Of achieving algorithm about the restrictive four forks tree, is very good Oh!
File list:
cdt
..\cdt.C
..\cdt.h
..\common.h
..\dllist.h
..\draw.C
..\geom2d.h
..\irisglCDT.c
..\LICENSE
..\Makefile
..\openglCDT.C
..\quadedge.C
..\quadedge.h
..\README