 | | | Boolean after NURBS conversion | Boolean after NURBS conversion 2005-05-18 - By mendrak
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Thanks for the info. I don't have the Conversion Pak, so I didn't try
the STL option.
I did check into the polytools plugin that you mentioned and found it to
be highly useful.
I basically created my NURBS surfaces and created the side, bottom, and
ends of my boat model. Converted them to polygons. Copied the polygons
(one at a time) and flipped all the faces (which was CRITICAL). Unioned
the two polygons together (making sure they were far enough apart that I
could easily select all the points in one face with the rectangle
selection tool). Then I used the Edge Bridge tool from the polytool
toolset, to create the faces between the two identical surfaces. Finally
I selected all the points in one face and slid it close to the other
face to get the "depth" right. While still somewhat tedious it was a lot
better than drawing edges and trying to build faces that way. Once each
component was given depth using this technique I assembled the
components and I had my boat.
I loved the ease of making the interesting curves with the NURBS tools,
and now I have a technique for converting it to a pretty good polygon.
Thanks for all the help from the list.
This modeling effort really stretched what I have tried to do within
Truespace.
JP wrote:
> Hi Mendrak,
>
> If you are still needing a solution there are several ways you can do it.
>
> I would suggest you try exporting your object out as an STL file and them
> import it back in again. Make sure that you have all the surfaces in
> place
> for a closed object. That will use the surface healing built into that
> function to create a single solid object. You will need to have the
> latest
> Conversion Pack to do it.
>
> Another way is to convert just a single surface (no blends or
> stitches) to
> polygons and then use the Add Face tool to fill in the holes. That will
> create a single solid object as well. You might need to add a few edges
> across the holes to get a face to follow along the surface properly.
>
> If you have to use more than one surface then you can Boolean them
> together
> after they are converted to polygons and add faces then across the
> gaps. Depending on the complexity of your geometry that could get
> tedious. However, if you add enough edges (trial and error but try 90
> degrees apart around the object) to get tS to automatically fill in the
> faces then you can triangulate and the new faces will line up flat. Use
> the Add face tool again to fill in any remaining holes and subtract a
> non-interxecting object from the assembly to remove the triangulation.
>
> Yet another way might be to use the Weld Edges Tool from CK Game
> Factory. http://ckgamefactory.hp.infoseek.co.jp/tsxe/polytool.html
> This might work on what you already have. I'm not sure how well that
> will
> work for you but it is worth a shot.
>
> Hope this helps,
>
> Jeff
>
> -
>
>
> At 12:06 PM 5/15/2005, you wrote:
>
>> I was starting down the union path, but it seemed pretty laborious.
>>
>> I'd be very interested in the plugin code you've got. I was sitting
>> here thinking that
>> maybe I'd try and write a plugin that would fix seams between objects in
>> a group,
>> if there wasn't already a tool like that, but maybe the better answer is
>> to convert NURBS planes
>> as a single object.
>>
>> If you have a plugin that is close, I'd definately play with it.
>>
>> Of course the crazy thing is, that I'd spend lots more time
>> writing/debugging code than I would
>> doing the union, but maybe it would help for the next one :-).
>
>
>
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