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"use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.getTickValuesFixedDomain = exports.getTickValues = exports.getNiceTickValues = void 0;
var _decimal = _interopRequireDefault(require("decimal.js-light"));
var _utils = require("./util/utils");
var _arithmetic = _interopRequireDefault(require("./util/arithmetic"));
function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
function _toConsumableArray(arr) { return _arrayWithoutHoles(arr) || _iterableToArray(arr) || _unsupportedIterableToArray(arr) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _iterableToArray(iter) { if (typeof Symbol !== "undefined" && Symbol.iterator in Object(iter)) return Array.from(iter); }
function _arrayWithoutHoles(arr) { if (Array.isArray(arr)) return _arrayLikeToArray(arr); }
function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }
function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }
/**
* Calculate a interval of a minimum value and a maximum value
*
* @param {Number} min The minimum value
* @param {Number} max The maximum value
* @return {Array} An interval
*/
function getValidInterval(_ref) {
var _ref2 = _slicedToArray(_ref, 2),
min = _ref2[0],
max = _ref2[1];
var validMin = min,
validMax = max; // exchange
if (min > max) {
validMin = max;
validMax = min;
}
return [validMin, validMax];
}
/**
* Calculate the step which is easy to understand between ticks, like 10, 20, 25
*
* @param {Decimal} roughStep The rough step calculated by deviding the
* difference by the tickCount
* @param {Boolean} allowDecimals Allow the ticks to be decimals or not
* @param {Integer} correctionFactor A correction factor
* @return {Decimal} The step which is easy to understand between two ticks
*/
function getFormatStep(roughStep, allowDecimals, correctionFactor) {
if (roughStep.lte(0)) {
return new _decimal.default(0);
}
var digitCount = _arithmetic.default.getDigitCount(roughStep.toNumber()); // The ratio between the rough step and the smallest number which has a bigger
// order of magnitudes than the rough step
var digitCountValue = new _decimal.default(10).pow(digitCount);
var stepRatio = roughStep.div(digitCountValue); // When an integer and a float multiplied, the accuracy of result may be wrong
var stepRatioScale = digitCount !== 1 ? 0.05 : 0.1;
var amendStepRatio = new _decimal.default(Math.ceil(stepRatio.div(stepRatioScale).toNumber())).add(correctionFactor).mul(stepRatioScale);
var formatStep = amendStepRatio.mul(digitCountValue);
return allowDecimals ? formatStep : new _decimal.default(Math.ceil(formatStep));
}
/**
* calculate the ticks when the minimum value equals to the maximum value
*
* @param {Number} value The minimum valuue which is also the maximum value
* @param {Integer} tickCount The count of ticks
* @param {Boolean} allowDecimals Allow the ticks to be decimals or not
* @return {Array} ticks
*/
function getTickOfSingleValue(value, tickCount, allowDecimals) {
var step = 1; // calculate the middle value of ticks
var middle = new _decimal.default(value);
if (!middle.isint() && allowDecimals) {
var absVal = Math.abs(value);
if (absVal < 1) {
// The step should be a float number when the difference is smaller than 1
step = new _decimal.default(10).pow(_arithmetic.default.getDigitCount(value) - 1);
middle = new _decimal.default(Math.floor(middle.div(step).toNumber())).mul(step);
} else if (absVal > 1) {
// Return the maximum integer which is smaller than 'value' when 'value' is greater than 1
middle = new _decimal.default(Math.floor(value));
}
} else if (value === 0) {
middle = new _decimal.default(Math.floor((tickCount - 1) / 2));
} else if (!allowDecimals) {
middle = new _decimal.default(Math.floor(value));
}
var middleIndex = Math.floor((tickCount - 1) / 2);
var fn = (0, _utils.compose)((0, _utils.map)(function (n) {
return middle.add(new _decimal.default(n - middleIndex).mul(step)).toNumber();
}), _utils.range);
return fn(0, tickCount);
}
/**
* Calculate the step
*
* @param {Number} min The minimum value of an interval
* @param {Number} max The maximum value of an interval
* @param {Integer} tickCount The count of ticks
* @param {Boolean} allowDecimals Allow the ticks to be decimals or not
* @param {Number} correctionFactor A correction factor
* @return {Object} The step, minimum value of ticks, maximum value of ticks
*/
function calculateStep(min, max, tickCount, allowDecimals) {
var correctionFactor = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 0;
// dirty hack (for recharts' test)
if (!Number.isFinite((max - min) / (tickCount - 1))) {
return {
step: new _decimal.default(0),
tickMin: new _decimal.default(0),
tickMax: new _decimal.default(0)
};
} // The step which is easy to understand between two ticks
var step = getFormatStep(new _decimal.default(max).sub(min).div(tickCount - 1), allowDecimals, correctionFactor); // A medial value of ticks
var middle; // When 0 is inside the interval, 0 should be a tick
if (min <= 0 && max >= 0) {
middle = new _decimal.default(0);
} else {
// calculate the middle value
middle = new _decimal.default(min).add(max).div(2); // minus modulo value
middle = middle.sub(new _decimal.default(middle).mod(step));
}
var belowCount = Math.ceil(middle.sub(min).div(step).toNumber());
var upCount = Math.ceil(new _decimal.default(max).sub(middle).div(step).toNumber());
var scaleCount = belowCount + upCount + 1;
if (scaleCount > tickCount) {
// When more ticks need to cover the interval, step should be bigger.
