public void render(Wall wall) {
Stroke stroke = graphics.getStroke();
graphics.setStroke(new BasicStroke(10));
Vector from = wall.from().add(viewPoint);
Vector to = wall.to().add(viewPoint);
graphics.drawLine((int) from.x(), (int) from.y(), (int) to.x(), (int) to.y());
graphics.setStroke(stroke);
if (showWallNormals) {
Vector centre = wall.centre().add(viewPoint);
Vector normal = wall.normal();
int x = (int) centre.x();
int y = (int) centre.y();
int toX = x + (int) (normal.x() * 10);
int toY = y + (int) (normal.y() * 10);
graphics.drawLine(x, y, toX, toY);
}
}
