refactor: the rest of the systems refactored for V2

2025-07-29 18:07:16 +02:00 · 2022-12-29 18:59:10 +01:00
parent a9c190a7bf
commit 97da55edfa
62 changed files with 1179 additions and 3442 deletions
--- a/example/foot_pound_second.cpp
+++ b/example/foot_pound_second.cpp
@ -0,0 +1,117 @@
+// 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 <units/format.h>
+#include <units/imperial/imperial.h>
+#include <units/international/international.h>
+#include <units/isq/space_and_time.h>
+#include <units/si/unit_symbols.h>
+#include <iostream>
+#include <string_view>
+
+using namespace units;
+using namespace units::international::unit_symbols;
+using namespace units::si::unit_symbols;
+
+
+// Some basic specs for the warship
+struct Ship {
+  quantity<isq::length[ft]> length;
+  quantity<isq::length[ft]> draft;
+  quantity<isq::length[ft]> beam;
+
+  quantity<isq::speed[ft / s]> speed;
+  quantity<isq::mass[lb]> mass;
+
+  quantity<isq::length[in]> mainGuns;
+  quantity<isq::mass[lb]> shellMass;
+  quantity<isq::speed[ft / s]> shellSpeed;
+  quantity<isq::power[ft * pdl / s]> power;
+};
+
+// Print 'q' in its current units and print its value cast to the units in each of Us
+template<Unit auto... Us, Quantity Q>
+auto fmt_line(const Q& q)
+{
+  return STD_FMT::format("{:22}", q) + (STD_FMT::format(",{:20}", quantity_cast<Us>(q)) + ...);
+}
+
+// Print the ship details in the units as defined in the Ship struct, in other si::imperial units, and in SI
+void print_details(std::string_view description, const Ship& ship)
+{
+  const auto waterDensity = isq::density[lb / cubic<ft>](62.4);
+  std::cout << STD_FMT::format("{}\n", description);
+  std::cout << STD_FMT::format("{:20} : {}\n", "length", fmt_line<yd, m>(ship.length))
+            << STD_FMT::format("{:20} : {}\n", "draft", fmt_line<yd, m>(ship.draft))
+            << STD_FMT::format("{:20} : {}\n", "beam", fmt_line<yd, m>(ship.beam))
+            << STD_FMT::format("{:20} : {}\n", "mass", fmt_line<imperial::long_ton, t>(ship.mass))
+            << STD_FMT::format("{:20} : {}\n", "speed", fmt_line<kt, km / h>(ship.speed))
+            << STD_FMT::format("{:20} : {}\n", "power", fmt_line<hp, kW>(ship.power))
+            << STD_FMT::format("{:20} : {}\n", "main guns", fmt_line<in, mm>(ship.mainGuns))
+            << STD_FMT::format("{:20} : {}\n", "fire shells weighing", fmt_line<imperial::long_ton, kg>(ship.shellMass))
+            << STD_FMT::format("{:20} : {}\n", "fire shells at", fmt_line<mph, km / h>(ship.shellSpeed))
+            << STD_FMT::format("{:20} : {}\n", "volume underwater", fmt_line<m3, l>(ship.mass / waterDensity));
+}
+
+int main()
+{
+  using units::international::unit_symbols::ft;  // collides with si::femto<si::tonne>
+
+  // KMS Bismark, using the units the Germans would use, taken from Wiki
+  auto bismark = Ship{.length{isq::length[m](251.)},
+                      .draft{isq::length[m](9.3)},
+                      .beam{isq::length[m](36)},
+                      .speed{isq::speed[km / h](56)},
+                      .mass{isq::mass[t](50'300)},
+                      .mainGuns{isq::length[mm](380)},
+                      .shellMass{isq::mass[kg](800)},
+                      .shellSpeed{isq::speed[m / s](820.)},
+                      .power{isq::power[kW](110.45)}};
+
+  // USS Iowa, using units from the foot-pound-second system
+  auto iowa = Ship{.length{isq::length[ft](860.)},
+                   .draft{isq::length[ft](37.) + isq::length[in](2.)},
+                   .beam{isq::length[ft](108.) + isq::length[in](2.)},
+                   .speed{isq::speed[kt](33)},
+                   .mass{isq::mass[imperial::long_ton](57'540)},
+                   .mainGuns{isq::length[in](16)},
+                   .shellMass{isq::mass[lb](2700)},
+                   .shellSpeed{isq::speed[ft / s](2690.)},
+                   .power{isq::power[hp](212'000)}};
+
+  // HMS King George V, using units from the foot-pound-second system
+  auto kgv = Ship{.length{isq::length[ft](745.1)},
+                  .draft{isq::length[ft](33.) + isq::length[in](7.5)},
+                  .beam{isq::length[ft](103.2) + isq::length[in](2.5)},
+                  .speed{isq::speed[kt](28.3)},
+                  .mass{isq::mass[imperial::long_ton](42'245)},
+                  .mainGuns{isq::length[in](14)},
+                  .shellMass{isq::mass[lb](1'590)},
+                  .shellSpeed{isq::speed[ft / s](2483.)},
+                  .power{isq::power[hp](110'000)}};
+
+  print_details("KMS Bismark, defined in appropriate units from the SI system", bismark);
+  std::cout << "\n\n";
+  print_details("USS Iowa, defined in appropriate units foot-pound-second system", iowa);
+  std::cout << "\n\n";
+  print_details("HMS King George V, defined in appropriate units foot-pound-second system", kgv);
+}