Cross-platform falling snow demo on .NET Core and Avalonia UI.

• Install .NET Core SDK
• git clone https://github.com/ptupitsyn/let-it-snow.git
• cd let-it-snow/AvaloniaCoreSnow
• dotnet run

• dotnet tool install dotnet-snow -g
• dotnet-snow

• Move sliders to control speed and snowflake count
• Reset button to start over
• Left mouse button to draw
• Right-click to load an image