Graham McIntire
f4a177c9d0
Previously every layer toggle triggered 21 fresh tile requests with the new layer in the URL — ~21 server-side SVG renders, plus the round-trip overhead. Even with the GridCache fix the server still spent real CPU generating thousands of <rect>s per tile, and the user felt it. Add /weather/cells: a single JSON endpoint returning every layer field for every cell in the requested viewport. The hook fetches once on mount, time change, or pan/zoom, caches the cells in memory, and paints them via L.svgOverlay. Layer switches now re-color the same cached cells locally — zero network, zero server CPU. The single SVG uses lat/lon coords with preserveAspectRatio="none"; Leaflet stretches it linearly to the bbox. There is mild equirect→ mercator distortion at low zoom over CONUS but it's imperceptible at typical use (z6+) and the layer-toggle UX win is large. Tile endpoint kept for back-compat. svgOverlay opacity matches the prior tile renderer's 0.55 fill-opacity.
1075 lines
41 KiB
TypeScript
1075 lines
41 KiB
TypeScript
// assets/js/weather_map_hook.ts
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import { updateGridOverlay } from "./maidenhead_grid"
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// --- Type definitions ---
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interface RGB {
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r: number
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g: number
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b: number
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}
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interface Breakpoint extends RGB {
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value: number
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}
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interface ContinuousColorScale {
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breakpoints: Breakpoint[]
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trueColor?: never
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format: (v: number | null) => string
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label: string
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unit: string
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}
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interface BooleanColorScale {
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breakpoints: null
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trueColor: RGB
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format: (v: boolean | null) => string
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label: string
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unit: string
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}
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type ColorScale = ContinuousColorScale | BooleanColorScale
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type LayerId = keyof typeof COLOR_SCALES
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interface WeatherPoint {
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lat: number
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lon: number
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valid_time: string | null
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temperature: number | null
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dewpoint_depression: number | null
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surface_rh: number | null
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surface_pressure_mb: number | null
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surface_refractivity: number | null
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refractivity_gradient: number | null
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bl_height: number | null
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pwat: number | null
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temp_850mb: number | null
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dewpoint_850mb: number | null
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temp_700mb: number | null
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dewpoint_700mb: number | null
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lapse_rate: number | null
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mid_lapse_rate: number | null
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inversion_strength: number | null
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inversion_base_m: number | null
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ducting: boolean | null
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duct_base_m: number | null
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duct_strength: number | null
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[key: string]: unknown
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}
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interface DetailRow {
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label?: string
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value?: string
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color?: string
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separator?: boolean
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}
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interface ViewportCell {
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lat: number
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lon: number
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temperature: number | null
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dewpoint_depression: number | null
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surface_rh: number | null
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surface_pressure_mb: number | null
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surface_refractivity: number | null
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refractivity_gradient: number | null
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bl_height: number | null
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pwat: number | null
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temp_850mb: number | null
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dewpoint_850mb: number | null
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temp_700mb: number | null
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dewpoint_700mb: number | null
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lapse_rate: number | null
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mid_lapse_rate: number | null
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inversion_strength: number | null
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inversion_base_m: number | null
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ducting: boolean | null
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duct_base_m: number | null
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duct_strength: number | null
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}
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interface WeatherMapHook extends ViewHook {
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map: L.Map
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weatherOverlay: L.SVGOverlay | null
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weatherCellsUrl: string
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selectedLayer: LayerId
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// Cells most recently fetched. Layer switches re-render from this
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// without going to the server.
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currentCells: ViewportCell[]
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cellsRequestSeq: number
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inflightCellsAbort: AbortController | null
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moveDebounce: ReturnType<typeof setTimeout> | null
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detailPanel: HTMLElement | null
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escHint: HTMLDivElement
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clickMarker: L.LayerGroup
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legend: L.Control
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legendContent: HTMLElement
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gridLayer: L.LayerGroup
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gridVisible: boolean
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radarLayer: L.TileLayer.WMS | null
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radarRefreshTimer: ReturnType<typeof setInterval> | null
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timelineEl: HTMLElement | null
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timelineData: string[]
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selectedTime: string | null
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// Whether the currently rendered timeline DOM matches `timelineData`.
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// Selection-only updates can patch button state without rebuilding;
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// a data change forces a full rebuild.
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timelineRenderedKey: string
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playbackTimer: ReturnType<typeof setInterval> | null
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_escHandler: (e: KeyboardEvent) => void
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_layerObserver: MutationObserver
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visibilityHandler: (() => void) | null
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mounted(this: WeatherMapHook): void
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destroyed(this: WeatherMapHook): void
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reconnected(this: WeatherMapHook): void
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positionDetailPanel(this: WeatherMapHook): void
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renderLayer(this: WeatherMapHook): void
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fetchAndPaintCells(this: WeatherMapHook, opts?: { force?: boolean }): Promise<void>
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paintOverlay(this: WeatherMapHook): void
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refreshLegend(this: WeatherMapHook): void
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buildLegendContent(this: WeatherMapHook): string
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renderTimeline(this: WeatherMapHook): void
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applyTimelineSelection(this: WeatherMapHook): void
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selectTimelineTime(this: WeatherMapHook, time: string): void
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startPlayback(this: WeatherMapHook): void
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stopPlayback(this: WeatherMapHook): void
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}
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// --- Helpers ---
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function isMobile(): boolean {
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return window.innerWidth < 768
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}
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const COLOR_SCALES = {
