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A standalone half-edge data structure in python with no dependencies other than numpy. Also, in a separate file, a simple OpenGL viewer.

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Author: Yotam Gingold <yotam (strudel) yotamgingold.com> License: Public Domain. (I, Yotam Gingold, the author, release this code into the public domain.) GitHub: https://github.com/yig/trimesh

trimesh.py: A python half-edge data structure for a triangle mesh that can - handle boundaries (the first outgoing halfedge at a vertex is always a boundary halfedge) (and the last outgoing halfedge is always the opposite of a boundary halfedge)) - save/load itself to/from OBJ format - save itself to OFF format

Loading:
    import trimesh
    mesh = trimesh.TriMesh.FromOBJ_FileName( "cube.obj" )

trimesh_viewer.py: A very simple GLUT viewer for TriMesh objects. Keys are: - w: toggle edges (wireframe) - r: reset the view - c: captures current window backbuffer into "screen-capture-

-<number>.png" - : toggle fullscreen - q: quit <p>GLUTWindow.py: A very simple class wrapping GLUT. Keys are: - c: captures current window backbuffer into "screen-capture-</p><title>-<number>.png" - : toggle fullscreen - q: quit <p>Known issues: trimesh.TriMesh doesn't save or load normals. trimesh.TriMesh doesn't load texture coordinates (though it does save them). GLUTWindow.GLUTWindow screen capture is broken and needs to be changed to use PIL.</p> <p>Version History: - 2012-01-12: initial release - 2018-01-24: supports Python 3.x</p> </number>