From 4392406a1b737987e2e8cfaffd31fe37116a90b7 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Wed, 30 Apr 2025 20:21:03 +0200
Subject: wip vtk tests

---
 c++/write_vtk.hpp | 28 ++++++++++++++--------------
 1 file changed, 14 insertions(+), 14 deletions(-)

(limited to 'c++')

diff --git a/c++/write_vtk.hpp b/c++/write_vtk.hpp
index 3a2bd68..3e417f8 100644
--- a/c++/write_vtk.hpp
+++ b/c++/write_vtk.hpp
@@ -26,7 +26,7 @@ struct lbm_vtk_writer<sch::Struct<sch::Member<MemberTypes,MemberNames>...>> {
 
 template<typename T, uint64_t D>
 struct lbm_vtk_writer<sch::FixedArray<T,D>> {
-	static saw::error_or<void> apply(std::ofstream& vtk_file, std::string_view name){
+	static saw::error_or<void> apply(std::ostream& vtk_file, std::string_view name){
 		vtk_file<<"VECTORS "<<name<<" float\n";
 	}
 };
@@ -34,14 +34,14 @@ struct lbm_vtk_writer<sch::FixedArray<T,D>> {
 template<typename Desc, typename... StructT, saw::string_literal... StructN>
 struct lbm_vtk_writer<sch::CellField<Desc,sch::Struct<sch::Member<StructT,StructN>...>>> {
 	template<uint64_t i, uint64_t Dep>
-	saw::error_or<void> write_i_iterate_d(std::ofstream& vtk_file, const saw::data<sch::CellField<Desc,sch::Struct<sch::Member<StructT,StructN>...>>>& field, saw::data<sch::FixedArray<sch::UInt64,Desc::D>>& index){
+	saw::error_or<void> write_i_iterate_d(std::ostream& vtk_file, const saw::data<sch::CellField<Desc,sch::Struct<sch::Member<StructT,StructN>...>>>& field, saw::data<sch::FixedArray<sch::UInt64,Desc::D>>& index){
 		if constexpr (Dep == Desc::D){
 
 		}
 	}
 
 	template<uint64_t i>
-	saw::error_or<void> write_i(std::ofstream& vtk_file, const saw::data<sch::CellField<Desc,sch::Struct<sch::Member<StructT,StructN>...>>>& field){
+	saw::error_or<void> write_i(std::ostream& vtk_file, const saw::data<sch::CellField<Desc,sch::Struct<sch::Member<StructT,StructN>...>>>& field){
 
 		auto meta = field.meta();
 		saw::data<sch::FixedArray<sch::UInt64,Desc::D>> index;
@@ -59,7 +59,7 @@ struct lbm_vtk_writer<sch::CellField<Desc,sch::Struct<sch::Member<StructT,Struct
 	}
 
 	template<uint64_t i>
-	saw::error_or<void> iterate_i(std::ofstream& vtk_file, const saw::data<sch::CellField<Desc,sch::Struct<sch::Member<StructT,StructN>...>>>& field){
+	saw::error_or<void> iterate_i(std::ostream& vtk_file, const saw::data<sch::CellField<Desc,sch::Struct<sch::Member<StructT,StructN>...>>>& field){
 		{
 			auto eov = write_i<i>(vtk_file, field);
 			if(eov.is_error()){
@@ -72,8 +72,17 @@ struct lbm_vtk_writer<sch::CellField<Desc,sch::Struct<sch::Member<StructT,Struct
 		return saw::make_void();
 	}
 
-	saw::error_or<void> apply(std::ofstream& vtk_file, 
+	saw::error_or<void> apply(std::ostream& vtk_file,
 		const saw::data<sch::CellField<Desc,sch::Struct<sch::Member<StructT,StructN>...>>>& field){
+
+		vtk_file
+			<<"# vtk DataFile Version 3.0\n"
+			<<"LBM File\n"
+			<<"ASCII\n"
+			<<"DATASET STRUCTURED POINTS\n"
+			<<"SPACING 1.0 1.0 1.0\n"
+			<<"ORIGIN 0.0 0.0 0.0\n"
+		;
 		
 		auto meta = field.meta();
 		saw::data<sch::UInt64> pd_size{1u};
@@ -120,15 +129,6 @@ saw::error_or<void> write_vtk(const std::string_view file_name, const saw::data<
 		return saw::make_error<saw::err::critical>("Could not open file.");
 	}
 
-	vtk_file
-		<<"# vtk DataFile Version 3.0\n"
-		<<"LBM File\n"
-		<<"ASCII\n"
-		<<"DATASET STRUCTURED POINTS\n"
-		<<"SPACING 1.0 1.0 1.0\n"
-		<<"ORIGIN 0.0 0.0 0.0\n"
-	;
-
 
 	auto eov = impl::lbm_vtk_writer<Struct>::apply(vtk_file, field);
 	return eov;
-- 
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