Slacktree
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Slacktree offers a KD-tree like tree-structure speicalized for TPointArrays (2D Points). 

Adds fast alteratives to the most popular functions found in the AND_TPA.dll ``FilterTPADistTPA``. 
The library loaded may not work properly on Linux distors.


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TPointArray.PointsInRangeOf
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.. code-block:: pascal

 
  function TPointArray.PointsInRangeOf(Other: TPointArray; MinDist, MaxDist: Double): TPointArray; constref;

Returns all the points from `self` that are within range of any point in `other`.
The parameters `mindist` and `maxdist` determine what "within range" means.


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TPointArray.PointsInRangeOf
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
.. code-block:: pascal

 
  function TPointArray.PointsInRangeOf(Other: TPointArray; minDx, minDy, maxDx, maxDy: Int32): TPointArray; constref; overload;

Same as the above but lets you specify X- and Y-wise min & max distance separately.


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