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 07-10-2004, 03:40 PM #1 Hubbard Registered User   Join Date: May 2004 Location: New York City Posts: 42 Thanks: 0 Thanked 0 Times in 0 Posts Nurbs Cube faces? Why do Nurbs cubes' faces act as seperate objects when in either object or component mode?
 07-10-2004, 03:48 PM #2 cracker Subscriber     Join Date: Jun 2002 Location: England Posts: 168 Thanks: 0 Thanked 0 Times in 0 Posts Basically any Nurbs shape like the sphere is basically a plane just rapped around to make a shape like a sphere Cant remember why there like that they just are!! *note I could be wrong
 07-10-2004, 04:05 PM #3 Hubbard Registered User   Join Date: May 2004 Location: New York City Posts: 42 Thanks: 0 Thanked 0 Times in 0 Posts The Nurbs cube is the only Nurbs shape that has seperated faces. Does a Polygon cube work with bump maps the same way a Nurbs cube does?
 07-10-2004, 04:20 PM #4 cracker Subscriber     Join Date: Jun 2002 Location: England Posts: 168 Thanks: 0 Thanked 0 Times in 0 Posts I've got a book at home that explains all about nurbs, I'll have to read it again to tell you why there like that. Not sure about the bumpmaps?
 07-10-2004, 04:32 PM #5 mtmckinley The Maya Mountain     Join Date: Aug 2002 Location: Seattle, WA Posts: 8,245 Thanks: 1 Thanked 25 Times in 25 Posts A nurbs object is only mathematically capable of having 4 sides (although fairly unstable 3-sided nurbs objects are also possible), therefore, a true Nurbs cube is only possible (that I've found anyway) by taking a Nurbs sphere and manipulating it to be cube-ish in shape (ie. see image). Add more isoparms at the edgs to get sharper geometry. No, polygons have different setups then Nurbs when it comes to texture coordinates (UVs). The positive thing, though, is you can manipulate a polygon's UVs however you want, while a nurbs' object's UVs are pretty much stuck where they are. Attached Thumbnails   __________________ -Mike www.mtmckinley.net The Maya Toolbelt
 07-10-2004, 06:05 PM #6 Hubbard Registered User   Join Date: May 2004 Location: New York City Posts: 42 Thanks: 0 Thanked 0 Times in 0 Posts Thanks mtmckinley, is there a way to weld all the sides together so they can be selected as one object in object mode, possibly an attribute setting?
 07-10-2004, 06:21 PM #7 dark-link Registered User   Join Date: Jul 2003 Location: Surrey BC Posts: 160 Thanks: 0 Thanked 0 Times in 0 Posts you can group all the sides together although they might already be like that by default. select one side of the cube in object mode and hit the up arrow on your keyboard. if it doesn't work then go to the group option and try it again after.
 07-10-2004, 06:25 PM #8 NitroLiq Moderator     Join Date: Nov 2002 Location: New York Posts: 2,133 Thanks: 0 Thanked 10 Times in 9 Posts Or even easier....draw a c-shaped profile curve (the c-shape shouldnt curve but done with stright lines) for the cube and revolve 360 degrees, also linear, and 4 spans (think it's spans...im not in front of maya at the moment)...voila...instant cube. __________________ "Terminat Bora Diem, Terminal Auctor opus."
 08-10-2004, 09:41 AM #9 cracker Subscriber     Join Date: Jun 2002 Location: England Posts: 168 Thanks: 0 Thanked 0 Times in 0 Posts Or even easier just use polys
 08-10-2004, 02:32 PM #10 Hubbard Registered User   Join Date: May 2004 Location: New York City Posts: 42 Thanks: 0 Thanked 0 Times in 0 Posts Yeah, polys seems like the way to go, but do bump maps work on them? Do objects need a more detailed mesh to effectively accept bump maps?
 08-10-2004, 02:37 PM #11 mtmckinley The Maya Mountain     Join Date: Aug 2002 Location: Seattle, WA Posts: 8,245 Thanks: 1 Thanked 25 Times in 25 Posts Yes bump maps work fine on them. You don't necessarily need higher geometry for bumps to look better. __________________ -Mike www.mtmckinley.net The Maya Toolbelt

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