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nodes_cityjson.cpp
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nodes_cityjson.cpp
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// This file is part of gfp-basic3d
// Copyright (C) 2018-2022 Ravi Peters
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "nodes.hpp"
#include <ctime>
#include <geoflow/common.hpp>
#include <geoflow/geoflow.hpp>
#include <regex>
#include <nlohmann/json.hpp>
#include <string>
namespace geoflow::nodes::basic3d
{
static std::unordered_map <std::string, int> st_map =
{
{"GroundSurface", 0},
{"RoofSurface",1},
{"WallSurface", 2},
{"ClosureSurface", 3},
{"OuterCeilingSurface", 4},
{"OuterFloorSurface", 5},
{"Window", 6},
{"Door", 7}
};
void CityJSONReaderNode::process() {
// get filepath from paramter
// read json file from disk
std::ifstream inputStream(filepath_);
nlohmann::json json;
try {
inputStream >> json;
} catch (const std::exception& e) {
throw(gfIOError(e.what()));
}
// extract geometries
// WARNING: this is code is only written to work with the dataset 'DenHaag_01.json', expect crashes with other files
std::vector<std::vector<double>> verts = json["vertices"];
std::vector<double> scale = json["transform"]["scale"];
auto& faces = vector_output("faces");
auto& surface_types = vector_output("surface_types");
for (const auto& cobject : json["CityObjects"]) {
// iterate all geometries
for (const auto& geom : cobject["geometry"]) {
if (
geom["type"] == "Solid" && // only care about solids
geom["lod"] == extract_lod_ // of this LoD
) {
size_t face_cnt = 0;
// get faces of exterior shell
for (const auto& ext_face : geom["boundaries"][0]) {
LinearRing ring;
for (const auto& i : ext_face[0]) { // get vertices of outer rings
ring.push_back({
float(verts[i][0] * scale[0]),
float(verts[i][1] * scale[1]),
float(verts[i][2] * scale[2])
});
// get the surface type
}
int value = geom["semantics"]["values"][0][face_cnt++];
const std::string type_string = geom["semantics"]["surfaces"][value]["type"];
surface_types.push_back(st_map[type_string]);
faces.push_back(ring);
}
}
}
}
}
template<typename T> void add_vertices_ring(std::map<arr3d, size_t>& vertex_map, std::vector<arr3d>& vertex_vec, std::set<arr3d>& vertex_set, const T& ring, NodeManager& manager, Box& bbox) {
size_t v_cntr = vertex_vec.size();
for (auto &vertex_ : ring)
{
auto vertex = manager.coord_transform_rev(vertex_);
bbox.add(vertex);
auto [it, did_insert] = vertex_set.insert(vertex);
if (did_insert)
{
vertex_map[vertex] = v_cntr++;
vertex_vec.push_back(vertex);
}
}
}
Box add_vertices_polygon(std::map<arr3d, size_t>& vertex_map, std::vector<arr3d>& vertex_vec, std::set<arr3d>& vertex_set, const LinearRing& polygon, NodeManager& manager) {
Box bbox;
add_vertices_ring(vertex_map, vertex_vec, vertex_set, polygon, manager, bbox);
for (auto &iring : polygon.interior_rings()) {
add_vertices_ring(vertex_map, vertex_vec, vertex_set, iring, manager, bbox);
}
return bbox;
}
Box add_vertices_mesh(std::map<arr3d, size_t>& vertex_map, std::vector<arr3d>& vertex_vec, std::set<arr3d>& vertex_set, const Mesh& mesh, NodeManager& manager) {
Box bbox;
for (auto &face : mesh.get_polygons())
{
bbox.add( add_vertices_polygon(vertex_map, vertex_vec, vertex_set, face, manager) );
}
return bbox;
}
// Helper functions for processing CityJSON data
class CityJSON{
public:
static std::vector<std::vector<size_t>> LinearRing2jboundary(std::map<arr3d, size_t>& vertex_map, const LinearRing& face, NodeManager& manager);
static nlohmann::json::object_t mesh2jSolid(const Mesh& mesh, const char* lod, std::map<arr3d, size_t>& vertex_map, NodeManager& manager);
static void write_cityobjects(gfSingleFeatureInputTerminal& footprints,
