diff --git a/src/app.js b/src/app.js
index 22a3e7d..ed81050 100644
--- a/src/app.js
+++ b/src/app.js
@@ -2499,6 +2499,27 @@
pedFoldAll.textContent = collapsed ? "Expand all" : "Collapse all";
}
pedFoldAll.addEventListener("click", () => pedSetAll(pedFoldAll.textContent[0] === "C"));
+
+ // ---- view toggle: top-down tree vs radial fan ----
+ const pedViewBtn = document.getElementById("ped-view");
+ const pedCaption = document.getElementById("pedigree-caption");
+ const pedViewKey = () => `puppy-tracker:${currentUser.id}:pedigree-view:v1`;
+ let pedView = "tree";
+ try { const v = localStorage.getItem(pedViewKey()); if (v === "fan" || v === "tree") pedView = v; } catch { /* ignore */ }
+
+ // The fan has no per-branch folding, so hide that control in fan mode; the
+ // toggle always offers the *other* view.
+ function updatePedViewControls() {
+ pedViewBtn.textContent = pedView === "fan" ? "Tree view" : "Fan view";
+ pedFoldAll.hidden = pedView === "fan";
+ if (pedView !== "fan" && pedCaption) { pedCaption.hidden = true; }
+ }
+ pedViewBtn.addEventListener("click", () => {
+ pedView = pedView === "fan" ? "tree" : "fan";
+ try { localStorage.setItem(pedViewKey(), pedView); } catch { /* ignore */ }
+ renderPedigree(pedNodes);
+ });
+
// Trackpad/desktop: ctrl or ⌘ + wheel zooms instead of scrolling the page.
pedTree.addEventListener("wheel", (e) => {
if (!e.ctrlKey && !e.metaKey) return;
@@ -2573,7 +2594,7 @@
const cached = loadPedCache(q);
if (cached && cached.nodes) {
renderSubject(cached.subject);
- renderTree(cached.nodes);
+ renderPedigree(cached.nodes);
}
if (!navigator.onLine) {
setPedStatus(cached ? "Offline — showing the last saved pedigree." : "Pedigree needs an internet connection.",
@@ -2606,7 +2627,7 @@
const data = await res.json();
if (data.status === "choose") { renderChoose(data.matches || []); return; }
renderSubject(data.subject);
- renderTree(data.nodes || {});
+ renderPedigree(data.nodes || {});
if (data.status === "done") {
savePedCache(q, data.subject, data.nodes || {});
setPedDone();
@@ -2625,7 +2646,7 @@
if (res.status === 401) { handleLoggedOut(); return; }
if (!res.ok) { setPedStatus("Lost track of the pedigree crawl.", "error"); return; }
const data = await res.json();
- renderTree(data.nodes || {});
+ renderPedigree(data.nodes || {});
if (data.status === "done") { savePedCache(q, subject, data.nodes || {}); setPedDone(); return; }
if (data.status === "error") { setPedStatus(data.error || "Pedigree crawl failed.", "error"); return; }
setPedStatus(`Tracing ancestry… ${pedCountText()}`, "busy");
@@ -2725,17 +2746,22 @@
}
let pedRepeat = {}; // dogKey -> occurrence count, for the current tree
- function renderTree(nodes) {
+ // Render the ancestry in whichever view is active (top-down tree or radial
+ // fan). Shared prep — cache the nodes and count pedigree collapse — lives here.
+ function renderPedigree(nodes) {
pedNodes = nodes;
- pedTree.textContent = "";
- // Count how many positions each dog fills, to flag pedigree collapse.
pedRepeat = {};
for (const k in nodes) {
const id = dogKey(nodes[k]);
if (id) pedRepeat[id] = (pedRepeat[id] || 0) + 1;
}
- const anyRepeat = Object.values(pedRepeat).some((c) => c > 1);
- if (pedRepeatNote) pedRepeatNote.hidden = !anyRepeat;
+ if (pedRepeatNote) pedRepeatNote.hidden = !Object.values(pedRepeat).some((c) => c > 1);
+ pedTree.textContent = "";
+ if (pedView === "fan") renderFan(nodes); else renderTree(nodes);
+ updatePedViewControls();
+ }
+
+ function renderTree(nodes) {
const root = buildPedNode(nodes, 1, 0);
if (!root) return;
const ul = document.createElement("ul");
@@ -2745,15 +2771,152 @@
if (pedFoldAll) pedFoldAll.textContent = "Collapse all"; // fresh tree starts partly open
}
- // Highlight (or unhighlight) every card that is the same dog as `key`.
+ // ---- radial fan chart ----
+ // The dog sits in a centre disc; each generation is a ring fanning outward.
