components/Slider/Rail.js
function getDirectionPositionForRange (value, min, max, orientation) {
  return isVertical(orientation) ? (
    // as upper value is used to calculate `top`;
    Math.round(((max - value[1]) / max - min) * 100)
  ) : (
    Math.round((value[0] / max - min) * 100)
  );
}
function getDirectionPositionForRange (value, min, max, orientation) {
  return isVertical(orientation) ? (
    // as upper value is used to calculate `top`;
    Math.round(((max - value[1]) / max - min) * 100)
  ) : (
    Math.round((value[0] / max - min) * 100)
  );
}
function getDirectionPositionForRange ( value , min , max , orientation ) { return isVertical ( orientation ) ? ( // as upper value is used to calculate `top`; Math . round ( ( ( max - value [ 1 ] ) / max - min ) * 100 ) ) : ( Math . round ( ( value [ 0 ] / max - min ) * 100 ) ) ; }
Returns rail's position value of `left` for horizontal slider and `top`
for vertical slider
@param value
@param min
@param max
@param orientation
@returns {number} Value in Percentage
Returns rail s position value of left for horizontal slider and top for vertical slider