using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace UnityCommon
{
    public class MotionlessState : CameraState
    {
        private Vector3 position;
        private Quaternion rotation;
        public MotionlessState(Camera camera, Vector3 p, Quaternion r) : base(camera)
        {
            position = p;
            rotation = r;
        }
        private float clipNearOld = 0.1f;
        public override void Enter()
        {
            base.Enter();
            m_camera.transform.SetParent(null);//保持父节点为空，解决相机漂移问题
            clipNearOld = m_camera.nearClipPlane;
            m_camera.nearClipPlane = 0.1f;
            SetCameraPosition(position, rotation, () =>
            {
            });
        }
        public override void Exit()
        {
            base.Exit();
            m_camera.nearClipPlane = clipNearOld;
        }
        private const float speedZoom = 0.5f;
        public override void OnZoom(float zoom)
        {
            base.OnZoom(zoom);
            m_camera.transform.Translate(0, 0, zoom * speedZoom);
        }
    }
}