Function coordinatesToTilePoint

src/engine/plugins/tile.cpp:204–221

* Converts lon/lat into coordinates inside a Mercator projection tile (x/y pixel values) * * @param point the lon/lat you want the tile coords for * @param tile_bbox the mercator boundaries of the tile * @return a point (x,y) on the tile defined by tile_bbox */

 * @return a point (x,y) on the tile defined by tile_bbox
 */
FixedPoint coordinatesToTilePoint(const util::Coordinate point, const BBox &tile_bbox)
{
    const FloatPoint geo_point{static_cast<double>(util::toFloating(point.lon)),
                               static_cast<double>(util::toFloating(point.lat))};

    const double px_merc = geo_point.x * util::web_mercator::DEGREE_TO_PX;
    const double py_merc = util::web_mercator::latToY(util::FloatLatitude{geo_point.y}) *
                           util::web_mercator::DEGREE_TO_PX;

    const auto px = static_cast<std::int32_t>(std::round(
        ((px_merc - tile_bbox.minx) * util::web_mercator::TILE_SIZE / tile_bbox.width()) *
        util::vector_tile::EXTENT / util::web_mercator::TILE_SIZE));
    const auto py = static_cast<std::int32_t>(std::round(
        ((tile_bbox.maxy - py_merc) * util::web_mercator::TILE_SIZE / tile_bbox.height()) *
        util::vector_tile::EXTENT / util::web_mercator::TILE_SIZE));

    return FixedPoint{px, py};
}

std::vector<RTreeLeaf> getEdges(const DataFacadeBase &facade, unsigned x, unsigned y, unsigned z)
{