Re: Confusion about splitting classes to allow sharing of resources



m.a.stijnman@xxxxxxxxxxxxxx wrote: 

probably should generate an error when the knot vectors are shared. I
imagine further that any spline that share a knot vector that is not
explicitly expanded (such as Splines for p and q) gets expanded with a
default value - or it might be better to require all splines to be
given a new value explicitely
before more points can be added.


Share the KnotVector class via reference counted pointers. If the reference count is not one when adding a point to a curve then copy the KnotVector and replace the reference pointer in the curve with the copy.

Alternatively avoid all the complication and don't bother sharing. Unless you can share vast numbers of KVs the amount of memory saving will be fairly minimal.

.

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