Further prototyping for inspection window. added an example for item preview

Assets/Inventory System/Scripts/Inventory/InventorySystem.cs

@@ -295,6 +295,7 @@ namespace SimpleInventorySystem
         public Transform DefaultItemSpawn;
         [HideInInspector] public bool IsDraggingItem;
         public List<GameObject> hResults;
+        public ItemViewer itemViewer;
 
         public enum States { Undefined, Loot, PickUp };
         public States CurrentState = States.Undefined;
@@ -388,7 +389,13 @@ namespace SimpleInventorySystem
                 return Instantiate(InventorySystem.instance.StorageWindowPrefab, inventoryUI.transform);
             }
             else if(windowType == nameof(InspectionWindowUI) && InventorySystem.instance.InspectionWindowPrefab.GetComponent<InspectionWindowUI>() != null)
+            {
+                if(itemViewer != null)
+                {
+                    itemViewer.OpenCamera();
+                }
                 return Instantiate(InventorySystem.instance.InspectionWindowPrefab, inventoryUI.transform);
+            }
             else
                 return null;
         }

Assets/Inventory System/Scripts/Inventory/ItemViewer.cs

@@ -0,0 +1,24 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class ItemViewer : MonoBehaviour
+{
+    public Camera viewerCamera;
+    public GameObject cameraHolder;
+
+    public void OpenCamera()
+    {
+        viewerCamera.gameObject.SetActive(true);
+    }
+
+    public void CloseCamera()
+    {
+        viewerCamera.gameObject.SetActive(false);
+    }
+
+    public void Update()
+    {
+        
+    }
+}

Assets/Inventory System/Scripts/Inventory/ItemViewer.cs.meta

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Assets/Inventory System/Scripts/Inventory/MouseOrbitImproved.cs

@@ -0,0 +1,101 @@
+/*
+Original script from: https://wiki.unity3d.com/index.php/MouseOrbitImproved
+Just a few line modification by me: https://www.youtube.com/channel/UCjAFR8Gm-7GsMvtC_scsp8A/
+*/
+
+
+using UnityEngine;
+using System.Collections;
+
+[AddComponentMenu("Camera-Control/Mouse Orbit with zoom")]
+public class MouseOrbitImproved : MonoBehaviour
+{
+
+    public Transform target;
+    public float distance = 5.0f;
+    public float xSpeed = 120.0f;
+    public float ySpeed = 120.0f;
+
+    public float yMinLimit = -20f;
+    public float yMaxLimit = 80f;
+
+    public float distanceMin = .5f;
+    public float distanceMax = 15f;
+
+    private Rigidbody rigidbody;
+
+    float x = 0.0f;
+    float y = 0.0f;
+
+    bool orbitable;
+
+    // Use this for initialization
+    void Start()
+    {
+        Vector3 angles = transform.eulerAngles;
+        x = angles.y;
+        y = angles.x;
+
+        rigidbody = GetComponent<Rigidbody>();
+
+        // Make the rigid body not change rotation
+        if (rigidbody != null)
+        {
+            rigidbody.freezeRotation = true;
+        }
+    }
+
+    void Update()
+    {
+        /*
+        if (Input.GetKeyDown(KeyCode.LeftControl) == true)
+        {
+            orbitable = true;
+        }
+        else if (Input.GetKeyUp(KeyCode.LeftControl) == true)
+        {
+            orbitable = false;
+        }
+        */
+
+        if (Input.GetMouseButtonDown(0))
+            orbitable = true;
+        else if (Input.GetMouseButtonUp(0))
+            orbitable = false;
+
+        if (orbitable)
+        {
+            if (target)
+            {
+                x += Input.GetAxis("Mouse X") * xSpeed * distance * Time.deltaTime;
+                y -= Input.GetAxis("Mouse Y") * ySpeed * Time.deltaTime;
+
+                y = ClampAngle(y, yMinLimit, yMaxLimit);
+
+                Quaternion rotation = Quaternion.Euler(y, x, 0);
+
+                distance = Mathf.Clamp(distance - Input.GetAxis("Mouse ScrollWheel") *Time.deltaTime, distanceMin, distanceMax);
+
+                RaycastHit hit;
+                if (Physics.Linecast(target.position, transform.position, out hit))
+                {
+                    distance -= hit.distance;
+                }
+                Vector3 negDistance = new Vector3(0.0f, 0.0f, -distance);
+                Vector3 position = rotation * negDistance + target.position;
+
+                transform.rotation = rotation;
+                transform.position = position;
+            }
+        }
+    }
+
+    public static float ClampAngle(float angle, float min, float max)
+    {
+        if (angle < -360F)
+            angle += 360F;
+        if (angle > 360F)
+            angle -= 360F;
+        return Mathf.Clamp(angle, min, max);
+    }
+}

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