977 lines
36 KiB
JavaScript
977 lines
36 KiB
JavaScript
import { CELL_SIZE, MAP_H, MAP_W, clamp, indexOf } from "./mapUtils.js";
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const segmentVectorCache = new WeakMap();
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const pathVectorCache = new WeakMap();
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const coastlineCache = new WeakMap();
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const baseImageCache = new WeakMap();
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const MAX_BASE_CACHE_IMAGES = 4;
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function pointKey(p) {
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return `${p[0]},${p[1]}`;
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}
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function parsePointKey(key) {
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return key.split(",").map(Number);
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}
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function samePoint(a, b, eps = 1e-6) {
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return Math.abs(a[0] - b[0]) <= eps && Math.abs(a[1] - b[1]) <= eps;
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}
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function perpendicularDistance(p, a, b) {
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const dx = b[0] - a[0];
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const dy = b[1] - a[1];
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const len2 = dx * dx + dy * dy;
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if (len2 <= 1e-9) return Math.hypot(p[0] - a[0], p[1] - a[1]);
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const t = clamp(((p[0] - a[0]) * dx + (p[1] - a[1]) * dy) / len2, 0, 1);
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const x = a[0] + dx * t;
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const y = a[1] + dy * t;
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return Math.hypot(p[0] - x, p[1] - y);
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}
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function simplifyRdp(points, tolerance = 0.05) {
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if (!points || points.length <= 2) return points || [];
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let bestIndex = -1;
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let bestDistance = -1;
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const first = points[0];
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const last = points[points.length - 1];
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for (let i = 1; i < points.length - 1; i++) {
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const d = perpendicularDistance(points[i], first, last);
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if (d > bestDistance) {
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bestDistance = d;
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bestIndex = i;
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}
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}
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if (bestDistance <= tolerance) return [first, last];
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const left = simplifyRdp(points.slice(0, bestIndex + 1), tolerance);
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const right = simplifyRdp(points.slice(bestIndex), tolerance);
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return left.slice(0, -1).concat(right);
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}
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function removeCollinear(points) {
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if (!points || points.length <= 2) return points || [];
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const closed = samePoint(points[0], points[points.length - 1]);
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const core = closed ? points.slice(0, -1) : points.slice();
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if (core.length <= 2) return points;
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const out = [];
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const count = core.length;
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for (let i = 0; i < count; i++) {
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const prev = core[(i - 1 + count) % count];
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const cur = core[i];
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const next = core[(i + 1) % count];
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if (!closed && (i === 0 || i === count - 1)) {
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out.push(cur);
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continue;
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}
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const ax = cur[0] - prev[0];
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const ay = cur[1] - prev[1];
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const bx = next[0] - cur[0];
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const by = next[1] - cur[1];
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if (Math.abs(ax * by - ay * bx) > 1e-9) out.push(cur);
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}
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if (closed && out.length) out.push(out[0]);
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return out;
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}
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function chaikin(points, iterations = 1, closed = false) {
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if (!points || points.length < 3 || iterations <= 0) return points || [];
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let result = points.slice();
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for (let iter = 0; iter < iterations; iter++) {
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const src = closed && samePoint(result[0], result[result.length - 1]) ? result.slice(0, -1) : result;
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if (src.length < 3) break;
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const next = [];
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if (!closed) next.push(src[0]);
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const limit = closed ? src.length : src.length - 1;
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for (let i = 0; i < limit; i++) {
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const a = src[i];
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const b = src[(i + 1) % src.length];
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next.push([a[0] * 0.75 + b[0] * 0.25, a[1] * 0.75 + b[1] * 0.25]);
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next.push([a[0] * 0.25 + b[0] * 0.75, a[1] * 0.25 + b[1] * 0.75]);
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}
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if (!closed) next.push(src[src.length - 1]);
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if (closed && next.length) next.push(next[0]);
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result = next;
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}
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return result;
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}
