Positions elements relative to other elements.
Calculate the position of an element relative to another element or event. It has also functionality to handle collision within the viewport of a given container. It does not manipulate CSS or DOM, it only calculates values. It is a basic technology to support implementation of tooltips, popups, popovers, scrollspies, sticky navi and many more.
Test dom objects collision and coordinates hitTest.The collision detection works on mobile and on desktop. It manage image and canvas transparency on rencent web browsers.
Determine if an element overlaps/collides another.
jQuery plugin for turtle graphics. Every element is a turtle that can rotate, move, animate, draw, play music, and test for collisions.