| 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 = void 0;
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| 7 | var _cardinalOpen = require("./cardinalOpen.js");
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| 8 | var _catmullRom = require("./catmullRom.js");
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| 9 | function CatmullRomOpen(context, alpha) {
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| 10 | this._context = context;
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| 11 | this._alpha = alpha;
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| 12 | }
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| 13 | CatmullRomOpen.prototype = {
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| 14 | areaStart: function () {
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| 15 | this._line = 0;
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| 16 | },
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| 17 | areaEnd: function () {
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| 18 | this._line = NaN;
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| 19 | },
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| 20 | lineStart: function () {
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| 21 | this._x0 = this._x1 = this._x2 = this._y0 = this._y1 = this._y2 = NaN;
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| 22 | this._l01_a = this._l12_a = this._l23_a = this._l01_2a = this._l12_2a = this._l23_2a = this._point = 0;
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| 23 | },
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| 24 | lineEnd: function () {
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| 25 | if (this._line || this._line !== 0 && this._point === 3) this._context.closePath();
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| 26 | this._line = 1 - this._line;
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| 27 | },
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| 28 | point: function (x, y) {
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| 29 | x = +x, y = +y;
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| 30 | if (this._point) {
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| 31 | var x23 = this._x2 - x,
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| 32 | y23 = this._y2 - y;
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| 33 | this._l23_a = Math.sqrt(this._l23_2a = Math.pow(x23 * x23 + y23 * y23, this._alpha));
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| 34 | }
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| 35 | switch (this._point) {
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| 36 | case 0:
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| 37 | this._point = 1;
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| 38 | break;
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| 39 | case 1:
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| 40 | this._point = 2;
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| 41 | break;
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| 42 | case 2:
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| 43 | this._point = 3;
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| 44 | this._line ? this._context.lineTo(this._x2, this._y2) : this._context.moveTo(this._x2, this._y2);
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| 45 | break;
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| 46 | case 3:
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| 47 | this._point = 4;
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| 48 | // falls through
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| 49 | default:
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| 50 | (0, _catmullRom.point)(this, x, y);
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| 51 | break;
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| 52 | }
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| 53 | this._l01_a = this._l12_a, this._l12_a = this._l23_a;
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| 54 | this._l01_2a = this._l12_2a, this._l12_2a = this._l23_2a;
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| 55 | this._x0 = this._x1, this._x1 = this._x2, this._x2 = x;
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| 56 | this._y0 = this._y1, this._y1 = this._y2, this._y2 = y;
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| 57 | }
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| 58 | };
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| 59 | var _default = exports.default = function custom(alpha) {
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| 60 | function catmullRom(context) {
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| 61 | return alpha ? new CatmullRomOpen(context, alpha) : new _cardinalOpen.CardinalOpen(context, 0);
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| 62 | }
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| 63 | catmullRom.alpha = function (alpha) {
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| 64 | return custom(+alpha);
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| 65 | };
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| 66 | return catmullRom;
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| 67 | }(0.5); |
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