Merge pull request #747 from hyoo-ru/touch-zoom

$mol_touch zoom_next return fix

Author: zerkalica

touch/touch.view.ts

@@ -303,9 +303,9 @@ namespace $.$$ {
 			if( action_type === 'zoom' ) {
 
 				const zoom_prev = this.zoom() || 0.001
-				const zoom_next = zoom_prev * ( 1 - .001 * Math.min( event.deltaY, 100 ) )
+				let zoom_next = zoom_prev * ( 1 - .001 * Math.min( event.deltaY, 100 ) )
+				zoom_next = this.zoom( zoom_next )
 				const mult = zoom_next / zoom_prev
-				this.zoom( zoom_next )
 
 				const pan_prev = this.pan()
 				const center = this.pointer_center()!