gfSingleFeatureInputTerminal& multisolids_lod12,
gfSingleFeatureInputTerminal& multisolids_lod13,
gfSingleFeatureInputTerminal& multisolids_lod22,
gfMultiFeatureInputTerminal& attributes,
gfMultiFeatureInputTerminal& part_attributes,
json& outputJSON,
std::vector<arr3d>& vertex_vec,
std::string& identifier_attribute,
StrMap& output_attribute_names,
bool& only_output_renamed,
NodeManager& node_manager);
static void write_to_file(const json& outputJSON, fs::path& fname, bool prettyPrint_);
static nlohmann::json::array_t compute_geographical_extent(Box& bbox, NodeManager& manager);
};
std::vector<std::vector<size_t>> CityJSON::LinearRing2jboundary(std::map<arr3d, size_t>& vertex_map, const LinearRing& face, NodeManager& manager) {
std::vector<std::vector<size_t>> jface;
std::vector<size_t> exterior_ring;
for (auto &vertex_ : face) {
auto vertex = manager.coord_transform_rev(vertex_);
exterior_ring.push_back(vertex_map[vertex]);
}
jface.emplace_back(std::move(exterior_ring));
for (auto &iring : face.interior_rings()) {
std::vector<size_t> interior_ring;
for (auto &vertex_ : iring) {
auto vertex = manager.coord_transform_rev(vertex_);
interior_ring.push_back(vertex_map[vertex]);
}
jface.emplace_back(std::move(interior_ring));
}
return jface;
}
nlohmann::json::object_t CityJSON::mesh2jSolid(const Mesh& mesh, const char* lod, std::map<arr3d, size_t>& vertex_map, NodeManager& manager) {
auto geometry = nlohmann::json::object();
geometry["type"] = "Solid";
geometry["lod"] = lod;
std::vector<std::vector<std::vector<size_t>>> exterior_shell;
for (auto &face : mesh.get_polygons())
{
exterior_shell.emplace_back( LinearRing2jboundary(vertex_map, face, manager) );
}
geometry["boundaries"] = {exterior_shell};
auto surfaces = nlohmann::json::array();
surfaces.push_back(nlohmann::json::object({{
"type", "GroundSurface"
}}));
surfaces.push_back(nlohmann::json::object({{
"type", "RoofSurface"
}}));
surfaces.push_back(nlohmann::json::object({
{
"type", "WallSurface"
},
{
"on_footprint_edge", true
}
}));
surfaces.push_back(nlohmann::json::object({
{
"type", "WallSurface"
},
{
"on_footprint_edge", false
}
}));
geometry["semantics"] = {
{"surfaces", surfaces},
{"values", {mesh.get_labels()}}
};
return geometry;
}
void CityJSON::write_to_file(const json& outputJSON, fs::path& fname, bool prettyPrint_)
{
fs::create_directories(fname.parent_path());
std::ofstream ofs;
ofs.open(fname);
ofs << std::fixed << std::setprecision(2);
try {
if (prettyPrint_)
ofs << outputJSON.dump(2);
else
ofs << outputJSON;
} catch (const std::exception& e) {
throw(gfIOError(e.what()));
}
}
// Computes the geographicalExtent array from a geoflow::Box and the data_offset from the NodeManager
nlohmann::json::array_t CityJSON::compute_geographical_extent(Box& bbox, NodeManager& manager) {
auto minp = bbox.min();
auto maxp = bbox.max();
return {
minp[0],
minp[1],
minp[2],
maxp[0],
maxp[1],
maxp[2]
};
}
void CityJSON::write_cityobjects(
gfSingleFeatureInputTerminal& footprints,
gfSingleFeatureInputTerminal& multisolids_lod12,
gfSingleFeatureInputTerminal& multisolids_lod13,
gfSingleFeatureInputTerminal& multisolids_lod22,
gfMultiFeatureInputTerminal& attributes,
gfMultiFeatureInputTerminal& part_attributes,
json& outputJSON,
std::vector<arr3d>& vertex_vec,
std::string& identifier_attribute,
StrMap& output_attribute_names,
bool& only_output_renamed,
NodeManager& node_manager)
{
std::map<arr3d, size_t> vertex_map;
std::set<arr3d> vertex_set;
size_t id_cntr = 0;
size_t bp_counter = 0;
// we expect at least one of the geomtry inputs is set
bool export_lod12 = multisolids_lod12.has_data();
bool export_lod13 = multisolids_lod13.has_data();
bool export_lod22 = multisolids_lod22.has_data();