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refractivity_gradient: {
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breakpoints: [
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{ value: -500, r: 0, g: 255, b: 163 },
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{ value: -300, r: 125, g: 255, b: 212 },
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{ value: -200, r: 255, g: 229, b: 102 },
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{ value: -100, r: 255, g: 144, b: 68 },
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{ value: 0, r: 255, g: 79, b: 79 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(0)} N/km` : "N/A",
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label: "Refractivity Gradient",
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unit: "N/km"
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},
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bl_height: {
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breakpoints: [
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{ value: 0, r: 0, g: 255, b: 163 },
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{ value: 500, r: 125, g: 255, b: 212 },
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{ value: 1000, r: 255, g: 229, b: 102 },
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{ value: 2000, r: 255, g: 144, b: 68 },
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{ value: 3000, r: 255, g: 79, b: 79 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(0)} m` : "N/A",
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label: "Boundary Layer Height",
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unit: "m"
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},
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dewpoint_depression: {
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breakpoints: [
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{ value: 0, r: 0, g: 255, b: 163 },
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{ value: 5, r: 125, g: 255, b: 212 },
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{ value: 10, r: 255, g: 229, b: 102 },
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{ value: 20, r: 255, g: 144, b: 68 },
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{ value: 30, r: 255, g: 79, b: 79 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} \u00b0C` : "N/A",
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label: "Dewpoint Depression (T - Td)",
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unit: "\u00b0C"
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},
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pwat: {
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breakpoints: [
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{ value: 0, r: 139, g: 90, b: 43 },
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{ value: 15, r: 194, g: 165, b: 116 },
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{ value: 30, r: 173, g: 216, b: 230 },
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{ value: 45, r: 65, g: 105, b: 225 },
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{ value: 60, r: 0, g: 0, b: 180 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} mm` : "N/A",
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label: "Precipitable Water",
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unit: "mm"
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},
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temperature: {
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breakpoints: [
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{ value: -20, r: 0, g: 0, b: 200 },
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{ value: 0, r: 100, g: 149, b: 237 },
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{ value: 15, r: 255, g: 255, b: 150 },
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{ value: 30, r: 255, g: 140, b: 0 },
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{ value: 45, r: 200, g: 0, b: 0 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} \u00b0C (${(v * 9/5 + 32).toFixed(0)} \u00b0F)` : "N/A",
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label: "Surface Temperature",
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unit: "\u00b0C"
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},
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ducting: {
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breakpoints: null,
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trueColor: { r: 0, g: 255, b: 163 },
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format: (v: boolean | null): string => v ? "Yes" : "No",
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label: "Ducting Detected",
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unit: ""
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},
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surface_rh: {
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breakpoints: [
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{ value: 0, r: 255, g: 144, b: 68 },
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{ value: 30, r: 255, g: 229, b: 102 },
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{ value: 60, r: 125, g: 255, b: 212 },
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{ value: 80, r: 0, g: 255, b: 163 },
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{ value: 100, r: 0, g: 200, b: 130 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(0)}%` : "N/A",
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label: "Relative Humidity",
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unit: "%"
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},
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surface_refractivity: {
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breakpoints: [
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{ value: 250, r: 255, g: 79, b: 79 },
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{ value: 300, r: 255, g: 144, b: 68 },
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{ value: 330, r: 255, g: 229, b: 102 },
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{ value: 360, r: 125, g: 255, b: 212 },
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{ value: 400, r: 0, g: 255, b: 163 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} N` : "N/A",
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label: "Surface Refractivity",
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unit: "N"
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},
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temp_850mb: {
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breakpoints: [
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{ value: -20, r: 0, g: 0, b: 200 },
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{ value: -5, r: 100, g: 149, b: 237 },
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{ value: 5, r: 255, g: 255, b: 150 },
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{ value: 15, r: 255, g: 140, b: 0 },
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{ value: 30, r: 200, g: 0, b: 0 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} °C` : "N/A",
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label: "Temperature at 850mb",
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unit: "°C"
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},
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dewpoint_850mb: {
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breakpoints: [
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{ value: -20, r: 139, g: 90, b: 43 },
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{ value: -5, r: 194, g: 165, b: 116 },
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{ value: 5, r: 173, g: 216, b: 230 },
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{ value: 15, r: 65, g: 105, b: 225 },
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{ value: 25, r: 0, g: 0, b: 180 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} °C` : "N/A",
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label: "Dewpoint at 850mb",
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unit: "°C"
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},
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// 700 mb T is the canonical cap indicator over the southern Plains.
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// Cool greens (no cap) → yellow at ~8°C → orange at the cap edge
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// (10°C) → red for strong caps (≥12°C). Warm caps stand out clearly
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// against the cooler "no cap" base map.
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temp_700mb: {
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breakpoints: [
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{ value: -10, r: 0, g: 100, b: 200 },
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{ value: 0, r: 100, g: 180, b: 230 },
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{ value: 5, r: 200, g: 230, b: 200 },
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{ value: 8, r: 255, g: 229, b: 102 },
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{ value: 10, r: 255, g: 144, b: 68 },
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{ value: 14, r: 200, g: 0, b: 0 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} °C` : "N/A",
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label: "Temperature at 700mb",
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unit: "°C"
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},
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dewpoint_700mb: {
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breakpoints: [
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{ value: -30, r: 139, g: 90, b: 43 },
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{ value: -15, r: 194, g: 165, b: 116 },
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{ value: -5, r: 173, g: 216, b: 230 },
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{ value: 5, r: 65, g: 105, b: 225 },
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{ value: 15, r: 0, g: 0, b: 180 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} °C` : "N/A",
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label: "Dewpoint at 700mb",
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unit: "°C"
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},
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lapse_rate: {
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breakpoints: [
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{ value: 0, r: 0, g: 255, b: 163 },
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{ value: 4, r: 125, g: 255, b: 212 },
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{ value: 6.5, r: 255, g: 229, b: 102 },
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{ value: 8, r: 255, g: 144, b: 68 },
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{ value: 10, r: 255, g: 79, b: 79 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} °C/km` : "N/A",
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label: "Lapse Rate",
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unit: "°C/km"
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},
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// EML signature: a steep lapse rate across the 850→700 layer above
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// a moist surface = elevated mixed layer = textbook cap. Red end of
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// the scale (≥7 °C/km) is the cap-mechanism trigger.
