bugfix: moveInside always moved in the positive direction for the corner case (CURA-579)
bugfix: moveInside always moved in the positive direction for the corner case (CURA-579)

totalretribution/CuraEngine,Ultimaker/CuraEngine,totalretribution/CuraEngine,Ultimaker/CuraEngine,alephobjects/CuraEngine,totalretribution/CuraEngine,alephobjects/CuraEngine,ROBO3D/CuraEngine,ROBO3D/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine