case1

Assets/Samples/Cinemachine/2.10.5/Cinemachine Example Scenes/Scenes/2D/MouseScrollZoom2D.cs

@@ -0,0 +1,59 @@
+using System;
+using UnityEngine;
+
+namespace Cinemachine.Examples
+{
+    [RequireComponent(typeof(CinemachineVirtualCamera))]
+    [SaveDuringPlay] // Enable SaveDuringPlay for this class
+    public class MouseScrollZoom2D : MonoBehaviour
+    {
+        [Range(0, 10)]
+        public float ZoomMultiplier = 1f;
+        [Range(0, 100)]
+        public float MinZoom = 1f;
+        [Range(0, 100)]
+        public float MaxZoom = 50f;
+
+        CinemachineVirtualCamera m_VirtualCamera;
+        float m_OriginalOrthoSize;
+
+        void Awake()
+        {
+            m_VirtualCamera = GetComponent<CinemachineVirtualCamera>();
+            m_OriginalOrthoSize = m_VirtualCamera.m_Lens.OrthographicSize;
+
+#if UNITY_EDITOR
+            // This code shows how to play nicely with the VirtualCamera's SaveDuringPlay functionality
+            SaveDuringPlay.SaveDuringPlay.OnHotSave -= RestoreOriginalOrthographicSize;
+            SaveDuringPlay.SaveDuringPlay.OnHotSave += RestoreOriginalOrthographicSize;
+#endif
+        }
+
+#if UNITY_EDITOR
+        void OnDestroy()
+        {
+            SaveDuringPlay.SaveDuringPlay.OnHotSave -= RestoreOriginalOrthographicSize;
+        }
+        
+        void RestoreOriginalOrthographicSize()
+        {
+            m_VirtualCamera.m_Lens.OrthographicSize = m_OriginalOrthoSize;
+        }
+#endif
+
+        void OnValidate()
+        {
+            MaxZoom = Mathf.Max(MinZoom, MaxZoom);
+        }
+
+        void Update()
+        {
+#if ENABLE_LEGACY_INPUT_MANAGER
+            float zoom = m_VirtualCamera.m_Lens.OrthographicSize + Input.mouseScrollDelta.y * ZoomMultiplier;
+            m_VirtualCamera.m_Lens.OrthographicSize = Mathf.Clamp(zoom, MinZoom, MaxZoom);
+#else
+            InputSystemHelper.EnableBackendsWarningMessage();
+#endif
+        }
+    }
+}