3D scanning
   point cloud, triangulation, watertight, texture
   digitizer
   scanned probe
   triangulation   
   structured light
   multiple views
   time of flight
   opacity
   serial sections
   confocal
   tomography

printing
   materials, time, cost, post-processing
   fused-deposition molding
   multi-jet modeling
   ink-jet binder
   selective laser sintering
   RepRap, Fab@Home, MakerBot, MTM
   digital

file formats
   STL
      ASCII
         solid object_name
            facet normal n1 n2 n3
               outer loop
                  vertex v11 v12 v13
                  vertex v21 v22 v23
                  vertex v31 v32 v33
               endloop
            endfacet
            ...
         endsolid object_name
      binary
         80 byte ASCII header
         32-bit integer number of facets
         50 byte facet records
            32-bit IEEE floats
            normal
            vertices 1,2,3
            2 byte attribute
      right hand rule
      normal unit length (often optional)
   OBJ, 3ds
   X3D, VRML/WRL
   .cad, .math (FRep, BRep, CSG, SAT, lattice, octree)
      castle.cad, castle.math

software
   Art of Illusion
   Blender
   SketchUp
   Rhino Grasshopper
   SolidWorks
   OpenSCAD
   GLC_Player
   Geomagic
   MeshLab
   VTK
   cad_math, math_stl (GUI, decimation coming)

assignment
   * scan an object
      - extra credit: make the scanner
   * design and print an object
      - extra credit: edit and print an object that you scanned
      - extra credit: make the printer

gurus
   3D scanning
      CBA shop section: David Lakatos
      Arch. shop section: Ahmed Helal
   3D printing
      CBA shop section: David Moinina Sengeh
      Arch. shop section: Masoud Akbarzadeh

sections
   CBA shop: John DiFrancesco, Tom Lutz
   Arch. shop: Nick Gelpi, Skylar Tibbits
   CT: Nadya Peek, Kenny Cheung
      Wed: 8PM
      Thu: 6PM