public int ClosestPointIndex(Point3d searchPoint)
{
ClosestPointSearchData closestPointSearchData = new ClosestPointSearchData(Points);
Tree.Search(new Sphere(searchPoint, searchPoint.DistanceTo(Points[0] * 1.1)), ClosestPointCallback, closestPointSearchData);
return(closestPointSearchData.Index);
}
private static void ClosestPointCallback(object sender, RTreeEventArgs e)
{
ClosestPointSearchData closestPointSearchData = e.Tag as ClosestPointSearchData;
if (closestPointSearchData != null)
{
Point3d val = closestPointSearchData.Points[e.Id];
Sphere searchSphere = e.SearchSphere;
double num = val.DistanceTo(searchSphere.Center);
if (closestPointSearchData.Index == -1 || num < closestPointSearchData.Distance)
{
searchSphere = e.SearchSphere;
e.SearchSphere = new Sphere(searchSphere.Center, num);
closestPointSearchData.Distance = num;
closestPointSearchData.Index = e.Id;
}
}
}