CGTalk - Maya 2009 NURBS _ loft & merge(?)

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maxfireball

12-16-2009, 03:27 AM

Hi all the Maya gurus! I'm very new to Maya. Currently I'm working on this project using Maya and I have the following two problems. Really appreicate if you could help me out with this:

1. In the NURBS surface context, refer to the opening of the extruded tube (http://www.flickr.com/photos/21514672@N02/4187740268/ (http://www.flickr.com/photos/21514672@N02/4187740268/)), how to close/seal/cap the circular opening? This problem is equivalent to how to turn a circle (curve) to a circular patch (surface), as shown here (http://www.flickr.com/photos/21514672@N02/4186978613/in/photostream/ (http://www.flickr.com/photos/21514672@N02/4186978613/in/photostream/)). (*Loft works when there are two curves so that a surface patch can be built between, in this case, the circle is considered one curve

2. Generally in the NURBS surface context, I have a problem on how to merge/combine different curves/surfaces into one single unit curve/surface/object, such that when the merged/combined unit is selected and moved by Translation, it will move as a whole and the components will not fall apart. (or there is such a merge/combine function in the first place?)

For example, 4 planes are created (create -> NURBS primitives -> Plane), the four sides of the upper two planes are lofted and so are the four sides of lower two (http://www.flickr.com/photos/21514672@N02/4187740528/in/photostream/ (http://www.flickr.com/photos/21514672@N02/4187740528/in/photostream/)) . Now they are one box on top of the other (http://www.flickr.com/photos/21514672@N02/4187740718/in/photostream/ (http://www.flickr.com/photos/21514672@N02/4187740718/in/photostream/)). Then I use Boolean operations (Edit NURBS -> Booleans -> Union Tool) to merge/combine the two boxes. I thought now the two boxes are one single object and can move as one piece, then I ‘select all’ and do a translation (MEL: move -r 2 2 2), they just fall apart as shown (http://www.flickr.com/photos/21514672@N02/4186979101/in/photostream/ (http://www.flickr.com/photos/21514672@N02/4186979101/in/photostream/)

Enlighten me please!

Harthorg

12-21-2009, 02:34 AM

Hi.

For closing the extuded circle you should use Trim instead of loft.

Personally I dont really use NURBS for modeling unless I'm modelling something very basic and round in shape. Such as a vase or bowl.

To make all your Nurbs Surfaces move together, you will probably need to delete the history, as the surfaces will still be connected to your curves and if you move the surfaces and the curves together the surfaces will be moving twice. Once from the curve moving and once from the actual suface moving.

Try deleting the history of the surfaces then either grouping them or attaching them together.

Hope this helps.

KevBoy

12-21-2009, 04:31 PM

I think if you want to get serious with NURBS, look into Maya's seperated twin: Alias Studiotools

phix314

12-24-2009, 05:59 AM

I think if you want to get serious with NURBS, look into Maya's seperated twin: Alias Studiotools

Word. Make take some time, but it's about the end-all of model-anything IMO.

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