size_t geometry_count = 0;
if (export_lod12)
geometry_count = multisolids_lod12.size();
else if (export_lod13)
geometry_count = multisolids_lod13.size();
else if (export_lod22)
geometry_count = multisolids_lod22.size();
typedef std::unordered_map<int, Mesh> MeshMap;
for (size_t i=0; i<geometry_count; ++i) {
auto building = nlohmann::json::object();
auto b_id = std::to_string(++id_cntr);
building["type"] = "Building";
// Building atributes
bool id_from_attr = false;
auto jattributes = nlohmann::json::object();
for (auto& term : attributes.sub_terminals()) {
auto tname = term->get_full_name();
//see if we need to rename this attribute
auto search = output_attribute_names.find(tname);
if(search != output_attribute_names.end()) {
//ignore if the new name is an empty string
if(search->second.size()!=0)
tname = search->second;
} else if (only_output_renamed) {
continue;
}
if (!term->get_data_vec()[i].has_value()) {
nlohmann::json j_null;
jattributes[tname] = j_null;
continue;
}
if (term->accepts_type(typeid(bool))) {
jattributes[tname] = term->get<const bool&>(i);
} else if (term->accepts_type(typeid(float))) {
jattributes[tname] = term->get<const float&>(i);
if (tname == identifier_attribute) {
b_id = std::to_string(term->get<const float&>(i));
}
} else if (term->accepts_type(typeid(int))) {
jattributes[tname] = term->get<const int&>(i);
if (tname == identifier_attribute) {
b_id = std::to_string(term->get<const int&>(i));
id_from_attr = true;
}
} else if (term->accepts_type(typeid(std::string))) {
jattributes[tname] = term->get<const std::string&>(i);
if (tname == identifier_attribute) {
b_id = term->get<const std::string&>(i);
id_from_attr = true;
}
// for date/time we follow https://en.wikipedia.org/wiki/ISO_8601
} else if (term->accepts_type(typeid(Date))) {
auto t = term->get<const Date&>(i);
std::string date = t.format_to_ietf();
jattributes[tname] = date;
} else if (term->accepts_type(typeid(Time))) {
auto t = term->get<const Time&>(i);
std::string time = std::to_string(t.hour) + ":" + std::to_string(t.minute) + ":" + std::to_string(t.second) + "Z";
jattributes[tname] = time;
} else if (term->accepts_type(typeid(DateTime))) {
auto t = term->get<const DateTime&>(i);
std::string datetime = t.format_to_ietf();
jattributes[tname] = datetime;
}
}
building["attributes"] = jattributes;
// footprint geometry
auto fp_geometry = nlohmann::json::object();
fp_geometry["lod"] = "0";
fp_geometry["type"] = "MultiSurface";
LinearRing footprint = footprints.get<LinearRing>(i);
add_vertices_polygon(vertex_map, vertex_vec, vertex_set, footprint, node_manager);
fp_geometry["boundaries"] = {CityJSON::LinearRing2jboundary(vertex_map, footprint, node_manager)};
building["geometry"].push_back(fp_geometry);
std::vector<std::string> buildingPartIds;
bool has_solids = false;
if (export_lod12) has_solids = multisolids_lod12.get_data_vec()[i].has_value();
if (export_lod13) has_solids = multisolids_lod13.get_data_vec()[i].has_value();
if (export_lod22) has_solids = multisolids_lod22.get_data_vec()[i].has_value();
Box building_bbox;
if (has_solids) {
MeshMap meshmap;
if (export_lod22) {
meshmap = multisolids_lod22.get<MeshMap>(i);
} else if (export_lod13) {
meshmap = multisolids_lod13.get<MeshMap>(i);
} else if (export_lod12) {
meshmap = multisolids_lod12.get<MeshMap>(i);
}
for ( const auto& [sid, solid_lodx] : meshmap ) {
auto buildingPart = nlohmann::json::object();
auto bp_id = b_id + "-" + std::to_string(sid);
buildingPartIds.push_back(bp_id);
buildingPart["type"] = "BuildingPart";
buildingPart["parents"] = {b_id};
// Use try-except here for some rare cases when the sid's between different lod's do not line up (eg for very fragmented buildings from poor dim pointcloud).
