[Unity] Vector3 position 여러 타겟일때 중점 찾기 Camera

Unity 게임 Tutorial을 따라하다 아주 간단하게 두 타겟 또는 그 이상의 타겟의 중점을 구하고 카메라 줌인/아웃 시키는 공식이 있길래 포스팅 한다. 너무도 간단?하다…

 

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using UnityEngine;   public class CameraControl : MonoBehaviour {     public float m_DampTime = 0.2f;                     public float m_ScreenEdgeBuffer = 4f;               public float m_MinSize = 6.5f;                       [HideInInspector] public Transform[] m_Targets;         private Camera m_Camera;                             private float m_ZoomSpeed;                           private Vector3 m_MoveVelocity;                     private Vector3 m_DesiredPosition;                       private void Awake()     {         m_Camera = GetComponentInChildren<Camera>();     }         private void FixedUpdate()     {         Move();         Zoom();     }         private void Move()     {         FindAveragePosition();           transform.position = Vector3.SmoothDamp(transform.position, m_DesiredPosition, ref m_MoveVelocity, m_DampTime);     }         private void FindAveragePosition()     {         Vector3 averagePos = new Vector3();         int numTargets = 0;           for (int i = 0; i < m_Targets.Length; i++)         {             if (!m_Targets[i].gameObject.activeSelf)                 continue;               averagePos += m_Targets[i].position;             numTargets++;         }                    if (numTargets > 0)             averagePos /= numTargets;           averagePos.y = transform.position.y;           m_DesiredPosition = averagePos;     }         private void Zoom()     {         float requiredSize = FindRequiredSize();         m_Camera.orthographicSize = Mathf.SmoothDamp(m_Camera.orthographicSize, requiredSize, ref m_ZoomSpeed, m_DampTime);     }         private float FindRequiredSize()     {         Vector3 desiredLocalPos = transform.InverseTransformPoint(m_DesiredPosition);                  float size = 0f;           for (int i = 0; i < m_Targets.Length; i++)         {             if (!m_Targets[i].gameObject.activeSelf)                 continue;               Vector3 targetLocalPos = transform.InverseTransformPoint(m_Targets[i].position);                          Vector3 desiredPosToTarget = targetLocalPos - desiredLocalPos;               size = Mathf.Max (size, Mathf.Abs (desiredPosToTarget.y));               size = Mathf.Max (size, Mathf.Abs (desiredPosToTarget.x) / m_Camera.aspect);         }                  size += m_ScreenEdgeBuffer;           size = Mathf.Max(size, m_MinSize);                  return size;     }         public void SetStartPositionAndSize()     {         FindAveragePosition();           transform.position = m_DesiredPosition;           m_Camera.orthographicSize = FindRequiredSize();     } }

사실 Vector3 + Vector3하면 각 x,y,z가 각각 합해 진다는 생각조차 하지 못했다.
메인 카메라의 이동에 사용되었다.