/*################################*\
    xmeter  |  __tool.sprite.less
\*################################*/


// Sets the background position of an Object’s background sprite image.
//
// @{[horizontal|vertcial]} - whether the sprite’s images are linearly horizontally or vertically ordered.
// @position                - the position of the sprite’s image to be used, starting at 1. must be a positive integer.
// @iconsize                - the horizontal (x) size of the sprite’s image. in pixels.
// @iconpadd                - the padding between images in the sprite’s image. in pixels.
// ^author
// : Chris Harvey
// ^updated
// : 2016-01-19
.sprite(horizontal; @position; @iconsize; @iconpadd) when (@position > 1) {
  background-position: ((@position - 1) * -(@iconsize + @iconpadd)) 0;
}
.sprite(horizontal; @position; @iconsize; @iconpadd) when (@position = 1) {
  background-position: 0 0;
}
.sprite(vertical; @position; @iconsize; @iconpadd) when (@position > 1) {
  background-position: 0 ((@position - 1) * -(@iconsize + @iconpadd));
}
.sprite(vertical; @position; @iconsize; @iconpadd) when (@position = 1) {
  background-position: 0 0;
}