public static List <Intersection> CheckIntersection(Sphere sphere, PlaneCollider plane)
{
var intersections = new List <Intersection> ();
double dist = Vec3.Dot(sphere.x, plane.normal) - plane.d;
double d = Math.Abs(dist) - sphere.r;
if (d < 0)
{
var p = sphere.x - (Vec3.Dot(plane.normal, sphere.x) + plane.d) * plane.normal;
intersections.Add(new Intersection {
entity = plane.self,
distance = -d,
normal = plane.normal,
point = p
});
}
return(intersections);
}
public static List <Intersection> CheckIntersection(IEnumerable <Particle> ps, PlaneCollider pl)
{
List <Intersection> intersections = new List <Intersection> ();
foreach (var p in ps)
{
double d = Math.Abs(Vec3.Dot(p.x, pl.normal) - pl.d);
if (d < PlaneCollider.thickness)
{
Intersection data = new Intersection {
entity = p,
distance = PlaneCollider.thickness - d,
normal = pl.normal,
point = (p.x - (Vec3.Dot(pl.normal, p.x) + pl.d) * pl.normal) + PlaneCollider.thickness * pl.normal
};
intersections.Add(data);
}
}
return(intersections);
}