Watch the design constantly change as you move your cursor across the sketch.  Move horizontally, vertically, round in circles, or keep it random.

You can edit the code to change how it looks.  

For ideas to try look for the  ▶ icon or the highlighted '//try' sections.  For example you can change:

• The colour of the line
• The number of symmetrical lines 
• The rate at which the line fades

or anything else that you choose!

Simply make the change to the code and press Run. 

Want to go back to the original code? Easy, just press Reset.

Create this design from scratch!