YDL file extension - Powerflip YAODL 3D image file
What is ydl file? How to open ydl files?
File type specification:
The YDL file extension is related to YAODL (Yet Another Object Description Language) and us used for a format for three-dimensional models that supports NURBS, polygons, and quad-meshes, and object properties such as facet or vertex normals, texture coordinates, and object, facet and vertex colors. It also supports hierarchical models, coordinate transformations (rotations, scales, translations), and instancing (using the same data more than once).
It is not an official data format of Silicon Graphics, it is just a data format created for the powerflip demo program.