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use na::RealField;

use crate::interpolation::RigidMotion;
use crate::query::{self, TOIDispatcher, Unsupported, TOI};
use crate::shape::{Ball, Shape};

/// Computes the smallest time of impact of two shapes under translational movement.
pub fn nonlinear_time_of_impact<N: RealField + Copy>(
    dispatcher: &dyn TOIDispatcher<N>,
    motion1: &dyn RigidMotion<N>,
    g1: &dyn Shape<N>,
    motion2: &dyn RigidMotion<N>,
    g2: &dyn Shape<N>,
    max_toi: N,
    target_distance: N,
) -> Result<Option<TOI<N>>, Unsupported> {
    if let (Some(b1), Some(b2)) = (g1.as_shape::<Ball<N>>(), g2.as_shape::<Ball<N>>()) {
        Ok(query::nonlinear_time_of_impact_ball_ball(
            motion1,
            b1,
            motion2,
            b2,
            max_toi,
            target_distance,
        ))
    } else if let (Some(s1), Some(s2)) = (g1.as_support_map(), g2.as_support_map()) {
        Ok(query::nonlinear_time_of_impact_support_map_support_map(
            motion1,
            s1,
            motion2,
            s2,
            max_toi,
            target_distance,
        ))
    } else if let Some(c1) = g1.as_composite_shape() {
        Ok(query::nonlinear_time_of_impact_composite_shape_shape(
            dispatcher,
            motion1,
            c1,
            motion2,
            g2,
            max_toi,
            target_distance,
        ))
    } else if let Some(c2) = g2.as_composite_shape() {
        Ok(query::nonlinear_time_of_impact_shape_composite_shape(
            dispatcher,
            motion1,
            g1,
            motion2,
            c2,
            max_toi,
            target_distance,
        ))
    /* } else if let (Some(p1), Some(s2)) = (g1.as_shape::<Plane<N>>(), g2.as_support_map()) {
    //        query::nonlinear_time_of_impact_plane_support_map(m1, vel1, p1, m2, vel2, s2)
            unimplemented!()
        } else if let (Some(s1), Some(p2)) = (g1.as_support_map(), g2.as_shape::<Plane<N>>()) {
    //        query::nonlinear_time_of_impact_support_map_plane(m1, vel1, s1, m2, vel2, p2)
            unimplemented!() */
    } else {
        Err(Unsupported)
    }
}