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function traceSegmentChain(edges, adjacency, used, startKey, firstEdgeIndex) {
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const line = [parsePointKey(startKey)];
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let currentKey = startKey;
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let nextEdgeIndex = firstEdgeIndex;
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while (nextEdgeIndex !== undefined && nextEdgeIndex !== null && !used[nextEdgeIndex]) {
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used[nextEdgeIndex] = 1;
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const edge = edges[nextEdgeIndex];
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const toKey = edge.aKey === currentKey ? edge.bKey : edge.aKey;
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line.push(parsePointKey(toKey));
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currentKey = toKey;
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if (currentKey === startKey) break;
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const degree = adjacency.get(currentKey)?.length || 0;
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if (degree !== 2) break;
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nextEdgeIndex = (adjacency.get(currentKey) || []).find((idx) => !used[idx]);
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}
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return line;
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}
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function segmentChains(segments) {
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if (!segments?.length) return [];
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const edges = [];
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const adjacency = new Map();
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for (const seg of segments) {
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const aKey = pointKey(seg[0]);
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const bKey = pointKey(seg[1]);
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if (aKey === bKey) continue;
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const edgeIndex = edges.length;
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edges.push({ aKey, bKey });
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if (!adjacency.has(aKey)) adjacency.set(aKey, []);
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if (!adjacency.has(bKey)) adjacency.set(bKey, []);
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adjacency.get(aKey).push(edgeIndex);
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adjacency.get(bKey).push(edgeIndex);
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}
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const used = new Uint8Array(edges.length);
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const chains = [];
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for (let i = 0; i < edges.length; i++) {
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if (used[i]) continue;
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const edge = edges[i];
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const aDegree = adjacency.get(edge.aKey)?.length || 0;
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const bDegree = adjacency.get(edge.bKey)?.length || 0;
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if (aDegree === 2 && bDegree === 2) continue;
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const startKey = aDegree !== 2 ? edge.aKey : edge.bKey;
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chains.push(traceSegmentChain(edges, adjacency, used, startKey, i));
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}
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for (let i = 0; i < edges.length; i++) {
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if (used[i]) continue;
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chains.push(traceSegmentChain(edges, adjacency, used, edges[i].aKey, i));
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}
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return chains.filter((line) => line.length >= 2);
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}
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function vectorizeSegments(segments, { iterations = 2, tolerance = 0.08 } = {}) {
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if (!segments?.length) return [];
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const cacheKey = `${iterations}:${tolerance}`;
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let cachedByOption = segmentVectorCache.get(segments);
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if (!cachedByOption) {
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cachedByOption = new Map();
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segmentVectorCache.set(segments, cachedByOption);
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}
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if (cachedByOption.has(cacheKey)) return cachedByOption.get(cacheKey);
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const polylines = segmentChains(segments).map((line) => {
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const cleaned = removeCollinear(line);
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const closed = cleaned.length > 2 && samePoint(cleaned[0], cleaned[cleaned.length - 1]);
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const smoothed = chaikin(cleaned, iterations, closed);
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if (closed) return smoothed;
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return simplifyRdp(smoothed, tolerance);
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}).filter((line) => line.length >= 2);
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cachedByOption.set(cacheKey, polylines);
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return polylines;
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}
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function getCoastlineSegments(map) {
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if (!map?.sea) return [];
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const cached = coastlineCache.get(map.sea);
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if (cached) return cached;
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const segments = [];
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for (let y = 0; y < MAP_H; y++) {
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for (let x = 0; x < MAP_W; x++) {
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const i = indexOf(x, y);
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const a = Boolean(map.sea[i]);
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if (x + 1 < MAP_W) {
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const b = Boolean(map.sea[indexOf(x + 1, y)]);
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if (a !== b) segments.push([[x + 1, y], [x + 1, y + 1]]);
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}
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if (y + 1 < MAP_H) {
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const b = Boolean(map.sea[indexOf(x, y + 1)]);
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if (a !== b) segments.push([[x, y + 1], [x + 1, y + 1]]);
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}
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}
