firefront/src/StringRepresentation.cpp at master · OroraTech/firefront · GitHub

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/**

* @file StringRepresentation.cpp

* @brief TODO: add a brief description.

* @license This program is free software; See LICENSE file for details. (See LICENSE file).

* @author Jean‑Baptiste Filippi — 2025

#include "StringRepresentation.h"

#include <iomanip>

#include <limits>

#include <fstream>

#include <sstream>

#include <iostream>

#include <vector>

#include <algorithm>

#define GEOJSON_MODE 2

#define JSON_MODE 1

#define FF_MODE 0

#define KML_MODE 3

using namespace std;

namespace libforefire {

// static variables initialization

size_t StringRepresentation::currentLevel = 0;

ostringstream StringRepresentation::outputstr("");

bool writedOnce = false;

string outPattern;

FireDomain* domain = 0;

// --- GEOJSON Aggregation Variables ---

// For GEOJSON mode we aggregate rings per top-level front.

// Each top-level feature (currentLevel==1) will be represented as a vector of rings,

// where each ring is a vector of coordinate strings.

static bool firstGeoFeature = true; // used when outputting the feature list

static std::vector< std::vector<std::string> > geojson_current_feature;

StringRepresentation::StringRepresentation(FireDomain* fdom) : Visitor() {

lastLevel = -1;

domain = fdom;

outPattern = SimulationParameters::GetInstance()->getParameter("ffOutputsPattern");

setTime(domain->getTime());

updateStep = SimulationParameters::GetInstance()->getDouble("outputsUpdate");

setUpdateTime(domain->getTime());

dumpMode = FF_MODE; // default; will be set by dumpStringRepresentation()

}

StringRepresentation::~StringRepresentation() { }

void StringRepresentation::input() { }

void StringRepresentation::setOutPattern(string s) {

outPattern = s;

}

void StringRepresentation::update() {

setTime(getUpdateTime());

}

void StringRepresentation::timeAdvance() {

if ( updateStep < EPSILONT ) {

setUpdateTime(numeric_limits<double>::infinity());

} else {

setUpdateTime(getTime() + updateStep);

}

void StringRepresentation::output() {

if (writedOnce && (domain->getNumFF() == 0))

return;

writedOnce = true;

ostringstream oss;

oss << outPattern << "." << getTime();

ofstream outputfile(oss.str().c_str());

if (outputfile) {

outputfile << dumpStringRepresentation();

} else {

cout << "could not open file " << oss.str() << " for writing domain file " << endl;

}

// Visitor methods

// Visit the domain: outputs the header and resets GEOJSON flags.

void StringRepresentation::visit(FireDomain* fd) {

SimulationParameters *simParam = SimulationParameters::GetInstance();

if (dumpMode == JSON_MODE) {

outputstr << '{' << endl << "\t\"fronts\": [";

lastLevel = 0;

}

else if (dumpMode == GEOJSON_MODE) {

firstGeoFeature = true; // reset before outputting features

double t = simParam->getInt("refTime") + fd->getSimulationTime();

int d = simParam->getInt("refDay");

int y = simParam->getInt("refYear");

outputstr << "{" << endl;

outputstr << "\t\"type\": \"FeatureCollection\"," << endl;

outputstr << "\t\"valid_at\": \""<< SimulationParameters::FormatISODate(t, y, d) << "\"," << endl;

outputstr << "\t\"features\": [" << endl;

}

else if (dumpMode == KML_MODE) {

outputstr << "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" << endl;

outputstr << "<kml xmlns=\"http://www.opengis.net/kml/2.2\" "

<< "xmlns:gx=\"http://www.google.com/kml/ext/2.2\" "

<< "xmlns:kml=\"http://www.opengis.net/kml/2.2\" "

<< "xmlns:atom=\"http://www.w3.org/2005/Atom\">" << endl;

outputstr << "<Document>" << endl;

}

else if (dumpMode == FF_MODE) {

outputstr << fd->toString() << endl;

}

// Visit a fire front.

void StringRepresentation::visit(FireFront* ff) {

if (dumpMode == FF_MODE) {

for (size_t k = 0; k < currentLevel; k++)

outputstr << " ";

outputstr << ff->toString() << endl;

return;

}

else if (dumpMode == JSON_MODE) {

// (JSON mode unchanged)

