DelaunayTriangulation/DelauneyTriangulation/ViewModels/MainWindowViewModel.cs

using System;
using System.Collections.ObjectModel;
using System.ComponentModel;
using CommunityToolkit.Mvvm.ComponentModel;
using DelauneyTriangulation.Models;

namespace DelauneyTriangulation.ViewModels;

public partial class MainWindowViewModel : ViewModelBase
{
    private int _pointCount = 20;
    [ObservableProperty] private double _panX;
    [ObservableProperty] private double _panY;
    [ObservableProperty] private double _zoom = 1.0;
    public double Width { get; set; } = 1280;
    public double Height { get; set; } = 720;

    public int PointCount
    {
        get => _pointCount;
        set
        {
            _pointCount = value;
            OnPropertyChanged(nameof(PointCount));
            GenerateRandomPoints(value);
        }
    }

    public ObservableCollection<Geometries.Point> Points { get; } = new();
    public ObservableCollection<Geometries.Edge> Edges { get; } = new();
    public ObservableCollection<Geometries.Circle> Circles { get; } = new();

    void GenerateRandomPoints(int count)
    {
        Points.Clear();
        var rand = new Random();

        for (var i = 0; i < PointCount; i++)
        {
            var x = rand.NextDouble() * Width;
            var y = rand.NextDouble() * Height;
            Points.Add(new Geometries.Point(x, y));
        }
    }
    
    public MainWindowViewModel()
    {
        GenerateRandomPoints(_pointCount);
    }
}