Gizmos.DrawLine

描述

绘制一条从 from 开始到 to 的线。

If you need to draw many lines consider the Gizmos.DrawLineList or Gizmos.DrawLineStrip functions which are much faster than repeatedly calling this function to draw lines individually.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public Transform target;

    void OnDrawGizmosSelected()
    {
        if (target != null)
        {
            // Draws a blue line from this transform to the target
            Gizmos.color = Color.blue;
            Gizmos.DrawLine(transform.position, target.position);
        }
    }
}

Additional resources: Gizmos.DrawLineList, Gizmos.DrawLineStrip.