模型旋转预览

Assets/Scripts/UI/Common/ModelViewer/ModelViewRenderImage.cs

@@ -25,7 +25,7 @@ namespace NBF
         int _width;
         int _height;
         bool _cacheTexture;
-        Vector3 _rotating;
+        // Vector3 _rotating;
 
         const int RENDER_LAYER = 0;
         const int HIDDEN_LAYER = 10;
@@ -80,7 +80,7 @@ namespace NBF
             ViewerSettings = settings;
 
             Object prefab = Resources.Load(model);
-            if(prefab == null) return;
+            if (prefab == null) return;
             GameObject go = ((GameObject)Object.Instantiate(prefab));
             var joint = go.GetComponent<Joint>();
             if (joint != null)
@@ -111,7 +111,7 @@ namespace NBF
                 _model = null;
             }
 
-            _rotating = Vector3.zero;
+            // _rotating = Vector3.zero;
         }
 
 
@@ -205,11 +205,11 @@ namespace NBF
 
         void Render(object param = null)
         {
-            if (_rotating != Vector3.zero && this.modelRoot != null)
-            {
-                // 使用 Quaternion 来避免欧拉角带来的问题
-                modelRoot.Rotate(_rotating, Space.World);
-            }
+            // if (_rotating != Vector3.zero && this.modelRoot != null)
+            // {
+            //     // 使用 Quaternion 来避免欧拉角带来的问题
+            //     modelRoot.Rotate(_rotating, Space.World);
+            // }
 
             SetLayer(_root.gameObject, RENDER_LAYER);
 
@@ -236,18 +236,51 @@ namespace NBF
 
         #region 旋转
 
-        public void StartRotate(Vector3 delta)
+        // 在 ModelViewRenderImage 中添加新字段
+        private Vector2 _lastMousePosition;
+
+        private bool _isDragging;
+
+        public void StartRotate(Vector2 currentMousePosition)
         {
-            _rotating = delta;
+            _lastMousePosition = currentMousePosition;
+            _isDragging = true;
+        }
+
+        public void UpdateRotation(Vector2 currentMousePosition)
+        {
+            if (!_isDragging || modelRoot == null || _camera == null) return;
+
+            Vector2 delta = currentMousePosition - _lastMousePosition;
+
+            // 使用适中的灵敏度
+            float sensitivity = 0.2f;
+            float rotX = -delta.y * sensitivity;
+            float rotY = -delta.x * sensitivity;
+
+            Quaternion yRotation = Quaternion.AngleAxis(rotY, _camera.transform.up);
+            Quaternion xRotation = Quaternion.AngleAxis(rotX, _camera.transform.right);
+
+            // 组合旋转并应用
+            modelRoot.rotation = yRotation * xRotation * modelRoot.rotation;
+
+            _lastMousePosition = currentMousePosition;
         }
 
         public void StopRotate()
         {
-            _rotating = Vector3.zero;
+            _isDragging = false;
+        }
+
+        // 重置到初始状态的方法
+        public void ResetToInitialRotation()
+        {
+            modelRoot.localRotation = Quaternion.identity;
+            _isDragging = false;
         }
 
         #endregion
-        
+
 
         #region MyRegion