feat: fix gps map projection and update map config

miniprogram/utils/projection.ts

@@ -13,6 +13,13 @@ export interface WorldTilePoint {
   y: number
 }
 
+export interface MapCalibration {
+  offsetEastMeters: number
+  offsetNorthMeters: number
+  rotationDeg: number
+  scale: number
+}
+
 const MAX_LATITUDE = 85.05112878
 const EARTH_RADIUS = 6378137
 
@@ -60,6 +67,43 @@ export function worldTileToLonLat(point: WorldTilePoint, zoom: number): LonLatPo
   }
 }
 
+export function applyMapCalibration(point: LonLatPoint, calibration: MapCalibration, origin: LonLatPoint): LonLatPoint {
+  const scale = calibration.scale || 1
+  const rotationDeg = calibration.rotationDeg || 0
+  const offsetEastMeters = calibration.offsetEastMeters || 0
+  const offsetNorthMeters = calibration.offsetNorthMeters || 0
+
+  if (
+    Math.abs(scale - 1) < 0.000001
+    && Math.abs(rotationDeg) < 0.000001
+    && Math.abs(offsetEastMeters) < 0.000001
+    && Math.abs(offsetNorthMeters) < 0.000001
+  ) {
+    return point
+  }
+
+  const originMercator = lonLatToWebMercator(origin)
+  const pointMercator = lonLatToWebMercator(point)
+  const deltaX = pointMercator.x - originMercator.x
+  const deltaY = pointMercator.y - originMercator.y
+  const scaledX = deltaX * scale
+  const scaledY = deltaY * scale
+  const rotationRad = rotationDeg * Math.PI / 180
+  const cos = Math.cos(rotationRad)
+  const sin = Math.sin(rotationRad)
+
+  const calibratedMercator: WebMercatorPoint = {
+    x: originMercator.x + scaledX * cos - scaledY * sin + offsetEastMeters,
+    y: originMercator.y + scaledX * sin + scaledY * cos + offsetNorthMeters,
+  }
+
+  return webMercatorToLonLat(calibratedMercator)
+}
+
+export function calibratedLonLatToWorldTile(point: LonLatPoint, zoom: number, calibration: MapCalibration, origin: LonLatPoint): WorldTilePoint {
+  return lonLatToWorldTile(applyMapCalibration(point, calibration, origin), zoom)
+}
+
 const CHINA_AXIS = 6378245
 const CHINA_EE = 0.00669342162296594323