Ripreso direttamente da un link di FB: 3d topology info
ecco un'utile raccolta di riferimenti per la topologia delle forme pubblicati da: Pedro Alpiarça dos Santos
Parte 1
http://4.bp.blogspot.com/-D--SIWiGL8...600/Elbows.png
http://4.bp.blogspot.com/-7Nd8GpzPai...e-sketch-A.png
http://1.bp.blogspot.com/-iWeN9dKbWC...th-octogne.png
http://2.bp.blogspot.com/-yD7dhGVt65...lesv01_web.png
http://1.bp.blogspot.com/-36sTYpLW93..._Display-C.png
http://4.bp.blogspot.com/-jEE0_BUmQx...-Table_v04.png
http://3.bp.blogspot.com/-dCmRHWRrZR...bleSketchA.png
http://2.bp.blogspot.com/-2GPlt3HBo5...hBExtruded.png
http://4.bp.blogspot.com/-nwUksS2Rs0...ar-Arc-Cap.png
http://4.bp.blogspot.com/-tA6KsYCoKB...ntructions.png