I am modifying the "java_point_cloud_example" program to plot a footprint of my past positions.
How can I draw a following line that traces my positions in OpenGL, which is similar to the "Odometry" app that Johnny used in his presentation? http://www.youtube.com/watch?v=yvgPrZNp4So&t=12m29s
Or is the source code of this "Odometry" app available?