1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
#pragma once
#include <forstio/error.hpp>
#include <forstio/codec/data.hpp>
#include "descriptor.hpp"
#include <fstream>
namespace kel {
namespace lbm {
namespace impl {
template<typename CellFieldSchema>
struct lbm_vtk_writer {
};
template<typename... MemberTypes, saw::string_literal... MemberNames>
struct lbm_vtk_writer<sch::Struct<sch::Member<MemberTypes,MemberNames>...>> {
static saw::error_or<void> apply(){
return saw::make_void();
}
};
template<typename T, uint64_t D>
struct lbm_vtk_writer<sch::FixedArray<T,D>> {
static saw::error_or<void> apply(std::ostream& vtk_file, std::string_view name){
vtk_file<<"VECTORS "<<name<<" float\n";
}
};
template<typename Sch, typename Desc, uint64_t SC_V, uint64_t DC_V, uint64_t QC_V>
struct lbm_vtk_writer<sch::Cell<Sch,Desc,SC_V, DC_V, QC_V>> {
static saw::error_or<void> apply(std::ostream& vtk_file, std::string_view name){
vtk_file<<"VECTORS "<<name<<" float\n";
return saw::make_void();
}
};
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>
static 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){
}
return saw::make_void();
}
template<uint64_t i>
static 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;
for(saw::data<sch::UInt64> it{0}; it.get() < Desc::D; ++it){
index.at({0u}).set(0u);
}
// vtk_file write?
// Data header
{
auto eov = lbm_vtk_writer<typename saw::parameter_pack_type<i,StructT...>::type>::apply(vtk_file, saw::parameter_key_pack_type<i, StructN...>::literal.view());
}
return write_i_iterate_d<i,0u>(vtk_file, field, index);
return saw::make_void();
}
template<uint64_t i>
static 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()){
return eov;
}
}
if constexpr ( (i+1u) < sizeof...(StructT) ){
return iterate_i<i+1u>(vtk_file, field);
}
return saw::make_void();
}
static 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};
// DIMENSIONS
{
vtk_file << "DIMENSIONS ";
for(saw::data<sch::UInt64> i{0u}; i.get() < Desc::D; ++i){
pd_size = pd_size * meta.at(i);
vtk_file << " " << meta.at(i).get();
}
for(saw::data<sch::UInt64> i{Desc::D}; i.get() < 3u; ++i){
vtk_file << " 1";
}
vtk_file << "\n";
}
if constexpr (sizeof...(StructT) > 0u){
// POINT DATA
{
vtk_file << "POINT_DATA " << pd_size.get() <<"\n";
}
// HEADER TO BODY
{
vtk_file << "\n";
}
return iterate_i<0u>(vtk_file, field);
}
return saw::make_void();
}
};
}
template<typename Struct>
saw::error_or<void> write_vtk_file(const std::string_view file_name, const saw::data<Struct>& field){
std::string vtk_file_name{file_name};
std::ofstream vtk_file{vtk_file_name};
if(!vtk_file.is_open()){
return saw::make_error<saw::err::critical>("Could not open file.");
}
auto eov = impl::lbm_vtk_writer<Struct>::apply(vtk_file, field);
return eov;
/*
vtk_file <<"# vtk DataFile Version 3.0\n";
vtk_file <<"Velocity Cavity2D example\n";
vtk_file <<"ASCII\n";
vtk_file <<"DATASET STRUCTURED_POINTS\n";
vtk_file <<"DIMENSIONS "<< dim_x <<" "<<dim_y<<" 1\n";
vtk_file <<"SPACING 1.0 1.0 1.0\n";
vtk_file <<"ORIGIN 0.0 0.0 0.0\n";
vtk_file <<"POINT_DATA "<<(dim_x*dim_y)<<"\n";
vtk_file <<"VECTORS Velocity float\n";
*/
}
}
}
|
