Just click the green flag and watch! Press S to go from stationary mode to striding mode. Press C to change the color scheme. Press B to change the backdrop. Press space to show or hide the relative X and Y coordinates of the hip, knee, fibula, ankle, heel, and toe.
This animation is based on biometric data collected from an actual human stride: http://www.dustynrobots.com/academia/research/winters-gait-data-in-excel-form/ Points include the hip, knee, fibula, ankle, heel, metatarsal, and toe. The stationary cycle has 68 data points. The striding cycle has 106. Music: I Walk the Line, Johnny Cash, 1957