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mid_lapse_rate: {
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breakpoints: [
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{ value: 0, r: 0, g: 100, b: 200 },
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{ value: 4, r: 100, g: 200, b: 200 },
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{ value: 6, r: 255, g: 229, b: 102 },
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{ value: 7, r: 255, g: 144, b: 68 },
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{ value: 9, r: 200, g: 0, b: 0 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(1)} °C/km` : "N/A",
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label: "Lapse 850→700",
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unit: "°C/km"
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},
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inversion_strength: {
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breakpoints: [
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{ value: 0, r: 80, g: 80, b: 80 },
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{ value: 1, r: 255, g: 229, b: 102 },
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{ value: 3, r: 125, g: 255, b: 212 },
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{ value: 5, r: 0, g: 255, b: 163 },
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{ value: 10, r: 0, g: 200, b: 130 }
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],
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format: (v: number | null): string => v != null ? (v > 0 ? `+${v.toFixed(1)} °C` : "None") : "N/A",
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label: "Inversion Strength",
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unit: "°C"
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},
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inversion_base_m: {
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breakpoints: [
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{ value: 0, r: 0, g: 255, b: 163 },
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{ value: 500, r: 125, g: 255, b: 212 },
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{ value: 1000, r: 255, g: 229, b: 102 },
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{ value: 2000, r: 255, g: 144, b: 68 },
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{ value: 3000, r: 255, g: 79, b: 79 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(0)} m AGL` : "None",
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label: "Inversion Base Height",
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unit: "m"
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},
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duct_base_m: {
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breakpoints: [
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{ value: 0, r: 0, g: 255, b: 163 },
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{ value: 200, r: 125, g: 255, b: 212 },
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{ value: 500, r: 255, g: 229, b: 102 },
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{ value: 1000, r: 255, g: 144, b: 68 },
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{ value: 2000, r: 255, g: 79, b: 79 }
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],
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format: (v: number | null): string => v != null ? `${v.toFixed(0)} m AGL` : "None",
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label: "Duct Base Height",
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unit: "m"
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},
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duct_strength: {
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breakpoints: [
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{ value: 0, r: 80, g: 80, b: 80 },
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{ value: 5, r: 255, g: 229, b: 102 },
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{ value: 10, r: 125, g: 255, b: 212 },
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{ value: 20, r: 0, g: 255, b: 163 },
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{ value: 40, r: 0, g: 200, b: 130 }
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],
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format: (v: number | null): string => v != null ? (v > 0 ? `${v.toFixed(1)} M-units` : "None") : "N/A",
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label: "Duct Strength",
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unit: "M"
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}
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} as const satisfies Record<string, ColorScale>
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// Round a lat/lon viewport edge out to the cell-grid resolution so two
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// nearby pans hit the same fetch URL (and the browser cache).
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function quantizeBounds(b: L.LatLngBounds, pad = 0.5): { south: number; north: number; west: number; east: number } {
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const south = Math.floor((b.getSouth() - pad) * 8) / 8
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const north = Math.ceil((b.getNorth() + pad) * 8) / 8
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const west = Math.floor((b.getWest() - pad) * 8) / 8
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const east = Math.ceil((b.getEast() + pad) * 8) / 8
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return { south, north, west, east }
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}
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function lerp(a: number, b: number, t: number): number {
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return a + (b - a) * t
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}
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function interpolateRgb(value: number, bps: Breakpoint[]): RGB {
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if (value <= bps[0].value) return { r: bps[0].r, g: bps[0].g, b: bps[0].b }
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const last = bps[bps.length - 1]
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if (value >= last.value) return { r: last.r, g: last.g, b: last.b }
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for (let i = 0; i < bps.length - 1; i++) {
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const a = bps[i]
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const b = bps[i + 1]
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if (value >= a.value && value <= b.value) {
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const t = (value - a.value) / (b.value - a.value)
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return {
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r: Math.round(lerp(a.r, b.r, t)),
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g: Math.round(lerp(a.g, b.g, t)),
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b: Math.round(lerp(a.b, b.b, t))
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}
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}
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}
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return { r: last.r, g: last.g, b: last.b }
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}
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function colorForCell(cell: ViewportCell, layerId: LayerId): string | null {
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const scale = COLOR_SCALES[layerId]
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if (!scale) return null
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const value = cell[layerId as keyof ViewportCell]
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if (scale.breakpoints === null) {
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if (value !== true) return null
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const c = scale.trueColor
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return `rgb(${c.r},${c.g},${c.b})`
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}
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if (typeof value !== "number" || !Number.isFinite(value)) return null
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const c = interpolateRgb(value, scale.breakpoints)
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return `rgb(${c.r},${c.g},${c.b})`
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}
