From db81d74c3959fded1c32fe4e95f2efeed04938ee Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Fri, 31 Oct 2025 14:25:09 +0100
Subject: Adding 3D poiseulle and using http fetching

---
 lib/c++/boundary.hpp   |  8 ++++----
 lib/c++/collision.hpp  | 10 +++++-----
 lib/c++/descriptor.hpp |  3 +++
 3 files changed, 12 insertions(+), 9 deletions(-)

(limited to 'lib')

diff --git a/lib/c++/boundary.hpp b/lib/c++/boundary.hpp
index 5cc7705..c10784c 100644
--- a/lib/c++/boundary.hpp
+++ b/lib/c++/boundary.hpp
@@ -44,8 +44,8 @@ public:
 	 * Raw setup
 	 */
 	template<typename CellFieldSchema>
-	void apply(saw::data<CellFieldSchema, Encode>& field, const saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>>& index, uint64_t time_step){
-		bool is_even = ((time_step % 2u) == 0u);
+	void apply(saw::data<CellFieldSchema, Encode>& field, const saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>>& index, saw::data<sch::UInt64> time_step){
+		bool is_even = ((time_step.get() % 2u) == 0u);
 
 		// This is a ref
 		auto& cell = field(index);
@@ -88,10 +88,10 @@ public:
 	{}
 
 	template<typename CellFieldSchema>
-	void apply(saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, uint64_t time_step){
+	void apply(saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, saw::data<sch::UInt64> time_step){
 		using dfi = df_info<FP,Descriptor>;
 
-		bool is_even = ((time_step % 2) == 0);
+		bool is_even = ((time_step.get() % 2) == 0);
 		auto& cell = field(index);
 
 		auto& info = cell.template get<"info">();
diff --git a/lib/c++/collision.hpp b/lib/c++/collision.hpp
index 9ab542b..73e86ae 100644
--- a/lib/c++/collision.hpp
+++ b/lib/c++/collision.hpp
@@ -45,9 +45,9 @@ public:
 	 * Raw setup
 	 */
 	template<typename CellFieldSchema>
-	void apply(saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, uint64_t time_step){
-		bool is_even = ((time_step % 2) == 0);
-		auto& cell = field(index);
+	void apply(saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, saw::data<sch::UInt64> time_step){
+		bool is_even = ((time_step.get() % 2) == 0);
+		auto& cell = field.at(index);
 
 		auto& dfs_old = (is_even) ? cell.template get<"dfs_old">() : cell.template get<"dfs">();
 		// auto& dfs = (not is_even) ? cell.template get<"dfs_old">() : cell.template get<"dfs">();
@@ -90,8 +90,8 @@ public:
 	static constexpr saw::string_literal before = "streaming";
 
 	template<typename CellFieldSchema>
-	void apply(saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64, Descriptor::D>> index, uint64_t time_step){
-		bool is_even = ((time_step % 2) == 0);
+	void apply(saw::data<CellFieldSchema, Encode>& field, saw::data<sch::FixedArray<sch::UInt64, Descriptor::D>> index, saw::data<sch::UInt64> time_step){
+		bool is_even = ((time_step.get() % 2) == 0);
 		auto& cell = field(index);
 
 		auto& dfs_old = (is_even) ? cell.template get<"dfs_old">() : cell.template get<"dfs">();
diff --git a/lib/c++/descriptor.hpp b/lib/c++/descriptor.hpp
index 1e3402f..c6938e3 100644
--- a/lib/c++/descriptor.hpp
+++ b/lib/c++/descriptor.hpp
@@ -311,6 +311,9 @@ public:
 	}
 };
 
+/*
+ * Create a cellfield
+ */
 template<typename Desc, typename CellT, typename Encode>
 class data<kel::lbm::sch::CellField<Desc, CellT>, Encode> final {
 public:
-- 
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