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#### 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 three or more control points and press `Enter`.
###### Does the animation of the Chaikin's algorithm start?
##### Press `Escape` to exit the program.
###### 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 three 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 three or more control points and press `Enter`. Then press `Escape` to exit the program.
###### 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?