+ // A position p is at generation g = floor(log2 p); within that ring it takes
+ // the wedge (idx=p-2^g) of 2^g equal slices, which nests each dog's parents
+ // directly outside it. Labels only fit on the inner rings; deeper wedges are
+ // colour only, with details on tap. Repeated dogs (pedigree collapse) carry
+ // their stable hue so tapping one lights up every wedge of that dog.
+ const FAN_MAX_GEN = 9;
+ const SVGNS = "http://www.w3.org/2000/svg";
+ const fanPolar = (r, deg) => {
+ const a = (deg - 90) * Math.PI / 180;
+ return [r * Math.cos(a), r * Math.sin(a)];
+ };
+ const fanNum = (n) => Math.round(n * 100) / 100;
+
+ function renderFan(nodes) {
+ let maxGen = 0;
+ for (const k in nodes) { const g = Math.floor(Math.log2(Number(k))); if (g > maxGen) maxGen = g; }
+ maxGen = Math.min(maxGen, FAN_MAX_GEN);
+
+ const r0 = 46;
+ const radii = [r0];
+ for (let g = 1; g <= maxGen; g++) radii[g] = radii[g - 1] + Math.max(24, 50 - g * 3);
+ const R = radii[maxGen] || r0;
+ const pad = 4;
+ const box = (R + pad) * 2;
+
+ const svg = document.createElementNS(SVGNS, "svg");
+ svg.setAttribute("class", "ped-fan");
+ svg.setAttribute("viewBox", `${-R - pad} ${-R - pad} ${box} ${box}`);
+ svg.setAttribute("width", box);
+ svg.setAttribute("height", box);
+
+ for (let g = 1; g <= maxGen; g++) {
+ const count = 2 ** g, degPer = 360 / count, ri = radii[g - 1], ro = radii[g];
+ for (let idx = 0; idx < count; idx++) {
+ const n = nodes[String(count + idx)];
+ if (!n) continue;
+ const a0 = idx * degPer, a1 = a0 + degPer, large = (a1 - a0) > 180 ? 1 : 0;
+ const [x1, y1] = fanPolar(ri, a0), [x2, y2] = fanPolar(ro, a0);
+ const [x3, y3] = fanPolar(ro, a1), [x4, y4] = fanPolar(ri, a1);
+ const path = document.createElementNS(SVGNS, "path");
+ path.setAttribute("d",
+ `M${fanNum(x2)} ${fanNum(y2)}A${fanNum(ro)} ${fanNum(ro)} 0 ${large} 1 ${fanNum(x3)} ${fanNum(y3)}` +
+ `L${fanNum(x4)} ${fanNum(y4)}A${fanNum(ri)} ${fanNum(ri)} 0 ${large} 0 ${fanNum(x1)} ${fanNum(y1)}Z`);
+ path.setAttribute("class", "ped-wedge");
+ path.style.setProperty("--gen", g);
+ const key = dogKey(n);
+ if (key && pedRepeat[key] > 1) {
+ path.dataset.dogkey = key;
+ path.style.setProperty("--repeat-hue", hueFor(key));
+ path.classList.add("ped-wedge-repeat");
+ }
+ const title = document.createElementNS(SVGNS, "title");
+ title.textContent = fanTitle(n, key);
+ path.append(title);
+ path.addEventListener("click", () => selectFan(count + idx));
+ svg.append(path);
+ if (degPer >= 20) fanLabel(svg, n, (a0 + a1) / 2, ri, ro, degPer);
+ }
+ }
+
+ // centre disc = the dog
+ const c = document.createElementNS(SVGNS, "circle");
+ c.setAttribute("r", r0);
+ c.setAttribute("class", "ped-fan-center");
+ c.addEventListener("click", () => selectFan(1));
+ svg.append(c);
+ fanCenterLabel(svg, nodes["1"], r0);
+
+ pedTree.append(svg);
+ if (pedCaption) {
+ pedCaption.hidden = false;
+ pedCaption.textContent = "Tap a wedge for its dog. Zoom to read the outer rings.";
+ }
+ }
+
+ function fanTitle(n, key) {
+ let t = n.name || "(unnamed)";
+ if (n.reg) t += " — " + n.reg;
+ if (key && pedRepeat[key] > 1) t += " (×" + pedRepeat[key] + ")";
+ return t;
+ }
+
+ function fanLabel(svg, n, midA, ri, ro, degPer) {
+ let rot = midA - 90;
+ if (rot > 90 && rot < 270) rot -= 180; // keep upright
+ const [px, py] = fanPolar((ri + ro) / 2, midA);
+ const t = document.createElementNS(SVGNS, "text");
+ t.setAttribute("class", "ped-wedge-label");
+ t.setAttribute("transform", `translate(${fanNum(px)} ${fanNum(py)}) rotate(${fanNum(rot)})`);
+ const room = Math.floor((ro - ri) / 6.2); // chars that fit along the ring
