double centerX = centerPoint.getX(), centerY = centerPoint.getY();
double deltaX = direction.getX(), deltaY = direction.getY();
- double x0 = centerX - l/2 * deltaX + offset * deltaY;
- double y0 = centerY - l/2 * deltaY - offset * deltaX;
- double x1 = centerX + (l/2 - w) * deltaX + offset * deltaY;
- double y1 = centerY + (l/2 - w) * deltaY - offset * deltaX;
+ // Ensure the line is always rendered on top of the edge
+ // to prevent overlap with static info rendered below it.
+ double odx = offset * deltaY;
+ double ody = offset * deltaX;
+ if (odx < 0) {
+ odx = -odx;
+ ody = -ody;
+ }
+
+ double x0 = centerX - l/2 * deltaX + ody;
+ double y0 = centerY - l/2 * deltaY - odx;
+ double x1 = centerX + (l/2 - w) * deltaX + ody;
+ double y1 = centerY + (l/2 - w) * deltaY - odx;
g2d.draw(new Line2D.Double(x0, y0, x1, y1));