"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.pad2 = exports.convertToPercentage = exports.boundAlpha = exports.isPercentage = exports.isOnePointZero = exports.clamp01 = exports.bound01 = void 0;
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/**
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* Take input from [0, n] and return it as [0, 1]
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* @hidden
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*/
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function bound01(n, max) {
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if (isOnePointZero(n)) {
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n = '100%';
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}
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var isPercent = isPercentage(n);
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n = max === 360 ? n : Math.min(max, Math.max(0, parseFloat(n)));
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// Automatically convert percentage into number
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if (isPercent) {
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n = parseInt(String(n * max), 10) / 100;
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}
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// Handle floating point rounding errors
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if (Math.abs(n - max) < 0.000001) {
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return 1;
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}
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// Convert into [0, 1] range if it isn't already
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if (max === 360) {
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// If n is a hue given in degrees,
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// wrap around out-of-range values into [0, 360] range
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// then convert into [0, 1].
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n = (n < 0 ? (n % max) + max : n % max) / parseFloat(String(max));
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}
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else {
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// If n not a hue given in degrees
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// Convert into [0, 1] range if it isn't already.
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n = (n % max) / parseFloat(String(max));
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}
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return n;
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}
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exports.bound01 = bound01;
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/**
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* Force a number between 0 and 1
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* @hidden
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*/
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function clamp01(val) {
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return Math.min(1, Math.max(0, val));
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}
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exports.clamp01 = clamp01;
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/**
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* Need to handle 1.0 as 100%, since once it is a number, there is no difference between it and 1
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* <http://stackoverflow.com/questions/7422072/javascript-how-to-detect-number-as-a-decimal-including-1-0>
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* @hidden
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*/
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function isOnePointZero(n) {
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return typeof n === 'string' && n.indexOf('.') !== -1 && parseFloat(n) === 1;
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}
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exports.isOnePointZero = isOnePointZero;
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/**
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* Check to see if string passed in is a percentage
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* @hidden
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*/
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function isPercentage(n) {
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return typeof n === 'string' && n.indexOf('%') !== -1;
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}
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exports.isPercentage = isPercentage;
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/**
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* Return a valid alpha value [0,1] with all invalid values being set to 1
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* @hidden
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*/
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function boundAlpha(a) {
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a = parseFloat(a);
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if (isNaN(a) || a < 0 || a > 1) {
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a = 1;
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}
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return a;
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}
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exports.boundAlpha = boundAlpha;
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/**
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* Replace a decimal with it's percentage value
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* @hidden
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*/
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function convertToPercentage(n) {
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if (n <= 1) {
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return "".concat(Number(n) * 100, "%");
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}
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return n;
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}
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exports.convertToPercentage = convertToPercentage;
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/**
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* Force a hex value to have 2 characters
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* @hidden
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*/
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function pad2(c) {
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return c.length === 1 ? '0' + c : String(c);
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}
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exports.pad2 = pad2;
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