mirror of
https://github.com/MaSzyna-EU07/maszyna.git
synced 2026-10-26 19:24:54 +01:00
97 lines
3.6 KiB
C++
97 lines
3.6 KiB
C++
/*
|
|
This Source Code Form is subject to the
|
|
terms of the Mozilla Public License, v.
|
|
2.0. If a copy of the MPL was not
|
|
distributed with this file, You can
|
|
obtain one at
|
|
http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <condition_variable>
|
|
#include <cstdint>
|
|
#include <deque>
|
|
#include <map>
|
|
#include <memory>
|
|
#include <mutex>
|
|
#include <set>
|
|
#include <string>
|
|
#include <thread>
|
|
#include <utility>
|
|
#include <vector>
|
|
|
|
#include <glm/glm.hpp>
|
|
|
|
// heights of the ground from the digital terrain model of GUGiK (NMT, the WCS service of geoportal.gov.pl): squares of the
|
|
// EPSG:2180 grid fetched in the background at 1 m, kept on the disk and sampled in the coordinates of the scenery. the
|
|
// scenery is placed on the grid by the PUWG 1992 coordinates of its point (0,0,0), as the orthophoto is: easting = east - x,
|
|
// northing = north + z. the heights are those of the model, metres over the sea
|
|
class editor_nmt
|
|
{
|
|
public:
|
|
editor_nmt();
|
|
~editor_nmt();
|
|
editor_nmt(editor_nmt const &) = delete;
|
|
editor_nmt &operator=(editor_nmt const &) = delete;
|
|
|
|
// where the point (0,0,0) of the scenery lies in PUWG 1992; the squares fetched stay, only the mapping changes
|
|
void place(double const North, double const East);
|
|
// a scenery at (0,0) isn't placed anywhere
|
|
bool placed() const;
|
|
// the height of the model at the point of the scenery; false where its square isn't in yet or the model has no data
|
|
bool height(double const X, double const Z, double &Height) const;
|
|
// the squares under the rectangle of the scenery (x, z) asked for in the background, the ones nearest its middle first;
|
|
// true if all of them are in already, those the service couldn't give included
|
|
bool request(glm::dvec2 const &Min, glm::dvec2 const &Max);
|
|
// squares asked for and not in yet
|
|
std::size_t waiting() const;
|
|
// a square under the rectangle the service didn't give, which is asked for again after a while
|
|
bool retrying(glm::dvec2 const &Min, glm::dvec2 const &Max) const;
|
|
// the squares the service didn't give asked for again at once
|
|
void retry();
|
|
// the squares waiting aren't fetched; those in stay
|
|
void cancel();
|
|
// why squares in memory have no data, empty when all came; a place outside of the model is told first. Again: whether
|
|
// some of them are asked for again
|
|
std::string error(bool *Again = nullptr) const;
|
|
// the squares dropped from the memory, and those waiting; the files on the disk stay
|
|
void clear();
|
|
// whether this build can fetch from the service at all
|
|
static bool can_download();
|
|
|
|
// side of a square of the grid, m
|
|
static double constexpr square_size{500.0};
|
|
|
|
private:
|
|
using key = std::pair<int, int>; // easting and northing index of the square on the grid
|
|
struct square
|
|
{
|
|
double east{0.0}; // of the outer edge of the first column
|
|
double north{0.0}; // of the outer edge of the first row, the northernmost
|
|
double pixel{1.0};
|
|
int width{0};
|
|
int height{0};
|
|
std::vector<float> heights; // rows from the north, columns from the west
|
|
bool failed{false}; // the service gave nothing usable: the square has no data
|
|
bool outside{false}; // failed for it lies outside of the model: asked again, it gives nothing either
|
|
double failed_at{0.0}; // s
|
|
std::string error;
|
|
};
|
|
|
|
key key_of(double const East, double const North) const;
|
|
void work();
|
|
std::shared_ptr<square const> fetch(key const &Key, std::string &Error);
|
|
|
|
mutable std::mutex m_mutex;
|
|
std::condition_variable m_wake;
|
|
std::vector<std::thread> m_workers;
|
|
std::deque<key> m_queue;
|
|
std::set<key> m_queued;
|
|
std::map<key, std::shared_ptr<square const>> m_squares;
|
|
std::string m_coverage; // the name of the model in the service, read from its capabilities once
|
|
double m_north{0.0};
|
|
double m_east{0.0};
|
|
bool m_stop{false};
|
|
};
|