if (export_lod12) {
try {
building_bbox = add_vertices_mesh(vertex_map, vertex_vec, vertex_set, multisolids_lod12.get<MeshMap>(i).at(sid), node_manager);
buildingPart["geometry"].push_back(CityJSON::mesh2jSolid(multisolids_lod12.get<MeshMap>(i).at(sid), "1.2", vertex_map, node_manager));
} catch (const std::exception& e) {
std::cout << "skipping lod 12 building part\n";
}
}
if (export_lod13) {
try {
building_bbox = add_vertices_mesh(vertex_map, vertex_vec, vertex_set, multisolids_lod13.get<MeshMap>(i).at(sid), node_manager);
buildingPart["geometry"].push_back(CityJSON::mesh2jSolid(multisolids_lod13.get<MeshMap>(i).at(sid), "1.3", vertex_map, node_manager));
} catch (const std::exception& e) {
std::cout << "skipping lod 13 building part\n";
}
}
if (export_lod22) {
building_bbox = add_vertices_mesh(vertex_map, vertex_vec, vertex_set, multisolids_lod22.get<MeshMap>(i).at(sid), node_manager);
buildingPart["geometry"].push_back(CityJSON::mesh2jSolid(multisolids_lod22.get<MeshMap>(i).at(sid), "2.2", vertex_map, node_manager));
}
//attrubutes
auto jattributes = nlohmann::json::object();
for (auto& term : part_attributes.sub_terminals()) {
auto tname = term->get_full_name();
if (!term->get_data_vec()[i].has_value()) {
nlohmann::json j_null;
jattributes[tname] = j_null;
continue;
}
if (term->accepts_type(typeid(bool))) {
jattributes[tname] = term->get<const bool&>(bp_counter);
} else if (term->accepts_type(typeid(float))) {
jattributes[tname] = term->get<const float&>(bp_counter);
} else if (term->accepts_type(typeid(int))) {
jattributes[tname] = term->get<const int&>(bp_counter);
} else if (term->accepts_type(typeid(std::string))) {
jattributes[tname] = term->get<const std::string&>(bp_counter);
}
}
++bp_counter;
buildingPart["attributes"] = jattributes;
outputJSON["CityObjects"][bp_id] = buildingPart;
}
}
building["children"] = buildingPartIds;
building["geographicalExtent"] = CityJSON::compute_geographical_extent(building_bbox, node_manager);
outputJSON["CityObjects"][b_id] = building;
}
}
void CityJSONWriterNode::process() {
// inputs
auto& footprints = vector_input("footprints");
auto& multisolids_lod12 = vector_input("geometry_lod12");
auto& multisolids_lod13 = vector_input("geometry_lod13");
auto& multisolids_lod22 = vector_input("geometry_lod22");
auto& attributes = poly_input("attributes");
auto& part_attributes = poly_input("part_attributes");
std::string identifier_attribute =
manager.substitute_globals(identifier_attribute_);
auto CRS = manager.substitute_globals(CRS_).c_str();
manager.set_rev_crs_transform(CRS);
nlohmann::json outputJSON;
outputJSON["type"] = "CityJSON";
outputJSON["version"] = "2.0";
outputJSON["CityObjects"] = nlohmann::json::object();
std::vector<arr3d> vertex_vec;
CityJSON::write_cityobjects(footprints,
multisolids_lod12,
multisolids_lod13,
multisolids_lod22,
attributes,
part_attributes,
outputJSON,
vertex_vec,
identifier_attribute,
output_attribute_names,
only_output_renamed_,
manager);
Box bbox;
std::vector<std::array<int,3>>vertices_int;
for (auto& vertex : vertex_vec) {
bbox.add(vertex);
}
auto center = bbox.center();
for (auto& vertex : vertex_vec) {
vertices_int.push_back({
int( (vertex[0] - center[0]) * 1000 ),
int( (vertex[1] - center[1]) * 1000 ),
int( (vertex[2] - center[2]) * 1000 )
});
}
outputJSON["vertices"] = vertices_int;
outputJSON["transform"] = {
{"translate", center},
{"scale", {0.001, 0.001, 0.001}}
};
// metadata
auto metadata = nlohmann::json::object();
metadata["geographicalExtent"] = CityJSON::compute_geographical_extent(bbox, manager);
metadata["identifier"] = manager.substitute_globals(meta_identifier_);
// metadata.datasetPointOfContact - only add it if at least one of the parameters is filled
auto contact = nlohmann::json::object();
if (std::string val = manager.substitute_globals(meta_poc_contactName_); !val.empty()) { contact["contactName"] = val; }
if (std::string val = manager.substitute_globals(meta_poc_email_); !val.empty()) { contact["emailAddress"] = val; }
if (std::string val = manager.substitute_globals(meta_poc_phone_); !val.empty()) { contact["phone"] = val; }
// if (std::string val = manager.substitute_globals(meta_poc_address_); !val.empty()) { contact["address"] = val; }
if (std::string val = manager.substitute_globals(meta_poc_type_); !val.empty()) { contact["contactType"] = val; }
if (std::string val = manager.substitute_globals(meta_poc_website_); !val.empty()) { contact["website"] = val; }
metadata["pointOfContact"] = contact;
if (std::string val = manager.substitute_globals(meta_referenceDate_); !val.empty()) {
// find current date if none provided
auto t = std::time(nullptr);
auto tm = *std::localtime(&t);
std::ostringstream oss;
oss << std::put_time(&tm, "%Y-%m-%d");
meta_referenceDate_ = oss.str();
}
metadata["referenceDate"] = manager.substitute_globals(meta_referenceDate_);
metadata["referenceSystem"] = manager.substitute_globals(meta_referenceSystem_);
