unity学习18：unity里的 Debug.Log相关

1 unity里的 Debug.log相关

2 用Debug.DrawLine 和 Debug.DrawRay画线

2.1 画线

1 unity里的 Debug.log相关

除了常用的 Debug.Log，还有另外2个

Debug.Log("Debug.Log");
Debug.LogWarning("Debug.LogWarning");
Debug.LogError("Debug.LogError");

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class debugTest : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
    Debug.Log("Debug.Log");
    Debug.LogWarning("Debug.LogWarning");
    Debug.LogError("Debug.LogError");

    }

    // Update is called once per frame
    void Update()
    {
        
    }
}

2 用Debug.DrawLine 和 Debug.DrawRay画线

2.1 画线

Debug.DrawLine(new Vector3(290,90,100),new Vector3(290,100,100),Color.blue);
DrawLine( 起点坐标，终点坐标)

Debug.DrawRay(new Vector3(290,90,100),new Vector3(290,100,100),Color.red);
DrawRay( 起点坐标，方向)
其实方向，也就是这里的Vector3(290,100,100) 是指
Vector3(0,0,0) 到Vector3(290,100,100)的方向，把起点从Vector3(0,0,0)挪到Vector3(290,90,100)这里来形成的一个新射线
这么详细解释下
step1: 有一个向量Vector3(290,100,100), 画出来，Vector3(0,0,0) → 指向Vector3(290,100,100), 图上的红色箭头
step2:然后把这个向量挪动，方向不变，起点挪动到Vector3(290,90,100) 这里来,生成了图上红色的细线

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class debugTest : MonoBehaviour
{
    // Start is called before the first frame update
    void Start()
    {
    Debug.Log("Debug.Log");
    Debug.LogWarning("Debug.LogWarning");
    Debug.LogError("Debug.LogError");

    }

    // Update is called once per frame
    void Update()
    {
    Debug.DrawLine(new Vector3(290,90,100),new Vector3(290,100,100),Color.blue);
    Debug.DrawRay(new Vector3(290,90,100),new Vector3(290,100,100),Color.red);
    }
}