Unity linerenderer 绘制轨迹画轨迹出现很多全为0的点

Question

我在使用 linerenderer 绘制轨迹的时候，总是会出现一些坐标全为0的点，但实际传入的坐标中并没有这些点，请问怎么解决

我的部分代码如下：

void Update()
{
  if (trail2_Flag == 1)
        {
            if ((lastPoint2 == new Vector3(0, 0, 0)) || (lastPoint2 == null))
            {
                goto esc;
            }   
            if (trail_points2.Count > 0)
            {
                line2.positionCount = trail_points2.Count;
                //UnityEngine.Debug.Log(trail_points2[trail_points2.Count-1]);
                //UnityEngine.Debug.Log("lastPoint2 : " + lastPoint2);
                line2.SetPosition(trail_points2.Count - 1, lastPoint2);          
            }
            trail2_Flag = 0;
            esc:;          
        }
}
void Par(string recv)
{
        trail_points2.Add(new Vector3((float)decimal.ToDouble(latitude_2), 
            0, (float)decimal.ToDouble(longitude_2)));        
        trail2_Flag = 1;
        trail2end:;
}
public Vector3 lastPoint2
    {
        get
        {
            return (trail_points2[trail_points2.Count - 1]);            
        }
    }

Answer 1

不知道啊