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getMBL() Function

 Note: This function can only be used in a Trusted Macro

Introduced in version 1.9.0
Gets the Movement Blocking Layer (MBL) shapes for the area specified in the shape parameter.



This function retrieves the MBL found in the given shape(s).


  • shape - A JSON object or array of JSON objects, as described in drawMBL(). If an array, gets all the MBL within all provided shapes, otherwise just the MBL in the single provided shape.
  • format - OPTIONAL Boolean. Returns a JSON object if false(0), or a JSON array of coordinates if true(1). In either case, the returned shape covers the MBL found in the area. Defaults to false(0)


[h:rectangle = '{"shape":"rectangle","x":50,"y":50,"w":100,"h":200,"r":45,"fill":1,"thickness":1,"scale":0}']
[r:mblData   = getMBL(rectangle , 0)]

See Also