I've rewrote my drawing engine to run entirely in javascript and render to an HTML canvas. Since all the control logic was already sketched out and working in Quartz Composer, I simply had to translate that into javascript equivalents.
Instead of drawing with a colored image, this version draws individual pixels for every point along the path with a random scattering algorithm. It does this by computing a random angle and a random distance from the drawing position.
The controls are fairly rough at the moment. I think I'll probably scrap all the HTML inputs and integrate the controls into the drawing surface itself; but this works for testing purposes.
The background is drawn using tips from this great tutorial.
The code is in one HTML file, which you can download and run locally. Get it here, In the folder "Web Development" > Pencil_Drawing.html.
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