From 5be771eb356263bf43c57056eba77df7235c78f4 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Fri, 27 Jun 2025 21:27:20 +0200
Subject: Fixing things

---
 examples/cavity_2d.cpp    | 26 ----------------------
 examples/poiseulle_2d.cpp | 56 +++++++++++++++++++++++++++++++++++++++++++----
 2 files changed, 52 insertions(+), 30 deletions(-)

diff --git a/examples/cavity_2d.cpp b/examples/cavity_2d.cpp
index 6ecdb23..6332bcf 100644
--- a/examples/cavity_2d.cpp
+++ b/examples/cavity_2d.cpp
@@ -52,33 +52,7 @@ using MacroStruct = Struct<
 >;
 
 using CavityFieldD2Q9 = CellField<D2Q9, CellStruct<D2Q9>>;
-}
-
-/**
- * Calculates the equilibrium for each direction
- */
-template<typename Desc>
-std::array<typename saw::native_data_type<sch::T>::type,Desc::Q> equilibrium(
-	typename saw::native_data_type<sch::T>::type rho,
-	const std::array<typename saw::native_data_type<sch::T>::type, Desc::D>& vel
-){
-	using dfi = df_info<sch::T, Desc>;
-
-	typename std::array<saw::native_data_type<sch::T>::type,Desc::Q> eq;
-
-	for(std::size_t i = 0u; i < eq.size(); ++i){
-		auto vel_c = (vel[0u]*dfi::directions[i][0u] + vel[1u]*dfi::directions[i][1u]);
-		auto vel_c_cs2 = vel_c * dfi::inv_cs2;
-		eq[i] = dfi::weights[i] * rho * (
-			1.0
-			+ vel_c_cs2
-			- dfi::inv_cs2 * 0.5 * ( vel[0u] * vel[0u] + vel[1u] * vel[1u] )
-			+ vel_c_cs2 * vel_c_cs2 * 0.5
-		);
-	}
 
-	return eq;
-}
 
 /*
 template<typename T, typename Encode>
diff --git a/examples/poiseulle_2d.cpp b/examples/poiseulle_2d.cpp
index 0ec4fc0..2f60ffd 100644
--- a/examples/poiseulle_2d.cpp
+++ b/examples/poiseulle_2d.cpp
@@ -44,6 +44,55 @@ using CavityFieldD2Q9 = CellField<D2Q9, CellStruct<D2Q9>>;
 }
 }
 
+void set_geometry(saw::data<kel::lbm::sch::CavityFieldD2Q9>& latt){
+	using namespace kel::lbm;
+
+	auto meta = latt.meta();
+	for(saw::data<sch::UInt64> i{0u}; i < meta.at(0u); ++i){
+		for(saw::data<sch::UInt64> j{0u}; j < meta.at(1u); ++j ){
+			auto& cell = latt({{i,j}});
+			auto& info = cell.template get<"info">();
+
+
+		}
+	}
+
+}
+
+void set_initial_conditions(saw::data<kel::lbm::sch::CavityFieldD2Q9>& latt){
+	using namespace kel::lbm;
+
+	typename saw::native_data_type<sch::T>::type rho = 1.0;
+	auto meta = latt.meta();
+
+	// Collide
+	for(saw::data<sch::UInt64> i{0u}; i < meta.at(0u); ++i){
+		for(saw::data<sch::UInt64> j{0u}; j < meta.at(1u); ++j ){
+			auto& cell = latt({{i,j}});
+			auto& info = cell.template get<"info">();
+
+		}
+	}
+	/*
+	{
+		std::array<typename saw::native_data_type<sch::T>::type, sch::D2Q9::D> vel = {0.0, 0.0};
+		auto eq = equilibrium<sch::D2Q9>(rho, vel);
+
+		apply_for_cells([&eq](auto& cell, std::size_t i, std::size_t j){
+			(void) i;
+			(void) j;
+			auto& dfs = cell.template get<"dfs">();
+			auto& dfs_old = cell.template get<"dfs_old">();
+			auto info = cell.template get<"info">()(0u).get();
+			for(uint64_t k = 0; k < sch::D2Q9::Q; ++k){
+				dfs(k).set(eq[k]);
+				dfs_old(k).set(eq[k]);
+			}
+		}, latt);
+	}
+	*/
+}
+
 int main(int argc, char** argv){
 	using namespace kel::lbm;
 
@@ -52,7 +101,7 @@ int main(int argc, char** argv){
 		cfg_file_name = argv[1];
 	}
 
-	auto eo_conf = load_lbm_config<sch::Float64,sch::Descriptor<2,9>>(cfg_file_name);
+	auto eo_conf = load_lbm_config<sch::Float64,sch::Descriptor<2u,9u>>(cfg_file_name);
 	if(eo_conf.is_error()){
 		auto& err = eo_conf.get_error();
 		std::cerr<<"[Error]: "<<err.get_category();
@@ -72,10 +121,9 @@ int main(int argc, char** argv){
 		{conf.template get<"delta_t">()}
 	};
 
-	print_lbm_meta<sch::Float64,sch::Descriptor<2,9>>(conv, {conf.template get<"kinematic_viscosity">()});
-
-	saw::data<sch::FixedArray<sch::UInt64,sch::D2Q9::D>> dim{{128, 128}};
+	print_lbm_meta<sch::Float64,sch::Descriptor<2u,9u>>(conv, {conf.template get<"kinematic_viscosity">()});
 
+	saw::data<sch::FixedArray<sch::UInt64,sch::D2Q9::D>> dim{{1024, 128}};
 	saw::data<sch::CavityFieldD2Q9, saw::encode::Native> lattice{dim};
 
 	return 0;
-- 
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