from the position for 1 frame.//帧更新例子：从该位置绘制一条10米长绿色的线，这将在1帧中渲染。function Update () {var forward : Vector3 = transform.TransformDirection(Vector3.forward) * 10;Debug.DrawRay (transform.position, forward, Color.green);}

  • C#

  • JavaScript

using UnityEngine;using System.Collections;public class example : MonoBehaviour {void OnCollisionEnter(Collision collision) {foreach (ContactPoint contact in collision.contacts) {Debug.DrawRay(contact.point, contact.normal, Color.green, 2);}}}
// Event callback example: Debug-draw all contact points and normals for 2 seconds.//事件回调例子：绘制所有接触点和法线，这将用2秒时间渲染function OnCollisionEnter(collision : Collision) {for (var contact : ContactPoint in collision.contacts) {Debug.DrawRay(contact.point, contact.normal, Color.green, 2);}}


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