summaryrefslogtreecommitdiff
path: root/lib/core/c++
diff options
context:
space:
mode:
Diffstat (limited to 'lib/core/c++')
-rw-r--r--lib/core/c++/flatten.hpp44
-rw-r--r--lib/core/c++/particle/particle.hpp19
-rw-r--r--lib/core/c++/write_vtk.hpp129
3 files changed, 187 insertions, 5 deletions
diff --git a/lib/core/c++/flatten.hpp b/lib/core/c++/flatten.hpp
new file mode 100644
index 0000000..164bb77
--- /dev/null
+++ b/lib/core/c++/flatten.hpp
@@ -0,0 +1,44 @@
+#pragma once
+
+#include <forstio/error.hpp>
+#include <forstio/codec/data.hpp>
+
+namespace kel {
+namespace lbm {
+namespace sch {
+using namespace saw::schema;
+}
+
+template<typename T, uint64_t D>
+struct flatten_index {
+public:
+ template<uint64_t i>
+ static constexpr saw::data<sch::UInt64> stride(const saw::data<sch::FixedArray<sch::UInt64,D>>& meta) {
+ if constexpr (i > 0u){
+ return stride<i-1u>(meta) * meta.at({i-1u});
+ }
+
+ return 1u;
+ }
+
+private:
+ /// 2,3,4 => 2,6,24
+ /// i + j * 2 + k * 3*2
+ /// 1 + 2 * 2 + 3 * 3*2 = 1+4+18 = 23
+ template<uint64_t i>
+ static void apply_i(saw::data<sch::UInt64>& flat_ind, const saw::data<sch::FixedArray<T,D>>& index, const saw::data<sch::FixedArray<T,D>>& meta){
+ if constexpr ( D > i ) {
+ flat_ind = flat_ind + index.at({i}) * stride<i>(meta);
+ apply_i<i+1u>(flat_ind,index,meta);
+ }
+ }
+public:
+ static saw::data<T> apply(const saw::data<sch::FixedArray<T,D>>& index, const saw::data<sch::FixedArray<T,D>>& meta){
+ saw::data<T> flat_ind{0u};
+
+ apply_i<0u>(flat_ind, index, meta);
+ return flat_ind;
+ }
+};
+}
+}
diff --git a/lib/core/c++/particle/particle.hpp b/lib/core/c++/particle/particle.hpp
index 446e8a3..b647ebe 100644
--- a/lib/core/c++/particle/particle.hpp
+++ b/lib/core/c++/particle/particle.hpp
@@ -34,10 +34,11 @@ using ParticleCollisionSpheroid = Struct<
Member<T, "radius">
>;
-template<typename T, uint64_t D>
+template<typename T, uint64_t D, typename CollisionType = ParticleCollisionSpheroid<T>>
using Particle = Struct<
Member<ParticleRigidBody<T,D>, "rigid_body">,
Member<ParticleMask<T,D>, "mask">,
+ Member<CollisionType, "collision">,
Member<T, "mass">,
Member<T, "size">
>;
@@ -65,6 +66,22 @@ constexpr auto verlet_step_lambda = [](saw::data<sch::Particle<T,D>>& particle,
pos = pos_new;
};
+/**
+*
+*
+*/
+template<typename T, uint64_t>
+constexpr auto broadphase_collision_check = [](saw::data<sch::Particle<T,D>>& left, saw::data<sch::Particle<T,D>>& right){
+ auto rad_l = left.template get<"collision">().template get<"radius">();
+ auto rad_r = right.template get<"collision">().template get<"radius">();
+
+ auto& rb_l = left.template get<"rigid_body">();
+ auto& rb_r = right.template get<"rigid_body">();
+
+ auto& pos_l = rb_l.template get<"position">();
+ auto& pos_r = rb_r.template get<"position">();
+}
+
template<typename T, uint64_t D, typename ParticleCollision = sch::ParticleMask<T,D> >
class particle_system {
private:
diff --git a/lib/core/c++/write_vtk.hpp b/lib/core/c++/write_vtk.hpp
index 0647db5..7d42bc9 100644
--- a/lib/core/c++/write_vtk.hpp
+++ b/lib/core/c++/write_vtk.hpp
@@ -6,6 +6,7 @@
#include <forstio/codec/data_math.hpp>
#include "descriptor.hpp"
+#include "flatten.hpp"
#include <fstream>
#include <filesystem>
@@ -186,19 +187,139 @@ struct lbm_vtk_writer<sch::Array<sch::Struct<sch::Member<StructT,StructN>...> ,
return saw::make_void();
}
};
+
+template<typename StructT, uint64_t Dim>
+struct lbm_vtk_writer_raw {
+ template<uint64_t i, uint64_t Dep>
+ static saw::error_or<void> write_i_iterate_d(std::ostream& vtk_file, const saw::data<StructT>* field, const saw::data<sch::FixedArray<sch::UInt64,Dim>>& meta, saw::data<sch::FixedArray<sch::UInt64,Dim>>& index){
