So here we are with my first challenge.  I am making Hyperion, a vector graphics editor using Athens , so far I have a nice line with several segments, I have added nice handlers to allow me to move the points (start and end of each segment) of the line around with the mouse, but now I want each time I click on a segment itself to create a new point.This way I will create more points with the mouse and bring more detail to the shape of the line / path. 

In order to do that I will have to check that the line passes through a specific pixel. Or to be more correct that the place that mouse has clicked is where my path passes through. How I do that ? Can Athens do that ? Can athens tell me which pixels my path passes through ? 

At first I thought to return the Athens surface as a Form but the form will give me back the colors of each pixel on a specific place, but that does not guarantee  that my line / path passes through those pixels.