lib3ds is a free ANSI-C library for working with the popular "3ds" 3D model
Supported platforms include GNU (autoconf, automake, libtool, make, GCC) on
Unix and Cygwin, and MS Visual C++ 6.0. lib3ds loads and saves Atmosphere
settings, Background settings, Shadow map settings, Viewport setting,
Materials, Cameras, Lights, Meshes, Hierarchy, Animation keyframes. It also
contains useful matrix, vector and quaternion mathematics tools. lib3ds
usually integrates well with OpenGL. In addition, some diagnostic and
conversion tools are included.