Unity - LineRenderer show a line

Demo下载地址

01 新建一个line的控件

02 Add controls to scripts

03 Control the color of the lines via script,粗细,位置

using UnityEngine;
using System.Collections;
using System.Threading;
using UnityEngine.UI;

public class Demo : MonoBehaviour
{
    

    //游戏对象,Here is the line segment object 
    public GameObject LineRenderGameObject;

    //Line segment renderer 
    private LineRenderer lineRenderer;

    //两个按钮
    public Button btn1;
    public Button btn2;

    [System.Obsolete]
    void Start()
    {
    
        //通过游戏对象,GetComponent方法 传入LineRenderer 
        //Just given beforelineRenderer properties added by game objects 
        //With this object it is possible to render line segments for the game world 
        lineRenderer = LineRenderGameObject.GetComponent("LineRenderer") as LineRenderer;

        if (lineRenderer != null)
        {
    
            //设置线的颜色
            lineRenderer.startColor = new Color(0, 0, 255, 1);
            lineRenderer.endColor = new Color(0, 0, 255, 1);

            //Sets the width of the line at the start and end of the line,值越大越宽
            lineRenderer.startWidth = 0.05f;
            lineRenderer.endWidth = 0.05f;

            //Draw two lines,take the starting point(0)和终点(1),The position of the start and end points is that of the buttonposition,直接获取到了ugui的按钮位置,Convert it to world coordinateslineRenderer
            lineRenderer.SetPosition(0, btn1.transform.position);
            lineRenderer.SetPosition(1, btn2.transform.position);

            Debug.Log("btn1.transform.position = "+ btn1.transform.position);
        }

    }

}

04 设置layer看linerender和canvasWho is in front and behind.（因为linerender不是2d物体,不在canvas层）