Split angularSensibiliy into X and Y for additional functionality

src/Cameras/babylon.arcRotateCamera.ts

@@ -11,7 +11,8 @@
         public upperBetaLimit = Math.PI;
         public lowerRadiusLimit = null;
         public upperRadiusLimit = null;
-        public angularSensibility = 1000.0;
+        public angularSensibilityX = 1000.0;
+        public angularSensibilityY = 1000.0;
         public wheelPrecision = 3.0;
         public pinchPrecision = 2.0;
         public panningSensibility: number = 50.0;
@@ -171,8 +172,8 @@
                             } else {
                                 var offsetX = evt.clientX - cacheSoloPointer.x;
                                 var offsetY = evt.clientY - cacheSoloPointer.y;
-                                this.inertialAlphaOffset -= offsetX / this.angularSensibility;
-                                this.inertialBetaOffset -= offsetY / this.angularSensibility;
+                                this.inertialAlphaOffset -= offsetX / this.angularSensibilityX;
+                                this.inertialBetaOffset -= offsetY / this.angularSensibilityY;
                             }
                             cacheSoloPointer.x = evt.clientX;
                             cacheSoloPointer.y = evt.clientY;
@@ -192,7 +193,7 @@
                             }
 
                             if (pinchSquaredDistance !== previousPinchDistance) {
-                                this.inertialRadiusOffset += (pinchSquaredDistance - previousPinchDistance) / (this.pinchPrecision * this.wheelPrecision * this.angularSensibility * direction);
+                                this.inertialRadiusOffset += (pinchSquaredDistance - previousPinchDistance) / (this.pinchPrecision * this.wheelPrecision * ((this.angularSensibilityX+this.angularSensibilityY)/2) * direction);
                                 previousPinchDistance = pinchSquaredDistance;
                             }
                             break;
@@ -213,8 +214,8 @@
                     var offsetX = evt.movementX || evt.mozMovementX || evt.webkitMovementX || evt.msMovementX || 0;
                     var offsetY = evt.movementY || evt.mozMovementY || evt.webkitMovementY || evt.msMovementY || 0;
 
-                    this.inertialAlphaOffset -= offsetX / this.angularSensibility;
-                    this.inertialBetaOffset -= offsetY / this.angularSensibility;
+                    this.inertialAlphaOffset -= offsetX / this.angularSensibilityX;
+                    this.inertialBetaOffset -= offsetY / this.angularSensibilityY;
 
                     if (!noPreventDefault) {
                         evt.preventDefault();