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}
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coastlineCache.set(map.sea, segments);
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return segments;
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}
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function vectorPath(path) {
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if (!path || path.length < 2) return [];
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const cached = pathVectorCache.get(path);
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if (cached) return cached;
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const points = path.map(([x, y]) => [x * CELL_SIZE + CELL_SIZE / 2, y * CELL_SIZE + CELL_SIZE / 2]);
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const simplified = simplifyRdp(points, CELL_SIZE * 0.34);
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const smoothed = chaikin(simplified, path.length > 6 ? 1 : 0, false);
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pathVectorCache.set(path, smoothed);
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return smoothed;
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}
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function drawPolylinePoints(ctx, points) {
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if (!points || points.length < 2) return;
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ctx.moveTo(points[0][0], points[0][1]);
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for (let k = 1; k < points.length; k++) ctx.lineTo(points[k][0], points[k][1]);
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}
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function drawVectorSegments(ctx, segments, color, width, dashed = false, vectorOptions = {}) {
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const { offsetX = 0, offsetY = 0, ...shapeOptions } = vectorOptions || {};
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const polylines = vectorizeSegments(segments, shapeOptions);
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if (!polylines.length) return;
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ctx.save();
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ctx.strokeStyle = color;
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ctx.lineWidth = width;
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ctx.lineCap = "round";
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ctx.lineJoin = "round";
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if (dashed) ctx.setLineDash([6, 5]);
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for (const line of polylines) {
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ctx.beginPath();
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ctx.moveTo((line[0][0] + offsetX) * CELL_SIZE, (line[0][1] + offsetY) * CELL_SIZE);
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for (let k = 1; k < line.length; k++) ctx.lineTo((line[k][0] + offsetX) * CELL_SIZE, (line[k][1] + offsetY) * CELL_SIZE);
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ctx.stroke();
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}
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ctx.restore();
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}
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function sampleCellIndex(fx, fy) {
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const x = Math.max(0, Math.min(MAP_W - 1, Math.floor(fx)));
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const y = Math.max(0, Math.min(MAP_H - 1, Math.floor(fy)));
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return indexOf(x, y);
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}
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function isWaterSample(map, fx, fy) {
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// The generated terrain arrays are cell-centered, while pixels are drawn across
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// each cell. Water/land classification must therefore follow the discrete sea
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// mask, not the interpolated elevation value. Interpolating elevation near a
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// coast makes the right/bottom side of land cells inherit sea values and leaves
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// visible unpainted strips inside the smoothed coastline.
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return Boolean(map.sea[sampleCellIndex(fx, fy)]);
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}
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function distToNearest(points, x, y, fallback = 999) {
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let best = fallback;
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for (const p of points) best = Math.min(best, Math.hypot(p.x - x, p.y - y));
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return best;
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}
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function blendOutside(color, isInside) {
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if (isInside) return color;
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return [
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Math.round(color[0] * 0.8 + 50),
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Math.round(color[1] * 0.8 + 50),
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Math.round(color[2] * 0.8 + 50),
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];
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}
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function fieldSample(field, fx, fy) {
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const sx = Math.max(0, Math.min(MAP_W - 1, fx));
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const sy = Math.max(0, Math.min(MAP_H - 1, fy));
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const x0 = Math.floor(sx);
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const y0 = Math.floor(sy);
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const x1 = Math.max(0, Math.min(MAP_W - 1, x0 + 1));
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const y1 = Math.max(0, Math.min(MAP_H - 1, y0 + 1));
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const tx = sx - x0;
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const ty = sy - y0;
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const a = field[indexOf(x0, y0)];
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const b = field[indexOf(x1, y0)];
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const c = field[indexOf(x0, y1)];
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const d = field[indexOf(x1, y1)];
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return ((a * (1 - tx) + b * tx) * (1 - ty)) + ((c * (1 - tx) + d * tx) * ty);
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}
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function interpolateColorStops(value, stops) {
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if (value <= stops[0][0]) return stops[0][1].slice();
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for (let i = 1; i < stops.length; i++) {
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const [v, c] = stops[i];
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const [pv, pc] = stops[i - 1];
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if (value <= v) {
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const t = clamp((value - pv) / Math.max(0.0001, v - pv));
