// Foundation for Sites by ZURB // foundation.zurb.com // Licensed under MIT Open Source

//// /// @group functions ////

/// Returns the opposite direction of $dir /// /// @param {Keyword} $dir - Used direction between “top”, “right”, “bottom” and “left”. /// @return {Keyword} Opposite direction of $dir @function direction-opposite(

$dir

) {

$dirs: (top, right, bottom, left);
$place: index($dirs, $dir);

@if $place == null {
  @error 'direction-opposite: Invalid $dir parameter, expected a value from "#{$dirs}", found "#{$dir}".';
  @return null;
}

// Calcul the opposite place in a circle, with a starting index of 1
$length: length($dirs);
$demi: $length / 2;
$opposite-place: (($place + $demi - 1) % $length) + 1;

@return nth($dirs, $opposite-place);

}