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View Full Version : Newbie to lightwave.. stuck on a modeling project..



onimusqa
06-16-2004, 05:12 PM
Hey guys,

I'm new to Lightwave.. and running into some trouble on this modeling project. I'm trying to make a ring with holes on the side.. as you can see in the image.. The holes were made using boolean drill.

http://www.members.aol.com/nohnstt/picture1.jpg

When I convert the ring to subpatch for a smoother effect.. not all polygons are converted and I'm left with an open seam....

http://www.members.aol.com/nohnstt/picture4.jpg

The non converted polygon is the one you see higlighted in yellow.

http://www.members.aol.com/nohnstt/picture3.jpg


It's obviously a multipoint polygon. I tried to break the polygon down with the "triple" effect but it's not much help either becuase in subpatch mode.. I can still see small creases. What's the best way to do this? Should I start out with a lot more polygons than what I have now and not use subpatch at all?

Your help is greatly appreciated. Thanks.

hrgiger
06-16-2004, 05:37 PM
You can do one of two things.

You can make your object without the holes, turn subpatch on, and then freeze your mesh at a high resolution. Now you can run your booleans.

Or two, you have to plan out ahead and build the area around the holes you want to make or you have to rebuild the areas around the boolean before you can convert to subpatch. If you look at this link, I have a small tutorial on how to make your booleans work with a subpatch model: http://vbulletin.newtek.com/showthread.php?s=&threadid=11372&perpage=15&highlight=mosquito&pagenumber=2

Dodgy
06-16-2004, 05:40 PM
Try edgebeveling the edge of the hole too, as this will help with the creases. Convert some of the tripolys around it to quads as well.

objuan
06-16-2004, 05:52 PM
Couple things,

1. When you use boolean it makes 2 separate objects, your outer ring, and the the hole you cut out of it, which have overlapping points so they look like 1 object. When you turn on sub patching it doesn't think of those polys as being connected so you might get weird seams.

This is easly dealt with by doing a merge points 'm' after the boolean.

2. Subpatch doesn't like the more than 4 point poly that are created by the boolean. In Poly selection mode you can select all of the ">4 Vertices" in the "Polygon Statistics" window, and then Triple them, but that doesn't always give you the results you want once you sub patch your object.

For the object your working on now, I would probably build some rounding on to the ends of your boolean holes before the boolean, and forget the subpatching.

objuan
06-16-2004, 05:54 PM
Man, you guys are fast, no one had responded to this when I started to write mine...

onimusqa
06-19-2004, 05:17 PM
Hey guys,

Thank you very much for the help. Especially Hrgiger, I went according to your tutorial and it works perfect for me.

The finish render is below. It's a relief valve for a portable oxygen chamber. Thanks a lot. You guys are great help!

http://www.members.aol.com/nohnstt/relief.jpg