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authorClaudius "keldu" Holeksa <mail@keldu.de>2026-07-05 15:59:23 +0200
committerClaudius "keldu" Holeksa <mail@keldu.de>2026-07-05 15:59:23 +0200
commitc0549d71b2109f10c1238db8b22362e7826ba61b (patch)
tree16cd5264fcc3afe912e1b1b67738c8940d6d1177 /modules/core/c++/particle/geometry
parent9a3147bc79caf3c0fb1a9cdee29d156b5ff092c7 (diff)
downloadlibs-lbm-c0549d71b2109f10c1238db8b22362e7826ba61b.tar.gz
Just rename from lib to modules
Diffstat (limited to 'modules/core/c++/particle/geometry')
-rw-r--r--modules/core/c++/particle/geometry/circle.hpp85
-rw-r--r--modules/core/c++/particle/geometry/cube.hpp22
2 files changed, 107 insertions, 0 deletions
diff --git a/modules/core/c++/particle/geometry/circle.hpp b/modules/core/c++/particle/geometry/circle.hpp
new file mode 100644
index 0000000..cf9b87e
--- /dev/null
+++ b/modules/core/c++/particle/geometry/circle.hpp
@@ -0,0 +1,85 @@
+#pragma once
+
+#include "../particle.hpp"
+
+namespace kel {
+namespace lbm {
+
+template<typename T, uint64_t D>
+class particle_circle_geometry {
+private:
+public:
+ particle_circle_geometry()
+ {}
+
+ template<typename MT = T>
+ saw::data<sch::ParticleMask<MT,D>> generate_mask(uint64_t resolution, uint64_t boundary_nodes = 0) const {
+ saw::data<sch::ParticleMask<MT,D>> mask;
+
+ auto& grid = mask.template get<"grid">();
+ auto& com = mask.template get<"center_of_mass">();
+ com = {};
+
+ //uint64_t rad_i = static_cast<uint64_t>(resolution * radius_.get())+1u;
+ uint64_t diameter_i = resolution;
+ uint64_t size = diameter_i + 2*boundary_nodes;
+ grid = {{{size,size}}};
+
+ saw::data<T> delta_x{static_cast<typename saw::native_data_type<T>::type>(2.0 / static_cast<double>(diameter_i))};
+ saw::data<T> center = (saw::data<T>{1.0} + saw::data<T>{2.0} * saw::data<T>{static_cast<saw::native_data_type<T>::type>(boundary_nodes)/diameter_i});
+
+ saw::data<sch::FixedArray<sch::UInt64,D>> boundary_arr;
+ for(uint64_t i = 0u; i < D; ++i){
+ boundary_arr.set(boundary_nodes);
+ }
+
+ iterator<D>::apply([&](const auto& index){
+ grid.at(index).set(0);
+ }, {}, grid.dims());
+
+ iterator<D>::apply([&](const auto& index){
+ saw::data<sch::Vector<T,D>> f_ind;
+ for(uint64_t i = 0u; i < D; ++i){
+ f_ind.at({{i}}) = (index.at({{i}}) + 0.5) * delta_x - center;
+ }
+
+ auto norm_f_ind = saw::math::norm(f_ind);
+ }, {}, grid.dims(),boundary_arr);
+
+ for(uint64_t i = 0; i < size; ++i){
+ for(uint64_t j = 0; j < size; ++j){
+ grid.at({{i,j}}).set(0);
+ if(i >= boundary_nodes and j >= boundary_nodes and i < (diameter_i + boundary_nodes) and j < (diameter_i + boundary_nodes) ){
+ saw::data<T> fi = saw::data<T>{static_cast<saw::native_data_type<T>::type>(0.5+i)} * delta_x - center;
+ saw::data<T> fj = saw::data<T>{static_cast<saw::native_data_type<T>::type>(0.5+j)} * delta_x - center;
+
+ auto norm_f_ij = fi*fi + fj*fj;
+ if(norm_f_ij.get() <= 1){
+ grid.at({{i,j}}).set(1);
+ }
+ }
+ }
+ }
+
+ // I don't fully remember what this did
+ saw::data<T> total_mass{};
+ iterator::apply<D>::apply([&](const saw::data<sch::FixedArray<sch::UInt64,D>>& index){
+ auto ind_vec = saw::math::vectorize_data(index).template cast_to<T>();
+ for(uint64_t i{0u}; i < D; ++i){
+ ind_vec.at({{i}}) = ind_vec.at({{i}}) * grid.at(index);
+ }
+ com = com + ind_vec;
+
+ total_mass = total_mass + grid.at(index);
+ },{}, grid.dims());
+
+ for(uint64_t i{0u}; i < D; ++i){
+ com.at({{i}}) = com.at({{i}}) / total_mass;
+ }
+
+ return mask;
+ }
+};
+
+}
+}
diff --git a/modules/core/c++/particle/geometry/cube.hpp b/modules/core/c++/particle/geometry/cube.hpp
new file mode 100644
index 0000000..6392de8
--- /dev/null
+++ b/modules/core/c++/particle/geometry/cube.hpp
@@ -0,0 +1,22 @@
+#pragma once
+
+#include "../particle.hpp"
+
+namespace kel {
+namespace lbm {
+template<typename T, uint64_t D>
+class particle_cubic_geometry {
+private:
+public:
+ template<typename MT = T>
+ saw::data<sch::ParticleMask<MT,D>> generate_mask(uint64_t resolution, uint64_t bound_nodes = 0u){
+
+ saw::data<sch::ParticleMask<MT,D>> mask;
+
+ auto& grid = mask.template get<"grid">();
+ auto& com = mask.template get<"center_of_mass">();
+
+
+ }
+}
+}