1 | "use strict";
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.default = nogamma;
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7 | exports.gamma = gamma;
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8 | exports.hue = hue;
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9 |
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10 | var _constant = _interopRequireDefault(require("./constant.js"));
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11 |
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12 | function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
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13 |
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14 | function linear(a, d) {
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15 | return function (t) {
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16 | return a + t * d;
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17 | };
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18 | }
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19 |
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20 | function exponential(a, b, y) {
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21 | return a = Math.pow(a, y), b = Math.pow(b, y) - a, y = 1 / y, function (t) {
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22 | return Math.pow(a + t * b, y);
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23 | };
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24 | }
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25 |
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26 | function hue(a, b) {
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27 | var d = b - a;
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28 | return d ? linear(a, d > 180 || d < -180 ? d - 360 * Math.round(d / 360) : d) : (0, _constant.default)(isNaN(a) ? b : a);
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29 | }
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30 |
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31 | function gamma(y) {
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32 | return (y = +y) === 1 ? nogamma : function (a, b) {
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33 | return b - a ? exponential(a, b, y) : (0, _constant.default)(isNaN(a) ? b : a);
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34 | };
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35 | }
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36 |
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37 | function nogamma(a, b) {
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38 | var d = b - a;
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39 | return d ? linear(a, d) : (0, _constant.default)(isNaN(a) ? b : a);
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40 | } |
\ | No newline at end of file |