From 7a7d681ce70133ef0bc47a701f5b8448b15b3a29 Mon Sep 17 00:00:00 2001
From: "Claudius \"keldu\" Holeksa" <mail@keldu.de>
Date: Sun, 28 Jun 2026 19:17:52 +0200
Subject: Dangling

---
 lib/core/c++/particle/particle.hpp     |  1 +
 lib/core/c++/particle/particle_opa.hpp | 20 ++++++++++++++++++--
 2 files changed, 19 insertions(+), 2 deletions(-)

(limited to 'lib/core/c++')

diff --git a/lib/core/c++/particle/particle.hpp b/lib/core/c++/particle/particle.hpp
index 13ed37b..8e75e5a 100644
--- a/lib/core/c++/particle/particle.hpp
+++ b/lib/core/c++/particle/particle.hpp
@@ -8,6 +8,7 @@
 
 #include "schema.hpp"
 #include "aabb.hpp"
+#include "particle_opa.hpp"
 
 namespace kel {
 namespace lbm {
diff --git a/lib/core/c++/particle/particle_opa.hpp b/lib/core/c++/particle/particle_opa.hpp
index 470c4e9..4588a55 100644
--- a/lib/core/c++/particle/particle_opa.hpp
+++ b/lib/core/c++/particle/particle_opa.hpp
@@ -1,6 +1,7 @@
 #pragma once
 
-#include "component.hpp"
+#include "common.hpp"
+#include "../component.hpp"
 
 namespace kel {
 namespace lbm {
@@ -12,8 +13,19 @@ template<typename T, typename Descriptor, typename Encode>
 
 class component<T,Descriptor,cmpt::OneParticleAt, Encode> final {
 private:
+	saw::data<sch::Vector<T,Descriptor::D>> pos_;
+	saw::data<sch::Scalar<T>> rad_;
+	saw::data<sch::Scalar<T>> eps_;
 public:
-	component() = default;
+	component(
+		const saw::data<sch::Vector<T,Descriptor::D>> pos__,
+		const saw::data<sch::Scalar<T>> rad__,
+		const saw::data<sch::Scalar<T>> eps__
+	):
+		pos_{pos__},
+		rad_{rad__},
+		eps_{eps__}
+	{}
 
 	template<typename MacroFieldSchema>
 	void apply(const saw::data<MacroFieldSchema, Encode>& macros, const saw::data<sch::FixedArray<sch::UInt64,Descriptor::D>> index, saw::data<sch::UInt64> time_step) const {
@@ -24,6 +36,10 @@ public:
 		auto& porous = porous_f.at(index);
 
 
+		auto pos_ind = saw::math::vectorize_data(index);
+
+		auto diff = pos_ind - pos_;
+		auto diff_dot = saw::math::dot(diff,diff);
 	}
 };
 }
-- 
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