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65 lines
1.9 KiB
65 lines
1.9 KiB
4 months ago
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.numberInterpolate = void 0;
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exports.arrayInterpolate = arrayInterpolate;
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exports.objectInterpolate = objectInterpolate;
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exports.interpolate = interpolate;
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var tslib_1 = require("tslib");
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var numberInterpolate = function (from, to) {
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return function (t) {
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return from * (1 - t) + to * t;
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};
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};
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exports.numberInterpolate = numberInterpolate;
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function arrayInterpolate(from, to) {
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var nb = to ? to.length : 0;
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var na = from ? Math.min(nb, from.length) : 0;
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return function (t) {
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var x = new Array(na);
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var c = new Array(nb);
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var i = 0;
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for (i = 0; i < na; ++i)
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x[i] = interpolate(from[i], to[i]);
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for (; i < nb; ++i)
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c[i] = to[i];
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for (i = 0; i < na; ++i)
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c[i] = x[i](t);
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return c;
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};
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}
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function objectInterpolate(from, to) {
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if (from === void 0) { from = {}; }
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if (to === void 0) { to = {}; }
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var i = {};
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var c = {};
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Object.entries(to).forEach(function (_a) {
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var _b = tslib_1.__read(_a, 2), k = _b[0], v = _b[1];
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if (k in from)
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i[k] = interpolate(from[k], v);
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else
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c[k] = v;
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});
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return function (t) {
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Object.entries(i).forEach(function (_a) {
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var _b = tslib_1.__read(_a, 2), k = _b[0], v = _b[1];
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return (c[k] = v(t));
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});
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return c;
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};
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}
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function interpolate(from, to) {
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if (typeof from === 'number' && typeof to === 'number') {
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// @ts-ignore
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return (0, exports.numberInterpolate)(from, to);
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}
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if (Array.isArray(from) && Array.isArray(to)) {
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// @ts-ignore
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return arrayInterpolate(from, to);
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}
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if (typeof from === 'object' && typeof to === 'object') {
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// @ts-ignore
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return objectInterpolate(from, to);
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}
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return (function (t) { return from; });
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}
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//# sourceMappingURL=interpolate.js.map
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