Lines - Joy Walker
This sketch tries to create the effect of hand drawn parallel lines in two congruent rectangles.
The first slider controls how many wiggles. The second, how many lines. The third number is the ratio of wiggle room to the length of the line.
See the original via vjeranski.tumblr here:
http://vjeranski.tumblr.com/post/114493139033/joy-walker-blue-lines-pen-on-cotton-12-5-x
Some of my variations: http://mathhombre.tumblr.com/post/114511192594/lines-after-joy-walker-vjeranski-posted-a
More GeoGebra at bit.ly/mh-ggb