TrainSignManage/WebFrame/bower_components/jvectormap/src/numeric-scale.js

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jvm.NumericScale = function(scale, normalizeFunction, minValue, maxValue) {
  this.scale = [];

  normalizeFunction = normalizeFunction || 'linear';

  if (scale) this.setScale(scale);
  if (normalizeFunction) this.setNormalizeFunction(normalizeFunction);
  if (typeof minValue !== 'undefined' ) this.setMin(minValue);
  if (typeof maxValue !== 'undefined' ) this.setMax(maxValue);
};

jvm.NumericScale.prototype = {
  setMin: function(min) {
    this.clearMinValue = min;
    if (typeof this.normalize === 'function') {
      this.minValue = this.normalize(min);
    } else {
      this.minValue = min;
    }
  },

  setMax: function(max) {
    this.clearMaxValue = max;
    if (typeof this.normalize === 'function') {
      this.maxValue = this.normalize(max);
    } else {
      this.maxValue = max;
    }
  },

  setScale: function(scale) {
    var i;

    this.scale = [];
    for (i = 0; i < scale.length; i++) {
      this.scale[i] = [scale[i]];
    }
  },

  setNormalizeFunction: function(f) {
    if (f === 'polynomial') {
      this.normalize = function(value) {
        return Math.pow(value, 0.2);
      }
    } else if (f === 'linear') {
      delete this.normalize;
    } else {
      this.normalize = f;
    }
    this.setMin(this.clearMinValue);
    this.setMax(this.clearMaxValue);
  },

  getValue: function(value) {
    var lengthes = [],
        fullLength = 0,
        l,
        i = 0,
        c;