correct spots

src/lib/components/appwrite-network/utils/projections.ts

@@ -0,0 +1,48 @@
+import { MAP_BOUNDS } from '../map.svelte';
+
+type Coordinates = {
+    latitude: number;
+    longitude: number;
+};
+
+type PixelPosition = {
+    x: number;
+    y: number;
+};
+
+export const latLongToSvgPosition = ({
+    latitude,
+    longitude,
+    width,
+    height
+}: Coordinates & { width: number; height: number }) => {
+    let adjustedLong = longitude;
+    if (longitude < MAP_BOUNDS.west) {
+        adjustedLong += 360;
+    } else if (longitude > MAP_BOUNDS.east) {
+        adjustedLong -= 360;
+    }
+
+    const x = ((adjustedLong - MAP_BOUNDS.west) / (MAP_BOUNDS.east - MAP_BOUNDS.west)) * width;
+    const latRatio = (MAP_BOUNDS.north - latitude) / (MAP_BOUNDS.north - MAP_BOUNDS.south);
+
+    const adjustedLatRatio = Math.pow(latRatio, 0.95) * 0.96 + latRatio * 0.04;
+    const y = adjustedLatRatio * height;
+
+    return { x, y };
+};
+
+export const svgPositionToLatLong = ({
+    width,
+    height,
+    ...position
+}: PixelPosition & { width: number; height: number }) => {
+    const longitude = MAP_BOUNDS.west + (position.x / width) * (MAP_BOUNDS.east - MAP_BOUNDS.west);
+    const normalizedY = position.y / height;
+    const latRatio =
+        normalizedY > 0.5 ? normalizedY * 1.02 - 0.01 : Math.pow(normalizedY / 0.96, 1 / 0.95);
+
+    const latitude = MAP_BOUNDS.north - latRatio * (MAP_BOUNDS.north - MAP_BOUNDS.south);
+
+    return { latitude, longitude };
+};