if(manager.has_process_crs()) {
metadata["referenceSystem"] = "https://www.opengis.net/def/crs/" +manager.get_rev_crs_id_auth_name()+ "/0/" +manager.get_rev_crs_id_code();
}
metadata["title"] = manager.substitute_globals(meta_title_);
outputJSON["metadata"] = metadata;
fs::path fname = fs::path(manager.substitute_globals(filepath_));
CityJSON::write_to_file(outputJSON, fname, prettyPrint_);
manager.clear_rev_crs_transform();
}
void CityJSONFeatureWriterNode::process() {
// inputs
auto& footprints = vector_input("footprints");
auto& multisolids_lod12 = vector_input("geometry_lod12");
auto& multisolids_lod13 = vector_input("geometry_lod13");
auto& multisolids_lod22 = vector_input("geometry_lod22");
auto& attributes = poly_input("attributes");
auto& part_attributes = poly_input("part_attributes");
std::string identifier_attribute =
manager.substitute_globals(identifier_attribute_);
manager.set_rev_crs_transform(manager.substitute_globals(CRS_).c_str());
nlohmann::json outputJSON;
outputJSON["type"] = "CityJSONFeature";
outputJSON["CityObjects"] = nlohmann::json::object();
std::vector<arr3d> vertex_vec;
CityJSON::write_cityobjects(footprints,
multisolids_lod12,
multisolids_lod13,
multisolids_lod22,
attributes,
part_attributes,
outputJSON,
vertex_vec,
identifier_attribute,
output_attribute_names,
only_output_renamed_,
manager);
// The main Building is the parent object.
// Bit of a hack. Ideally we would know exactly which ID we set,
// instead of just iterating. But it is assumed that in case of writing to
// CityJSONFeature there is only one parent CityObject.
for (auto& el : outputJSON["CityObjects"].items()) {
if (!el.value().contains(std::string("parents"))) {
outputJSON["id"] = el.key();
}
};
std::vector<std::array<int,3>>vertices_int;
double _offset_x = translate_x_;
double _offset_y = translate_y_;
double _offset_z = translate_z_;
for (auto& vertex : vertex_vec) {
vertices_int.push_back({
int( (vertex[0] - _offset_x ) / scale_x_ ),
int( (vertex[1] - _offset_y ) / scale_y_ ),
int( (vertex[2] - _offset_z ) / scale_z_ )
});
}
outputJSON["vertices"] = vertices_int;
fs::path fname = fs::path(manager.substitute_globals(filepath_));
CityJSON::write_to_file(outputJSON, fname, prettyPrint_);
manager.clear_rev_crs_transform();
}
void CityJSONFeatureMetadataWriterNode::process() {
manager.set_rev_crs_transform(manager.substitute_globals(CRS_).c_str());
nlohmann::json outputJSON;
outputJSON["type"] = "CityJSON";
outputJSON["version"] = "2.0";
outputJSON["CityObjects"] = nlohmann::json::object();
outputJSON["vertices"] = nlohmann::json::array();
outputJSON["transform"] = {
{"translate", { translate_x_, translate_y_, translate_z_ }},
{"scale", { scale_x_, scale_y_, scale_z_}}
};
outputJSON["metadata"] = {
{"referenceSystem", "https://www.opengis.net/def/crs/" +manager.get_rev_crs_id_auth_name()+ "/0/" +manager.get_rev_crs_id_code() }
};
fs::path fname = fs::path(manager.substitute_globals(filepath_));
CityJSON::write_to_file(outputJSON, fname, prettyPrint_);
manager.clear_rev_crs_transform();
}
void JSONReaderNode::process() {
// read json file from disk
std::ifstream inputStream(manager.substitute_globals(filepath_));
nlohmann::json json;
try {
inputStream >> json;
inputStream.close();
} catch (const std::exception& e) {
throw(gfIOError(e.what()));
}
vector_output("json").push_back(json);
}
void offset_indices(nlohmann::json& j, const size_t& offset){
if (j.type() == nlohmann::json::value_t::number_unsigned) {
j = j.get<size_t>() + offset;
} else {
for (auto& k : j) {
offset_indices(k, offset);
}
}
}
void set_vertex_index_offset(nlohmann::json& geometry, const size_t& offset) {
// std::cout<<offset<< std::endl;
// std::cout<<geometry<< std::endl;
if(offset==0) return;
offset_indices(geometry["boundaries"], offset);
// std::cout<<geometry<< std::endl;
}
void CityJSONLinesWriterNode::process() {
auto jsonstr = input("first_line").get<std::string>();
nlohmann::json metajson;
try {
metajson = nlohmann::json::parse(jsonstr);
} catch (const std::exception& e) {
throw(gfIOError(e.what()));
}
auto& features_inp = vector_input("features");
size_t vindex_offset = 0;
for (size_t i=0; i< features_inp.size(); ++i) {
// std::cout<< "FI:" << i<< std::endl;
auto& featurestr = features_inp.get<std::string>(i);
if (featurestr.size()==0) {
std::cout << "empty feature string for feature; skipping...\n";
continue;
}
// std::cout<< featurestr << std::endl;
nlohmann::json feature;
try {
feature = nlohmann::json::parse(featurestr);
} catch (const std::exception& e) {
throw(gfIOError(e.what()));
}
if(feature["type"] != "CityJSONFeature") {
throw(gfException("input is not CityJSONFeature"));
}
for( auto [id, cobject] : feature["CityObjects"].items() ) {
// std::cout<< "CID:" << id << std::endl;
// std::cout<< "vertex_count:" << cobject[]<< std::endl;
metajson["CityObjects"][id] = cobject;
//fix vertex indices...
