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

public class DrawLine : MonoBehaviour
{
    private LineRenderer lineRenderer;
    private Vector3 position;
    private int LengthOfLineRenderer=0;
    private int index=0;
    private Mesh meshTest;
    private void Start()
    {
        lineRenderer = gameObject.GetComponent<LineRenderer>();
        lineRenderer.startColor = Color.red;
        lineRenderer.endColor = Color.yellow;
        lineRenderer.startWidth = 0.05f;
        lineRenderer.endWidth = 0.05f;
    }
    private void Update()
    {
        lineRenderer = GetComponent<LineRenderer>();
        if (Input.GetMouseButtonDown(0))
        {
            position = Camera.main.ScreenToWorldPoint(new Vector3(Input.mousePosition.x,Input.mousePosition.y,1f));
            LengthOfLineRenderer++;
            lineRenderer.positionCount = LengthOfLineRenderer;
            //lineRenderer.SetVertexCount(LengthOfLineRenderer);//设置线条段数
        }
        while (index<LengthOfLineRenderer)
        {
            lineRenderer.SetPosition(index,position);
            //lineRenderer.BakeMesh(meshTest);
            index++;
        }
    }
    private void OnGUI()
    {
        GUILayout.Label("当前鼠标X轴的位置"+Input.mousePosition.x);
        GUILayout.Label("当前鼠标Y轴的位置" + Input.mousePosition.y);

    }
}