From 24bf28a8fb9cc8c3a90b77de9b60728bece7885d Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Sat, 18 Oct 2025 18:01:14 +0200
Subject: Moving project structure for more less compilation

---
 lib/c++/converter.hpp | 79 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 79 insertions(+)
 create mode 100644 lib/c++/converter.hpp

(limited to 'lib/c++/converter.hpp')

diff --git a/lib/c++/converter.hpp b/lib/c++/converter.hpp
new file mode 100644
index 0000000..5c19c68
--- /dev/null
+++ b/lib/c++/converter.hpp
@@ -0,0 +1,79 @@
+#pragma once
+
+#include "lbm_unit.hpp"
+#include "descriptor.hpp"
+
+namespace kel {
+namespace lbm {
+
+namespace sch {
+using namespace saw::schema;
+}
+
+/**
+ * Helps converting from SI types to LBM types
+ */
+template<typename T>
+class converter {
+private:
+	saw::data<typename saw::unit_division<sch::SiMeter<T>, sch::LbmMeter<T> >::Schema > meter_conv_; 
+	saw::data<typename saw::unit_division<sch::SiSecond<T>, sch::LbmSecond<T> >::Schema > second_conv_; 
+public:
+	converter() = delete;
+	converter(
+		saw::data<typename saw::unit_division<sch::SiMeter<T>, sch::LbmMeter<T> >::Schema > meter_conv__,
+		saw::data<typename saw::unit_division<sch::SiSecond<T>, sch::LbmSecond<T> >::Schema > second_conv__
+	):
+		meter_conv_{meter_conv__},
+		second_conv_{second_conv__}
+	{}
+
+	/**
+	 * Get the conversion parameter with the conversion type
+	 */
+	auto conversion_x() const {
+		return meter_conv_;
+	}
+
+	/**
+	 * Get the conversion parameter with the conversion type
+	 */
+	auto conversion_t() const {
+		return second_conv_;
+	}
+
+	auto delta_x() const {
+		return meter_conv_*saw::data<sch::LbmMeter<T>>{1.0};
+	}
+
+	auto delta_t() const {
+		return second_conv_*saw::data<sch::LbmSecond<T>>{1.0};
+	}
+
+	saw::data<sch::LbmMeter<T>> meter_si_to_lbm(const saw::data<sch::SiMeter<T>>& m_si) const {
+		return m_si / meter_conv_;
+	}
+	
+	saw::data<sch::LbmSecond<T>> second_si_to_lbm(const saw::data<sch::SiSecond<T>>& s_si) const {
+		return s_si / second_conv_;
+	}
+	
+	saw::data<sch::LbmVelocity<T>> velocity_si_to_lbm(const saw::data<sch::SiVelocity<T>>& vel_si) const {
+		return vel_si * second_conv_ / meter_conv_;
+	}
+	
+	saw::data<sch::LbmAcceleration<T>> acceleration_si_to_lbm(const saw::data<sch::SiAcceleration<T>>& acc_si) const {
+		return acc_si * (second_conv_ * second_conv_) / meter_conv_;
+	}
+
+	saw::data<sch::LbmKinematicViscosity<T>> kinematic_viscosity_si_to_lbm (const saw::data<sch::SiKinematicViscosity<T>>& kin_si) const {
+		return (kin_si / (meter_conv_ * meter_conv_)) * second_conv_;
+	}
+
+	template<typename Desc>
+	saw::data<sch::Pure<T>> kinematic_viscosity_si_to_tau(const saw::data<sch::SiKinematicViscosity<T>>& kin_si) const {
+		return saw::data<sch::Pure<T>>{saw::data<typename saw::unit_division<sch::Pure<T>, sch::LbmKinematicViscosity<T>>::Schema >{df_info<T,Desc>::inv_cs2} * kinematic_viscosity_si_to_lbm(kin_si) + saw::data<sch::Pure<T>>{0.5}};
+	}
+};
+}
+}
-- 
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