Function firework_rs::utils::gen_points_circle

source · 
pub fn gen_points_circle(radius: isize, n: usize) -> Vec<Vec2>
Expand description

Generate random Vec2 within a circle range

Examples found in repository?
examples/vortex.rs (line 82)
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fn gen_vortex_firework(center: Vec2) -> Firework {
    let colors = vec![
        (6, 55, 63),
        (24, 90, 96),
        (47, 123, 119),
        (92, 174, 166),
        (200, 255, 255),
    ];
    let mut particles = Vec::new();
    for p in gen_points_circle(30, 45).iter() {
        particles.push(ParticleConfig::new(
            center + *p,
            Vec2::new((*p).y, -(*p).x).normalize() * 15.,
            thread_rng().gen_range(28..40),
            Duration::from_secs_f32(thread_rng().gen_range(4.5..7.0)),
            *colors.iter().choose(&mut thread_rng()).unwrap(),
        ));
    }
    let mut config = FireworkConfig::default()
        .with_ar_scale(0.05)
        .with_gravity_scale(0.)
        .with_gradient_scale(gradient)
        .with_additional_force(move |particle| {
            (center - particle.pos).normalize() * (1. / center.distance(particle.pos)) * 150.
        });
    config.set_enable_gradient(true);
    Firework {
        init_time: SystemTime::now(),
        spawn_after: Duration::ZERO,
        center,
        particles,
        config,
        form: ExplosionForm::Sustained {
            lasts: Duration::from_secs(10),
            time_interval: Duration::from_secs_f32(0.01),
            timer: Duration::ZERO,
        },
        ..Default::default()
    }
}