From f3475011dc52cbcc300d5dc5eaf11562475d0567 Mon Sep 17 00:00:00 2001
From: ti_mo <timo.niemann@campus.tu-berlin.de>
Date: Tue, 21 Oct 2025 22:49:10 +0200
Subject: [PATCH] added circles - default all visible - boundary check to
 Triangulation to not try to triang less than 3 points

---
 .../ViewModels/MainWindowViewModel.cs         | 33 ++++++++++---------
 1 file changed, 18 insertions(+), 15 deletions(-)

diff --git a/DelauneyTriangulation/ViewModels/MainWindowViewModel.cs b/DelauneyTriangulation/ViewModels/MainWindowViewModel.cs
index 19f4cb9..b8501cf 100644
--- a/DelauneyTriangulation/ViewModels/MainWindowViewModel.cs
+++ b/DelauneyTriangulation/ViewModels/MainWindowViewModel.cs
@@ -12,23 +12,26 @@ using CommunityToolkit.Mvvm.ComponentModel;
 using CommunityToolkit.Mvvm.Input;
 using DelaunatorSharp;
 using DelauneyTriangulation.Models;
+using DelauneyTriangulation.Views;
 
 namespace DelauneyTriangulation.ViewModels;
 
 public partial class MainWindowViewModel : ViewModelBase
 {
-    [ObservableProperty] private int _pointCount = 20;
-    [ObservableProperty] private int _minPointDistance = 5;
+    public MainWindow? View { get; set; } = null;
+    [ObservableProperty] private int? _pointCount = 20;
+    [ObservableProperty] private int? _minPointDistance = 5;
     [ObservableProperty] private double _panX;
     [ObservableProperty] private double _panY;
     [ObservableProperty] private double _zoom = 1.0;
     
     [ObservableProperty] private bool _pointsVisible = true;
-    [ObservableProperty] private bool _edgesVisible = false;
-    [ObservableProperty] private bool _circlesVisible = false;
-    [ObservableProperty] private bool _trianglesVisible = false;
+    [ObservableProperty] private bool _edgesVisible = true;
+    [ObservableProperty] private bool _circlesVisible = true;
+    [ObservableProperty] private bool _voronoiVisible = true;
+    [ObservableProperty] private bool _trianglesVisible = true;
     
-    [ObservableProperty] private int _generationDelay = 20;
+    [ObservableProperty] private int? _generationDelay = 20;
     private CancellationTokenSource? _genCts;
     
     public double Width { get; set; } = 1280;
@@ -160,10 +163,10 @@ public partial class MainWindowViewModel : ViewModelBase
     {
         Triangles.Clear();
         Edges.Clear();
+        
+        if(Points.Count < 3) return;
 
-        var pts = Points
-            .Select(p => (DelaunatorSharp.IPoint)new DelaunatorSharp.Point(p.X, p.Y))
-            .ToArray();
+        var pts = Points.Select(p => (DelaunatorSharp.IPoint)new DelaunatorSharp.Point(p.X, p.Y)).ToArray();
 
         var d = new Delaunator(pts);
 
@@ -196,10 +199,9 @@ public partial class MainWindowViewModel : ViewModelBase
             await DelayAsync(ct);
         }
         Edges.Add(new Geometries.Edge(first.X, first.Y, last.X, last.Y));
-
-        /*
+        
         // Voronoi Diagram Extraction
-        foreach (var cell in d.GetVoronoiCellsBasedOnCircumcenters())
+        foreach (var cell in d.GetVoronoiCells())
         {
             ct.ThrowIfCancellationRequested();
             var f = cell.Points[0];
@@ -207,14 +209,15 @@ public partial class MainWindowViewModel : ViewModelBase
             {
                 var s = cell.Points[i];
                 VoronoiDiagram.Add(new Geometries.Edge(f.X, f.Y, s.X, s.Y));
+                Circles.Add(new Geometries.Circle(f.X, f.Y, Points.Min(x => PointDistance(new Geometries.Point(f.X, f.Y), x))));
+                
                 f = s;
                 await DelayAsync(ct);
             }
         }
-        */
     }
 
-    private Task DelayAsync(CancellationToken ct) => GenerationDelay > 0 ? Task.Delay(GenerationDelay, ct) : Task.CompletedTask;
+    private Task DelayAsync(CancellationToken ct) => GenerationDelay > 0 ? Task.Delay(GenerationDelay ?? 0, ct) : Task.CompletedTask;
 
     async Task RunGenerateAsync()
     {
@@ -233,7 +236,7 @@ public partial class MainWindowViewModel : ViewModelBase
         Triangles.Clear();
         VoronoiDiagram.Clear();
         
-        await GenerateRandomPoints(_pointCount, ct);
+        await GenerateRandomPoints(PointCount ?? 20, ct);
         // await ConnectPoints(ct);
         // await Triangulate(ct);
         await DelaunayTriangulateAsync(ct);