Function ncollide2d::query::nonlinear_time_of_impact_ball_ball

pub fn nonlinear_time_of_impact_ball_ball<N: RealField>(
    motion1: &impl RigidMotion<N> + ?Sized, 
    b1: &Ball<N>, 
    motion2: &impl RigidMotion<N> + ?Sized, 
    b2: &Ball<N>, 
    max_toi: N, 
    target_distance: N
) -> Option<TOI<N>>

Non-linear Time Of Impact of two balls under a rigid motion (translation + rotation).