Re: [ROOT] Strange behaviour of TPolyMarker3D

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Hi Thomas,

When adding a new point to a TPolyMarker3D object, the current number
of points is automatically doubled in the point number is greater
than the number of points. The previous logic was quite innefficient, 
increasing the array size by just 1.
  GetN() returns the total allocation.
  GetLastPoint return the last point number
so the total number of real points is GetLastPoint()+1
Same procedure in TPolyLine3D.

Rene Brun




Thomas Bretz wrote:
> 
> Hi all,
> 
> in 3.02/07 (compared to 3.01/06) I encountered the following behaviour:
> The number of the poly markers is TPolyMarker3D is not increased by 1 if
> you use SetNextPoint but it is always a power of two. This makes the
> usage of GetN completely sensless!
> 
> Can this be fixed please?
> 
> Best regards,
> Thomas.

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