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return [
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Math.round(pc[0] + (c[0] - pc[0]) * t),
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Math.round(pc[1] + (c[1] - pc[1]) * t),
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Math.round(pc[2] + (c[2] - pc[2]) * t),
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];
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}
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}
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return stops[stops.length - 1][1].slice();
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}
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function terrainColorContinuous(map, fx, fy, mode) {
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const i = sampleCellIndex(fx, fy);
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const isInside = Boolean(map.prefectureMask[i]);
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let color;
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if (isWaterSample(map, fx, fy)) {
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const depth = clamp(((map.seaLevel ?? 0.285) + 0.065 - fieldSample(map.elevation, fx, fy)) * 2.4);
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color = [Math.round(170 + depth * 5), Math.round(218 + depth * 10), Math.round(255 - depth * 5)];
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} else if (mode === "development") {
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const dCity = distToNearest(map.modernCities, fx, fy);
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const urban = clamp(1 - dCity / 25);
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const density = map.populationDensity ? fieldSample(map.populationDensity, fx, fy) : urban;
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const base = 235;
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color = [
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Math.round(base + density * 20),
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Math.round(base + density * 5),
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Math.round(230 + density * 10),
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];
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} else {
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// 地形の基底色は標高のみに従わせる。
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// 谷や微地形の見え方は陰影側で制御し、谷底だけが不自然に茶色化しないようにする。
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const e = fieldSample(map.elevation, fx, fy);
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color = interpolateColorStops(clamp(e), [
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[0.20, [231, 236, 223]],
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[0.30, [223, 231, 214]],
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[0.40, [213, 223, 201]],
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[0.50, [204, 215, 188]],
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[0.58, [195, 207, 173]],
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[0.65, [185, 196, 158]],
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[0.71, [177, 181, 141]],
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[0.76, [169, 164, 125]],
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[0.81, [157, 145, 105]],
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[0.86, [144, 128, 89]],
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[0.91, [130, 111, 79]],
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[0.95, [118, 103, 89]],
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[0.985, [146, 141, 133]],
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[1.00, [183, 179, 171]],
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]);
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}
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return blendOutside(color, isInside);
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}
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function terrainShadeContinuous(map, fx, fy) {
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const step = 0.50;
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const eC = fieldSample(map.elevation, fx, fy);
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const eL = fieldSample(map.elevation, fx - step, fy);
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const eR = fieldSample(map.elevation, fx + step, fy);
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const eU = fieldSample(map.elevation, fx, fy - step);
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const eD = fieldSample(map.elevation, fx, fy + step);
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// x は東向き, y は南向き。法線は (-dz/dx, -dz/dy, 1)。
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// 描画では地形生成上の差分をやや誇張し、粗いDEMでも山腹の起伏を読ませる。
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const dzdx = (eR - eL) / (step * 2);
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const dzdy = (eD - eU) / (step * 2);
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const nx = -dzdx * 4.4;
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const ny = -dzdy * 4.4;
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const nz = 1.0;
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const nLen = Math.hypot(nx, ny, nz) || 1;
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const lx = -0.5;
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const ly = -0.5;
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const lz = 0.7071067811865476;
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const hill = clamp((nx * lx + ny * ly + nz * lz) / nLen * 0.58 + 0.48);
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const slope = map.slope ? fieldSample(map.slope, fx, fy) : 0;
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const valley = map.valleyField ? fieldSample(map.valleyField, fx, fy) : 0;
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const ravine = map.visibleRavineField ? fieldSample(map.visibleRavineField, fx, fy) : 0;
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const tex = map.surfaceTextureField ? fieldSample(map.surfaceTextureField, fx, fy) : 0;
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const rvL = map.visibleRavineField ? fieldSample(map.visibleRavineField, fx - 0.90, fy) : 0;
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const rvR = map.visibleRavineField ? fieldSample(map.visibleRavineField, fx + 0.90, fy) : 0;
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const rvU = map.visibleRavineField ? fieldSample(map.visibleRavineField, fx, fy - 0.90) : 0;
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const rvD = map.visibleRavineField ? fieldSample(map.visibleRavineField, fx, fy + 0.90) : 0;
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const ravineRelief = (rvL - rvR) * 0.26 + (rvU - rvD) * 0.20;
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const concavity = clamp(((eL + eR + eU + eD) * 0.25 - eC) * 9.0, -0.18, 0.18);
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// 谷底の色保持は少し残すが、以前より圧縮を弱めて陰影の振幅を大きくする。
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const valleyFloor = clamp((valley - 0.18) * 1.45) * clamp((0.24 - slope) * 3.6);
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let shade = 0.66 + hill * 0.50 + ravineRelief - ravine * 0.12 - tex * 0.042 - concavity * 0.16 + slope * 0.030;
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if (shade < 1) shade = 1 - (1 - shade) * (1 - valleyFloor * 0.26);