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function buildDetailHTML(point: WeatherPoint): string {
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if (!point) return ""
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const rows: DetailRow[] = [
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{ label: "Temperature", value: COLOR_SCALES.temperature.format(point.temperature), color: "#ff9044" },
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{ label: "Td Depression", value: COLOR_SCALES.dewpoint_depression.format(point.dewpoint_depression), color: "#7dffd4" },
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{ label: "Rel. Humidity", value: COLOR_SCALES.surface_rh.format(point.surface_rh), color: "#00ffa3" },
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{ label: "Sfc Pressure", value: point.surface_pressure_mb != null ? `${point.surface_pressure_mb.toFixed(1)} mb` : "N/A", color: "#aaa" },
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{ label: "Refractivity", value: COLOR_SCALES.surface_refractivity.format(point.surface_refractivity), color: "#00ffa3" },
|
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{ label: "N-Gradient", value: COLOR_SCALES.refractivity_gradient.format(point.refractivity_gradient), color: "#00ffa3" },
|
|
{ label: "BL Height", value: COLOR_SCALES.bl_height.format(point.bl_height), color: "#ffe566" },
|
|
{ label: "PWAT", value: COLOR_SCALES.pwat.format(point.pwat), color: "#4169e1" },
|
|
{ separator: true },
|
|
{ label: "T @ 850mb", value: COLOR_SCALES.temp_850mb.format(point.temp_850mb), color: "#ff9044" },
|
|
{ label: "Td @ 850mb", value: COLOR_SCALES.dewpoint_850mb.format(point.dewpoint_850mb), color: "#4169e1" },
|
|
{ label: "T @ 700mb", value: COLOR_SCALES.temp_700mb.format(point.temp_700mb), color: "#ff9044" },
|
|
{ label: "Td @ 700mb", value: COLOR_SCALES.dewpoint_700mb.format(point.dewpoint_700mb), color: "#4169e1" },
|
|
{ label: "Lapse Rate", value: COLOR_SCALES.lapse_rate.format(point.lapse_rate), color: "#ffe566" },
|
|
{ label: "Lapse 850→700", value: COLOR_SCALES.mid_lapse_rate.format(point.mid_lapse_rate), color: "#ffe566" },
|
|
{ label: "Inversion", value: COLOR_SCALES.inversion_strength.format(point.inversion_strength), color: point.inversion_strength != null && point.inversion_strength > 0 ? "#00ffa3" : "#666" },
|
|
{ label: "Inv. Base", value: COLOR_SCALES.inversion_base_m.format(point.inversion_base_m), color: point.inversion_base_m != null ? "#7dffd4" : "#666" },
|
|
{ separator: true },
|
|
{ label: "Ducting", value: COLOR_SCALES.ducting.format(point.ducting), color: point.ducting ? "#00ffa3" : "#ff4f4f" },
|
|
{ label: "Duct Base", value: COLOR_SCALES.duct_base_m.format(point.duct_base_m), color: point.duct_base_m != null ? "#00ffa3" : "#666" },
|
|
{ label: "Duct Strength", value: COLOR_SCALES.duct_strength.format(point.duct_strength), color: point.duct_strength != null ? "#00ffa3" : "#666" }
|
|
]
|
|
|
|
const mobile = isMobile()
|
|
const closeBtn = mobile
|
|
? `<button onclick="document.getElementById('weather-detail-panel').style.display='none'" style="position:absolute;top:8px;right:10px;background:rgba(255,255,255,0.15);border:none;color:#fff;font-size:18px;line-height:1;width:28px;height:28px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;">×</button>`
|
|
: ""
|
|
const handle = mobile
|
|
? `<div style="display:flex;justify-content:center;padding:6px 0 2px;"><div style="width:32px;height:4px;border-radius:2px;background:rgba(255,255,255,0.3);"></div></div>`
|
|
: ""
|
|
|
|
const tableRows = rows.map(r => {
|
|
if (r.separator) {
|
|
return `<tr><td colspan="2" style="padding:2px 0;"><hr style="border:none;border-top:1px solid rgba(255,255,255,0.1);"></td></tr>`
|
|
}
|
|
return `<tr>
|
|
<td style="padding:3px 8px 3px 0;font-size:12px;white-space:nowrap;"><span style="color:${r.color};">\u25cf</span> ${r.label}</td>
|
|
<td style="padding:3px 0;font-size:12px;text-align:right;font-weight:600;">${r.value}</td>
|
|
</tr>`
|
|
}).join("")
|
|
|
|
const time = point.valid_time
|
|
? new Date(point.valid_time).toISOString().replace("T", " ").slice(0, 16) + " UTC"
|
|
: ""
|
|
|
|
return `<div style="min-width:${mobile ? 'auto' : '240px'};position:relative;">
|
|
${handle}${closeBtn}
|
|
<div style="background:rgba(255,255,255,0.1);padding:6px 10px;">
|
|
<strong style="font-size:14px;">Weather Details</strong>
|
|
</div>
|
|
<div style="padding:6px 10px;">
|
|
<div style="font-size:11px;opacity:0.6;margin-bottom:6px;">
|
|
${point.lat.toFixed(3)}\u00b0N, ${Math.abs(point.lon).toFixed(3)}\u00b0W — ${time}
|
|
</div>
|
|
<table style="width:100%;border-collapse:collapse;">${tableRows}</table>
|
|
</div>
|
|
</div>`
|
|
}
|
|
|
|
// --- Hook ---
|
|
|
|
export const WeatherMap: WeatherMapHook = {
|
|
mounted(this: WeatherMapHook) {
|
|
this.map = L.map(this.el, {
|
|
center: [32.897, -97.038],
|
|
zoom: 7,
|
|
minZoom: 4,
|
|
maxZoom: 10
|
|
})
|
|
|
|
L.tileLayer("https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png", {
|
|
attribution: "© OpenStreetMap contributors",
|
|
maxZoom: 19
|
|
}).addTo(this.map)
|
|
|
|
this.weatherOverlay = null
|
|
this.weatherCellsUrl = "/weather/cells"
|
|
this.selectedLayer = (this.el.dataset.selectedLayer || "temperature") as LayerId
|
|
this.currentCells = []
|
|
this.cellsRequestSeq = 0
|
|
this.inflightCellsAbort = null
|
|
this.moveDebounce = null
|
|
|
|
const storedLayer = localStorage.getItem("weatherMap.selectedLayer")
|
|
if (storedLayer && storedLayer in COLOR_SCALES && storedLayer !== this.selectedLayer) {
|
|
this.selectedLayer = storedLayer as LayerId
|
|
this.pushEvent("select_layer", { layer: storedLayer })
|
|
}
|
|
|
|
this.timelineData = JSON.parse(this.el.dataset.validTimes || "[]")
|
|
this.selectedTime = this.el.dataset.selectedTime || null
|
|
|
|
// Initial paint — fetches cells for the current viewport + time and
|
|
// paints them via L.svgOverlay. Layer switches afterwards re-color
|
|
// these same cells client-side without going to the server.
|
|
this.fetchAndPaintCells()
|
|
|
|
this.handleEvent("update_weather_overlay", ({ selected }: { selected: string | null }) => {
|
|
this.selectedTime = selected
|
|
this.fetchAndPaintCells({ force: true })
|
|
})
|
|
|
|
this.detailPanel = document.getElementById("weather-detail-panel")
|
|
if (this.detailPanel) {
|
|
L.DomEvent.disableClickPropagation(this.detailPanel)
|
|
L.DomEvent.disableScrollPropagation(this.detailPanel)
|
|
}
|
|
|
|
// ESC hint
|
|
this.escHint = document.createElement("div")
|
|
this.escHint.className = "hidden md:block"
|
|
this.escHint.style.cssText = "position:absolute;top:12px;right:12px;z-index:1100;background:rgba(0,0,0,0.6);color:#fff;padding:4px 10px;border-radius:6px;font-size:12px;opacity:0;transition:opacity 0.2s;pointer-events:none;"
|
|
this.escHint.textContent = "Press ESC to close"
|
|
this.el.appendChild(this.escHint)
|
|
|
|
this.handleEvent("point_detail", (detail: WeatherPoint) => {
|
|
if (detail && detail.lat && this.detailPanel) {
|
|
this.detailPanel.innerHTML = buildDetailHTML(detail)
|
|
this.detailPanel.style.display = "block"
|
|
this.escHint.style.opacity = "1"
|
|
this.positionDetailPanel()
|
|
}
|
|
})
|
|
|
|
this.clickMarker = L.layerGroup().addTo(this.map)
|
|
|
|
this.map.on("click", (e: L.LeafletMouseEvent) => {
|
|
this.clickMarker.clearLayers()
|
|
L.circleMarker([e.latlng.lat, e.latlng.lng], {
|
|
radius: 6, color: "#fff", weight: 2,
|
|
fillColor: "#888", fillOpacity: 0.8, interactive: false
|
|
}).addTo(this.clickMarker)
|
|
this.pushEvent("point_detail", { lat: e.latlng.lat, lon: e.latlng.lng })
|
|
})
|
|
|
|
this._escHandler = (e: KeyboardEvent) => {
|
|
if (e.key === "Escape" && this.detailPanel) {
|
|
this.detailPanel.style.display = "none"
|
|
this.detailPanel.innerHTML = ""
|
|
this.clickMarker.clearLayers()
|
|
this.escHint.style.opacity = "0"
|
|
}
|
|
}
|
|
document.addEventListener("keydown", this._escHandler)
|
|
|
|
const controls = document.getElementById("weather-controls")
|
|
if (controls) {
|
|
L.DomEvent.disableClickPropagation(controls)
|
|
L.DomEvent.disableScrollPropagation(controls)
|
|
}
|
|
|
|
// Maidenhead grid overlay
|
|
this.gridLayer = L.layerGroup()
|
|
this.gridVisible = false
|
|
|
|
this.handleEvent("toggle_grid", ({ visible }: { visible: boolean }) => {
|
|
this.gridVisible = visible
|
|
localStorage.setItem("weatherMap.gridVisible", String(visible))
|
|
if (visible) {
|
|
this.gridLayer.addTo(this.map)
|
|
updateGridOverlay(this.map, this.gridLayer)
|
|
} else {
|
|
this.gridLayer.remove()
|
|
}
|
|
})
|
|
|
|
if (localStorage.getItem("weatherMap.gridVisible") === "true") {
|
|
this.pushEvent("toggle_grid", {})
|
|
}
|
|
|
|
// Weather radar overlay (ECCC GeoMet WMS — CONUS + Canada composite dBZ).
