correct calculation of min/max delta for moveable element
correct calculation of min/max delta for moveable element

fateevv/basisjs,tyanas/basisjs,basisjs/basisjs,istrel/basisjs,smelukov/basisjs,tyanas/basisjs,smelukov/basisjs,tyanas/basisjs,fateevv/basisjs,istrel/basisjs,istrel/basisjs,basisjs/basisjs,smelukov/basisjs,basisjs/basisjs,fateevv/basisjs