From its README:
Coin is a 3D graphics library with a C++ Application Programming
Interface based on the Open Inventor 2.1 API. Open Inventor, for those
who are not familiar with it, is an OpenGL-based, retain-mode, 3D model
scene-graph rendering and interaction library, which has become the de
facto standard graphics library for 3D visualization and visual
simulation software in the scientific and engineering community.
WWW: http://www.coin3d.org/
Roland
jesse@cs.uni-magdeburg.de
'vcs-git' href='https://www.lant.com.tw/~lantw44/git/freebsd-ports-graphics' title='freebsd-ports-graphics Git repository'/>