Revert math.floor unneeded changes

the math.floor does not solve the problem of zooming into one point
Modified line 28 "com.translate((int)Math.floor((xDifference * getZoomValue())), (int)Math.floor(yDifference * getZoomValue()));"

Author: chenggong03

src/actions/ZoomAction.java

@@ -25,8 +25,7 @@ public void performAction() {
 		for ( PaintComponent com: panel.getPaintComponents() ) {
 			int xDifference = com.getX() - centerX;
 			int yDifference = com.getY() - centerY;
-			
-			com.translate((int)Math.floor((xDifference * getZoomValue())), (int)Math.floor(yDifference * getZoomValue()));
+			com.translate((int)(xDifference * getZoomValue()), (int)(yDifference * getZoomValue()));
 		}
 		panel.repaint();
 	}