public/subjects/chaikin

Chaikin

Instructions

Implement the Chaikin's algorithm step by step in an animation.

The objective is to create a canvas where the user will be able to draw 1 or more points on it, and then the screen will play an animation of each step that is taken to obtain the final result of a drawn curve. The animation must play for 7 steps and then it must restart.

It is mandatory to use the Chaikin's algorithm.

You can see how the application should work here.

• Functionality:

  • The canvas should receive input from the mouse:

    • The user of the program should be able to use the left button to select the control point for the Chaikin's algorithm.

  • The selected points must be visible in the canvas, so you will have to draw a small circle surrounding the selected points.

  • After pressing Enter the program should start the animation of the steps until reaching the 7th step of the Chaikin's algorithm. After the 7th step the program must restart.

  • If the canvas only has only one control point, the program must only present that point and do no change at all.

  • If the canvas has only two control points, the program must draw a straight line.

  • Pressing Escape should quit the window.

Note

You are free to use any library to create and handle windows, rendering, keyboard and mouse events.

Bonus

• Add the ability to clear the screen and add new control points.

• Make it possible to drag the control points in real time.