sun.js

function flat_piece(r, h, a, o) {
    var shape = CAG.fromPoints([
        [0, 0],
        [r, 0],
        [cos(a) * r, sin(a) * r],
    ]);
    shape = linear_extrude({height: h}, shape);
    return shape.rotateZ(o);
}

function round_piece(r, h, a, o) {
    var shape = CAG.circle({
        center: [0, 0],
        radius: r,
        resolution: 360,
    });
    shape = linear_extrude({height: h}, shape);
    return intersection(shape, flat_piece(r * 2, h, a, 0)).rotateZ(o);
}

function half_circle(r, h) {
    var shape = CAG.circle({
        center: [0, 0],
        radius: r,
        resolution: 360,
    });
    shape = linear_extrude({height: h}, shape);
    square = CAG.fromPoints([
        [-r, 0],
        [r, 0],
        [r, r],
        [-r, r],
    ]);
    square = linear_extrude({height: h}, square);
    return intersection(shape, square);
}

function horizon(w, h, d) {
    var shape = CAG.fromPoints([
        [-w/2, 0],
        [w/2, 0],
        [w/2, -h],
        [-w/2, -h],
    ]);
    shape = linear_extrude({height: d}, shape);
    return shape;
}

function main() {
    var shapes = [];
    var a = 9.4736842105;
    for (var o = 0; o < 180 - a / 2; o += a * 2) {
        var shape = round_piece(12, 0.5, a, o);
        shapes.push(shape.setColor([0.75, 0.44, 0.22]));
    }
    for (var o = a; o < 180 - a / 2; o += a * 2) {
        var r = Math.random() * 3 + 13;
        var shape = flat_piece(r, 0.75, a, o);
        shapes.push(shape.setColor([0.33, 0.25, 0.20]));
    }
    shapes.push(half_circle(4, 1).setColor([0.45, 0.16, 0.29]));
    var h1 = horizon(26, 2, 1);
    var h2 = horizon(26, 6, 1);
    h2 = h2.translate([0, 1, 0]).rotateX(20);
    shapes.push(h1.intersect(h2).setColor([0.96, 0.80, 0.59]));//(26, 2, 1).setColor([0.96, 0.80, 0.59]));
    return union(shapes);
}