各种编程实现的树

d3js : 　　　  http://animateddata.co.uk/lab/d3-tree/#

javaFx2 : 　　https://docs.oracle.com/javafx/2/animations/img/tree-only.jpg

　　　　　　　https://docs.oracle.com/javafx/2/animations/jfxpub-animations.htm

　　　　　　　https://docs.oracle.com/javafx/2/animations/tree-animation.htm#CACCEGFG