This code is modified from Optimized Topological Surgery for Unfolding 3D Meshes

• OpenGL&GLUT (Mesa)
• CGAL
• Boost Graph library (BGL)
• GNU Scientific Library (GSL)

On linux

make linux

On Mac

make mac

To unfold the "bunny-128.off" model.

./unfold bunny-128.off

Press the left button for menu. In the "Mesh" window, you can change the viewpoint and distance by dragging the right button and the middle button (vertically), respectively.

[Split]->[Spanning Trees] (or press 's')

for decomposing the mesh into a set of patches with a small number of faces.

[Stitch]->[GA-based stitch] (or press 'o')

for composing a single unfolded patch (or a few unfolded patches).

[Stitch]->[Greedy Remerge]

several times until you can merge them into one single patch.

Shigeo Takahashi Hsiang-Yun Wu, Seow Hui Saw, Chun-Cheng Lin, and Hsu-Chun Yen: "Optimized Topological Surgery for Unfolding 3D Meshes," Computer Graphics Forum (Proceedings of Pacific Graphics 2011), Vol. 30, No. 7, pp. 2077-2086, 2011.