|
|
// Lazy-created on first toggle so we don't hit the service until asked.
|
|
this.radarLayer = null
|
|
this.radarRefreshTimer = null
|
|
|
|
this.handleEvent("toggle_radar", ({ visible }: { visible: boolean }) => {
|
|
localStorage.setItem("weatherMap.radarVisible", String(visible))
|
|
if (visible) {
|
|
if (!this.radarLayer) {
|
|
this.radarLayer = L.tileLayer.wms("https://geo.weather.gc.ca/geomet", {
|
|
layers: "Radar_1km_dBZ-Extrapolation",
|
|
format: "image/png",
|
|
transparent: true,
|
|
opacity: 0.55,
|
|
version: "1.3.0",
|
|
attribution: "Radar © Environment and Climate Change Canada"
|
|
})
|
|
}
|
|
this.radarLayer.addTo(this.map)
|
|
// ECCC radar updates every ~6 minutes; force a tile refresh on that
|
|
// cadence so the overlay stays current without a page reload.
|
|
this.radarRefreshTimer = setInterval(() => {
|
|
if (this.radarLayer) {
|
|
// @ts-expect-error setParams exists on WMS TileLayer but isn't in @types/leaflet yet
|
|
this.radarLayer.setParams({ _: Date.now() })
|
|
}
|
|
}, 6 * 60 * 1000)
|
|
} else {
|
|
if (this.radarLayer) this.radarLayer.remove()
|
|
if (this.radarRefreshTimer) {
|
|
clearInterval(this.radarRefreshTimer)
|
|
this.radarRefreshTimer = null
|
|
}
|
|
}
|
|
})
|
|
|
|
if (localStorage.getItem("weatherMap.radarVisible") === "true") {
|
|
this.pushEvent("toggle_radar", {})
|
|
}
|
|
|
|
this.map.on("moveend", () => {
|
|
if (this.gridVisible) {
|
|
updateGridOverlay(this.map, this.gridLayer)
|
|
}
|
|
// Debounce so a rapid pan-zoom only fires one fetch.
|
|
if (this.moveDebounce) clearTimeout(this.moveDebounce)
|
|
this.moveDebounce = setTimeout(() => this.fetchAndPaintCells(), 250)
|
|
})
|
|
|
|
// When the tab becomes visible again, refresh the overlay for the
|
|
// now-current viewport.
|
|
this.visibilityHandler = () => {
|
|
if (document.visibilityState === "visible") {
|
|
this.map.invalidateSize()
|
|
this.fetchAndPaintCells()
|
|
}
|
|
}
|
|
document.addEventListener("visibilitychange", this.visibilityHandler)
|
|
|
|
this._layerObserver = new MutationObserver(() => {
|
|
const newLayer = this.el.dataset.selectedLayer as LayerId | undefined
|
|
if (newLayer && newLayer !== this.selectedLayer) {
|
|
this.selectedLayer = newLayer
|
|
localStorage.setItem("weatherMap.selectedLayer", newLayer)
|
|
// Layer switch: re-color the cells we already have. No network.
|
|
this.paintOverlay()
|
|
this.refreshLegend()
|
|
}
|
|
})
|
|
this._layerObserver.observe(this.el, { attributes: true, attributeFilter: ["data-selected-layer"] })
|
|
|
|
// Mount the legend control once and update its content in place.
|
|
// Removing + re-adding the control on every renderLayer was a
|
|
// visible source of jank during layer switches and time scrubs.
|
|
this.legend = L.control({ position: "topright" })
|
|
this.legend.onAdd = () => {
|
|
this.legendContent = L.DomUtil.create("div")
|
|
this.legendContent.innerHTML = this.buildLegendContent()
|
|
return this.legendContent
|
|
}
|
|
this.legend.addTo(this.map)
|
|
|
|
// --- Forecast timeline ---
|
|
// timelineData and selectedTime are seeded earlier (before the
|
|
// initial renderLayer); the timeline DOM hookup happens here.
|
|
this.timelineEl = document.getElementById("weather-forecast-timeline")
|
|
this.playbackTimer = null
|
|
this.timelineRenderedKey = ""
|
|
|
|
if (this.timelineData.length > 1) {
|
|
this.renderTimeline()
|
|
}
|
|
|
|
this.handleEvent("update_timeline", ({ times, selected }: { times: string[]; selected: string | null }) => {
|
|
// Force a full rebuild when the time set changes — invalidate
|
|
// the rendered key so renderTimeline doesn't take the
|
|
// selection-only patch path against stale buttons.
