From a56705383fa8687f672a051063fe920f77974a21 Mon Sep 17 00:00:00 2001
From: randogoth <kflux@posteo.de>
Date: Sun, 7 Apr 2024 16:25:48 +0300
Subject: [PATCH] optional parallel processing

---
 readme.md  |  4 +++-
 src/lib.rs | 33 +++++++++++++++++++++------------
 2 files changed, 24 insertions(+), 13 deletions(-)

diff --git a/readme.md b/readme.md
index dae142b..2261de9 100644
--- a/readme.md
+++ b/readme.md
@@ -44,7 +44,9 @@ fn main() {
     println!("Generated Delaunay triangulation");
 
     // Pre-process triangles
-    xeno.preprocess(0);
+    // 1 - attractors, 2 - voids, 0 - both
+    // true/false - parallel processing
+    xeno.preprocess(0, false);
 
     // Execute delfin function with the generated GeometryData
     let min_area: f32 = 1000.0; // threshold for voidness
diff --git a/src/lib.rs b/src/lib.rs
index d134e5f..89854b0 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -258,18 +258,27 @@ impl Xenobalanus {
     self.triangulation = result.triangles
     }
 
-    pub fn preprocess(&mut self, types: usize) {
-        let geometry_data = Arc::new(Mutex::new(GeometryData::new()));
-    
-        self.triangulation.par_chunks(3).enumerate().for_each(|(index, tri_idx)| {
-            let gd = geometry_data.clone(); // Clone Arc for use in each thread, not the data itself
-    
-            // Perform locked update
-            let mut gd_lock = gd.lock().unwrap();
-            gd_lock.add_triangle(index, &self.points, tri_idx, types);
-        });
-    
-        self.geometry_data = Arc::try_unwrap(geometry_data).unwrap().into_inner().unwrap();
+    pub fn preprocess(&mut self, types: usize, parallel: bool) {
+        if parallel {
+
+            let geometry_data = Arc::new(Mutex::new(GeometryData::new()));
+        
+            self.triangulation.par_chunks(3).enumerate().for_each(|(index, tri_idx)| {
+                let gd = geometry_data.clone(); // Clone Arc for use in each thread, not the data itself
+        
+                // Perform locked update
+                let mut gd_lock = gd.lock().unwrap();
+                gd_lock.add_triangle(index, &self.points, tri_idx, types);
+            });
+        
+            self.geometry_data = Arc::try_unwrap(geometry_data).unwrap().into_inner().unwrap();
+        } else {
+
+            self.triangulation.chunks(3).enumerate().for_each(|(index, tri_idx)| {
+                self.geometry_data.add_triangle(index, &self.points, tri_idx, types);
+            });
+
+        }
     }
 
     pub fn delfin(