[Refactoring] Add marker size method instead of using magic constant
[Refactoring] Simplify worldPosToImageSpace and cellTopLeftCornerToImageSpace usage
[Refactoring] Add a missing 'f' to specify the float type
[Refactoring] Make cellTopLeftCornerToImageSpace more homogenous with worldPosToImageSpace
[Refactoring] Extract createmakrercoords method
[Refactoring] Use worldPosToImageSpace instead of cellTopLeftCornerToImageSpace
Remove cellTopLeftCornerToImageSpace as it is not used anymore
Remove getCellSize as it is not used anymore
[Refactoring] Extract new method createMarker
[Refactoring] Extract new method getMarkerCoordinates
[Refactoring] Extract new method getPosition
[Refactoring] Extract new method centerView
[Refactoring] Extract new method createDoorMarker
[Refactoring] Simplify for loop
[Refactoring] Make the test before the loop