SimulationParameters *simParam = SimulationParameters::GetInstance();

if (ff->getDomain()->getSimulationTime() >= ff->getTime()) {

if (lastLevel >= 2)

outputstr << '"';

if (lastLevel >= 1)

outputstr << endl << "\t" << "},";

double t = simParam->getInt("refTime") + ff->getDomain()->getSimulationTime();

int d = simParam->getInt("refDay");

int y = simParam->getInt("refYear");

outputstr.precision(3);

outputstr << endl << "\t{" << endl;

outputstr << "\t\t\"area\": \"" << fixed << (ff->getArea() / 10000.0) << "ha\"," << endl;

outputstr << "\t\t\"date\": \"" << SimulationParameters::FormatISODate(t, y, d) << "\"," << endl;

outputstr << "\t\t\"projection\": \""

<< SimulationParameters::GetInstance()->getParameter("projection") << "\"," << endl;

outputstr << "\t\t\"coordinates\": \"";

lastLevel = 1;

}

else if (dumpMode == GEOJSON_MODE) {

// In GEOJSON mode we aggregate rings from nodes.

// For a top–level fire front (currentLevel==1), clear any previous data and start a new feature.

if (currentLevel == 1) {

geojson_current_feature.clear();

geojson_current_feature.push_back(std::vector<std::string>()); // main (outer) ring

}

else if (currentLevel == 2) {

// For an inner boundary (hole), add a new ring.

geojson_current_feature.push_back(std::vector<std::string>());

}

// (No immediate output; nodes will be collected.)

}

else if (dumpMode == KML_MODE) {

// KML mode unchanged from your adjustments.

if (currentLevel == 1) {

outputstr << "<Placemark>" << endl;

outputstr << "<Style>" << endl;

outputstr << " <LineStyle>" << endl;

outputstr << " <color>ff0000ff</color>" << endl;

outputstr << " <width>2</width>" << endl;

outputstr << "</LineStyle>" << endl;

outputstr << "<PolyStyle>" << endl;

outputstr << " <color>22000000</color>" << endl;

outputstr << "</PolyStyle>" << endl;

outputstr << "</Style>" << endl;

}

if (currentLevel % 2 == 1) { // For top-level front (outer boundary)

outputstr << "<Polygon>" << endl;

outputstr << " <outerBoundaryIs>" << endl;

outputstr << " <LinearRing>" << endl;

outputstr << " <coordinates>" << endl;

} else { // For inner boundaries

outputstr << "<innerBoundaryIs>" << endl;

outputstr << " <LinearRing>" << endl;

outputstr << " <coordinates>" << endl;

}

// Visit a fire node. In GEOJSON mode, add its coordinate to the current ring.

void StringRepresentation::visit(FireNode* fn) {

if (dumpMode == JSON_MODE) {

if (fn->getFront()->getDomain()->getSimulationTime() >= fn->getFront()->getTime()) {

if (lastLevel == 2)

outputstr << ' ';

outputstr.precision(3);

outputstr << fixed << fn->getX() << ',' << fn->getY() << ',' << fn->getSpeed();

lastLevel = 2;

}

return;

}

if (dumpMode == FF_MODE) {

for (size_t k = 0; k < currentLevel; k++)

outputstr << " ";

outputstr << fn->toString() << endl;

return;

}

if (dumpMode == GEOJSON_MODE) {

if (fn->getFront()->getDomain()->getSimulationTime() >= fn->getFront()->getTime()) {

ostringstream coord;

// std::cout<<domain->getRefLongitude()<<" "<< domain->getMetersPerDegreesLon()<<std::endl;

coord << "["

<< fixed << setprecision(5)

<< fn->getLoc().projectLon(domain->getRefLongitude(), domain->getMetersPerDegreesLon()) << ", "

<< fn->getLoc().projectLat(domain->getRefLatitude(), domain->getMetersPerDegreeLat())

<< ", 0]";

if (!geojson_current_feature.empty()) {

// Append coordinate to the current (last) ring.

geojson_current_feature.back().push_back(coord.str());

}

return;

}

if (dumpMode == KML_MODE) {

if (fn->getFront()->getDomain()->getSimulationTime() >= fn->getFront()->getTime()) {

outputstr.precision(5);

outputstr << fixed

<< fn->getLoc().projectLon(domain->getRefLongitude(), domain->getMetersPerDegreesLon()) << ","

<< fn->getLoc().projectLat(domain->getRefLatitude(), domain->getMetersPerDegreeLat())

<< ",0 ";

}

return;

}

// postVisitInner: called after a FireFront's nodes but before processing its internals.

