148. Drawing shapes with glow or shadow

By drawing the stroke of a shape multiple times with low opacity we can easily achieve glows and shadows. A simple concept that can produce good looking images. Here some examples: http://hamoid.tumblr.com/post/76579918775/84932-jpg-34758-jpg-and-49862-jpg-as-saved-by

Tip: the darkness of the shadow or glow should not decrease in a linear fashion (like 8, 6, 4, 2) or it will not look too real. That's why I used distances like 2*2, 3*3, 4*4 and 5*5. I'll try to record an episode in the future about linear vs exponential and other interesting curves. Meanwhile here you can find information about curves at: http://www.robertpenner.com/easing/