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

using C as C;

class Hand
{

var length;
var width;
var color;
var vert = new [5];

public function initialize(length, width, color)
{

    me.length = length;
    me.width = width;
    me.color = color;

    var w2 = width / 2;
    var w3 = width / 2.4;
    var mid = length * 0.6;
    vert[0] = [ -w2, 0 ];
    vert[1] = [ -w2 - w3, -mid ];
    vert[2] = [ 0, -length ];
    vert[3] = [ +w2 + w3, -mid ];
    vert[4] = [ +w2, 0 ];
}

private function get_bb(points as Array< Array<Number or Float> >) as Array< Array<Number or Float> > {
    var min = [9999, 9999] as Array<Number>;
    var max = [0,0] as Array<Number>;

    for (var i = 0; i < points.size(); ++i) {
        if (points[i][0] < min[0]) {
            min[0] = points[i][0];
        }

        if (points[i][1] < min[1]) {
            min[1] = points[i][1];
        }

        if (points[i][0] > max[0]) {
            max[0] = points[i][0];
        }

        if (points[i][1] > max[1]) {
            max[1] = points[i][1];
        }
    }

    return [min, max] as Array< Array<Number or Float> >;
}

public function show(dc, val, max, abbr, clipit)
{

    C.set_fill(dc, color);
    var h = dc.getFontHeight(Gfx.FONT_TINY);
    if (abbr) {
        dc.drawText(C.center_x, C.center_y - C.dot_sz - h, Gfx.FONT_XTINY, abbr, Gfx.TEXT_JUSTIFY_CENTER);
    }
    val *= C.ccw;
    var a = (((Math.PI * 2) * val) / max) + (Math.PI/2);
    var v = C.translate(vert, C.center_x, C.center_y, a);
    if (clipit) {
        var clip = get_bb(v);
        var bb_w= clip[1][0] - clip[0][0] + 1;
        var bb_h= clip[1][1] - clip[0][1] + 1;
        dc.setClip(clip[0][0], clip[0][1], bb_w, bb_h);
    }
    dc.fillPolygon(v);
}
}