|
|
const dataChanged = times.join("|") !== this.timelineRenderedKey
|
|
const timeChanged = selected !== this.selectedTime
|
|
this.timelineData = times
|
|
this.selectedTime = selected
|
|
if (dataChanged) this.timelineRenderedKey = ""
|
|
if (timeChanged) this.fetchAndPaintCells({ force: true })
|
|
this.renderTimeline()
|
|
})
|
|
|
|
// Prevent timeline from eating map clicks
|
|
if (this.timelineEl) {
|
|
L.DomEvent.disableClickPropagation(this.timelineEl)
|
|
L.DomEvent.disableScrollPropagation(this.timelineEl)
|
|
}
|
|
},
|
|
|
|
destroyed(this: WeatherMapHook) {
|
|
if (this._layerObserver) this._layerObserver.disconnect()
|
|
if (this._escHandler) document.removeEventListener("keydown", this._escHandler)
|
|
if (this.radarRefreshTimer) clearInterval(this.radarRefreshTimer)
|
|
if (this.playbackTimer !== null) clearInterval(this.playbackTimer)
|
|
if (this.moveDebounce) clearTimeout(this.moveDebounce)
|
|
if (this.inflightCellsAbort) this.inflightCellsAbort.abort()
|
|
if (this.visibilityHandler) {
|
|
document.removeEventListener("visibilitychange", this.visibilityHandler)
|
|
this.visibilityHandler = null
|
|
}
|
|
},
|
|
|
|
reconnected(this: WeatherMapHook) {
|
|
if (this.map) {
|
|
this.map.invalidateSize()
|
|
this.fetchAndPaintCells()
|
|
}
|
|
},
|
|
|
|
positionDetailPanel(this: WeatherMapHook) {
|
|
if (!this.detailPanel || isMobile()) return
|
|
const controls = document.getElementById("weather-controls")
|
|
if (controls) {
|
|
const rect = controls.getBoundingClientRect()
|
|
this.detailPanel.style.left = rect.left + "px"
|
|
this.detailPanel.style.top = (rect.bottom + 8) + "px"
|
|
}
|
|
},
|
|
|
|
renderLayer(this: WeatherMapHook) {
|
|
// Kept for back-compat with code paths that still call it. The
|
|
// server fetch + paint pipeline lives in fetchAndPaintCells; layer
|
|
// switches go through paintOverlay directly.
|
|
this.paintOverlay()
|
|
this.refreshLegend()
|
|
},
|
|
|
|
async fetchAndPaintCells(this: WeatherMapHook, opts: { force?: boolean } = {}) {
|
|
if (!this.selectedTime) {
|
|
this.currentCells = []
|
|
this.paintOverlay()
|
|
return
|
|
}
|
|
|
|
const seq = ++this.cellsRequestSeq
|
|
if (this.inflightCellsAbort) this.inflightCellsAbort.abort()
|
|
this.inflightCellsAbort = new AbortController()
|
|
|
|
const { south, north, west, east } = quantizeBounds(this.map.getBounds())
|
|
const url = `${this.weatherCellsUrl}?time=${encodeURIComponent(this.selectedTime)}&south=${south}&north=${north}&west=${west}&east=${east}`
|
|
|
|
try {
|
|
const resp = await fetch(url, {
|
|
signal: this.inflightCellsAbort.signal,
|
|
cache: opts.force ? "no-cache" : "default"
|
|
})
|
|
if (!resp.ok) return
|
|
const data = await resp.json() as { cells: ViewportCell[]; valid_time: string }
|
|
|
|
// A newer fetch already started — drop this stale response so we
|
|
// don't paint over the in-flight one.
|
|
if (seq !== this.cellsRequestSeq) return
|
|
|
|
this.currentCells = data.cells
|
|
this.paintOverlay()
|
|
} catch (e) {
|
|
const err = e as Error
|
|
if (err.name === "AbortError") return
|
|
console.warn("weather cells fetch failed", err)
|
|
}
|
|
},
|
|
|
|
paintOverlay(this: WeatherMapHook) {
|
|
const cells = this.currentCells
|
|
|
|
if (!cells || cells.length === 0) {
|
|
if (this.weatherOverlay) {
|
|
this.map.removeLayer(this.weatherOverlay)
|
|
this.weatherOverlay = null
|
|
}
|
|
return
|
|
}
|
|
|
|
const halfStep = 0.0625
|
|
const layerId = this.selectedLayer
|
|
|
|
let south = Infinity
|
|
let north = -Infinity
|
|
let west = Infinity
|
|
let east = -Infinity
|
|
for (const c of cells) {
|
|
if (c.lat < south) south = c.lat
|
|
if (c.lat > north) north = c.lat
|
|
if (c.lon < west) west = c.lon
|
|
if (c.lon > east) east = c.lon
|
|
}
|
|
south -= halfStep
|
|
north += halfStep
|
|
west -= halfStep
|
|
east += halfStep
|
|
|
|
const parts: string[] = []
|
|
for (const cell of cells) {
|
|
const color = colorForCell(cell, layerId)
|
|
if (!color) continue
|
|
const x = (cell.lon - halfStep).toFixed(4)
|
|
// SVG y grows downward, so flip latitude.
|
|
const y = (-cell.lat - halfStep).toFixed(4)
|
|
parts.push(`<rect x="${x}" y="${y}" width="0.125" height="0.125" fill="${color}" />`)
|
|
}
|
|
|
|
const svgEl = document.createElementNS("http://www.w3.org/2000/svg", "svg")
|
|
svgEl.setAttribute("viewBox", `${west} ${-north} ${east - west} ${north - south}`)
|
|
svgEl.setAttribute("preserveAspectRatio", "none")
|
|
svgEl.setAttribute("shape-rendering", "crispEdges")
|
|
svgEl.innerHTML = parts.join("")
|
|
|
|
const bounds: L.LatLngBoundsExpression = [[south, west], [north, east]]
|
|
|
|
if (this.weatherOverlay) this.map.removeLayer(this.weatherOverlay)
|
|
this.weatherOverlay = L.svgOverlay(svgEl, bounds, { opacity: 0.55, interactive: false })
|
|
this.weatherOverlay.addTo(this.map)
|
|
},
|
|
|
|
refreshLegend(this: WeatherMapHook) {
|
|
if (this.legendContent) {
|
|
this.legendContent.innerHTML = this.buildLegendContent()
|
|
}
|
|
},
|
|
|
|
buildLegendContent(this: WeatherMapHook): string {
|
|
const layerId = this.selectedLayer
|
|
const scale = COLOR_SCALES[layerId]
|
|
if (!scale) return ""
|
|
|
|
const mobile = isMobile()
|
|
|
|
if (layerId === "ducting") {
|
|
const c = (scale as BooleanColorScale).trueColor
|
|
const wrapStyle = `background:#fff;color:#333;padding:${mobile ? '4px 6px' : '10px 14px'};border-radius:${mobile ? '6px' : '8px'};box-shadow:0 2px 8px rgba(0,0,0,0.3);font-size:${mobile ? '10px' : '13px'};line-height:2;`
|
|
return `<div style="${wrapStyle}"><strong style="color:#333;">${scale.label}</strong><br>` +
|
|
`<span style="background:rgb(${c.r},${c.g},${c.b});width:14px;height:14px;display:inline-block;border-radius:50%;vertical-align:middle;margin-right:6px;border:1px solid rgba(0,0,0,0.15);"></span>Ducting<br>` +
|
|
`<span style="background:transparent;width:14px;height:14px;display:inline-block;border-radius:50%;vertical-align:middle;margin-right:6px;border:1px solid rgba(0,0,0,0.15);"></span>None</div>`
|
|
}
|
|
|
|
const bp = (scale as ContinuousColorScale).breakpoints
|
|
|
|
if (mobile) {
|
|
const wrapStyle = "background:#fff;color:#333;padding:4px 6px;border-radius:6px;box-shadow:0 1px 4px rgba(0,0,0,0.3);font-size:10px;line-height:1.6;"
