start | 应作为该射线起始点的世界空间中的点。 |
dir | 该射线的方向和长度。 |
color | 绘制的直线的颜色。 |
duration | 该直线的可见时长(单位为秒)。 |
depthTest | 该直线是否应被靠近此摄像机的其他对象遮挡? |
在世界坐标中绘制一条从 start
到 start
+ dir
的直线。
duration
参数确定在绘制该直线所在的帧之后该直线可见时长。如果持续时间为 0(默认值),则该直线被渲染 1 帧。
如果将 depthTest
设置为 true,则该直线将被此场景中更靠近摄像机的其他对象遮挡。
将在该 Editor 的场景视图中绘制该直线。如果在游戏视图中启用了辅助图标绘图,则在该视图中也将绘制该直线。
using UnityEngine;
public class Example : MonoBehaviour { // Frame update example: Draws a 10 meter long green line from the position for 1 frame. void Update() { Vector3 forward = transform.TransformDirection(Vector3.forward) * 10; Debug.DrawRay(transform.position, forward, Color.green); } }
using UnityEngine;
public class Example : MonoBehaviour { // Event callback example: Debug-draw all contact points and normals for 2 seconds. void OnCollisionEnter(Collision collision) { Debug.DrawRay(collision.contacts[0].point, collision.contacts[0].normal, Color.green, 2, false); } }
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