area.cpp

#include "pch.h"

#include "area.h"
#include "messageHandler.h"
#include "utils.h"

#include <algorithm>
#include <stdexcept>

vsid::Area::Area(std::vector<std::pair<std::string, std::string>> &coords, bool isActive, bool arrAsDep)
{
	for (std::pair<std::string, std::string>& coord : coords)
	{
		if(coord.first.empty() || coord.second.empty())
		{
			messageHandler->writeMessage("WARNING", "Empty coordinate string found (first: \"" + coord.first +
				"\" / second: \"" + coord.second + "\"!  Skipping coordinate.");
			continue;
		}
		this->points.push_back(toPoint(coord));
	}

	for (auto it = this->points.begin(); it != this->points.end();)
	{
		Point p1 = *it;
		Point p2;
		++it;
		if (it != this->points.end())
		{
			p2 = *it;
		}
		else
		{
			p2 = *this->points.begin();
		}
		this->lines.push_back({ p1, p2 });
	}
	this->isActive = isActive;
	this->arrAsDep = arrAsDep;
}

void vsid::Area::showline()
{
	for (auto& line : this->lines)
	{
		messageHandler->writeMessage("DEBUG", "line: " + std::to_string(line.first.lon) + ":" + std::to_string(line.first.lat) + " - " +
			std::to_string(line.second.lon) + "." + std::to_string(line.second.lat));
	}
}

vsid::Area::Point vsid::Area::toPoint(std::pair<std::string, std::string> &pos)
{
	/*double lat = toDeg(pos.first);
	double lon = toDeg(pos.second);*/

	double lat = vsid::utils::toDeg(pos.first);
	double lon = vsid::utils::toDeg(pos.second);

	return {lat, lon};
}

bool vsid::Area::inside(const EuroScopePlugIn::CPosition& fplnPos)
{
	std::pair<Point, Point> l5 = { {fplnPos.m_Latitude, fplnPos.m_Longitude}, {fplnPos.m_Latitude + 0.05, fplnPos.m_Longitude + 0.05} };
	bool inside = false;

	for (auto &line : this->lines)
	{
		if (fplnPos.m_Latitude > std::min<double>(line.first.lat, line.second.lat))
		{
			if (fplnPos.m_Latitude <= std::max<double>(line.first.lat, line.second.lat))
			{
				if (fplnPos.m_Longitude <= std::max<double>(line.first.lon, line.second.lon))
				{
					double x_inter = (fplnPos.m_Latitude - line.first.lat) *
									(line.second.lon - line.first.lon) /
									(line.second.lat - line.first.lat) + line.first.lon;

					if (line.first.lon == line.second.lon || fplnPos.m_Longitude <= x_inter)
					{
						inside = !inside;
					}
				}
			}
		}
	}	
	return inside;
}