double x = event.getX();
double y = event.getY();
isRedraw = isAccessible(x, y);
});
canvas.addEventHandler(MouseEvent.MOUSE_DRAGGED, (MouseEvent event) -> {
processMouse(event.getX(), event.getY());
});
canvas.addEventHandler(MouseEvent.MOUSE_RELEASED, (MouseEvent event) -> {
isRedraw = false;