thank you for information, but,
I found the example : http://www.shape5.com/demo/index.php?wp/soul-search
I click on For a tutorial on how to setup this script be sure to view the Vertex Guide on our Tutorials page.
I am directed to this link : http://www.shape5.com/documentation
I think it not explain how to use this feature. I suggest you make videos for people to understand better.
thank you for your reply