import Toybox.Graphics;
import Toybox.Lang;
import Toybox.Math;

function fillSuperellipse(dc as Dc, start as Point2D, direction as Point2D, length as Float, width as Float) {
    var halfWidth = min(start) * width / 2.0;
    var perpendicular = [-direction[1], direction[0]] as Point2D;
    var end = [start[0] + direction[0] * length, start[1] + direction[1] * length];

    // body part
    dc.fillPolygon([
        [start[0] + perpendicular[0] * halfWidth, start[1] + perpendicular[1] * halfWidth],
        [start[0] - perpendicular[0] * halfWidth, start[1] - perpendicular[1] * halfWidth],
        [end[0] - perpendicular[0] * halfWidth, end[1] - perpendicular[1] * halfWidth],
        [end[0] + perpendicular[0] * halfWidth, end[1] + perpendicular[1] * halfWidth],
    ]);

    // ends
    dc.fillCircle(start[0], start[1], halfWidth);
    dc.fillCircle(end[0], end[1], halfWidth);
}