From b0a68aba927aaafc97816d18b50b219a595b4dd2 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Fri, 18 Apr 2025 16:35:52 +0200
Subject: Compileable state

---
 c++/descriptor.hpp     |  3 +++
 c++/macroscopic.hpp    | 12 +++++++-----
 examples/cavity_2d.cpp |  6 +++---
 3 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/c++/descriptor.hpp b/c++/descriptor.hpp
index aa8c943..b1ee5b1 100644
--- a/c++/descriptor.hpp
+++ b/c++/descriptor.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
 #include <forstio/codec/data.hpp>
+#include <forstio/codec/schema_factory.hpp>
 
 namespace kel {
 namespace lbm {
@@ -164,10 +165,12 @@ public:
 		factory_struct_{inp}
 	{}
 
+	/*
 	template<typename TA, saw::string_literal KA>
 	constexpr auto require() const noexcept {
 		return {factory_struct_.add_maybe()};
 	}
+	*/
 };
  
 }
diff --git a/c++/macroscopic.hpp b/c++/macroscopic.hpp
index 608b89e..43c727b 100644
--- a/c++/macroscopic.hpp
+++ b/c++/macroscopic.hpp
@@ -1,18 +1,20 @@
 #pragma once
 
+#include "descriptor.hpp"
+
 namespace kel {
 namespace lbm {
 /**
  * Calculate the macroscopic variables rho and u in Lattice Units.
  */
-template<typename Desc>
+template<typename T, typename Desc>
 void compute_rho_u (
-		const saw::data<sch::DfCell<Desc>>& dfs,
-		typename saw::native_data_type<sch::T>::type& rho,
-		std::array<typename saw::native_data_type<sch::T>::type, 2>& vel
+		saw::data<sch::Cell<T, Desc, 0, 0, 1>>& dfs,
+		typename saw::native_data_type<T>::type& rho,
+		std::array<typename saw::native_data_type<T>::type, 2>& vel
 	)
 {
-	using dfi = df_info<sch::T, Desc>;
+	using dfi = df_info<T, Desc>;
 
 	rho = 0;
 	std::fill(vel.begin(), vel.end(), 0);
diff --git a/examples/cavity_2d.cpp b/examples/cavity_2d.cpp
index 5085635..55223a4 100644
--- a/examples/cavity_2d.cpp
+++ b/examples/cavity_2d.cpp
@@ -193,7 +193,7 @@ public:
 	void apply(saw::data<sch::DfCell<Desc>>& dfs){
 		typename saw::native_data_type<sch::T>::type rho;
 		std::array<typename saw::native_data_type<sch::T>::type, Desc::D> vel;
-		compute_rho_u<Desc>(dfs,rho,vel);
+		compute_rho_u<sch::T,Desc>(dfs,rho,vel);
 		auto eq = equilibrium<Desc>(rho,vel);
 		
 		for(uint64_t i = 0u; i < Desc::Q; ++i){
@@ -420,7 +420,7 @@ int main(){
 				auto& dfs = cell.template get<"dfs">();
 				typename saw::native_data_type<sch::T>::type rho;
 				std::array<typename saw::native_data_type<sch::T>::type, sch::D2Q9::D> vel;
-				compute_rho_u<sch::D2Q9>(dfs,rho,vel);
+				compute_rho_u<sch::T,sch::D2Q9>(dfs,rho,vel);
 
 				if(i > 1 && (i+2) < dim_x && j > 1 && (j+2) < dim_y){
 					sum += rho;
@@ -517,7 +517,7 @@ int main(){
 
 				typename saw::native_data_type<sch::T>::type rho;
 				std::array<typename saw::native_data_type<sch::T>::type, sch::D2Q9::D> vel;
-				compute_rho_u<sch::D2Q9>(dfs,rho,vel);
+				compute_rho_u<sch::T,sch::D2Q9>(dfs,rho,vel);
 
 				vtk_file << static_cast<float>(vel[0u]) << " " << static_cast<float>(vel[1u])<<" 0.0\n";
 			}, lattice);
-- 
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