c# - 使 Canvas 跟随相机

Question

我想要一个 UI Canvas 跟随相机，这样它就会始终位于头部前方，并且可以像 VR 菜单一样进行交互。我正在使用以下代码来执行此操作。

public class FollowMe : MonoBehaviour
{
    public GameObject menuCanvas;
    public Camera FirstPersonCamera;
    [Range(0, 1)]
    public float smoothFactor = 0.5f;

// how far to stay away fromt he center

    public float offsetRadius   = 0.3f;
    public float distanceToHead = 4;

    public  void Update()
    {
        // make the UI always face towards the camera
        menuCanvas.transform.rotation = FirstPersonCamera.transform.rotation;

        var cameraCenter = FirstPersonCamera.transform.position + FirstPersonCamera.transform.forward * distanceToHead;

        var currentPos = menuCanvas.transform.position;

        // in which direction from the center?
        var direction = currentPos - cameraCenter;

        // target is in the same direction but offsetRadius
        // from the center
        var targetPosition = cameraCenter + direction.normalized * offsetRadius;

        // finally interpolate towards this position
        menuCanvas.transform.position = Vector3.Lerp(currentPos, targetPosition, smoothFactor);
    }
}

不幸的是， Canvas 在相机前面闪烁并且位置不正确。如何让菜单跟随摄像头移动？|

Answer 1

如果没有理由反对，您可以使用 ScreenSpace - Camera Canvas ，如所述 in the docs 。然后您可以引用 FPS 相机作为 Canvas 的渲染相机。