for (auto& geom : metajson["CityObjects"][id]["geometry"]) {
set_vertex_index_offset(geom, vindex_offset);
// std::cout<<boundaries<< std::endl;
}
}
if(optimal_lod_) {
for( auto& item : feature["CityObjects"].items() ) {
auto& cobject = metajson["CityObjects"][item.key()];
if(cobject["type"] == "BuildingPart") {
auto& ref = cobject["parents"][0];
std::string optilod = feature["CityObjects"][ ref ] ["attributes"]["optimal_lod"];
std::vector<nlohmann::json> new_geometries;
for(auto& geom : cobject["geometry"]) {
if (geom["lod"] == optilod) {
new_geometries.push_back(geom);
}
}
cobject["geometry"] = new_geometries;
}
}
}
// std::cout << json << std::endl;
metajson["vertices"].insert(metajson["vertices"].end(), feature["vertices"].begin(), feature["vertices"].end());
// std::cout << json["vertices"] << std::endl;
vindex_offset = metajson["vertices"].size();
}
// metadata
auto& s = metajson["transform"]["scale"];
auto& t = metajson["transform"]["translate"];
if(recompute_offset_) {
Box bbox;
for(auto& v : metajson["vertices"]) {
bbox.add(arr3f{
(float) v[0].get<int>() * s[0].get<float>(),
(float) v[1].get<int>() * s[1].get<float>(),
(float) v[2].get<int>() * s[2].get<float>()
});
}
auto c = bbox.center();
t[0] = t[0].get<float>() + c[0];
t[1] = t[1].get<float>() + c[1];
t[2] = t[2].get<float>() + c[2];
for(auto& v : metajson["vertices"]) {
v[0] = int( v[0].get<double>() - double(c[0]/s[0].get<double>()) );
v[1] = int( v[1].get<double>() - double(c[1]/s[1].get<double>()) );
v[2] = int( v[2].get<double>() - double(c[2]/s[2].get<double>()) );
}
}
Box bbox;
//compute extent
for(auto& v : metajson["vertices"]) {
bbox.add(arr3f{
(float) v[0].get<int>() * s[0].get<float>() + t[0].get<float>(),
(float) v[1].get<int>() * s[1].get<float>() + t[1].get<float>(),
(float) v[2].get<int>() * s[2].get<float>() + t[2].get<float>()
});
}
metajson["metadata"]["geographicalExtent"] = CityJSON::compute_geographical_extent(bbox, manager);
fs::path fname = fs::path(manager.substitute_globals(filepath_));
CityJSON::write_to_file(metajson, fname, prettyPrint_);
}
std::set<std::string> split_string(const std::string& s, std::string delimiter) {
std::set<std::string> parts;
if (s.empty()) return parts;
size_t last = 0;
size_t next = 0;
while ((next = s.find(delimiter, last)) != std::string::npos) {
parts.insert(s.substr(last, next-last));
last = next + 1;
}
parts.insert(s.substr(last));
return parts;
}
std::vector<std::string> split_string_to_vec(const std::string& s, std::string delimiter) {
std::vector<std::string> parts;
if (s.empty()) return parts;
size_t last = 0;
size_t next = 0;
while ((next = s.find(delimiter, last)) != std::string::npos) {
parts.push_back(s.substr(last, next-last));
last = next + 1;
}
parts.push_back(s.substr(last));
return parts;
}
LinearRing CityJSONSurface2LinearRing(
std::vector<std::vector<int>> face,
const std::vector<std::vector<double>>& vertices,
const std::vector<double>& jtranslate,
const std::vector<double>& jscale,
geoflow::NodeManager& manager
) {
LinearRing ring;
for (const auto& i : face[0]) { // get vertices of exterior ring (skipping holes)
ring.push_back(
manager.coord_transform_fwd(
double((vertices[i][0] * jscale[0])+jtranslate[0]),
double((vertices[i][1] * jscale[1])+jtranslate[1]),
double((vertices[i][2] * jscale[2])+jtranslate[2])
)
);
// get the surface type
}
return ring;
}
void CityJSONL2MeshNode::process() {
auto& meshes = vector_output("meshes");
auto& roofparts = vector_output("roofparts");
auto& attributes = poly_output("attributes");