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else shade = 1 + (shade - 1) * (1 - valleyFloor * 0.12);
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return clamp(shade, 0.54, 1.26);
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}
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function discreteColor(map, x, y, mode) {
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const i = indexOf(x, y);
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let color;
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if (map.sea[i]) {
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color = [160, 205, 239];
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} else if (mode === "landuse") {
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const colors = {
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0: [244, 247, 240], // rural / natural land
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1: [222, 236, 188], // farmland
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2: [232, 222, 214], // old urban
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3: [221, 188, 184], // CBD / DID core
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4: [235, 225, 236], // suburb
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5: [223, 224, 232], // industrial
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6: [232, 237, 232], // logistics
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7: [231, 236, 246], // new town
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8: [243, 233, 210], // roadside
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9: [221, 236, 216], // forest / mountain land
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};
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color = colors[map.landuse[i]] || colors[0];
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} else if (mode === "admin") {
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const palette = [
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[250, 245, 242], [245, 250, 245], [245, 245, 252],
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[252, 250, 242], [250, 245, 250], [242, 250, 250]
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];
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const a = map.adminId[i];
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color = a >= 0 ? palette[a % palette.length] : [240, 242, 240];
|
|
} else {
|
|
color = terrainColorContinuous(map, x, y, "terrain");
|
|
}
|
|
return blendOutside(color, Boolean(map.prefectureMask[i]));
|
|
}
|
|
|
|
function baseCacheKey(mode, continuousTerrain) {
|
|
const continuousModes = ["terrain", "development", "all"];
|
|
if (continuousTerrain && continuousModes.includes(mode)) {
|
|
return `continuous:${mode === "all" ? "terrain" : mode}`;
|
|
}
|
|
return `discrete:${mode}`;
|
|
}
|
|
|
|
function getCachedBaseImage(ctx, map, mode, continuousTerrain) {
|
|
let cache = baseImageCache.get(map);
|
|
if (!cache) {
|
|
cache = new Map();
|
|
baseImageCache.set(map, cache);
|
|
}
|
|
|
|
const key = baseCacheKey(mode, continuousTerrain);
|
|
let image = cache.get(key);
|
|
if (image) return image;
|
|
|
|
const width = MAP_W * CELL_SIZE;
|
|
const height = MAP_H * CELL_SIZE;
|
|
const img = ctx.createImageData(width, height);
|
|
const continuousModes = ["terrain", "development", "all"];
|
|
|
|
if (continuousTerrain && continuousModes.includes(mode)) {
|
|
for (let py = 0; py < height; py++) {
|
|
const fy = py / CELL_SIZE;
|
|
for (let px = 0; px < width; px++) {
|
|
const fx = px / CELL_SIZE;
|
|
const [r, g, b] = terrainColorContinuous(map, fx, fy, mode === "all" ? "terrain" : mode);
|
|
const shade = terrainShadeContinuous(map, fx, fy);
|
|
|
|
const ii = (py * width + px) * 4;
|
|
img.data[ii] = Math.round(r * shade);
|
|
img.data[ii + 1] = Math.round(g * shade);
|
|
img.data[ii + 2] = Math.round(b * shade);
|
|
img.data[ii + 3] = 255;
|
|
}
|
|
}
|
|
} else {
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const [r, g, b] = discreteColor(map, x, y, mode);
|
|
for (let dy = 0; dy < CELL_SIZE; dy++) {
|
|
for (let dx = 0; dx < CELL_SIZE; dx++) {
|
|
const ii = ((y * CELL_SIZE + dy) * width + (x * CELL_SIZE + dx)) * 4;
|
|
img.data[ii] = r;
|
|
img.data[ii + 1] = g;
|
|
img.data[ii + 2] = b;
|
|
img.data[ii + 3] = 255;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
cache.set(key, img);
|
|
if (cache.size > MAX_BASE_CACHE_IMAGES) cache.delete(cache.keys().next().value);
|
|
return img;
|
|
}
|
|
|
|
function drawBase(ctx, map, mode, continuousTerrain) {
|
|
ctx.putImageData(getCachedBaseImage(ctx, map, mode, continuousTerrain), 0, 0);
|
|
}
|
|
|
|
function drawRiverPath(ctx, map, path, color, widthFn, alpha = 1) {
|
|
if (!path || path.length < 2) return;
|
|
ctx.save();
|
|
ctx.lineCap = "round";
|
|
ctx.lineJoin = "round";
|
|
for (let k = 0; k < path.length - 1; k++) {
|
|
const [x1, y1] = path[k];
|
|
const [x2, y2] = path[k + 1];
|
|
const i1 = indexOf(x1, y1);
|
|
const i2 = indexOf(x2, y2);
|
|
const strength = Math.max((map.river?.[i1] || 0) + (map.flowAccum?.[i1] || 0) * 0.95, (map.river?.[i2] || 0) + (map.flowAccum?.[i2] || 0) * 0.95);
|
|
ctx.strokeStyle = color;
|
|
ctx.globalAlpha = alpha;
|
|
ctx.lineWidth = widthFn(strength, k / Math.max(1, path.length - 1));
|
|
ctx.beginPath();
|
|
ctx.moveTo(x1 * CELL_SIZE + CELL_SIZE / 2, y1 * CELL_SIZE + CELL_SIZE / 2);
|
|
ctx.lineTo(x2 * CELL_SIZE + CELL_SIZE / 2, y2 * CELL_SIZE + CELL_SIZE / 2);
|
|
ctx.stroke();
|
|
}
|
|
ctx.restore();
|
|
}
|
|
|
|
function drawPath(ctx, path, color, width, dashed = false) {
|
|
const points = vectorPath(path);
|
|
if (points.length < 2) return;
|
|
ctx.save();
|
|
ctx.lineCap = "round";
|
|
ctx.lineJoin = "round";
|
|
ctx.strokeStyle = color;
|
|
ctx.lineWidth = width;
|
|
if (dashed) ctx.setLineDash([8, 6]);
|
|
ctx.beginPath();
|
|
drawPolylinePoints(ctx, points);
|
|
ctx.stroke();
|
|
ctx.restore();
|
|
}
|
|
|
|
// 魚の骨（私鉄記号）スタイルを描画するための専用関数
|
|
function drawRailway(ctx, path, color, lineWidth, tickLen, spacing) {
|
|
const points = vectorPath(path);
|
|
if (points.length < 2) return;
|
|
ctx.save();
|
|
ctx.lineCap = "butt";
|
|
ctx.lineJoin = "round";
|
|
ctx.strokeStyle = color;
|
|
|
|
// 中心の実線を描画
|
|
ctx.lineWidth = lineWidth;
|
|
ctx.beginPath();
|
|
drawPolylinePoints(ctx, points);
|
|
ctx.stroke();
|
|
|
|
// 棘（クロスハッチ）を描画
|
|
ctx.lineWidth = 1.0;
|
|
ctx.beginPath();
|
|
let carry = spacing * 0.5;
|
|
for (let k = 0; k < points.length - 1; k++) {
|
|
const [x1, y1] = points[k];
|
|
const [x2, y2] = points[k + 1];
|
|
const dx = x2 - x1;
|
|
const dy = y2 - y1;
|
|
const dist = Math.hypot(dx, dy);
|
|
if (dist <= 0.001) continue;
|
|
|
|
const nx = dx / dist;
|
|
const ny = dy / dist;
|
|
const px = -ny * (tickLen / 2);
|
|
const py = nx * (tickLen / 2);
|
|
|
|
let d = carry;
|
|
while (d < dist) {
|
|
const cx = x1 + nx * d;
|
|
const cy = y1 + ny * d;
|
|
ctx.moveTo(cx + px, cy + py);
|
|
ctx.lineTo(cx - px, cy - py);
|
|
d += spacing;
|
|
}
|
|
carry = d - dist;
|
|
}
|
|
ctx.stroke();
|
|
ctx.restore();
|
|
}
|
|
|
|
function drawSegments(ctx, segments, color, width, dashed = false) {
|
|
ctx.save();
|
|
ctx.strokeStyle = color;
|
|
ctx.lineWidth = width;
|
|
ctx.lineCap = "round";
|
|
ctx.lineJoin = "round";
|
|
if (dashed) ctx.setLineDash([6, 5]);
|
|
|
|
for (const seg of segments) {
|
|
ctx.beginPath();
|
|
ctx.moveTo(seg[0][0] * CELL_SIZE, seg[0][1] * CELL_SIZE);
|
|
ctx.lineTo(seg[1][0] * CELL_SIZE, seg[1][1] * CELL_SIZE);
|
|
ctx.stroke();
|
|
}
|
|
ctx.restore();
|
|
}
|
|
|
|
function drawUrbanAreas(ctx, map, mode) {
