From ae5c44f37053d3df869dd6ac975f74a604c6de9d Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Fri, 18 Apr 2025 18:23:46 +0200
Subject: wip which doesn't compile yet

---
 c++/converter.hpp   | 28 ++++++++++++++++++++++++++++
 c++/lbm_unit.hpp    | 44 ++++++++++++++++++++++++++++++++++++--------
 tests/converter.cpp | 18 ++++++++++++++++++
 3 files changed, 82 insertions(+), 8 deletions(-)
 create mode 100644 tests/converter.cpp

diff --git a/c++/converter.hpp b/c++/converter.hpp
index e07847f..f3c3518 100644
--- a/c++/converter.hpp
+++ b/c++/converter.hpp
@@ -4,10 +4,38 @@
 
 namespace kel {
 namespace lbm {
+
+template<typename T>
 class converter {
 private:
+	saw::data<saw::unit_division<T, LbmMeter<T>, SiMeter<T> >> meter_conv_; 
+	saw::data<saw::unit_division<T, LbmSecond<T>, SiSecond<T> >> second_conv_; 
 public:
 	converter() = delete;
+	converter(
+		saw::data<saw::unit_division<T, LbmMeter<T>, SiMeter<T> >> meter_conv__,
+		saw::data<saw::unit_division<T, LbmSecond<T>, SiSecond<T> >> second_conv__
+	):
+		meter_conv_{meter_conv__},
+		second_conv_{second_conv__}
+	{}
+
+	saw::data<sch::LbmMeter<T>> meter_si_to_lbm(const saw::data<sch::SiMeter<T>>& m_si){
+		return m_si * meter_conv_;
+	}
+	
+	saw::data<sch::LbmSecond<T>> second_si_to_lbm(const saw::data<sch::SiSecond<T>>& s_si){
+		return s_si * second_conv_;
+	}
+	
+	saw::data<sch::LbmVelocity<T>> velocity_si_to_lbm(const saw::data<sch::SiVelocity<T>>& vel_si){
+		return vel_si * meter_conv_ / second_conv_;
+	}
+	
+	saw::data<sch::LbmAcceleration<T>> acceleration_si_to_lbm(const saw::data<sch::SiAcceleration<T>>& acc_si){
+		return acc_si * meter_conv_ / (second_conv_ * second_conv_);
+	}
+
 };
 }
 }
diff --git a/c++/lbm_unit.hpp b/c++/lbm_unit.hpp
index dc1f8e9..4cb9b52 100644
--- a/c++/lbm_unit.hpp
+++ b/c++/lbm_unit.hpp
@@ -8,26 +8,54 @@ namespace kel {
 namespace lbm {
 namespace lbm_type {
 struct meter {
-	static constexpr std::string_view name = "meter_l";
-	static constexpr std::string_view short_name = "m_l";
+	static constexpr std::string_view name = "meter_lbm";
+	static constexpr std::string_view short_name = "m_lbm";
 };
 
 struct second {
-	static constexpr std::string_view name = "second_l";
-	static constexpr std::string_view short_name = "s_l";
+	static constexpr std::string_view name = "second_lbm";
+	static constexpr std::string_view short_name = "s_lbm";
 };
 }
 
+namespace si_type {
+struct meter {
+	static constexpr std::string_view name = "meter_si";
+	static constexpr std::string_view short_name = "m_si";
+};
+
+struct second {
+	static constexpr std::string_view name = "second_si";
+	static constexpr std::string_view short_name = "s_si";
+};
+}
+
+namesapce sch {
+
+template<typename S>
+using SiMeter = schema::Unit<S, schema::UnitElement<si_type::meter, 1>>;
+
+template<typename S>
+using LbmMeter = schema::Unit<S, schema::UnitElement<lbm_type::meter, 1>>;
+
+template<typename S>
+using SiSecond = schema::Unit<S, schema::UnitElement<si_type::meter, 1>>;
+
 template<typename S>
-using lbm_meter = unit<S, unit_component<lbm_type::meter, 1>>;
+using LbmSecond = schema::Unit<S, schema::UnitElement<lbm_type::second, 1>>;
 
 template<typename S>
-using lbm_second = unit<S, unit_component<lbm_type::second, 1>>;
+using SiVelocity = schema::Unit<S, schema::UnitElement<si_type::meter, 1>, schema::UnitElement<si_type::second, -1>>;
 
 template<typename S>
-using lbm_velocity = unit<S, unit_component<lbm_type::meter, 1>, unit_component<lbm_type::second, -1>>;
+using LbmVelocity = schema::Unit<S, schema::UnitElement<lbm_type::meter, 1>, schema::UnitElement<lbm_type::second, -1>>;
 
 template<typename S>
-using lbm_acceleration = unit<S, unit_component<lbm_type::meter, 1>, unit_component<lbm_type::second, -2>>;
+using SiAcceleration = schema::Unit<S, schema::UnitElement<si_type::meter, 1>, schema::UnitElement<si_type::second, -2>>;
+
+template<typename S>
+using LbmAcceleration = schema::Unit<S, schema::UnitElement<lbm_type::meter, 1>, schema::UnitElement<lbm_type::second, -2>>;
+
+}
 }
 }
diff --git a/tests/converter.cpp b/tests/converter.cpp
new file mode 100644
index 0000000..3c66348
--- /dev/null
+++ b/tests/converter.cpp
@@ -0,0 +1,18 @@
+#include <forstio/test/suite.hpp>
+
+#include "../c++/converter.hpp"
+
+
+namespace {
+namespace sch {
+using namespace kel::lbm::sch;
+
+using T = Float64;
+}
+
+SAW_TEST("Meter"){
+	using namespace kel;
+
+	lbm::converter<sch::T> converter;
+}
+}
-- 
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