auto jsonstr = input("jsonl_metadata_str").get<std::string>();
nlohmann::json metajson;
try {
metajson = nlohmann::json::parse(jsonstr);
} catch (const std::exception& e) {
throw(gfIOError(e.what()));
}
auto& features_inp = vector_input("jsonl_features_str");
std::vector<double> jtranslate = metajson["transform"]["translate"];
std::vector<double> jscale = metajson["transform"]["scale"];
std::string referenceSystem = metajson["metadata"]["referenceSystem"];
std::string epsg_code;
std::regex re("\\d+$");
std::smatch m;
std::cout<< referenceSystem << std::endl;
if(std::regex_search(referenceSystem, m, re)) {
epsg_code = "EPSG:" + m[0].str();
std::cout<< epsg_code << std::endl;
manager.set_fwd_crs_transform(epsg_code.c_str());
} else {
throw(gfException("CRS not detected"));
}
auto feature_filter = split_string(manager.substitute_globals(cotypes), ",");
for(auto& t : feature_filter) {
std::cout << "filtering: " << t << std::endl;
}
bool filter_by_ftype = feature_filter.size() != 0;
std::unordered_map<std::string, std::string> attribute_filter_map;
auto attribute_filter = split_string(manager.substitute_globals(atribute_spec), ",");
for(const auto& t : attribute_filter) {
auto nt = split_string_to_vec(t, ":");
if (nt.size()!=2) throw(gfException("Error in parsing attribute_spec string: "+manager.substitute_globals(atribute_spec)));
attribute_filter_map[nt[0]] = nt[1];
}
if (bag3d_buildings_mode_) {
auto& lod0_2d = vector_output("lod0_2d");
auto& roofparts_lr = vector_output("roofparts_lr");
auto& roofparts_lr_attributes = poly_output("roofparts_lr_attributes");
roofparts_lr_attributes.add_vector("identificatie", typeid(std::string));
roofparts_lr_attributes.add_vector("pand_deel_id", typeid(int));
roofparts_lr_attributes.add_vector("dak_deel_id", typeid(int));
auto& meshes_attributes = poly_output("meshes_attributes");
meshes_attributes.add_vector("identificatie", typeid(std::string));
meshes_attributes.add_vector("pand_deel_id", typeid(int));
for (size_t i=0; i< features_inp.size(); ++i) {
// std::cout<< "FI:" << i<< std::endl;
auto& featurestr = features_inp.get<std::string>(i);
if (featurestr.size()==0) {
std::cout << "empty feature string for feature; skipping...\n";
continue;
}
// std::cout<< featurestr << std::endl;
nlohmann::json feature;
try {
feature = nlohmann::json::parse(featurestr);
} catch (const std::exception& e) {
throw(gfIOError(e.what()));
}
if(feature["type"] != "CityJSONFeature") {
throw(gfException("input is not CityJSONFeature"));
}
std::vector<std::vector<double>> vertices = feature["vertices"];
size_t n_attr=0, n_mesh=0;
std::string optimal_lod_value = optimal_lod_value_;
for( auto [id, cobject] : feature["CityObjects"].items() ) {
// std::cout<< "CID:" << id << std::endl;
// std::cout<< "vertex_count:" << cobject[]<< std::endl;
if (cobject["type"] == "Building") {
if (optimal_lod_) optimal_lod_value = cobject["attributes"]["optimal_lod"];
size_t n_children = 1;
if (bag3d_attr_per_part_) n_children = cobject["children"].size();
n_attr += n_children;
// get_attributes
for(auto& [jname, jval] : cobject["attributes"].items()) {
if (jname == "b3_bag_bag_overlap") {
if (!attributes.has_sub_terminal(jname)) {
attributes.add_vector(jname, typeid(float));
}
for (size_t i=0; i<n_children; ++i)
if (jval.is_null())
attributes.sub_terminal(jname).push_back(float(0));
else
attributes.sub_terminal(jname).push_back(jval.get<float>());
} else if(jval.is_string()) {
if (!attributes.has_sub_terminal(jname)) {
attributes.add_vector(jname, typeid(std::string));
}
