using Toybox.Graphics as Gfx;
using Toybox.Math as Math;

using C as C;

class HandIb
{

var length;
var color;

var vert = new [3];

public function initialize(length, color)
{

    me.length = length;
    me.color = C.alpha(color, 0xff);

    //
    // Small hash marks ro 7.2 deg apart, change the dial
    // layout with different hash marks and this calculation
    // needs to change
    //
    var width = get_width(length, 7.2);
    var w2 = width / 2;
    vert[0] = [ -w2, -length ];
    vert[1] = [ w2, -length ];
    vert[2] = [ 0, -length + width ];
}

function get_width(len, d)
{

    var r = Math.toRadians(7.2) / 2;
    var p1 = C.to_cart(len, -r);
    var p2 = C.to_cart(len,  r);
    return p2[1] - p1[1];
}

public function show(dc, val, max)
{

    C.set_fill(dc, color);
    var d = (360 * val) / max;
    var v = C.translate(vert, C.cx, C.cy, d);
    dc.fillPolygon(v);
}

}