Canvas
Canvas is a tool for quickly rendering objects on screen on the current frame.
Firstly we create it providing renderer as a parameter.
Window window = new Window("Canvas example");
Canvas canvas = new Canvas(window.Graphics.Renderer);
Now, we can use it to some of the default geometries.
window.SetOnFrame(() =>
{
renderer.Clear();
canvas.DrawRectangle(new Vector2(0, 0), new Vector2(800, 600));
});