+ constexpr auto Lit = saw::schema_type_at_index<i, StructT>::Type::KeyLiteral;
+ using Type = typename saw::schema_type_at_index<i, StructT>::Type::ValueType;
+
+ if constexpr (Dep == 0u){
+ auto flat_index = flatten_index<sch::UInt64,Dim>::apply(index, meta);
+ return lbm_vtk_writer<Type>::apply(vtk_file, field[flat_index.get()].template get<Lit>());
+ } else {
+ // Dep < Dim // I hope
+ static_assert(Dep > 0u, "Don't fall into this case");
+ for(index.at({Dep-1u}) = 0; index.at({Dep-1u}) < meta.at({Dep-1u}); ++index.at({Dep-1u})){
+ auto eov = write_i_iterate_d<i,Dep-1u>(vtk_file, field, meta, index);
+ if(eov.is_error()){
+ return eov;
+ }
+ }
+ }
+ return saw::make_void();
+ }
+
+ template<uint64_t i>
+ static saw::error_or<void> write_i(std::ostream& vtk_file, const saw::data<StructT>* field, const saw::data<sch::FixedArray<sch::UInt64,Dim>>& meta){
+ constexpr auto Lit = saw::schema_type_at_index<i, StructT>::Type::KeyLiteral;
+
+ // auto meta = field.get_dims();
+ saw::data<sch::FixedArray<sch::UInt64,Dim>> index;
+ for(saw::data<sch::UInt64> it{0}; it.get() < Dim; ++it){
+ index.at({0u}).set(0u);
+ }
+ // vtk_file write?
+ // Data header
+ {
+
+ auto eov = lbm_vtk_writer<typename saw::schema_type_at_index<i,StructT>::Type::ValueType>::apply_header(vtk_file, Lit.view());
+ if(eov.is_error()){
+ return eov;
+ }
+
+ }
+ return write_i_iterate_d<i,Dim>(vtk_file, field, meta, index);
+ }
+ template<uint64_t i>
+ static saw::error_or<void> iterate_i(std::ostream& vtk_file, const saw::data<StructT>* field,
+ const saw::data<sch::FixedArray<sch::UInt64,Dim>>& meta){
+ {
+ auto eov = write_i<i>(vtk_file, field, meta);
+ if(eov.is_error()){
+ return eov;
+ }
+ }
+ if constexpr ( (i+1u) < saw::schema_width<StructT>::value ){
+ return iterate_i<i+1u>(vtk_file, field, meta);
+ }
+ return saw::make_void();
+ }
+
+ static saw::error_or<void> apply(std::ostream& vtk_file, const saw::data<StructT>* field,
+ const saw::data<sch::FixedArray<sch::UInt64,Dim>>& meta){
+
+ 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"
+ ;
+
+ saw::data<sch::UInt64> pd_size{1u};
+ // DIMENSIONS
+
+ {
+ vtk_file << "DIMENSIONS";
+ for(saw::data<sch::UInt64> i{0u}; i.get() < Dim; ++i){
+ pd_size = pd_size * meta.at(i);
+ vtk_file << " " << meta.at(i).get();
+ }
+ for(saw::data<sch::UInt64> i{Dim}; i.get() < 3u; ++i){
+ vtk_file << " 1";
+ }
+
+ vtk_file << "\n";
+ }
+
+ if constexpr (saw::schema_width<StructT>::value > 0u){
+ // POINT DATA
+ {
+ vtk_file << "POINT_DATA " << pd_size.get() <<"\n";
+ }
+
+ // HEADER TO BODY
+ {
+ vtk_file << "\n";
+ }
+
+ return iterate_i<0u>(vtk_file, field,meta);
+ }
+
+ return saw::make_void();
+ }
+};
}
-template<typename Struct>
-saw::error_or<void> write_vtk_file(const std::filesystem::path& file_name, const saw::data<Struct>& field){
+template<typename Sch>
+saw::error_or<void> write_vtk_file(const std::filesystem::path& file_name, const saw::data<Sch>& field){
std::ofstream vtk_file{file_name};
- if(!vtk_file.is_open()){
+ if( not vtk_file.is_open() ){
return saw::make_error<saw::err::critical>("Could not open file.");
}
+ auto eov = impl::lbm_vtk_writer<Sch>::apply(vtk_file, field);
+ return eov;
+}
+
+template<typename StructInRaw, uint64_t D>
+saw::error_or<void> write_vtk_file(
+ const std::filesystem::path& file_name,
+ const saw::data<StructInRaw>* field,
+ const saw::data<sch::FixedArray<sch::UInt64,D>>& meta
+ ){
+ std::ofstream vtk_file{file_name};
+
+ if( not 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);
+ auto eov = impl::lbm_vtk_writer_raw<StructInRaw,D>::apply(vtk_file, field, meta);
return eov;
}
}
generated by cgit v1.2.3 (git 2.25.1) at 2026-01-28 00:50:32 +0000