俩个要点:1 是判断物体在摄像机的前面 2 是判断物体的视口坐标在(0,0)至(1,1)之间
public bool IsInView(Vector3 worldPos)
{
Transform camTransform = Camera.main.transform;
Vector2 viewPos = Camera.main.WorldToViewportPoint(worldPos);
Debug.Log("viewPos.x:" + viewPos.x);
Debug.Log("viewPos.y:" + viewPos.y);
Vector3 dir = (worldPos - camTransform.position).normalized;
float dot = Vector3.Dot(camTransform.forward, dir); //判断物体是否在相机前面
if (dot > 0 && viewPos.x >= 0 && viewPos.x <= 1 && viewPos.y >= 0 && viewPos.y <= 1)
return true;
else
return false;
}
void Update()
{
if (IsInView(transform.position))
{
Debug.Log("目前本物体在摄像机范围内");
}
else
{
Debug.Log("目前本物体不在摄像机范围内");
}
}
转载于:https://www.cnblogs.com/weiqiangwaideshijie/p/9105957.html