|
|
return `<div style="${wrapStyle}">` + bp.map(b =>
|
|
`<span style="background:rgb(${b.r},${b.g},${b.b});width:10px;height:10px;display:inline-block;border-radius:50%;vertical-align:middle;margin-right:3px;border:1px solid rgba(0,0,0,0.15);"></span>${b.value}`
|
|
).join("<br>") + "</div>"
|
|
}
|
|
|
|
const wrapStyle = "background:#fff;color:#333;padding:10px 14px;border-radius:8px;box-shadow:0 2px 8px rgba(0,0,0,0.3);font-size:13px;line-height:2;"
|
|
return `<div style="${wrapStyle}"><strong style="color:#333;">${scale.label}</strong><br>` +
|
|
bp.map(b =>
|
|
`<span style="background:rgb(${b.r},${b.g},${b.b});width:14px;height:14px;display:inline-block;border-radius:50%;vertical-align:middle;margin-right:6px;border:1px solid rgba(0,0,0,0.15);"></span><span style="color:#333;">${b.value} ${scale.unit}</span>`
|
|
).join("<br>") + "</div>"
|
|
},
|
|
|
|
renderTimeline(this: WeatherMapHook) {
|
|
if (!this.timelineEl || this.timelineData.length === 0) {
|
|
if (this.timelineEl) this.timelineEl.style.display = "none"
|
|
this.timelineRenderedKey = ""
|
|
return
|
|
}
|
|
|
|
// Selection-only change: skip the full innerHTML rebuild, just
|
|
// restyle the active vs inactive buttons. The rendered button set
|
|
// is keyed by the timeline data — if the data is unchanged, the
|
|
// existing buttons + listeners stay attached.
|
|
const dataKey = this.timelineData.join("|")
|
|
if (this.timelineRenderedKey === dataKey && this.timelineData.length > 1) {
|
|
this.applyTimelineSelection()
|
|
return
|
|
}
|
|
this.timelineRenderedKey = dataKey
|
|
|
|
if (this.timelineData.length === 1) {
|
|
const dt = new Date(this.timelineData[0])
|
|
const utcLabel = `${dt.getUTCHours().toString().padStart(2, "0")}:00 UTC`
|
|
const dateLabel = `${dt.getUTCFullYear()}-${(dt.getUTCMonth() + 1).toString().padStart(2, "0")}-${dt.getUTCDate().toString().padStart(2, "0")}`
|
|
this.timelineEl.style.display = "block"
|
|
this.timelineEl.innerHTML = `
|
|
<div style="background:rgba(0,0,0,0.85);border-radius:12px;padding:6px 14px;display:flex;gap:8px;align-items:center;box-shadow:0 2px 12px rgba(0,0,0,0.4);font-size:11px;color:rgba(255,255,255,0.6);">
|
|
<span>Data: ${dateLabel} ${utcLabel}</span>
|
|
</div>`
|
|
return
|
|
}
|
|
|
|
const now = new Date()
|
|
type TItem = { time: string; dt: Date; isSelected: boolean; isPast: boolean; offsetH: number; label: string }
|
|
const items: TItem[] = this.timelineData.map((time) => {
|
|
const dt = new Date(time)
|
|
const isSelected = time === this.selectedTime
|
|
const isPast = dt.getTime() < now.getTime() - 1800000
|
|
return { time, dt, isSelected, isPast, offsetH: 0, label: "" }
|
|
})
|
|
|
|
const closestIdx = items.reduce((best, item, i) =>
|
|
Math.abs(item.dt.getTime() - now.getTime()) < Math.abs(items[best].dt.getTime() - now.getTime()) ? i : best, 0)
|
|
|
|
// Label offsets relative to the "Now" slot, not wall-clock. If we
|
|
// round from wall-clock, the hour after "Now" rounds to "0h" when
|
|
// the clock is past the half-hour, which reads as a second "now".
|
|
const anchorMs = items[closestIdx].dt.getTime()
|
|
items.forEach((t, i) => {
|
|
const diff = Math.round((t.dt.getTime() - anchorMs) / 3600000)
|
|
t.offsetH = diff
|
|
if (i === closestIdx) {
|
|
t.label = "Now"
|
|
} else {
|
|
t.label = diff > 0 ? `+${diff}h` : `${diff}h`
|
|
}
|
|
})
|
|
|
|
const mobile = isMobile()
|
|
const btnPad = mobile ? "3px 5px" : "4px 8px"
|
|
const btnMinW = mobile ? "32px" : "38px"
|
|
const btnFont = mobile ? "10px" : "11px"
|
|
const subFont = mobile ? "8px" : "9px"
|
|
|
|
const buttons = items.map(t => {
|
|
const bg = t.isSelected ? "#7dffd4" : (t.isPast ? "rgba(255,255,255,0.08)" : "rgba(255,255,255,0.15)")
|
|
const fg = t.isSelected ? "#000" : (t.isPast ? "rgba(255,255,255,0.4)" : "#fff")
|
|
const border = t.isSelected ? "2px solid #7dffd4" : "1px solid rgba(255,255,255,0.2)"
|
|
const weight = t.isSelected ? "700" : "400"
|
|
const utcLabel = `${t.dt.getUTCHours().toString().padStart(2, "0")}:00`
|
|
return `<button data-time="${t.time}" style="
|
|
padding:${btnPad};font-size:${btnFont};font-weight:${weight};
|
|
background:${bg};color:${fg};border:${border};border-radius:6px;
|
|
cursor:pointer;white-space:nowrap;min-width:${btnMinW};
|
|
transition:background 0.15s;
|
|
">${t.label}<br><span style="font-size:${subFont};opacity:0.7;">${utcLabel}</span></button>`
|
|
}).join("")
|
|
|
|
const labelText = mobile ? "Forecast" : "Weather Forecast"
|
|
const isPlaying = this.playbackTimer !== null
|
|
const playBg = isPlaying ? "#7dffd4" : "rgba(255,255,255,0.15)"
|
|
const playFg = isPlaying ? "#000" : "#fff"
|
|
const ctrlFont = mobile ? "10px" : "11px"
|
|
const ctrlPad = mobile ? "1px 5px" : "2px 7px"
|
|
|
|
this.timelineEl.style.display = "block"
|
|
this.timelineEl.innerHTML = `
|
|
<div style="background:rgba(0,0,0,0.85);border-radius:12px;padding:${mobile ? "4px 6px" : "6px 10px"};display:flex;gap:${mobile ? "2px" : "3px"};align-items:center;box-shadow:0 2px 12px rgba(0,0,0,0.4);overflow-x:auto;max-width:calc(100vw - 1rem);">
|
|
<div style="display:flex;flex-direction:column;align-items:center;gap:3px;margin-right:6px;flex-shrink:0;">
|
|
<span style="font-size:${mobile ? "9px" : "10px"};color:rgba(255,255,255,0.5);white-space:nowrap;">${labelText}</span>
|
|
<div style="display:flex;gap:3px;">
|
|
<button data-timeline-play style="
|
|
padding:${ctrlPad};font-size:${ctrlFont};line-height:1;
|
|
background:${playBg};color:${playFg};
|
|
border:1px solid rgba(255,255,255,0.2);border-radius:4px;
|
|
cursor:pointer;" title="Play forecast animation">▶</button>
|
|
<button data-timeline-stop style="
|
|
padding:${ctrlPad};font-size:${ctrlFont};line-height:1;
|
|
background:rgba(255,255,255,0.15);color:#fff;
|
|
border:1px solid rgba(255,255,255,0.2);border-radius:4px;
|
|
cursor:pointer;" title="Stop and return to now">■</button>
|
|
</div>
|
|
</div>
|
|
${buttons}
|
|
</div>`
|
|
|
|
this.timelineEl.querySelectorAll<HTMLButtonElement>("button[data-time]").forEach(btn => {
|
|
btn.addEventListener("click", () => {
|
|
const time = btn.dataset.time!
