std::vector<UnwrappedTileID> tileCover(const TransformState& state, int32_t z) {
assert(state.valid());
const double w = state.getSize().width;
const double h = state.getSize().height;
return tileCover(
TileCoordinate::fromScreenCoordinate(state, z, { 0, 0 }).p,
TileCoordinate::fromScreenCoordinate(state, z, { w, 0 }).p,
TileCoordinate::fromScreenCoordinate(state, z, { w, h }).p,
TileCoordinate::fromScreenCoordinate(state, z, { 0, h }).p,
TileCoordinate::fromScreenCoordinate(state, z, { w/2, h/2 }).p,
z);
}
std::vector<UnwrappedTileID> tileCover(const LatLngBounds& bounds_, int32_t z) {
if (bounds_.isEmpty() ||
bounds_.south() > util::LATITUDE_MAX ||
bounds_.north() < -util::LATITUDE_MAX) {
return {};
}
LatLngBounds bounds = LatLngBounds::hull(
{ std::max(bounds_.south(), -util::LATITUDE_MAX), bounds_.west() },
{ std::min(bounds_.north(), util::LATITUDE_MAX), bounds_.east() });
return tileCover(
Projection::project(bounds.northwest(), z),
Projection::project(bounds.northeast(), z),
Projection::project(bounds.southeast(), z),
Projection::project(bounds.southwest(), z),
Projection::project(bounds.center(), z),
z);
}
std::vector<UnwrappedTileID> tileCover(const LatLngBounds& bounds_, int32_t z) {
if (bounds_.isEmpty() ||
bounds_.south() > util::LATITUDE_MAX ||
bounds_.north() < -util::LATITUDE_MAX) {
return {};
}
LatLngBounds bounds = LatLngBounds::hull(
{ std::max(bounds_.south(), -util::LATITUDE_MAX), bounds_.west() },
{ std::min(bounds_.north(), util::LATITUDE_MAX), bounds_.east() });
const TransformState state;
return tileCover(
TileCoordinate::fromLatLng(state, z, bounds.northwest()).p,
TileCoordinate::fromLatLng(state, z, bounds.northeast()).p,
TileCoordinate::fromLatLng(state, z, bounds.southeast()).p,
TileCoordinate::fromLatLng(state, z, bounds.southwest()).p,
TileCoordinate::fromLatLng(state, z, bounds.center()).p,
z);
}
