Fix scale calculation about view offset in OrthographicCamera

In scaleW / zoomW, there are (this.view.width) in the numerator and denominator

src/cameras/OrthographicCamera.js

@@ -105,15 +105,13 @@ OrthographicCamera.prototype = Object.assign( Object.create( Camera.prototype ),
 
 		if ( this.view !== null && this.view.enabled ) {
 
-			var zoomW = this.zoom / ( this.view.width / this.view.fullWidth );
-			var zoomH = this.zoom / ( this.view.height / this.view.fullHeight );
-			var scaleW = ( this.right - this.left ) / this.view.width;
-			var scaleH = ( this.top - this.bottom ) / this.view.height;
-
-			left += scaleW * ( this.view.offsetX / zoomW );
-			right = left + scaleW * ( this.view.width / zoomW );
-			top -= scaleH * ( this.view.offsetY / zoomH );
-			bottom = top - scaleH * ( this.view.height / zoomH );
+			var scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;
+			var scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;
+
+			left += scaleW * this.view.offsetX;
+			right = left + scaleW * this.view.width;
+			top -= scaleH * this.view.offsetY;
+			bottom = top - scaleH * this.view.height;
 
 		}