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Catalin Mititiuc

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authorCatalin Mititiuc <webdevcat@proton.me>2024-06-17 12:38:18 -0700
committerCatalin Mititiuc <webdevcat@proton.me>2024-06-17 12:38:18 -0700
commitdaf0628bd19f0fadc68b1eeb4067f1b034afaeb9 (patch)
tree80b8a8149e20c047e55b5847e0289c3307aed039 /src
parent6b6dbba9f1c4410c423b12d0827a4f3c74e49b45 (diff)
Odd or even hex grid
Diffstat (limited to 'src')
-rw-r--r--src/radial.js124
1 files changed, 69 insertions, 55 deletions
diff --git a/src/radial.js b/src/radial.js
index 6cf9058..dd368f7 100644
--- a/src/radial.js
+++ b/src/radial.js
@@ -3,10 +3,26 @@ if (window.IS_DEV) {
source.addEventListener('change', () => location.reload());
}
+const xmlns = 'http://www.w3.org/2000/svg';
+const svg = document.querySelector('svg');
+
+const hex = {
+ inradius: 8.66,
+ circumradius: 10,
+}
+
+const horzSpacing = hex.inradius;
+const vertSpacing = hex.circumradius * 3 / 2;
+
+
function toKey(q, r, s) {
return `${[q, r, s]}`;
}
+function sameSigns(a, b) {
+ return a > -1 && b > -1 || a < 0 && b < 0;
+}
+
function getNeighbors(coords) {
const [q, r, s] = coords.split(',').map(n => +n);
@@ -45,19 +61,21 @@ function generateRadialCoords(l, { q, r, s }, radius) {
return list;
}
-function sameSigns(a, b) {
- return a > -1 && b > -1 || a < 0 && b < 0;
-}
-
-function generateRadialCoordsRect({ rows, columns }, { q = 0, r = 0, s = 0 } = {}) {
+function generateRadialCoordsRect({ rows, columns, odd = false } = {}, { q = 0, r = 0, s = 0 } = {}) {
const list = new Set();
for (let col = 0; col < columns; col++) {
- for (let rw = 0; rw < rows; rw++) {
- const alternate = rw % 2;
- const dq = -(alternate + rw) / 2 + alternate - col;
- const dr = rw;
- const ds = -(rw + alternate) / 2 + col;
+ for (let row = 0; row < rows; row++) {
+ const alternating = row % 2;
+ const dr = row;
+
+ let dq = -(alternating + row) / 2 + alternating - col;
+ let ds = -(row + alternating) / 2 + col;
+
+ if (odd) {
+ dq = dq - alternating;
+ ds = ds + alternating;
+ }
list.add(toKey(q + dq, r + dr, s + ds));
}
@@ -66,60 +84,56 @@ function generateRadialCoordsRect({ rows, columns }, { q = 0, r = 0, s = 0 } = {
return list;
}
-const hex = {
- inradius: 8.66,
- circumradius: 10,
-}
-
-const horzSpacing = hex.inradius;
-const vertSpacing = hex.circumradius * 3 / 2;
+function drawHexes(el, list) {
+ list.forEach(key => {
+ const [q, r, s] = key.split(',').map(n => +n);
-// let list = generateRadialCoords(new Map(), { q: 2, r: 0, s: -2 }, 1);
-// list = generateRadialCoords(list, { q: -2, r: 0, s: 2 }, 1);
-// list = generateRadialCoords(list, { q: 0, r: 0, s: 0 }, 0);
-const list = generateRadialCoordsRect({ rows: 4, columns: 5 }, { q: 7, r: -4, s: -3 });
-const svg = document.querySelector('svg');
-const xmlns = 'http://www.w3.org/2000/svg';
+ let x;
-// const map = new Map();
+ if (q === s)
+ x = 0;
+ else if (sameSigns(q, s))
+ x = Math.abs(q - s);
+ else
+ x = Math.abs(q) + Math.abs(s);
-list.forEach(key => {
- const [q, r, s] = key.split(',').map(n => +n);
+ x = (q > s ? -1 : 1) * x * horzSpacing;
+ y = r * vertSpacing;
- let x;
+ const g = document.createElementNS(xmlns, 'g');
+ g.setAttributeNS(null, 'transform', `translate(${x}, ${y})`);
- if (q === s)
- x = 0;
- else if (sameSigns(q, s))
- x = Math.abs(q - s);
- else
- x = Math.abs(q) + Math.abs(s);
+ const use = document.createElementNS(xmlns, 'use');
+ use.setAttributeNS(null, 'href', '#hex');
- x = (q > s ? -1 : 1) * x * horzSpacing;
- y = r * vertSpacing;
+ const qText = document.createElementNS(xmlns, 'text');
+ qText.textContent = q;
+ qText.setAttributeNS(null, 'x', -3);
+ qText.setAttributeNS(null, 'y', -3);
- const g = document.createElementNS(xmlns, 'g');
- g.setAttributeNS(null, 'transform', `translate(${x}, ${y})`);
+ const rText = document.createElementNS(xmlns, 'text');
+ rText.textContent = r;
+ rText.setAttributeNS(null, 'x', 5);
+ rText.setAttributeNS(null, 'y', 1.5);
- const use = document.createElementNS(xmlns, 'use');
- use.setAttributeNS(null, 'href', '#hex');
+ const sText = document.createElementNS(xmlns, 'text');
+ sText.textContent = s;
+ sText.setAttributeNS(null, 'x', -3);
+ sText.setAttributeNS(null, 'y', + 5);
- const qText = document.createElementNS(xmlns, 'text');
- qText.textContent = q;
- qText.setAttributeNS(null, 'x', -3);
- qText.setAttributeNS(null, 'y', -3);
+ [use, qText, rText, sText].forEach(el => g.appendChild(el));
+ el.appendChild(g);
+ // map.set(key, g);
+ });
+}
- const rText = document.createElementNS(xmlns, 'text');
- rText.textContent = r;
- rText.setAttributeNS(null, 'x', 5);
- rText.setAttributeNS(null, 'y', 1.5);
+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 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 sText = document.createElementNS(xmlns, 'text');
- sText.textContent = s;
- sText.setAttributeNS(null, 'x', -3);
- sText.setAttributeNS(null, 'y', + 5);
+building1.forEach(coords => grid.delete(coords));
+building2.forEach(coords => grid.delete(coords));
+building3.forEach(coords => grid.delete(coords));
- [use, qText, rText, sText].forEach(el => g.appendChild(el));
- svg.appendChild(g);
- // map.set(key, g);
-});
+drawHexes(svg, grid);