先抛出代码: public class DrawLine : MonoBehaviour { //LineRenderer private LineRenderer lineRenderer; //定义一个Vector3,用来存储鼠标点击的位置 private Vector3 position1, position2; //用来索引端点 private int index = 0; //端点数 private int LengthOfLineRenderer = 0; private Color c = new Color(255,255,255,1);