|
|
const visibleModes = ["all", "modern", "development", "landuse", "admin"];
|
|
if (!visibleModes.includes(mode)) return;
|
|
|
|
const detailedColors = {
|
|
2: "rgba(223, 214, 206, 0.72)",
|
|
3: "rgba(215, 175, 172, 0.88)",
|
|
4: "rgba(231, 219, 231, 0.68)",
|
|
5: "rgba(218, 218, 226, 0.64)",
|
|
6: "rgba(225, 230, 225, 0.56)",
|
|
7: "rgba(229, 234, 242, 0.64)",
|
|
8: "rgba(231, 219, 231, 0.68)",
|
|
};
|
|
const cityColor = "rgba(232, 222, 228, 0.60)";
|
|
const cbdColor = "rgba(215, 175, 172, 0.84)";
|
|
|
|
ctx.save();
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
const areaMask = map.humanRegionMask || map.prefectureMask;
|
|
if (areaMask && !areaMask[i]) continue;
|
|
const lu = map.landuse[i];
|
|
let fill = null;
|
|
if (mode === "landuse") fill = detailedColors[lu] || null;
|
|
else if (lu === 3) fill = cbdColor;
|
|
else if (lu === 2 || lu === 4 || lu === 5 || lu === 6 || lu === 7 || lu === 8) fill = cityColor;
|
|
if (!fill) continue;
|
|
|
|
const px = x * CELL_SIZE;
|
|
const py = y * CELL_SIZE;
|
|
ctx.fillStyle = fill;
|
|
ctx.fillRect(px, py, CELL_SIZE, CELL_SIZE);
|
|
}
|
|
}
|
|
ctx.restore();
|
|
}
|
|
|
|
function drawDebugCells(ctx, map, field, color) {
|
|
if (!field) return;
|
|
ctx.save();
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
const debugMask = map.humanRegionMask || map.prefectureMask;
|
|
if (!debugMask[i] || map.sea[i]) continue;
|
|
const v = clamp(field[i] || 0, 0, 1);
|
|
if (v <= 0.12) continue;
|
|
ctx.fillStyle = color(v);
|
|
ctx.fillRect(x * CELL_SIZE, y * CELL_SIZE, CELL_SIZE, CELL_SIZE);
|
|
}
|
|
}
|
|
ctx.restore();
|
|
}
|
|
|
|
function prefectureRegionColor(id) {
|
|
const palette = [
|
|
[234, 220, 214], [218, 232, 218], [218, 224, 238], [238, 232, 208],
|
|
[232, 218, 232], [214, 232, 234], [235, 224, 216], [222, 236, 210],
|
|
];
|
|
return palette[Math.abs(id) % palette.length];
|
|
}
|
|
|
|
function drawPrefectureRegionFill(ctx, map, mode) {
|
|
if (!["all", "admin", "admin-debug", "borders-debug"].includes(mode)) return;
|
|
const ids = map.prefectureRegionId;
|
|
if (!ids) return;
|
|
const alpha = mode === "borders-debug" ? 0.34 : mode === "admin-debug" ? 0.26 : 0.18;
|
|
ctx.save();
|
|
ctx.globalAlpha = alpha;
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
const id = ids[i];
|
|
if (map.sea[i] || id < 0) continue;
|
|
const [r, g, b] = prefectureRegionColor(id);
|
|
ctx.fillStyle = `rgb(${r}, ${g}, ${b})`;
|
|
ctx.fillRect(x * CELL_SIZE, y * CELL_SIZE, CELL_SIZE, CELL_SIZE);
|
|
}
|
|
}
|
|
ctx.restore();
|
|
}
|
|
|
|
function dot(ctx, p, radius, fill, stroke = "white") {
|
|
ctx.beginPath();
|
|
ctx.arc(p.x * CELL_SIZE + CELL_SIZE / 2, p.y * CELL_SIZE + CELL_SIZE / 2, radius, 0, Math.PI * 2);
|
|
ctx.fillStyle = fill;
|
|
ctx.fill();
|
|
ctx.lineWidth = 1.2;
|
|
ctx.strokeStyle = stroke;
|
|
ctx.stroke();
|
|
}
|
|
|
|
function boxesOverlap(a, b, pad = 3) {
|
|
return !(a.x2 + pad < b.x1 || a.x1 - pad > b.x2 || a.y2 + pad < b.y1 || a.y1 - pad > b.y2);
|
|
}
|
|
|
|
function labelWithCollision(ctx, p, occupied) {
|
|
if (!p.name) return false;
|
|
ctx.save();
|
|
ctx.font = "600 11.5px ui-sans-serif, system-ui, -apple-system, sans-serif";
|
|
const baseX = p.x * CELL_SIZE + CELL_SIZE / 2;
|
|
const baseY = p.y * CELL_SIZE + CELL_SIZE / 2;
|
|
const textW = ctx.measureText(p.name).width;
|
|
const textH = 12;
|
|
const candidates = [
|
|
[7, -4], [7, 13], [-textW - 7, -4], [-textW - 7, 13],
|
|
[-textW / 2, -12], [-textW / 2, 20], [12, 4], [-textW - 12, 4],
|
|
];
|
|
|
|
for (const [ox, oy] of candidates) {
|
|
const x = baseX + ox;
|
|
const y = baseY + oy;
|
|
const box = { x1: x - 2, y1: y - textH, x2: x + textW + 2, y2: y + 4 };
|
|
if (box.x1 < 0 || box.y1 < 0 || box.x2 > MAP_W * CELL_SIZE || box.y2 > MAP_H * CELL_SIZE) continue;
|
|
if (occupied.some((b) => boxesOverlap(box, b))) continue;
|
|
|
|
ctx.lineJoin = "round";
|
|
ctx.lineWidth = 3.5;
|
|
ctx.strokeStyle = "rgba(255, 255, 255, 0.95)";
|
|
ctx.strokeText(p.name, x, y);
|
|
|
|
ctx.fillStyle = p.isPrefecturalCapital ? "#111111" : "#333333";
|
|
ctx.fillText(p.name, x, y);
|
|
occupied.push(box);
|
|
ctx.restore();
|
|
return true;
|
|
}
|
|
ctx.restore();
|
|
return false;
|
|
}
|
|
|
|
function drawLabels(ctx, points, limit = Infinity) {
|
|
const occupied = [];
|
|
const prioritized = points
|
|
.filter((p) => p?.name)
|
|
.map((p) => ({ ...p, labelPriority: (p.labelPriorityBase || 0) + (p.isPrefecturalCapital ? 1000 : 0) + (p.population || 0) / 900 + (p.portClass === "major" ? 170 : p.portClass === "regional" ? 95 : 0) }))
|
|
.sort((a, b) => b.labelPriority - a.labelPriority);
|
|
for (const p of prioritized.slice(0, limit)) labelWithCollision(ctx, p, occupied);
|
|
}
|
|
|
|
function drawScaleBar(ctx) {
|
|
const kmPerCell = 1;
|
|
const targetKm = 50;
|
|
const lengthCells = Math.max(8, Math.round(targetKm / kmPerCell));
|
|
const lengthPx = lengthCells * CELL_SIZE;
|
|
const margin = 14;
|
|
const x = margin;
|
|
const y = margin + 18;
|
|
|
|
ctx.save();
|
|
ctx.lineCap = "butt";
|
|
ctx.strokeStyle = "rgba(0,0,0,0.78)";
|
|
ctx.lineWidth = 2.2;
|
|
ctx.fillStyle = "rgba(255,255,255,0.92)";
|
|
ctx.fillRect(x - 8, y - 18, lengthPx + 16, 30);
|
|
ctx.strokeStyle = "rgba(80,80,80,0.22)";
|
|
ctx.strokeRect(x - 8, y - 18, lengthPx + 16, 30);
|
|
ctx.strokeStyle = "rgba(30,30,30,0.82)";
|
|
ctx.beginPath();
|
|
ctx.moveTo(x, y);
|
|
ctx.lineTo(x + lengthPx, y);
|
|
ctx.stroke();
|
|
for (let t = 0; t <= 2; t++) {
|
|
const tx = x + (lengthPx * t) / 2;
|
|
ctx.beginPath();
|
|
ctx.moveTo(tx, y - 5);
|
|
ctx.lineTo(tx, y + 5);
|
|
ctx.stroke();
|
|
}
|
|
ctx.fillStyle = "rgba(20,20,20,0.88)";
|
|
ctx.font = "600 11px ui-sans-serif, system-ui, -apple-system, sans-serif";
|
|
ctx.textAlign = "center";
|
|
ctx.fillText(`${targetKm} km`, x + lengthPx / 2, y - 7);
|
|
ctx.restore();
|
|
}
|
|
|
|
export function drawMap(canvas, map, options) {
|
|
const ctx = canvas.getContext("2d");
|
|
if (!ctx) return;
|
|
|
|
const mode = options.mode || "all";
|
|
const showFeatures = options.showFeatures !== false;
|
|
const showLabels = options.showLabels !== false;
|
|
|
|
const width = MAP_W * CELL_SIZE;
|
|
const height = MAP_H * CELL_SIZE;
|
|
canvas.width = width;
|
|
canvas.height = height;
|
|
|
|
// 1. Base Terrain & Urban
|
|
drawBase(ctx, map, mode, true);
|
|
drawUrbanAreas(ctx, map, mode);
|
|
const coastSegments = getCoastlineSegments(map);
|
|
drawVectorSegments(ctx, coastSegments, "rgba(120, 175, 210, 0.22)", 2.2, false, { iterations: 2, tolerance: 0.06, offsetX: -0.5, offsetY: -0.5 });
|
|
drawVectorSegments(ctx, coastSegments, "rgba(248, 250, 242, 0.68)", 1.1, false, { iterations: 2, tolerance: 0.06, offsetX: -0.5, offsetY: -0.5 });
|
|
|
|
// 2. Rivers
|
|
const waterBlue = "rgba(160, 205, 240, 1)";
|
|
const mediumBlue = "rgba(160, 205, 240, 0.88)";
|
|
const riverStrengthForPath = (path) => {
|
|
if (!path || path.length === 0) return 0;
|
|
let peak = 0;
|
|
let tail = 0;
|
|
const tailStart = Math.max(0, path.length - Math.min(path.length, 8));
|
|
let tailCount = 0;
|
|
for (let k = 0; k < path.length; k++) {
|
|
const [x, y] = path[k];
|
|
const i = indexOf(x, y);
|
|
const strength = (map.river?.[i] || 0) + (map.flowAccum?.[i] || 0) * 0.75;
|
|
peak = Math.max(peak, strength);
|
|
if (k >= tailStart) {
|
|
tail += strength;
|
|
tailCount++;
|
|
}
|
|
}
|
|
return Math.max(peak, tail / Math.max(1, tailCount));
|
|
};
|
|
// Draw a dendritic river network. Width is intentionally separated by
|
|
// river order: small streams are hairline/low-alpha, tributaries are thin,
|
|
// and only trunk rivers get a modestly wider stroke.
