WPF with Vector Graphics, the MainWindow, using MVVM (Part9)

Working on the MainWindow. We are going to use WPF XAML to create a simple Vector Graphics application using MVVM (that is Model View ViewModel) design pattern. Let's get to this! We'll implement ICommand, IValueConverter, and of course INotifyPropertyChanged to support MVVM. Playlist: https://www.youtube.com/watch?v=ETvi1VpgYgY&list=PLL1Xzk9eMwzq7u83Iu5S51yxSvZ6q0HpE