Macro aframe::primitive

macro_rules! primitive {
    (
        components: $(($name:expr, $cmp:expr)),*
        mappings: $(($map_name:expr, $map_expr:expr)),*
    ) => { ... };
}

Top-level macro to define a new primitive.

let prim = primitive!
{
    components: 
    ("position", component::Position{ x: 0.0, y: -2.0, z: -1.0 }),
    ("rotation", component::Rotation { x: 0.0, y: 45.0, z: 0.0  }),
    ("geometry", component!(component::Geometry)),
    ("animation__click", component!
    { 
        component::Animation,
        property: Cow::Borrowed("rotation"),
        from: Cow::Borrowed("0 45 0"),
        to: Cow::Borrowed("0 405 0"),
        start_events: component::List(Cow::Borrowed(&[Cow::Borrowed("click")])),
        dur: 900,
        easing: component::Easing::EaseOutCubic
    }),
    ("shadow", component!(component::Shadow)),
    ("material", component!
    {
        component::Material, 
        props: component::MaterialProps(Cow::Owned(vec!((Cow::Borrowed("src"), Cow::Borrowed("#ramen")))))
    })
    mappings: 
    ("src", "material.src"), 
    ("depth", "geometry.depth"), 
    ("height", "geometry.height"), 
    ("width", "geometry.width")
};
unsafe
{
    match prim.register("ramen-cube")
    {
        Ok(_) => (),
        Err(err) => yew::services::ConsoleService::log(&format!("{:?}", err))
    }
}