|
|
for (const path of map.smallStreams || []) {
|
|
const strength = riverStrengthForPath(path);
|
|
if ((path?.length || 0) < 5 || strength < 0.045) continue;
|
|
drawRiverPath(ctx, map, path, "rgba(150, 198, 235, 1)", (s) => s > 0.45 ? 0.58 : s > 0.22 ? 0.48 : 0.36, 0.34);
|
|
}
|
|
for (const path of map.tributaryRivers || []) {
|
|
const strength = riverStrengthForPath(path);
|
|
if ((path?.length || 0) < 9 || strength < 0.45) continue;
|
|
drawRiverPath(ctx, map, path, mediumBlue, (s, t) => {
|
|
const downstreamBoost = 0.92 + t * 0.18;
|
|
if (s > 1.65) return 1.35 * downstreamBoost;
|
|
if (s > 0.95) return 1.12 * downstreamBoost;
|
|
return 0.94 * downstreamBoost;
|
|
}, 0.92);
|
|
}
|
|
for (const path of map.mainRivers || []) {
|
|
const strength = riverStrengthForPath(path);
|
|
if ((path?.length || 0) < 9) continue;
|
|
drawRiverPath(ctx, map, path, waterBlue, (s, t) => {
|
|
const downstreamBoost = 0.96 + t * 0.24;
|
|
if (s > 2.35) return 2.15 * downstreamBoost;
|
|
if (s > 1.45) return 1.86 * downstreamBoost;
|
|
return 1.55 * downstreamBoost;
|
|
}, 1.0);
|
|
}
|
|
|
|
const showHistory = ["history", "all", "terrain"].includes(mode);
|
|
const showModern = ["modern", "all", "development", "landuse", "admin-debug", "borders-debug"].includes(mode);
|
|
const showRoads = ["all", "development"].includes(mode);
|
|
const showMinorRoads = ["all", "modern", "development"].includes(mode);
|
|
const showAdmin = ["admin", "all", "admin-debug", "borders-debug"].includes(mode);
|
|
|
|
// 3. Borders
|
|
const showPrefectureRegions = ["all", "admin", "admin-debug", "borders-debug"].includes(mode);
|
|
if (showPrefectureRegions) drawPrefectureRegionFill(ctx, map, mode);
|
|
|
|
if (showAdmin && map.adminBorders) {
|
|
drawVectorSegments(ctx, map.adminBorders, "rgba(255, 255, 255, 0.8)", 2.8, false, { iterations: 1, tolerance: 0.05, offsetX: -0.5, offsetY: -0.5 });
|
|
drawVectorSegments(ctx, map.adminBorders, "rgba(150, 140, 150, 0.9)", 1.2, true, { iterations: 1, tolerance: 0.05, offsetX: -0.5, offsetY: -0.5 });
|
|
}
|
|
if (mode === "admin-debug" || mode === "borders-debug") {
|
|
// Keep the natural barrier heatmap subtle. A dense cell fill can look like
|
|
// artificial horizontal hatching, so only strong terrain dividers are shown.
|
|
drawDebugCells(ctx, map, map.naturalBarrierScore, (v) => v < 0.42 ? "rgba(0,0,0,0)" : `rgba(255, 120, 40, ${0.025 + v * 0.075})`);
|
|
if (map.adminDebug?.compartmentBorders) drawSegments(ctx, map.adminDebug.compartmentBorders, "rgba(45, 95, 160, 0.72)", 1.0, true);
|
|
for (const p of map.adminDebug?.lowlandAdminSeeds || []) dot(ctx, p, 3.2, "rgba(255,255,255,0.9)", "rgba(40,150,95,0.95)");
|
|
}
|
|
|
|
if (showPrefectureRegions && map.regionalPrefectureBorders) {
|
|
drawVectorSegments(ctx, map.regionalPrefectureBorders, "rgba(255, 255, 255, 0.90)", 4.2, false, { iterations: 2, tolerance: 0.06, offsetX: -0.5, offsetY: -0.5 });
|
|
drawVectorSegments(ctx, map.regionalPrefectureBorders, "rgba(82, 60, 102, 0.96)", 1.8, true, { iterations: 2, tolerance: 0.06, offsetX: -0.5, offsetY: -0.5 });
|
|
}
|
|
|
|
if (!showPrefectureRegions) {
|
|
const finalPrefectureBorders = (map.regionalPrefectureBorders && map.regionalPrefectureBorders.length) ? map.regionalPrefectureBorders : map.prefectureBorder;
|
|
drawVectorSegments(ctx, finalPrefectureBorders, "rgba(255, 255, 255, 0.95)", 5.0, false, { iterations: 2, tolerance: 0.06, offsetX: -0.5, offsetY: -0.5 });
|
|
drawVectorSegments(ctx, finalPrefectureBorders, "rgba(110, 90, 110, 1)", 2.2, true, { iterations: 2, tolerance: 0.06, offsetX: -0.5, offsetY: -0.5 });
|
|
}
|
|
|
|
if (!showFeatures) return;
|
|
|
|
// 4. Transport casings. Layer order: local roads, trunk roads, railways, expressways.
|
|
if (showHistory) {
|
|
for (const path of map.premodernRoads) drawPath(ctx, path, "rgba(210, 210, 210, 0.7)", 2.5);
|
|
}
|
|
if (showMinorRoads) {
|
|
for (const path of map.minorRoads || []) drawPath(ctx, path, "rgba(205, 205, 205, 0.60)", 2.35);
|
|
}
|
|
if (showRoads) {
|
|
for (const path of map.nationalRoads) drawPath(ctx, path, "rgba(190, 175, 140, 1)", 3.8);
|
|
for (const path of map.ringRoads || []) drawPath(ctx, path, "rgba(190, 175, 140, 1)", 3.8);
|
|
for (const path of map.externalRoads) drawPath(ctx, path, "rgba(190, 175, 140, 1)", 3.8);
|
|
}
|
|
if (showModern || showRoads) {
|
|
for (const path of map.railways) drawPath(ctx, path, "rgba(255, 255, 255, 0.78)", 3.6);
|
|
for (const path of map.branchRailways) drawPath(ctx, path, "rgba(255, 255, 255, 0.64)", 2.6);
|
|
for (const path of map.externalRailways) drawPath(ctx, path, "rgba(255, 255, 255, 0.78)", 3.6);
|
|
}
|
|
if (showRoads) {
|
|
for (const path of map.expressways) drawPath(ctx, path, "rgba(105, 125, 105, 0.78)", 4.6);
|
|
for (const path of map.externalExpressways) drawPath(ctx, path, "rgba(105, 125, 105, 0.78)", 4.6);
|
|
}
|
|
|
|
// 5. Transport fills. Expressways remain above railways; railways sit above ordinary roads.
