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ken-van
03-13-2009, 02:56 PM
Hi,
Complete beginner here, so be easy on me please ;)
I've decided to learn 3d modeling and narrowed down my choices to LW 3d or rhino, and need your help to clarify few things:
My purpose: I do video editing and use FinalCut Studio. I'd like to use 3d scanning technology to incorporate models(and modify them) into my workflow. I also like to have the option of rapid prototyping with CAD programs for some other future plans.
Here is the dilemma: Nextengine (scanner company) states that:.... you can quickly export NURBS surfaces or splines that can be lofted in your CAD software.
While i was searching i found that LW doesnt support NURBS....And rhino does. I want to go with LW 3d though simply because I like what i saw so far...
Here is my question. I read about NURBS but didnt completely get what it is. Does lack of NURBS support in LW prevent me doing what I wanna do? I am aware that my worry comes from lack of 3d knowledge. Is there something(?) in LW that does what NURBS do? Are polygons and nurbs the same thing???
Thanks in advance, and i hope my question makes sense...

Tama
03-14-2009, 03:04 AM
If you need the nurbs technology, you aren't going to get it using Lightwave.

TrueArt Support
03-14-2009, 03:48 AM
I read about NURBS but didnt completely get what it is.

http://en.wikipedia.org/wiki/NURBS

I am aware that my worry comes from lack of 3d knowledge.

NURBS are rather for advanced users..

Are polygons and nurbs the same thing???

No, NURBS surface could be f.e. thousand or million of traditional polygons.

NURBS spline is Bezier curve with weight controlling power of control point. These are supported by LWCAD plug-in.

ken-van
03-14-2009, 06:21 AM
First, tx for the answers.
If you need the nurbs technology, you aren't going to get it using Lightwave.
Well i dont know if i am gonna need the nurbs or not for 3d scanning & rapid prototyping(or 3d printing). Perhaps i should get in touch with the related vendors to figure that out. I searched the forum and found some buried information in the old archives about 3d printing. I find it strange that for all the 3d experts & technology exist here there isnt much discussion about 3d printing...
http://en.wikipedia.org/wiki/NURBS
Thanks for the link, after a 2nd reading i got a better idea, and figured alternative options and polygons etc...I believe when i start my self-training things will make sense upon practise. I just dont wanna start a program and jump to another, at this point i'll stick with LW 3d choice..

bbuxton
03-14-2009, 01:26 PM
Nextengine (3D scanner) also outputs to STL, vrml & OBJ (polygonal data)
Lightwave can import OBJ & with a plugin probably the stl & vrml formats too.

Lightwave is an excellent complement to video & vfx. Rhino is more about designing stuff than visualizing.

Digitizing & assembling 3d scans is quite a specialized area, I would suggest having these technologies thoroughly demo'd before parting with the substantial sums required.

BB

erikals
03-15-2009, 12:41 PM
these are good choices, but just what are you digitizing?

rhino is great, but only for making technical models...

ken-van
03-15-2009, 08:10 PM
Thanks for the answers. My previous post disappeared, let's try again...
If you need the nurbs technology, you aren't going to get it using Lightwave.
Part of my search was to find out "if" i am gonna need NURBS or not. More i read i think i might be able to do without them. Things will clarify when i got the answers from vendors, but before contacting them i need to learn more.
Trueart, thanks for the NURBS link, I have a better idea what they are. It brought more questions like 'surface detail quality with polygons' etc, but i dont wanna go into them without having basic knowledge first...I got the bezier explanation too...
Nextengine (3D scanner) also outputs to STL, vrml & OBJ (polygonal data)
Lightwave can import OBJ & with a plugin probably the stl & vrml formats too.
I thought STL would be the universally supported import/export format in 3d programs. Good to know there are plugins to help.
Digitizing & assembling 3d scans is quite a specialized area, I would suggest having these technologies thoroughly demo'd before parting with the substantial sums required.
At this stage to me it still looks easier than creating a complete animated figure from scratch. I think 3d scanner cost is really reasonable comparing to 3d printing machinery... It is even cheaper than many 3d software out there...
Lightwave is an excellent complement to video & vfx. Rhino is more about designing stuff than visualizing.
I need both then, but I dont have desire and resources to learn 2 new software at the moment. Is there something that does both in the same price category?

these are good choices, but just what are you digitizing?
Mostly toys; figures(Marvel etc) especially... Imagine how much expertise would be necessary to model(?) one...

erikals
03-15-2009, 09:05 PM
Lightwave is the way to go for this, drop Rhino.
alternatively look at Modo.

if you go for Lightwave, you will want to buy the Retopology plugin too,
very good plugin, i use it over here...

http://www.trueart.pl/?URIType=Directory&URI=Products/Plug-Ins/EasyRetopology
http://www2.trueart.pl/Products/Plug-Ins/EasyRetopology/Graphics/Movies/EasyRetopology_1.mov
http://www2.trueart.pl/Products/Plug-Ins/EasyRetopology/Graphics/Movies/EasyRetopology_2.mov

TrueArt Support
03-15-2009, 09:19 PM
if you go for Lightwave, you will want to buy the Retopology plugin too,
very good plugin, i use it over here...


Ouch.. I have much better one than EasyRetopology! :) :)
EasyMesh http://easymesh.trueart.pl
EasySplit http://easysplit.trueart.pl
EasySpline http://www.easyspline.com
Especially EasySpline is interesting position for somebody who wants simulate NURBS in LW.

erikals
03-15-2009, 09:24 PM
yes, but for remake of scanned objects using cloudpoints from a digitizer i'd say the Retopology tool is the way to go. :)

hehe, the "fight" over which of your plugins to use,... :D

ken-van
03-16-2009, 01:37 AM
TrueArt & Erik,
Thanks for the plugin links, just watched the few sample videos.
I am sure they will be handy when I need them, naturally my priority will be to learn the LW basics first.

erikals
03-16-2009, 01:54 AM
for LW video tutorials, see my signature ;)

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