private void renderDirectionArrow(Graphics g) {
if (widthArrow < 0) g.setColor(new Color(0, 0, 255, 150));
else g.setColor(new Color(255, 0, 0, 150));
g.fillPolygon(
xPositionsArrow, yPositionsArrow, Math.min(xPositionsArrow.length, yPositionsArrow.length));
g.setColor(new Color(0, 0, 0, 255));
g.drawPolygon(
xPositionsArrow, yPositionsArrow, Math.min(xPositionsArrow.length, yPositionsArrow.length));
}
