public bool IntersectsSphere(Sphere sphere)
{
var closestPoint = new Vector3();
// Find the point on the AABB closest to the sphere center.
this.ClampPoint(sphere.center, closestPoint);
// If that point is inside the sphere, the AABB and sphere intersect.
return(closestPoint.DistanceToSquared(sphere.center) <= (sphere.radius * sphere.radius));
}
public double DistanceSqToPoint(Vector3 point)
{
var v1 = new Vector3();
var directionDistance = v1.SubVectors(point, this.origin).Dot(this.direction);
// point behind the ray
if (directionDistance < 0)
{
return(this.origin.DistanceToSquared(point));
}
v1.Copy(this.direction).MultiplyScalar(directionDistance).Add(this.origin);
return(v1.DistanceToSquared(point));
}
public bool ContainsPoint(Vector3 point)
{
return(point.DistanceToSquared(this.center) <= this.radius * this.radius);
}
