public float RayCastCallback(RayCastInput input, int proxyId)
{
object userData = broadPhase.GetUserData(proxyId);
Fixture fixture = (Fixture)userData;
RayCastOutput output;
fixture.RayCast(out output, ref input);
if (output.Hit)
{
float fraction = output.Fraction;
Vec2 point = (1.0f - fraction) * input.P1 + fraction * input.P2;
return(callback.ReportFixture(fixture, point, output.Normal, fraction));
}
return(input.MaxFraction);
}