for (size_t i=0; i<n_children; ++i)
attributes.sub_terminal(jname).push_back(jval.get<std::string>());
} else if (jval.is_number()) {
if (!attributes.has_sub_terminal(jname)) {
attributes.add_vector(jname, typeid(float));
}
for (size_t i=0; i<n_children; ++i)
attributes.sub_terminal(jname).push_back(jval.get<float>());
} else if (jval.is_boolean()) {
if (!attributes.has_sub_terminal(jname)) {
attributes.add_vector(jname, typeid(bool));
}
for (size_t i=0; i<n_children; ++i)
attributes.sub_terminal(jname).push_back(jval.get<bool>());
} else {
if (!attributes.has_sub_terminal(jname)) {
attributes.add_vector(jname, typeid(std::string));
}
for (size_t i=0; i<n_children; ++i)
if(jval.is_null()) {
attributes.sub_terminal(jname).push_back_any(std::any());
} else {
attributes.sub_terminal(jname).push_back(jval.get<std::string>());
}
}
}
// get lod0 polygon
auto& geom = cobject["geometry"][0];
LinearRing ring;
if(geom["type"] == "MultiSurface" && geom["lod"] == "0") {
ring = CityJSONSurface2LinearRing( geom["boundaries"][0], vertices, jtranslate, jscale, manager );
lod0_2d.push_back(ring);
} else {
throw(gfException("Building geometry has unexpected form"));
}
}
}
for( auto [id, cobject] : feature["CityObjects"].items() ) {
// std::cout<< "CID:" << id << std::endl;
// std::cout<< "vertex_count:" << cobject[]<< std::endl;
if (cobject["type"] == "BuildingPart") {
auto id_vec = split_string_to_vec(id, "-");
std::string identificatie = id_vec[0];
int part_id = std::stoi(id_vec[1]);
bool optimal_lod_geometry_found = false;
for (const auto& geom : cobject["geometry"]) {
if(geom["lod"].get<std::string>() == optimal_lod_value) {
// get mesh
if (
geom["type"] == "Solid"// only care about solids
) {
optimal_lod_geometry_found = true;
Mesh mesh;
Mesh roofparts_;
// get faces of exterior shell
unsigned face_i=0;
int roofpart_i=0;
for (const auto& ext_face : geom["boundaries"][0]) {
LinearRing ring;
for (const auto& i : ext_face[0]) { // get vertices of outer rings
ring.push_back(
manager.coord_transform_fwd(
double((vertices[i][0] * jscale[0])+jtranslate[0]),
double((vertices[i][1] * jscale[1])+jtranslate[1]),
double((vertices[i][2] * jscale[2])+jtranslate[2])
)
);
// get the surface type
}
int sindex = geom["semantics"]["values"][0][face_i++].get<int>();
auto& stype = geom["semantics"]["surfaces"][ sindex ];
if (stype["type"].get<std::string>() == "RoofSurface") {
roofparts_.push_polygon(ring, 2);
roofparts_lr.push_back(ring);
roofparts_lr_attributes.sub_terminal("identificatie").push_back(identificatie);
roofparts_lr_attributes.sub_terminal("pand_deel_id").push_back(part_id);
roofparts_lr_attributes.sub_terminal("dak_deel_id").push_back(roofpart_i++);
}
mesh.push_polygon(ring, st_map[stype["type"].get<std::string>()]);
}
roofparts.push_back(roofparts_);
meshes.push_back(mesh);
meshes_attributes.sub_terminal("identificatie").push_back(identificatie);
meshes_attributes.sub_terminal("pand_deel_id").push_back(part_id);
n_mesh++;
}
}
}
//
if (!optimal_lod_geometry_found) {
meshes.push_back(Mesh());
meshes_attributes.sub_terminal("identificatie").push_back(identificatie);
meshes_attributes.sub_terminal("pand_deel_id").push_back(part_id);
}
}
}
if(n_attr!=n_mesh) {
std::cout << "Pushing attr n=" <<n_attr<<" and mesh n=" <<n_mesh <<std::endl;
std::cout << featurestr << std::endl;
}
}
} else { // not 3dbag_buildings_mode
// create attributes from attribute_spec
for(auto& [name,type] : attribute_filter_map) {
if(type=="float")
attributes.add_vector(name, typeid(float));
else if(type=="string")