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Rectangle grid can have unequal row lenghts

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Catalin Constantin Mititiuc 2025-06-16 22:41:31 -07:00
parent 8e19487954
commit 698aa19966
1 changed files with 32 additions and 7 deletions
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39
src/radial.js
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@ -61,14 +61,14 @@ function generateRadialCoords(l, { q, r, s }, radius) {
return list; return list;
} }
function generateRadialCoordsRect({ rows, columns, odd = false } = {}, { q = 0, r = 0, s = 0 } = {}) { function generateRadialCoordsRect({ rows, columns, odd = false, equal = true } = {}, { q = 0, r = 0, s = 0 } = {}) {
const list = new Set(); const list = new Set();
for (let col = 0; col < columns; col++) { for (let row = 0; row < rows; row++) {
for (let row = 0; row < rows; row++) { const alternating = row % 2;
const alternating = row % 2; const dr = row;
const dr = row;
for (let col = 0; col < columns; col++) {
let dq = -(alternating + row) / 2 + alternating - col; let dq = -(alternating + row) / 2 + alternating - col;
let ds = -(row + alternating) / 2 + col; let ds = -(row + alternating) / 2 + col;
@ -79,6 +79,20 @@ function generateRadialCoordsRect({ rows, columns, odd = false } = {}, { q = 0,
list.add(toKey(q + dq, r + dr, s + ds)); list.add(toKey(q + dq, r + dr, s + ds));
} }
if (!equal) {
if ((odd && !(row % 2)) || (!odd && row % 2)) {
let dq = -(alternating + row) / 2 + alternating - columns;
let ds = -(row + alternating) / 2 + columns;
if (odd) {
dq = dq - alternating;
ds = ds + alternating;
}
list.add(toKey(q + dq, r + dr, s + ds));
}
}
} }
return list; return list;
@ -123,12 +137,11 @@ function drawHexes(el, list) {
[use, qText, rText, sText].forEach(el => g.appendChild(el)); [use, qText, rText, sText].forEach(el => g.appendChild(el));
el.appendChild(g); el.appendChild(g);
// map.set(key, g);
}); });
} }
const grid = generateRadialCoordsRect({ rows: 10, columns: 14 }, { q: 9, r: -5, s: -4 }); const grid = generateRadialCoordsRect({ rows: 10, columns: 14 }, { q: 9, r: -5, s: -4 });
const building1 = generateRadialCoordsRect({ rows: 4, columns: 3 }, { q: 6, r: -3, s: -3 }); const building1 = generateRadialCoordsRect({ rows: 5, columns: 3, equal: false }, { q: 7, r: -4, s: -3 });
const building2 = generateRadialCoordsRect({ rows: 4, columns: 3, odd: true }, { q: 0, r: -4, s: 4 }); const building2 = generateRadialCoordsRect({ rows: 4, columns: 3, odd: true }, { q: 0, r: -4, s: 4 });
const building3 = generateRadialCoords(new Map(), { q: -1, r: 2, s: -1 }, 1); const building3 = generateRadialCoords(new Map(), { q: -1, r: 2, s: -1 }, 1);
@ -137,3 +150,15 @@ building2.forEach(coords => grid.delete(coords));
building3.forEach(coords => grid.delete(coords)); building3.forEach(coords => grid.delete(coords));
drawHexes(svg, grid); drawHexes(svg, grid);
// const rectEven = generateRadialCoordsRect({ rows: 2, columns: 2 }, { q: 9, r: -5, s: -4 });
// const rectOdd = generateRadialCoordsRect({ rows: 2, columns: 2, odd: true }, { q: 8, r: -2, s: -6 });
// const rectEvenUnevenCols = generateRadialCoordsRect({ rows: 2, columns: 1, equal: false}, { q: 6, r: 1, s: -7 });
// const rectOddUnevenCols = generateRadialCoordsRect({ rows: 2, columns: 1, odd: true, equal: false}, { q: 5, r: 4, s: -9 });
// drawHexes(svg, rectEven);
// drawHexes(svg, rectOdd);
// drawHexes(svg, rectEvenUnevenCols);
// drawHexes(svg, rectOddUnevenCols);
// drawHexes(svg, generateRadialCoordsRect({ rows: 7, columns: 6, odd: true, equal: false }, { q: 5, r: -5, s: 0 }));