remove the emtpy constructor of Point and Rectangle.
alter the package of Rectangle.
replace some package imported, also the way they are used.
Modify the name of some packages.
Add such files copied from jsi lib that will be modified to help implement an r-tree indexing n-dimension data.
Parameterize the references to the generic type TIntObjectHashMap<V>. Import Node from si.shape. Import IntProcedure from si other than jsi.
cancel a private member.
to fit the api of Rectangle from si.shape
to use init(null)
reindent
reindent a method
add a method
change api a little
add methods. change api a little
test RTree code