// For GEOJSON mode, reverse the current ring to mimic the Python [::-1] behavior.

void StringRepresentation::postVisitInner(FireFront* ff) {

if (dumpMode == JSON_MODE) {

// outputstr << "\"" << endl << "\t}";

}

else if (dumpMode == GEOJSON_MODE) {

if (!geojson_current_feature.empty() && !geojson_current_feature.back().empty()) {

std::reverse(geojson_current_feature.back().begin(), geojson_current_feature.back().end());

}

else if (dumpMode == KML_MODE) {

if (currentLevel % 2 == 1) { // outer boundary

outputstr << endl << " </coordinates>" << endl;

outputstr << " </LinearRing>" << endl;

outputstr << " </outerBoundaryIs>" << endl;

} else { // inner boundary

outputstr << endl << " </coordinates>" << endl;

outputstr << " </LinearRing>" << endl;

outputstr << " </innerBoundaryIs>" << endl;

}

// postVisitAll: called at the very end after processing internals.

// For GEOJSON mode, if finishing a top–level FireFront (currentLevel==1), build and output its Feature.

void StringRepresentation::postVisitAll(FireFront* ff) {

if (dumpMode == JSON_MODE) {

// (JSON mode unchanged)

}

else if (dumpMode == GEOJSON_MODE) {

if (currentLevel == 1) {

// Build the GeoJSON Feature from geojson_current_feature.

ostringstream feature;

feature << "\t{" << "\n";

feature << "\t\t\"type\": \"Feature\",\n";

feature << "\t\t\"properties\": { \"numberOfPolygons\": " << geojson_current_feature.size() << " },\n";

feature << "\t\t\"geometry\": {\n";

feature << "\t\t\t\"type\": \"MultiPolygon\",\n";

feature << "\t\t\t\"coordinates\": [ [ ";

bool firstRing = true;

for (const auto &ring : geojson_current_feature) {

if (!firstRing)

feature << ", ";

firstRing = false;

feature << "[";

bool firstCoord = true;

std::string firstCoordinate;

for (const auto &coord : ring) {

if (firstCoord) {

firstCoordinate = coord; // Store the very first coordinate.

firstCoord = false;

} else {

feature << ", "; // Add comma *before* subsequent coordinates

}

feature << coord;

}

// Close the ring by adding the first coordinate again.

if (!firstCoordinate.empty()) { // Make sure the ring wasn't empty.

feature << ", " << firstCoordinate;

}

feature << "]";

}

feature << " ] ]\n";

feature << "\t\t}\n";

feature << "\t}";

if (!firstGeoFeature) {

outputstr << ",\n" << feature.str();

} else {

firstGeoFeature = false;

outputstr << feature.str();

}

else if (dumpMode == KML_MODE) {

if (currentLevel == 1) { // finishing top-level front

outputstr << endl << " </Polygon>" << endl;

outputstr << " </Placemark>" << endl;

}

void StringRepresentation::postVisitInner(FireDomain* fd) { }

void StringRepresentation::postVisitAll(FireDomain* fd) { }

string StringRepresentation::dumpStringRepresentation() {

// Set dump mode based on simulation parameters.

string mode = SimulationParameters::GetInstance()->getParameter("dumpMode");

if (mode == "json")

dumpMode = JSON_MODE;

else if (mode == "ff")

dumpMode = FF_MODE;

else if (mode == "geojson")

dumpMode = GEOJSON_MODE;

else if (mode == "kml")

dumpMode = KML_MODE;

currentLevel = 0;

lastLevel = -1;

outputstr.str("");

if (domain != 0)

domain->accept(this);

// Append closing parts for each mode.

if (dumpMode == JSON_MODE) {

if (lastLevel >= 2)

outputstr << '"';

if (lastLevel >= 1)

outputstr << endl << "\t}" << endl;

if (lastLevel >= 0)

outputstr << "\t]" << endl << "}" << endl;

}

else if (dumpMode == GEOJSON_MODE) {

outputstr << "\n\t]" << endl;

outputstr << "}" << endl;

}

else if (dumpMode == KML_MODE) {

outputstr << "</Document>" << endl;

outputstr << "</kml>" << endl;

}

return outputstr.str();

}

void StringRepresentation::increaseLevel() {

currentLevel++;

}

void StringRepresentation::decreaseLevel() {

currentLevel--;

}

size_t StringRepresentation::getLevel() {

return currentLevel;

}

string StringRepresentation::toString() {

ostringstream oss;

oss << "string representation";

return oss.str();

}

} // namespace libforefire

firefront/src/StringRepresentation.cpp at master · OroraTech/firefront · GitHub

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