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58fb07b e84d03c 58fb07b e84d03c 58fb07b | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 | <script lang="ts">
import { onMount } from 'svelte';
import { POSITRON_NO_LABELS } from '$lib/components/map/baseStyle';
import 'maplibre-gl/dist/maplibre-gl.css';
/** Tiny MapLibre instance for the landing-page "What you'll get back"
* preview. Stays inside the 6:5 container of the third pane; no nav
* controls, no scale, no popups — just the basemap, a small AE-zone
* polygon, an HWM contour, a few 311 dots, a FloodNet pin, and the
* queried-address pin. Centered on 80 Pioneer Street, Red Hook. */
// 80 Pioneer Street, Red Hook, Brooklyn — same anchor the briefing
// and sample fixture use. Zoom 15 keeps a few blocks in frame.
const ADDR: [number, number] = [-74.0096, 40.6776];
let container: HTMLDivElement | null = $state(null);
// The `map` ref is captured outside the async loader so the synchronous
// teardown returned from onMount() can dispose of it. onMount() doesn't
// accept a teardown returned from an async callback in Svelte 5, so we
// bridge through a mutable closure variable.
type Map = import('maplibre-gl').Map;
let map: Map | null = null;
onMount(() => {
let cancelled = false;
(async () => {
if (!container || cancelled) return;
const maplibre = await import('maplibre-gl');
if (cancelled || !container) return;
map = new maplibre.Map({
container,
style: POSITRON_NO_LABELS,
center: ADDR,
zoom: 14.5,
interactive: false,
attributionControl: false,
});
map.on('load', () => {
if (!map) return;
// Coastline FEMA AE-style polygon — a few blocks centered on the
// address. Modeled-tier translucent fill + dashed line.
map.addSource('fema-ae', {
type: 'geojson',
data: {
type: 'FeatureCollection',
features: [{
type: 'Feature', properties: {},
geometry: {
type: 'Polygon',
coordinates: [[
[-74.0140, 40.6790],
[-74.0070, 40.6800],
[-74.0050, 40.6770],
[-74.0090, 40.6755],
[-74.0140, 40.6790],
]],
},
}],
},
});
map.addLayer({
id: 'fema-ae-fill', type: 'fill', source: 'fema-ae',
paint: { 'fill-color': '#2A6FA8', 'fill-opacity': 0.22 },
});
map.addLayer({
id: 'fema-ae-line', type: 'line', source: 'fema-ae',
paint: { 'line-color': '#2A6FA8', 'line-width': 1, 'line-dasharray': [3, 2] },
});
// Empirical HWM contour — short curve north of the address.
map.addSource('hwm-contour', {
type: 'geojson',
data: {
type: 'Feature', properties: {},
geometry: {
type: 'LineString',
coordinates: [
[-74.0125, 40.6790],
[-74.0105, 40.6792],
[-74.0080, 40.6790],
[-74.0060, 40.6786],
],
},
},
});
map.addLayer({
id: 'hwm-contour-line', type: 'line', source: 'hwm-contour',
paint: { 'line-color': '#0B5394', 'line-width': 1.4 },
});
// 311 cluster — three open circles south-west of the pin.
map.addSource('proxy-311', {
type: 'geojson',
data: {
type: 'FeatureCollection',
features: [
[-74.0118, 40.6770], [-74.0114, 40.6767], [-74.0121, 40.6772],
].map((c) => ({
type: 'Feature', properties: {},
geometry: { type: 'Point', coordinates: c },
})),
},
});
map.addLayer({
id: 'proxy-311-circle', type: 'circle', source: 'proxy-311',
paint: {
'circle-radius': 3,
'circle-color': 'transparent',
'circle-stroke-color': '#6B6B6B',
'circle-stroke-width': 1,
},
});
// Empirical FloodNet sensor — a small filled square (rendered as
// a circle since maplibre-gl doesn't draw squares natively; the
// landing's tier legend covers the symbology distinction).
map.addSource('floodnet', {
type: 'geojson',
data: {
type: 'Feature', properties: {},
geometry: { type: 'Point', coordinates: [-74.0103, 40.6788] },
},
});
map.addLayer({
id: 'floodnet-pin', type: 'circle', source: 'floodnet',
paint: {
'circle-radius': 4,
'circle-color': '#0B5394',
'circle-stroke-color': '#FFFFFF',
'circle-stroke-width': 1,
},
});
// Queried address pin — concentric circles, paper-on-ink.
map.addSource('addr', {
type: 'geojson',
data: {
type: 'Feature', properties: {},
geometry: { type: 'Point', coordinates: ADDR },
},
});
map.addLayer({
id: 'addr-ring', type: 'circle', source: 'addr',
paint: {
'circle-radius': 9,
'circle-color': 'transparent',
'circle-stroke-color': '#0F172A',
'circle-stroke-width': 1.4,
},
});
map.addLayer({
id: 'addr-dot', type: 'circle', source: 'addr',
paint: { 'circle-radius': 3, 'circle-color': '#0F172A' },
});
});
})();
return () => {
cancelled = true;
if (map) {
map.remove();
map = null;
}
};
});
</script>
<div class="land-mapmini" role="img" aria-label="Live mini-map preview of Red Hook flood exposure layers">
<div bind:this={container} class="land-mapmini-canvas"></div>
<div class="land-mapmini-legend">
<span><span class="lm-sw lm-sw-emp"></span>empirical</span>
<span><span class="lm-sw lm-sw-mod"></span>modeled</span>
<span><span class="lm-sw lm-sw-prx"></span>proxy</span>
</div>
</div>
<style>
.land-mapmini {
position: relative;
aspect-ratio: 6 / 5;
border: 1px solid var(--rule-soft);
overflow: hidden;
background: var(--paper-deep);
}
.land-mapmini-canvas {
position: absolute;
inset: 0;
}
.land-mapmini-legend {
position: absolute;
left: 6px;
bottom: 6px;
right: 6px;
display: flex;
gap: 10px;
padding: 4px 6px;
background: rgba(255, 255, 255, 0.92);
font-family: var(--font-mono);
font-size: 9.5px;
letter-spacing: 0.04em;
color: var(--ink-secondary);
z-index: 1;
pointer-events: none;
}
.land-mapmini-legend span {
display: inline-flex;
align-items: center;
gap: 4px;
}
.lm-sw { display: inline-block; width: 8px; height: 8px; }
.lm-sw-emp { background: var(--tier-empirical); }
.lm-sw-mod {
background: rgba(42, 111, 168, 0.4);
border: 1px dashed var(--tier-modeled);
}
.lm-sw-prx {
background: transparent;
border: 1px solid #6B6B6B;
border-radius: 50%;
}
</style>
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