molstar
Version:
A comprehensive macromolecular library.
27 lines (26 loc) • 787 B
JavaScript
;
/**
* Copyright (c) 2019 mol* contributors, licensed under MIT, See LICENSE file for more info.
*
* @author Alexander Rose <alexander.rose@weirdbyte.de>
*/
Object.defineProperty(exports, "__esModule", { value: true });
exports.getChainId = void 0;
const memoize_1 = require("../../../mol-util/memoize");
const ChainIdAlphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
function _getChainId(index) {
const n = ChainIdAlphabet.length;
let j = index;
let k = 0;
let chainId = ChainIdAlphabet[j % n];
while (j >= n) {
j = Math.floor(j / n);
chainId += ChainIdAlphabet[j % n];
k += 1;
}
if (k >= 5) {
console.warn('getChainId overflow');
}
return chainId;
}
exports.getChainId = (0, memoize_1.memoize1)(_getChainId);