return calculateStep(min, max, tickCount, allowDecimals, correctionFactor + 1);
}
if (scaleCount < tickCount) {
// When less ticks can cover the interval, we should add some additional ticks
upCount = max > 0 ? upCount + (tickCount - scaleCount) : upCount;
belowCount = max > 0 ? belowCount : belowCount + (tickCount - scaleCount);
}
return {
step: step,
tickMin: middle.sub(new _decimal.default(belowCount).mul(step)),
tickMax: middle.add(new _decimal.default(upCount).mul(step))
};
}
/**
* Calculate the ticks of an interval, the count of ticks will be guraranteed
*
* @param {Number} min, max min: The minimum value, max: The maximum value
* @param {Integer} tickCount The count of ticks
* @param {Boolean} allowDecimals Allow the ticks to be decimals or not
* @return {Array} ticks
*/
function getNiceTickValuesFn(_ref3) {
var _ref4 = _slicedToArray(_ref3, 2),
min = _ref4[0],
max = _ref4[1];
var tickCount = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 6;
var allowDecimals = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
// More than two ticks should be return
var count = Math.max(tickCount, 2);
var _getValidInterval = getValidInterval([min, max]),
_getValidInterval2 = _slicedToArray(_getValidInterval, 2),
cormin = _getValidInterval2[0],
cormax = _getValidInterval2[1];
if (cormin === -Infinity || cormax === Infinity) {
var _values = cormax === Infinity ? [cormin].concat(_toConsumableArray((0, _utils.range)(0, tickCount - 1).map(function () {
return Infinity;
}))) : [].concat(_toConsumableArray((0, _utils.range)(0, tickCount - 1).map(function () {
return -Infinity;
})), [cormax]);
return min > max ? (0, _utils.reverse)(_values) : _values;
}
if (cormin === cormax) {
return getTickOfSingleValue(cormin, tickCount, allowDecimals);
} // Get the step between two ticks
var _calculateStep = calculateStep(cormin, cormax, count, allowDecimals),
step = _calculateStep.step,
tickMin = _calculateStep.tickMin,
tickMax = _calculateStep.tickMax;
var values = _arithmetic.default.rangeStep(tickMin, tickMax.add(new _decimal.default(0.1).mul(step)), step);
return min > max ? (0, _utils.reverse)(values) : values;
}
/**
* Calculate the ticks of an interval, the count of ticks won't be guraranteed
*
* @param {Number} min, max min: The minimum value, max: The maximum value
* @param {Integer} tickCount The count of ticks
* @param {Boolean} allowDecimals Allow the ticks to be decimals or not
* @return {Array} ticks
*/
function getTickValuesFn(_ref5) {
var _ref6 = _slicedToArray(_ref5, 2),
min = _ref6[0],
max = _ref6[1];
var tickCount = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 6;
var allowDecimals = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
// More than two ticks should be return
var count = Math.max(tickCount, 2);
var _getValidInterval3 = getValidInterval([min, max]),
_getValidInterval4 = _slicedToArray(_getValidInterval3, 2),
cormin = _getValidInterval4[0],
cormax = _getValidInterval4[1];
if (cormin === -Infinity || cormax === Infinity) {
return [min, max];
}
if (cormin === cormax) {
return getTickOfSingleValue(cormin, tickCount, allowDecimals);
}
var step = getFormatStep(new _decimal.default(cormax).sub(cormin).div(count - 1), allowDecimals, 0);
var fn = (0, _utils.compose)((0, _utils.map)(function (n) {
return new _decimal.default(cormin).add(new _decimal.default(n).mul(step)).toNumber();
}), _utils.range);
var values = fn(0, count).filter(function (entry) {
return entry >= cormin && entry <= cormax;
});
return min > max ? (0, _utils.reverse)(values) : values;
}
/**
* Calculate the ticks of an interval, the count of ticks won't be guraranteed,
* but the domain will be guaranteed
*
* @param {Number} min, max min: The minimum value, max: The maximum value
* @param {Integer} tickCount The count of ticks
* @param {Boolean} allowDecimals Allow the ticks to be decimals or not
* @return {Array} ticks
*/
function getTickValuesFixedDomainFn(_ref7, tickCount) {
var _ref8 = _slicedToArray(_ref7, 2),
min = _ref8[0],
max = _ref8[1];
var allowDecimals = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : true;
// More than two ticks should be return
var _getValidInterval5 = getValidInterval([min, max]),
_getValidInterval6 = _slicedToArray(_getValidInterval5, 2),
cormin = _getValidInterval6[0],
cormax = _getValidInterval6[1];
if (cormin === -Infinity || cormax === Infinity) {
return [min, max];
}
if (cormin === cormax) {
return [cormin];
}
var count = Math.max(tickCount, 2);
var step = getFormatStep(new _decimal.default(cormax).sub(cormin).div(count - 1), allowDecimals, 0);
var values = [].concat(_toConsumableArray(_arithmetic.default.rangeStep(new _decimal.default(cormin), new _decimal.default(cormax).sub(new _decimal.default(0.99).mul(step)), step)), [cormax]);
return min > max ? (0, _utils.reverse)(values) : values;
}
var getNiceTickValues = (0, _utils.memoize)(getNiceTickValuesFn);
exports.getNiceTickValues = getNiceTickValues;
var getTickValues = (0, _utils.memoize)(getTickValuesFn);
exports.getTickValues = getTickValues;
var getTickValuesFixedDomain = (0, _utils.memoize)(getTickValuesFixedDomainFn);
exports.getTickValuesFixedDomain = getTickValuesFixedDomain;