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Target layer: Polygon

Description:  Makes the internal angles of a polygon square (0,90, 180 or 270) if the original angles are closer to these values than the user specified angle tolerance. The tool uses algorithm that adjusts first the angles, then adjusts the length of the sides of the polygon using the Crandall Rule.

Notes: 

• The Angle tolerance should be larger then 0 and smaller than 45 degrees.
• There will be at least one polygon side that will not change its direction. This side will be the closest side to the click point with which the user selects the polygon.
• The tool will not always create good results. This is the reason it can be used on a single polygon only. The user need to evaluate the result before accepting it.
• It is strongly recommended to use the tool on standalone polygons only. If applied to polygons that do have neighbors it might create gaps and overlaps between the adjacent polygons.
• Use the tool only on polygons that naturally should have square angles (buildings, etc.). 

Hot Keys (Pressing these keys when the tool is active will allow changing  the parameters used by the function): 

• "S" - allows adjusting the Angle Tolerance

Example: 

Before	Result

Copyright © Ianko Tchoukanski