use crate::vector::Vec3;

pub trait Camera
{
    /// Returns the current camera position.
    fn position(&self) -> Vec3<f32>;

    /// Returns the position of the camera target.
    fn target(&self) -> Vec3<f32>;

    /// Returns the global direction upwards.
    ///
    /// The default implementation which returns [`Vec3::UP`] should be fine in most
    /// cases.
    fn global_up(&self) -> Vec3<f32>
    {
        Vec3::UP
    }
}