Re: [brlcad-devel] Online Geometry Viewer

[Christopher S. M. <br...@ma...>]

On Jun 29, 2013, at 5:39 PM, Harmanpreet Singh wrote:

> Didn't found anything specific for direct visualization of NURBS
> geometry. However, three.js developers have implemented NURBS curves
> and surfaces to work with three.js but I'm not sure whether it is
> currently useful for us, may be in future.

There's also WebGLU.  System GLU has limited support for visualizing trimmed NURBS.  You could also directly convert NURBS to Bezier surface patches, which you'll find a lot more support for:

http://www.ibiblio.org/e-notes/Splines/Intro.htm

> However, three.js has support for importing OBJ files. Check:
> https://github.com/mrdoob/three.js/wiki/Features

They almost certainly do not support NURBS OBJ files.  Rhino3D is one of the few tools I know of that implements support for NURBS OBJ files.  Polygonal OBJ files (such as the ones we generate with g-obj) are not useful because you don't (yet) have the ability to robustly get polygons to work with until you have facetize command support.

Cheers!
Sean