+ t.textContent = fanTrunc(n.name || (n.reg || "?"), Math.max(6, room));
+ svg.append(t);
+ }
+
+ function fanCenterLabel(svg, n, r0) {
+ if (!n) return;
+ const words = (n.name || "Dog").split(" ");
+ const lines = [];
+ let line = "";
+ for (const w of words) {
+ if ((line + " " + w).trim().length > 12) { if (line) lines.push(line); line = w; }
+ else line = (line ? line + " " : "") + w;
+ }
+ if (line) lines.push(line);
+ const shown = lines.slice(0, 3);
+ const t = document.createElementNS(SVGNS, "text");
+ t.setAttribute("class", "ped-fan-center-label");
+ t.setAttribute("text-anchor", "middle");
+ const lh = 12, y0 = -(shown.length - 1) * lh / 2;
+ shown.forEach((ln, i) => {
+ const ts = document.createElementNS(SVGNS, "tspan");
+ ts.setAttribute("x", "0");
+ ts.setAttribute("y", fanNum(y0 + i * lh));
+ ts.textContent = ln;
+ t.append(ts);
+ });
+ svg.append(t);
+ }
+
+ function fanTrunc(s, max) { return s.length > max ? s.slice(0, max - 1) + "…" : s; }
+
+ function selectFan(pos) {
+ const n = pedNodes[String(pos)];
+ if (!n || !pedCaption) return;
+ const key = dogKey(n);
+ const bits = [];
+ if (n.reg) bits.push(n.reg);
+ if (n.titles) bits.push(n.titles);
+ if (key && pedRepeat[key] > 1) bits.push("appears ×" + pedRepeat[key]);
+ pedCaption.hidden = false;
+ pedCaption.textContent = (n.name || "(unnamed)") + (bits.length ? " — " + bits.join(" · ") : "");
+ togglePedHighlight(key && pedRepeat[key] > 1 ? key : " "); // clears if not a repeat
+ }
+
+ // Highlight (or unhighlight) every element (tree card or fan wedge) that is the
+ // same dog as `key`.
function togglePedHighlight(key) {
- const cards = pedTree.querySelectorAll(".ped-card[data-dogkey]");
+ const els = pedTree.querySelectorAll("[data-dogkey]");
let lit = false;
- cards.forEach((c) => {
+ els.forEach((c) => {
if (c.dataset.dogkey === key && c.classList.contains("ped-lit")) lit = true;
});
- cards.forEach((c) => c.classList.remove("ped-lit"));
- if (!lit) cards.forEach((c) => { if (c.dataset.dogkey === key) c.classList.add("ped-lit"); });
+ els.forEach((c) => c.classList.remove("ped-lit"));
+ if (!lit) els.forEach((c) => { if (c.dataset.dogkey === key) c.classList.add("ped-lit"); });
}
function buildPedNode(nodes, pos, depth) {
diff --git a/src/changelog.json b/src/changelog.json
index e282661..debea2d 100644
--- a/src/changelog.json
+++ b/src/changelog.json
@@ -1,4 +1,5 @@
[
+ { "date": "2026-07-26", "text": "Added a fan-chart view of the pedigree (toggle it in the header): your dog at the centre with each generation fanning outward as a ring, so many generations fit at once without the tree sprawling sideways — tap a wedge for that dog, and repeated ancestors keep their colour" },
{ "date": "2026-07-26", "text": "Added a Collapse all / Expand all toggle to the pedigree, to fold the whole tree down to your dog or open every branch at once" },
{ "date": "2026-07-26", "text": "The pedigree is now zoomable — use the +/− buttons, ⌘/Ctrl-scroll, or pinch on a phone — to fit a wide tree on screen or zoom in for detail; your zoom level is remembered" },
{ "date": "2026-07-26", "text": "In the pedigree, a dog that fills more than one spot (pedigree collapse, common in a breed's older lines) now carries a ×N badge — tap it to highlight every place that dog appears in the tree" },
diff --git a/src/index.html b/src/index.html
index eeafed2..ee46acf 100644
--- a/src/index.html
+++ b/src/index.html
@@ -281,6 +281,7 @@
🌳 Pedigree
+
@@ -301,6 +302,7 @@
Some ancestors appear in more than one place further back (pedigree collapse). Expand the tree to reveal their ×N badges, then tap one to highlight every spot that dog appears.