|
|
// A manual click interrupts playback — the user has taken over.
|
|
this.stopPlayback()
|
|
this.selectTimelineTime(time)
|
|
})
|
|
})
|
|
|
|
const playBtn = this.timelineEl.querySelector<HTMLButtonElement>("button[data-timeline-play]")
|
|
if (playBtn) playBtn.addEventListener("click", () => this.startPlayback())
|
|
|
|
const stopBtn = this.timelineEl.querySelector<HTMLButtonElement>("button[data-timeline-stop]")
|
|
if (stopBtn) stopBtn.addEventListener("click", () => this.stopPlayback())
|
|
},
|
|
|
|
// Update the active/inactive styling on existing timeline buttons
|
|
// without re-running `innerHTML`. Called when only `selectedTime`
|
|
// changes; `renderTimeline` falls through to a full rebuild whenever
|
|
// `timelineData` itself changes.
|
|
applyTimelineSelection(this: WeatherMapHook) {
|
|
if (!this.timelineEl) return
|
|
const now = Date.now()
|
|
|
|
this.timelineEl.querySelectorAll<HTMLButtonElement>("button[data-time]").forEach(btn => {
|
|
const time = btn.dataset.time!
|
|
const dt = new Date(time)
|
|
const isSelected = time === this.selectedTime
|
|
const isPast = dt.getTime() < now - 1800000
|
|
|
|
btn.style.background = isSelected ? "#7dffd4" : (isPast ? "rgba(255,255,255,0.08)" : "rgba(255,255,255,0.15)")
|
|
btn.style.color = isSelected ? "#000" : (isPast ? "rgba(255,255,255,0.4)" : "#fff")
|
|
btn.style.border = isSelected ? "2px solid #7dffd4" : "1px solid rgba(255,255,255,0.2)"
|
|
btn.style.fontWeight = isSelected ? "700" : "400"
|
|
})
|
|
|
|
const playBtn = this.timelineEl.querySelector<HTMLButtonElement>("button[data-timeline-play]")
|
|
if (playBtn) {
|
|
const isPlaying = this.playbackTimer !== null
|
|
playBtn.style.background = isPlaying ? "#7dffd4" : "rgba(255,255,255,0.15)"
|
|
playBtn.style.color = isPlaying ? "#000" : "#fff"
|
|
}
|
|
},
|
|
|
|
selectTimelineTime(this: WeatherMapHook, time: string) {
|
|
this.selectedTime = time
|
|
this.renderLayer()
|
|
this.renderTimeline()
|
|
this.pushEvent("select_time", { time })
|
|
},
|
|
|
|
startPlayback(this: WeatherMapHook) {
|
|
// Restarting re-seeds at "now" so repeated clicks don't resume
|
|
// mid-loop — users expect "play from the start".
|
|
if (this.playbackTimer !== null) {
|
|
clearInterval(this.playbackTimer)
|
|
this.playbackTimer = null
|
|
}
|
|
|
|
if (this.timelineData.length < 2) return
|
|
|
|
const now = Date.now()
|
|
const nowIdx = this.timelineData.reduce((best, time, i) => {
|
|
const d = Math.abs(new Date(time).getTime() - now)
|
|
const bestD = Math.abs(new Date(this.timelineData[best]).getTime() - now)
|
|
return d < bestD ? i : best
|
|
}, 0)
|
|
|
|
// Iterate "now" forward through the end of the forecast then loop.
|
|
const playable = this.timelineData.slice(nowIdx)
|
|
if (playable.length < 2) return
|
|
|
|
let cursor = 0
|
|
const step = () => {
|
|
this.selectTimelineTime(playable[cursor])
|
|
cursor = (cursor + 1) % playable.length
|
|
}
|
|
|
|
// Assign the handle before the first step so renderTimeline sees
|
|
// playbackTimer !== null and paints Play as active.
|
|
this.playbackTimer = setInterval(step, 1000)
|
|
step()
|
|
},
|
|
|
|
stopPlayback(this: WeatherMapHook) {
|
|
if (this.playbackTimer !== null) {
|
|
clearInterval(this.playbackTimer)
|
|
this.playbackTimer = null
|
|
}
|
|
|
|
if (this.timelineData.length === 0) {
|
|
this.renderTimeline()
|
|
return
|
|
}
|
|
|
|
const now = Date.now()
|
|
const nowIdx = this.timelineData.reduce((best, time, i) => {
|
|
const d = Math.abs(new Date(time).getTime() - now)
|
|
const bestD = Math.abs(new Date(this.timelineData[best]).getTime() - now)
|
|
return d < bestD ? i : best
|
|
}, 0)
|
|
this.selectTimelineTime(this.timelineData[nowIdx])
|
|
}
|
|
} as unknown as WeatherMapHook
|