原文地址：(7条消息) Unity物体一直跟随在镜头前（VR/AR方面）_u010197227的博客-CSDN博客
public class CalculateWindow : MonoBehaviour { private Vector2 windowOffset = new Vector2(0.2f, 0.2f);//偏移量 public TextAnchor windowAnchor = TextAnchor.LowerCenter;//偏移类型 private Transform window;//跟随的窗体 public Transform cameraTransform;//相机 private float windowFollowSpeed = 1.5f;//跟随速度 public float distance = 0.5f;//跟随的距离 // Start is called before the first frame update protected void Awake() { window = transform; if (cameraTransform == null) cameraTransform = Camera.main.transform; }
private void OnEnable() { resetWindowPositon(); }
// Update is called once per frame void LateUpdate() { setWindowPositon(); }
private void resetWindowPositon() { window.position = CalculateWindowPosition(cameraTransform); window.rotation = cameraTransform.rotation; }
private void setWindowPositon() { float t = Time.deltaTime * windowFollowSpeed; window.position = Vector3.Lerp(window.position, CalculateWindowPosition(cameraTransform), t); window.rotation = Quaternion.Slerp(window.rotation, cameraTransform.rotation, t); }
private Vector3 CalculateWindowPosition(Transform cameraTransform) { float windowDistance = Mathf.Max(16.0f / Camera.main.fieldOfView, Camera.main.nearClipPlane + distance); Vector3 position = cameraTransform.position + (cameraTransform.forward * windowDistance); Vector3 horizontalOffset = cameraTransform.right * windowOffset.x; Vector3 verticalOffset = cameraTransform.up * windowOffset.y;
switch (windowAnchor) { case TextAnchor.UpperLeft: position += verticalOffset - horizontalOffset; break; case TextAnchor.UpperCenter: position += verticalOffset; break; case TextAnchor.UpperRight: position += verticalOffset + horizontalOffset; break; case TextAnchor.MiddleLeft: position -= horizontalOffset; break; case TextAnchor.MiddleRight: position += horizontalOffset; break; case TextAnchor.LowerLeft: position -= verticalOffset + horizontalOffset; break; case TextAnchor.LowerCenter: position -= verticalOffset; break; case TextAnchor.LowerRight: position -= verticalOffset - horizontalOffset; break; }
return position; } }
