calculate slider increment from (max-min)/1000, resolves #351
calculate slider increment from (max-min)/1000, resolves #351

vizorvr/vizor-create,vizorvr/vizor-create,vizorvr/vizor,vizorvr/patches,vizorvr/patches,vizorvr/patches,vizorvr/patches,vizorvr/patches,vizorvr/vizor-create,vizorvr/vizor,vizorvr/vizor