/// Converts quadkey to bounding box
static BoundingBox quadKeyToBoundingBox(const QuadKey &quadKey) {
GeoCoordinate minPoint, maxPoint;
int levelOfDetail = quadKey.levelOfDetail;
minPoint.latitude = tileYToLat(quadKey.tileY + 1, levelOfDetail);
maxPoint.latitude = tileYToLat(quadKey.tileY, levelOfDetail);
minPoint.longitude = tileXToLon(quadKey.tileX, levelOfDetail);
maxPoint.longitude = tileXToLon(quadKey.tileX + 1, levelOfDetail);
return BoundingBox(minPoint, maxPoint);
}
void OSMTileLayer::RefreshTiles()
{
if (tileServer && renderSurface && camera && fort14)
{
int newZoom = CalculateZoomLevel(surfaceDimension, 1.2);
if (newZoom != zoom)
{
renderSurface->ClearTextures();
}
zoom = newZoom;
// Convert screen coordinates to normalized coordinates
float normX, normY;
camera->GetUnprojectedPoint(0, 0, &normX, &normY);
// Convert normalized coordiantes to lat/long
float geoX = fort14->GetUnprojectedX(normX);
float geoY = fort14->GetUnprojectedY(normY);
// Get the x, y tile coordinates
int newX = lonToTileX(geoX, zoom);
int newY = latToTileY(geoY, zoom);
if (newX != x || newY != y)
{
// Convert tile coordinates to lat/long
float geoXnew = tileXToLon(newX, zoom);
float geoYnew = tileYToLat(newY, zoom);
float geoXnewNext = tileXToLon(newX + 1, zoom);
float geoYnewNext = tileYToLat(newY + 1, zoom);
// Convert lat/long to normalized coordinates
float normXnew = fort14->GetNormalizedX(geoXnew);
float normYnew = fort14->GetNormalizedY(geoYnew);
float normXnewNext = fort14->GetNormalizedX(geoXnewNext);
float normYnewNext = fort14->GetNormalizedY(geoYnewNext);
// Calculate the width and height
float width = normXnewNext - normXnew;
float height = normYnewNext - normYnew;
renderSurface->UpdateSurfacePosition(normXnew, normYnew, width, height);
// std::cout << "Old Coords: (" << x << ", " << y << ")\t" <<
// "New Coords: (" << newX << ", " << newY << ")" << std::endl;
x = newX;
y = newY;
}
if (currentType == SatelliteMap)
tileServer->setBoundingBox(SatelliteTile, x, y, zoom);
else if (currentType == StreetMap)
tileServer->setBoundingBox(StreetTile, x, y, zoom);
else if (currentType == TerrainMap)
tileServer->setBoundingBox(TerrainTile, x, y, zoom);
}
}
