Subdivision surface evaluation using Catmull-Clark and Loop Subdivision Rules
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Latest commit 71934b1 Feb 14, 2013

subd: Mesh subdivision using Catmull-Clark and Loop methods

Will Brown

Run make to compile and ./display_geom [obj file] to run the viewer.

In the viewer, use WASD or the mouse to rotate around two axes, and Q and E to move in and out.


m: Toggle normal interpolation (GL_SMOOTH)
g: Toggle edge drawing
f: Toggle face drawing
n: Toggle vertex normal drawing (must be in vertex normal mode)
v: Toggle vertex drawing (this is very expensive for large meshes)
h: Toggle hull drawing at subdivision levels > 0
c: Toggle cel shading
1: Use face normals only
2: Set vertex normals to be the average of their adjacent face normals
<: Decrease subdivision level
>: Increase subdivision level
z: Toggle rotating animation


  • OpenGL
  • GLUT
  • Eigen (included in repository)