Accept separate translation/rot/scale for an animation

[bmatthieu3]

Hello,

I would like to know if it can be possible to obtain for each animation the translation & scaling vectors + the quaternion instead of the final matrix4x4. Maybe we could create an enum

enum Transform {
    // Either the final transform
    Matrix(Matrix4<f32>),
    // Or its decomposed form
    LocRotScale {
        t: Vector3<f32>,
        r: Quaternion<f32>,
        s: Vector3<f32>,
    }
}

#[derive(Debug)]
pub struct Animation {
    ///
    /// The node (joint) this animation is targeting
    ///
    pub target: String,

    ///
    /// Times for each sample (in seconds)
    ///
    pub sample_times: Vec<f32>,

    ///
    /// Node pose transforms for each sample.
    /// Column-major.
    ///
    pub sample_poses: Vec<Transform>,
}

I propose this because I think it is more easy to interpolate between keyframes if we have 2 LocRotScale than 2 Matrix4. I suppose there may be some problems when directly interpolating the coeffs of a Matrix4 or maybe I am wrong ?

best,