Nikolay Tatarinov
6529d7370e
- Introduced .editorconfig for consistent coding styles across the project. - Added .golangci.yml for Go linting configuration. - Updated AGENTS.md to clarify project structure and components. - Enhanced CONTRIBUTING.md with Makefile usage for common tasks. - Updated Dockerfiles to use Go 1.24 and improved build instructions. - Refined README.md and deployment documentation for clarity. - Added testing documentation in testing.md for backend and frontend tests. - Introduced Makefile for streamlined development commands and tasks.
96 lines
3.7 KiB
TypeScript
96 lines
3.7 KiB
TypeScript
import L, { Bounds, LatLng, Point } from 'leaflet'
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export const TileSize = 100
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export const HnHMaxZoom = 6
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export const HnHMinZoom = 1
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export const HnHDefaultZoom = 6
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/** When scaleFactor exceeds this, render one label per tile instead of a full grid (avoids 100k+ DOM nodes at zoom 1). */
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const GRID_COORD_SCALE_FACTOR_THRESHOLD = 8
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export interface GridCoordLayerOptions extends L.GridLayerOptions {
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visible?: boolean
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}
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export const GridCoordLayer = L.GridLayer.extend({
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options: {
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visible: true,
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},
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createTile(coords: { x: number; y: number; z: number }) {
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if (!this.options.visible) {
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const element = document.createElement('div')
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element.style.width = TileSize + 'px'
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element.style.height = TileSize + 'px'
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element.classList.add('map-tile')
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return element
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}
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const element = document.createElement('div')
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element.style.width = TileSize + 'px'
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element.style.height = TileSize + 'px'
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element.style.position = 'relative'
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element.classList.add('map-tile')
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const scaleFactor = Math.pow(2, HnHMaxZoom - coords.z)
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const topLeft = { x: coords.x * scaleFactor, y: coords.y * scaleFactor }
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const bottomRight = { x: topLeft.x + scaleFactor - 1, y: topLeft.y + scaleFactor - 1 }
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const swPoint = { x: topLeft.x * TileSize, y: topLeft.y * TileSize }
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const tileWidthPx = scaleFactor * TileSize
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const tileHeightPx = scaleFactor * TileSize
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if (scaleFactor > GRID_COORD_SCALE_FACTOR_THRESHOLD) {
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// Low zoom: one label per tile to avoid hundreds of thousands of DOM nodes (Reset view freeze fix)
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const textElement = document.createElement('div')
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textElement.classList.add('map-tile-text')
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textElement.textContent = `(${topLeft.x}, ${topLeft.y})`
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textElement.style.position = 'absolute'
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textElement.style.left = '2px'
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textElement.style.top = '2px'
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textElement.style.fontSize = Math.max(8, 12 - Math.log2(scaleFactor) * 2) + 'px'
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element.appendChild(textElement)
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return element
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}
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for (let gx = topLeft.x; gx <= bottomRight.x; gx++) {
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for (let gy = topLeft.y; gy <= bottomRight.y; gy++) {
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const leftPx = tileWidthPx > 0 ? ((gx * TileSize - swPoint.x) / tileWidthPx) * TileSize : 0
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const topPx = tileHeightPx > 0 ? ((gy * TileSize - swPoint.y) / tileHeightPx) * TileSize : 0
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const textElement = document.createElement('div')
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textElement.classList.add('map-tile-text')
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textElement.textContent = `(${gx}, ${gy})`
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textElement.style.position = 'absolute'
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textElement.style.left = leftPx + 2 + 'px'
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textElement.style.top = topPx + 2 + 'px'
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if (scaleFactor > 1) {
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textElement.style.fontSize = Math.max(8, 12 - Math.log2(scaleFactor) * 2) + 'px'
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}
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element.appendChild(textElement)
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}
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}
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return element
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},
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}) as unknown as new (options?: GridCoordLayerOptions) => L.GridLayer
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export const ImageIcon = L.Icon.extend({
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options: {
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iconSize: [32, 32],
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iconAnchor: [16, 16],
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},
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}) as unknown as new (options?: L.IconOptions) => L.Icon
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const latNormalization = (90.0 * TileSize) / 2500000.0
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const lngNormalization = (180.0 * TileSize) / 2500000.0
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const HnHProjection = {
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project(latlng: LatLng) {
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return new Point(latlng.lat / latNormalization, latlng.lng / lngNormalization)
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},
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unproject(point: Point) {
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return new LatLng(point.x * latNormalization, point.y * lngNormalization)
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},
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bounds: (() => new Bounds([-latNormalization, -lngNormalization], [latNormalization, lngNormalization]))(),
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}
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export const HnHCRS = L.extend({}, L.CRS.Simple, {
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projection: HnHProjection,
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}) as L.CRS
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