refactor: glide_computer and storage_tank examples renamed

example/glide_computer.cpp

@@ -0,0 +1,202 @@
+// The MIT License (MIT)
+//
+// Copyright (c) 2018 Mateusz Pusz
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+// SOFTWARE.
+
+#include "glide_computer.h"
+#include <mp-units/bits/fmt_hacks.h>
+#include <mp-units/chrono.h>
+#include <mp-units/math.h>
+#include <mp-units/systems/international/international.h>
+#include <mp-units/systems/si/unit_symbols.h>
+#include <array>
+#include <exception>
+#include <iostream>
+#include <iterator>
+#include <string>
+#include <utility>
+#include <vector>
+
+namespace {
+
+using namespace geographic;
+using namespace glide_computer;
+using namespace mp_units;
+
+auto get_gliders()
+{
+  using namespace mp_units::si::unit_symbols;
+  UNITS_DIAGNOSTIC_PUSH
+  UNITS_DIAGNOSTIC_IGNORE_MISSING_BRACES
+  static const std::array gliders = {glider{"SZD-30 Pirat", {83 * (km / h), -0.7389 * (m / s)}},
+                                     glider{"SZD-51 Junior", {80 * (km / h), -0.6349 * (m / s)}},
+                                     glider{"SZD-48 Jantar Std 3", {110 * (km / h), -0.77355 * (m / s)}},
+                                     glider{"SZD-56 Diana", {110 * (km / h), -0.63657 * (m / s)}}};
+  UNITS_DIAGNOSTIC_POP
+  return gliders;
+}
+
+auto get_weather_conditions()
+{
+  using namespace mp_units::si::unit_symbols;
+  static const std::array weather_conditions = {std::pair{"Good", weather{1900 * m, 4.3 * (m / s)}},
+                                                std::pair{"Medium", weather{1550 * m, 2.8 * (m / s)}},
+                                                std::pair{"Bad", weather{850 * m, 1.8 * (m / s)}}};
+  return weather_conditions;
+}
+
+auto get_waypoints()
+{
+  using namespace geographic::literals;
+  using namespace mp_units::international::unit_symbols;
+  static const std::array waypoints = {
+    waypoint{"EPPR", {54.24772_N, 18.6745_E}, msl_altitude{16. * ft}},   // N54°14'51.8" E18°40'28.2"
+    waypoint{"EPGI", {53.52442_N, 18.84947_E}, msl_altitude{115. * ft}}  // N53°31'27.9" E18°50'58.1"
+  };
+  return waypoints;
+}
+
+template<std::ranges::input_range R>
+  requires(std::same_as<std::ranges::range_value_t<R>, glider>)
+void print(const R& gliders)
+{
+  std::cout << "Gliders:\n";
+  std::cout << "========\n";
+  for (const auto& g : gliders) {
+    std::cout << "- Name: " << g.name << "\n";
+    std::cout << "- Polar:\n";
+    for (const auto& p : g.polar) {
+      const auto ratio = value_cast<one>(glide_ratio(g.polar[0]));
+      std::cout << UNITS_STD_FMT::format("  * {:%.4Q %q} @ {:%.1Q %q} -> {:%.1Q %q} ({:%.1Q %q})\n", p.climb, p.v,
+                                         ratio,
+                                         // TODO is it possible to make ADL work below (we need another set of trig
+                                         // functions for strong angle in a different namespace)
+                                         value_cast<si::degree>(isq::asin(1 / ratio)));
+    }
+    std::cout << "\n";
+  }
+}
+
+template<std::ranges::input_range R>
+  requires(std::same_as<std::ranges::range_value_t<R>, std::pair<const char*, weather>>)
+void print(const R& conditions)
+{
+  std::cout << "Weather:\n";
+  std::cout << "========\n";
+  for (const auto& c : conditions) {
+    std::cout << "- " << c.first << "\n";
+    const auto& w = c.second;
+    std::cout << "  * Cloud base:        " << UNITS_STD_FMT::format("{:%.0Q %q}", w.cloud_base) << " AGL\n";
+    std::cout << "  * Thermals strength: " << UNITS_STD_FMT::format("{:%.1Q %q}", w.thermal_strength) << "\n";
+    std::cout << "\n";
+  }
+}
+
+template<std::ranges::input_range R>
+  requires(std::same_as<std::ranges::range_value_t<R>, waypoint>)
+void print(const R& waypoints)
+{
+  std::cout << "Waypoints:\n";
+  std::cout << "==========\n";
+  for (const auto& w : waypoints)
+    std::cout << UNITS_STD_FMT::format("- {}: {} {}, {:%.1Q %q}\n", w.name, w.pos.lat, w.pos.lon, w.alt);
+  std::cout << "\n";
+}
+
+void print(const task& t)
+{
+  std::cout << "Task:\n";
+  std::cout << "=====\n";
+
+  std::cout << "- Start: " << t.get_start().name << "\n";
+  std::cout << "- Finish: " << t.get_finish().name << "\n";
+  std::cout << "- Length:  " << UNITS_STD_FMT::format("{:%.1Q %q}", t.get_distance()) << "\n";
+
+  std::cout << "- Legs: "
+            << "\n";
+  for (const auto& l : t.get_legs())
+    std::cout << UNITS_STD_FMT::format("  * {} -> {} ({:%.1Q %q})\n", l.begin().name, l.end().name, l.get_distance());
+  std::cout << "\n";
+}
+
+void print(const safety& s)
+{
+  std::cout << "Safety:\n";
+  std::cout << "=======\n";
+  std::cout << "- Min AGL separation: " << UNITS_STD_FMT::format("{:%.0Q %q}", s.min_agl_height) << "\n";
+  std::cout << "\n";
+}
+
+void print(const aircraft_tow& tow)
+{
+  std::cout << "Tow:\n";
+  std::cout << "====\n";
+  std::cout << "- Type:        aircraft\n";
+  std::cout << "- Height:      " << UNITS_STD_FMT::format("{:%.0Q %q}", tow.height_agl) << "\n";
+  std::cout << "- Performance: " << UNITS_STD_FMT::format("{:%.1Q %q}", tow.performance) << "\n";
+  std::cout << "\n";
+}
+
+void example()
+{
+  using namespace mp_units::si::unit_symbols;
+
+  const safety sfty = {300 * m};
+  const auto gliders = get_gliders();
+  const auto waypoints = get_waypoints();
+  const auto weather_conditions = get_weather_conditions();
+  const task t = {waypoints[0], waypoints[1], waypoints[0]};
+  const aircraft_tow tow = {400 * m, 1.6 * (m / s)};
+  // TODO use C++20 date library when available
+  // set `start_time` to 11:00 am today
+  const timestamp start_time(std::chrono::system_clock::now());
+
+  print(sfty);
+  print(gliders);
+  print(waypoints);
+  print(weather_conditions);
+  print(t);
+  print(tow);
+
+  for (const auto& g : gliders) {
+    for (const auto& c : weather_conditions) {
+      std::string txt = "Scenario: Glider = " + g.name + ", Weather = " + c.first;
+      std::cout << txt << "\n";
+      std::cout << UNITS_STD_FMT::format("{0:=^{1}}\n\n", "", txt.size());
+
+      estimate(start_time, g, c.second, t, sfty, tow);
+
+      std::cout << "\n\n";
+    }
+  }
+}
+
+}  // namespace
+
+int main()
+{
+  try {
+    example();
+  } catch (const std::exception& ex) {
+    std::cerr << "Unhandled std exception caught: " << ex.what() << '\n';
+  } catch (...) {
+    std::cerr << "Unhandled unknown exception caught\n";
+  }
+}