|
|
if (showHistory) {
|
|
for (const path of map.premodernRoads) drawPath(ctx, path, "rgba(255, 255, 255, 1)", 1.2, false);
|
|
}
|
|
if (showMinorRoads) {
|
|
for (const path of map.minorRoads || []) drawPath(ctx, path, "rgba(255, 255, 255, 0.94)", 1.1, false);
|
|
}
|
|
if (showRoads) {
|
|
for (const path of map.nationalRoads) drawPath(ctx, path, "rgba(245, 225, 130, 1)", 2.0);
|
|
for (const path of map.ringRoads || []) drawPath(ctx, path, "rgba(245, 225, 130, 1)", 2.0);
|
|
for (const path of map.externalRoads) drawPath(ctx, path, "rgba(245, 225, 130, 1)", 2.0);
|
|
}
|
|
if (showModern || showRoads) {
|
|
for (const path of map.railways) drawRailway(ctx, path, "rgba(95, 95, 95, 1)", 1.55, 5.0, 7.0);
|
|
for (const path of map.branchRailways) drawRailway(ctx, path, "rgba(125, 125, 125, 1)", 1.05, 4.0, 6.0);
|
|
for (const path of map.externalRailways) drawRailway(ctx, path, "rgba(95, 95, 95, 1)", 1.55, 5.0, 7.0);
|
|
}
|
|
if (showRoads) {
|
|
for (const path of map.expressways) drawPath(ctx, path, "rgba(135, 160, 135, 0.88)", 2.4);
|
|
for (const path of map.externalExpressways) drawPath(ctx, path, "rgba(135, 160, 135, 0.88)", 2.4);
|
|
}
|
|
|
|
// 6. Icons & Labels
|
|
if (["admin", "admin-debug", "borders-debug"].includes(mode)) {
|
|
for (const p of map.adminCenters || []) dot(ctx, p, 2.8, "rgba(255,255,255,0.96)", "rgba(75,60,90,0.95)");
|
|
}
|
|
|
|
if (showModern) {
|
|
for (const p of map.stations) dot(ctx, p, 2.5, "#fff", "#444");
|
|
const allLayerTowns = mode === "all"
|
|
? [
|
|
...(map.markets || []).filter((p) => (p.population || 0) >= 5000),
|
|
...(map.villages || []).filter((p) => (p.population || 0) >= 5000),
|
|
].filter((p) => !(map.modernCities || []).some((c) => c.x === p.x && c.y === p.y))
|
|
: [];
|
|
for (const p of allLayerTowns) dot(ctx, p, 3.1, "rgba(244, 164, 118, 0.92)", "rgba(255,255,255,0.88)");
|
|
for (const p of map.modernCities) {
|
|
const popRadius = p.population ? Math.min(9.4, 3.8 + Math.sqrt(p.population) / 360) : 4.8;
|
|
dot(ctx, p, popRadius, "rgba(240, 110, 110, 0.95)", "rgba(255,255,255,0.9)");
|
|
if (p.isPrefecturalCapital) dot(ctx, p, popRadius + 3.4, "transparent", "rgba(200,80,80,0.9)");
|
|
else if (p.isRegionalCapital) dot(ctx, p, popRadius + 2.4, "transparent", "rgba(190,95,95,0.62)");
|
|
}
|
|
for (const p of map.interchanges || []) dot(ctx, p, 2.7, "rgba(250, 250, 245, 0.95)", "rgba(95, 125, 95, 0.95)");
|
|
for (const p of map.logisticsParks || []) dot(ctx, p, 2.4, "rgba(235, 238, 230, 0.95)", "rgba(105, 125, 105, 0.88)");
|
|
if (mode === "admin-debug" || mode === "borders-debug") {
|
|
for (const p of map.externalGateways || []) dot(ctx, p, 5.5, "rgba(255,255,255,0.95)", "rgba(40,80,170,0.95)");
|
|
for (const p of map.transportDebug?.missingRequiredNodes || []) dot(ctx, p, 6.5, "rgba(255,80,80,0.95)", "rgba(80,20,20,0.95)");
|
|
}
|
|
}
|
|
|
|
if (showLabels) {
|
|
const prefectureLabels = showPrefectureRegions ? (map.prefectureRegions || []).map((p) => ({ ...p, labelPriorityBase: p.labelPriorityBase || 900 })) : [];
|
|
if (mode === "admin") {
|
|
drawLabels(ctx, [...prefectureLabels, ...(map.adminCenters || [])], Infinity);
|
|
drawScaleBar(ctx);
|
|
return;
|
|
}
|
|
if (mode === "admin-debug" || mode === "borders-debug") {
|
|
drawLabels(ctx, [...prefectureLabels, ...(map.adminCenters || [])], Infinity);
|
|
drawScaleBar(ctx);
|
|
return;
|
|
}
|
|
const allLayerTowns = mode === "all"
|
|
? [
|
|
...(map.markets || []).filter((p) => (p.population || 0) >= 5000),
|
|
...(map.villages || []).filter((p) => (p.population || 0) >= 5000),
|
|
]
|
|
.filter((p) => !(map.modernCities || []).some((c) => c.x === p.x && c.y === p.y))
|
|
.map((p) => ({ ...p, forceAllLayerTownLabel: true, labelPriorityBase: p.kind === "Village" || p.kind === "Valley Village" || p.kind === "Coastal Village" ? 75 : 135 }))
|
|
: [];
|
|
const important = [
|
|
...prefectureLabels,
|
|
...map.modernCities,
|
|
...map.ports,
|
|
...(map.logisticsParks || []).map((p) => ({ ...p, labelPriorityBase: 60 })),
|
|
...(map.satelliteCities || []),
|
|
...allLayerTowns,
|
|
].filter((p) => p.forceAllLayerTownLabel || p.insidePrefecture || p.isRegionalCapital || p.kind === "External Gateway" || (p.population || 0) >= 5000);
|
|
drawLabels(ctx, important, mode === "all" ? 85 : 60);
|
|
}
|
|
drawScaleBar(ctx);
|
|
}
|