spritesheet-creator/dist/sorter.js

Spritesheet Creator

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = sort;
// based on: http://codeincomplete.com/posts/2011/5/7/bin_packing/example/
var Sorters = {
  width: function width(a, b) {
    return b.width - a.width;
  },
  height: function height(a, b) {
    return b.height - a.height;
  },
  area: function area(a, b) {
    return b.area - a.area;
  },
  max: function max(a, b) {
    return Math.max(b.width, b.height) - Math.max(a.width, a.height);
  },
  min: function min(a, b) {
    return Math.min(b.width, b.height) - Math.min(a.width, a.height);
  }
};
var MultiSorters = {
  height: function height(a, b) {
    return msort(a, b, ['height', 'width']);
  },
  width: function width(a, b) {
    return msort(a, b, ['width', 'height']);
  },
  area: function area(a, b) {
    return msort(a, b, ['area', 'height', 'width']);
  },
  maxside: function maxside(a, b) {
    return msort(a, b, ['max', 'min', 'height', 'width']);
  }
};

function sort(method, files) {
  var sorter = MultiSorters[method];

  if (!sorter) {
    throw new Error("unsupported sort method ".concat(method, ", supported methods: ").concat(Object.keys(MultiSorters).join(',')));
  }

  files.sort(function (file_a, file_b) {
    return sorter(file_a.padded, file_b.padded);
  });
}
/* sort by multiple criteria */


function msort(a, b, criteria) {
  var _iteratorNormalCompletion = true;
  var _didIteratorError = false;
  var _iteratorError = undefined;

  try {
    for (var _iterator = criteria[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
      var c = _step.value;
      var diff = Sorters[c](a, b);

      if (diff !== 0) {
        return diff;
      }
    }
  } catch (err) {
    _didIteratorError = true;
    _iteratorError = err;
  } finally {
    try {
      if (!_iteratorNormalCompletion && _iterator["return"] != null) {
        _iterator["return"]();
      }
    } finally {
      if (_didIteratorError) {
        throw _iteratorError;
      }
    }
  }

  return 0;
}