Modifying NURBS

# 1 09-02-2003 , 04:48 AM

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I've never used NURBS before and I'm trying to make a simple object.

I'm trying to do some simple things but can't figure out how. I read the help files and MAYA tuts, but couldn't understand what they were doing. So please help me.

There's two things i'm trying to do:
1) Round the corners of the three inner cubes.
2) Then subtract out the three inner cubes from the big cube. To make holes.

--- All Objects are NURBS ---

- Matt

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# 2 09-02-2003 , 04:49 AM

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Forgot this

- Matt

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# 3 09-02-2003 , 05:10 AM

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I'm glad you're trying to learn nurbs, but I think this particular object can be better modeled in Polys. It can be difficult to make holes in nurbs sometimes, but it can be done. I myself don't know how to, but here's how you do it in polygons.

1) your boxes.
2) select all faces for the top box and subdivide twice.
3) select the perimeter faces.
4) Choose polygons>Smooth.
5) Duplicate your box.
6) select all three top boxes and choose Polygons>Combine.
7) Select the big box first, then the three boxes. Choose Polygons>Boolean>Difference.

I hope this helps a little. Who knows, you might already know how to do this with polygons, but are experimenting with nurbs. Maybe someone can give you the answer on how to do this all with nurbs.

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# 4 09-02-2003 , 05:45 AM

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Tnanks a Lot DARKWARE. user added image

That did help.

But is there a way to increase the radius of the corners?

Also, I'm also still learning polygons. I was using NURBS b/c I was able to adjust the radius of the curves and couldn't figure it out with the polygon.

Anyway, That was Exceptional Help. user added image

Thanks

- Matt

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# 5 09-02-2003 , 06:00 AM

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I'm not sure what you mean by increase the radius. Do you want the smoothed edges to come out more? You can accomplish this by moving some edge vertices outward right before you smooth.

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# 6 09-02-2003 , 06:40 AM

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Example:

1) select these vertices.
2) scale them out like this.
3) select these faces.
4) and smooth.
5) select all faces.
6) and smooth again.

The seventh image is a slightly different version that has more roundness to it. I was able to do this by subdividing the faces select in image 3, then scaling the newly created vertices outward, which took some time. After I scaled them out, I used snap to grid to align them perfectly, then smoothed the outside faces. (as done in image 3 and 4) After that, I smoothed the whole object and got what you see in image 7. Anyway, like I said, I'm not sure if this is what you mean. Hope this helps some.

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# 7 09-02-2003 , 06:52 AM

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That example works. but if i subtract that area from the main ploy, then the indents stay.

What I'm looking for is the sides to be smooth also.

Example:
-This is what I have now.(Was done using NURBS. I don't know how to subtract objects using NURBS.)

BEFORE

- Matt

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# 8 09-02-2003 , 06:53 AM

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AFTER

(Notice how the curve is larger.)

- Matt

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# 9 09-02-2003 , 07:16 AM

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I was working on creating bricks and concrete blocks. I was just playing around and curious about how to do it.

Here's what I have done so far.

- Matt

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# 10 09-02-2003 , 07:18 AM

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Any suggestions on texturing would be appreciated. user added image

- Matt

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# 11 09-02-2003 , 08:59 AM

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About nurbs-boolean:

If I remember correctly, it is slightly different than the poly-boolean.

I think you must first activate the tool, and THEN pick your two surfaces for the boolean operation.

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