// Edit any number: the scene recompiles as you type.
declare function dot(x: f32, y: f32, r: f32, a: f32): void;

struct Vec2 {
    x: f32;
    y: f32;
}

function orbit(i: i32, t: f32): Vec2 {
    const k = <f32>i;
    const angle = t * (0.3 + k * 0.004) + k * 2.399;
    const radius = 16.0 + k * 0.42;
    let p = Vec2();
    p.x = Mathf.cos(angle) * radius;
    p.y = Mathf.sin(angle) * radius * 0.6;
    return p;
}

export function frame(t: f32): void {
    const count = 360;
    for (let i = 0; i < count; i++) {
        const p = orbit(i, t);
        const fade = <f32>i / <f32>count;
        dot(p.x, p.y, 1.0 + fade * 1.6, 0.25 + fade * 0.75);
    }
}