PDA

View Full Version : Guitar body - need help with curved surface



L0ckz0r
12-06-2010, 04:40 AM
I'm modelling a guitar and I'm wondering how I might best do the body of the guitar. Getting the shape is no problem but the guitar body is actually not flat but it bulges around the pickups.

http://www.google.com.au/imgres?imgurl=http://i70.photobucket.com/albums/i100/gitarian/mimf%2520arch%2520top/4-5.jpg&imgrefurl=http://www.gretsch-talk.com/forum/technical-side-things/24692-rockabilly-archtop.html&usg=__uAbT0C-wNouzEMJ1xeNndbFMG9U=&h=500&w=750&sz=58&hl=en&start=167&sig2=ZHhEDStwjDnnagQT9zvSHg&zoom=1&tbnid=X_nrvq3GznPW8M:&tbnh=162&tbnw=203&ei=1dH8TNL2CoWycefeofQO&prev=/images%3Fq%3Dtops%2Bguitar%2Bcurves%26um%3D1%26hl% 3Den%26safe%3Doff%26biw%3D1280%26bih%3D675%26tbs%3 Disch:10,5333&um=1&itbs=1&iact=hc&vpx=678&vpy=186&dur=1586&hovh=183&hovw=275&tx=136&ty=91&oei=ttH8TPKjAomyvwO9raXKCg&esq=10&page=10&ndsp=17&ved=1t:429,r:14,s:167&biw=1280&bih=675

http://www.google.com.au/imgres?imgurl=http://www.gear4music.com/media/21911/200/preview.jpg&imgrefurl=http://www.foundem.co.uk/M/music-equipment/Guitar/Ibanez/RGA42T.jsp&usg=__Daj6kfRyshpfTWNUBN3p3jcWgY4=&h=200&w=200&sz=8&hl=en&start=87&sig2=ScYX897Ui7moroE_s5niEg&zoom=1&tbnid=yLz8SMOz3N4qmM:&tbnh=158&tbnw=158&ei=Ssv8TMKgA47QccfonfQO&prev=/images%3Fq%3Dguitar%2Bbody%2Bcurve%2Btop%26um%3D1% 26hl%3Den%26safe%3Doff%26biw%3D1280%26bih%3D675%26 tbs%3Disch:10,2600&um=1&itbs=1&iact=hc&vpx=167&vpy=132&dur=2927&hovh=160&hovw=160&tx=66&ty=103&oei=NMv8TNurDIP4vwORrOjJCg&esq=7&page=5&ndsp=20&ved=1t:429,r:14,s:87&biw=1280&bih=675

This image link shows what I mean, see how it bulges and curves around the pickup. How might I model such a curved surface? Curved surfaces are one of my weak points in LW

prometheus
12-06-2010, 06:14 AM
spline patching perhaps, many different ways to do that.

another easier method is to simply box model it or extend polys for the base shape, and use subpatches for the smother looks.

if you simply draw out a box with a few segments, you can use spline guide
in bend mode to create the outline of the object, but you have the shape already I guess, after extrusion simply select the surface that is supposed to have a bulge, and you can use spline guide on that too in bend mode.
lower the spline guideīs curve points to get the overall bulging curve.

Michael

Skonk
12-06-2010, 06:32 AM
As susggested, spline patching is a good option.

Or if you go with the box method then i would suggest starting with a flat plane, with a number of segments in both directions which you can then drag into the correct shape using the drag tool (ctrl + t). Once you have the shape, extrude it and then use dragnet or magnet etc to create the bulges.

This way, you have a mesh made from quads which can be converted to subpatches for a smoother surface.

Starting with a flat plane simplifies the initial shaping task.

prometheus
12-06-2010, 06:39 AM
As susggested, spline patching is a good option.

Or if you go with the box method then i would suggest starting with a flat plane, with a number of segments in both directions which you can then drag into the correct shape using the drag tool (ctrl + t). Once you have the shape, extrude it and then use dragnet or magnet etc to create the bulges.

This way, you have a mesh made from quads which can be converted to subpatches for a smoother surface.

Starting with a flat plane simplifies the initial shaping task.

Exactly..thatīs what I said:)
Almost, except the dragnet and magnet tool, works great too, but for the overall slightly bend surface I would probably use the spline guide.

After extruding the base shape, I would use the knife tool just att the bottom edge of the guitar and also use the knife tool at the edge of the top surface that is supposed to be curved, that way you get sharper edges in the subpatch model.

Michael

prometheus
12-06-2010, 07:33 AM
hereīs a sample pic of how it could look like with something I mentioned above.
forgive me thou..Itīs not exactly a guitar just a base shape to show you.

Michael

JeffrySG
12-06-2010, 08:27 AM
You should be able to come up with something pretty accurate with a subdivision/subpatch model. Just keep the base model as simple as possible to keep it easy to edit.

90562

90563

OnlineRender
12-06-2010, 09:40 AM
Don't you just hate when people can do it blindfolded and within 10 seconds : "show off's " , kiddin , but there concept /workflow is there and would work well :) I would suggest using JeffrySG and others methods .

there is another technique just to throw it into the mixer , use a vector based program and trace around an image of the guitar , export the eps file and bring it into modeller ,from there extract the polys and work it from there .

just another idea , you will find this with LW / most 3D software there is always a workaround .
http://i293.photobucket.com/albums/mm65/katieblackheart/electric-guitar-vector.png

KorbenD
12-06-2010, 12:05 PM
There's a nice (and free, for modeling the body) tutorial available at the link below:

http://simplylightwave.com/movie_pages/tutorial.mhtml?tut_id=6

I've bought a few of their videos. A bit expensive, but I learned a lot from them.

XswampyX
12-06-2010, 01:14 PM
You should be able to come up with something pretty accurate with a subdivision/subpatch model. Just keep the base model as simple as possible to keep it easy to edit.


+1



http://s465.photobucket.com/albums/rr16/xXswampyXx/?action=view&current=20101206_1951_44.mp4

OnlineRender
12-06-2010, 05:03 PM
http://www.turbosquid.com/Search/Index.cfm?keyword=guitar&sort_column=A5&sort_order=asc

colkai
12-07-2010, 02:37 AM
Ooh, much ta! :D