pub struct A3da {
    pub camera_root: Vec<CameraRoot>,
}

#[derive(Debug, Default)]
pub struct CameraRoot {
    pub interest: ModelTransform,
    pub model_transform: ModelTransform,
    pub view_point: ViewPoint,
}

#[derive(Debug, Default)]
pub struct ViewPoint {
    is_horizontal_fov: bool,
    aspect: Option<f32>,
    camera_aperture_h: Option<f32>,
    camera_aperture_v: Option<f32>,
    fov: Key,
    roll: Key,
    focal_length: Key,
    pub model_transform: ModelTransform,
}

#[derive(Debug, Default)]
pub struct ModelTransform {
    pub scale: Vec3<Key>,
    pub rotation: Vec3<Key>,
    pub translation: Vec3<Key>,
    pub visiblity: Key,
}

///Generic keyframe
#[derive(Debug)]
pub enum Key {
    None,
    Pose(f32),
    Mode34(Vec<SmoothKeyframe>),
}

///Keyframe with hermite interpolation
#[derive(Debug, Default)]
pub struct SmoothKeyframe {
    pub frame: f32,
    pub value: f32,
    pub tangent_1: f32,
    pub tangent_0: f32,
}

impl Default for Key {
    fn default() -> Self {
        Self::None
    }
}

///A 3D vector of T
#[derive(Debug, Default)]
pub struct Vec3<T>{
    pub x: T,
    pub y: T,
    pub z: T,
}