Functional
Run the program using cargo run.
Does it compile and run without warnings?
Left click on the canvas to set one or more control points.
Does the program allow you to mark these control points?
Can you confirm that the program draws a small circle around the control points in order to identify them?
Left click on the canvas to set one or more control points and press Enter.
Does the animation of the Chaikin's algorithm start?
Press Escape.
Does the program exit without errors?
Start the program and left click on the canvas to set just one control point and press Enter.
Can you confirm that only the control point is shown and nothing changes?
Restart the program and left click on the canvas to set just two control points and press Enter.
Can you confirm that only a straight line was drawn?
Restart the program and left click on the canvas to set one or more control points and press Enter.
Does the animation complete 7 steps before restarting?
Restart the program and left click on the canvas to set one or more control points and press Enter, then press Escape.
Does the program exit without errors?
Start the program and press Enter without selecting any points.
Does the program continue without errors?
After you pressed Enter before selecting points, is it possible to place points without needing to kill the program?
Bonus
+When you pressed Enter without drawing any points, was a message displayed to inform you that you forgot to draw any points?
+Is it possible to clear the screen and add new control points without killing and relaunching the program?
+Is it possible to drag the control points in real time and get a new curve?
