hL.setStartX(0);
hL.setStartY(0);
hL.setEndY(0);
hL.getStyleClass().add("magnifier-hLine");
hL.strokeWidthProperty().bind(scopeLineWidthProperty);
hL.visibleProperty().bind(scopeLinesVisibleProperty);
hL.endXProperty().bind(localRadius.multiply(2));
// Adding all parts in a container.
mainContent.getChildren().addAll(frame, viewer, vL, hL);