@rickosborne/hexgrid
Version:
Rick Osborne's collection of hexagonal grid-related code.
52 lines (51 loc) • 1.57 kB
JavaScript
var __defProp = Object.defineProperty;
var __name = (target, value) => __defProp(target, "name", { value, configurable: true });
import { EVEN_Q, EVEN_R, ODD_Q, ODD_R } from "./hex-system.mjs";
const SIMPLE_AXIAL_KEY = Object.freeze({
[EVEN_Q]: "q",
[EVEN_R]: "r",
[ODD_Q]: "q",
[ODD_R]: "r"
});
const COMPLEX_AXIAL_KEY = Object.freeze({
[EVEN_Q]: "r",
[EVEN_R]: "q",
[ODD_Q]: "r",
[ODD_R]: "q"
});
const offsetFromQRS = /* @__PURE__ */ __name((system, point) => {
const simpleAxialKey = SIMPLE_AXIAL_KEY[system];
const simpleIn = point[simpleAxialKey];
const complexAxialKey = COMPLEX_AXIAL_KEY[system];
const complexIn = point[complexAxialKey];
let bit = simpleIn & 1;
if (system === ODD_R || system === ODD_Q) {
bit = -bit;
}
const complexOut = complexIn + (simpleIn + bit) / 2;
let col;
let row;
if (system === ODD_R || system === EVEN_R) {
col = complexOut;
row = simpleIn;
} else {
col = simpleIn;
row = complexOut;
}
return {
col,
row,
system
};
}, "offsetFromQRS");
const oddRFromQRS = /* @__PURE__ */ __name((point) => offsetFromQRS(ODD_R, point), "oddRFromQRS");
const oddQFromQRS = /* @__PURE__ */ __name((point) => offsetFromQRS(ODD_Q, point), "oddQFromQRS");
const evenRFromQRS = /* @__PURE__ */ __name((point) => offsetFromQRS(EVEN_R, point), "evenRFromQRS");
const evenQFromQRS = /* @__PURE__ */ __name((point) => offsetFromQRS(EVEN_Q, point), "evenQFromQRS");
export {
evenQFromQRS,
evenRFromQRS,
oddQFromQRS,
oddRFromQRS
};
//# sourceMappingURL=offset-from-qrs.mjs.map