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Modelling & Animations Everything but Static Objects |
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Thread Tools | Display Modes |
2014-07-11, 04:13 | #71 |
Retired PR Developer
Join Date: Jun 2006
Posts: 3,835
Japan
Location: Tokyo
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
Yeah it was just an example, obviously it would be mirrored so you wouldn't use it where you needed unique text, but on the lower parts or areas that could share normals it wouldn't be an issue.
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2014-07-11, 12:01 | #72 |
Retired PR Developer
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
So if I get it right, unless I planned to put a text on it, I can make the UVs getting any shape I want (but not too much distorted according to what lucky says). However, what if 2 linked UVs (linked on the 3D plan) have quite a different size ? Will it matter ?
Cause what I did is that once textool packed it for me, I randomly took any small UVs I could find and grew it in order to fill all the holes, without caring if it's gonna be much bigger than its neighbor. But then if it doesn't matter, where's the point of doing that ? What problems can the big holes cause ? Or, what should they Really be used for ? Only to grow big UVs ? But then again if I can't really deform them there will still be a lot of unused space. Textool packing doesn't make a perfect square though, so I understand I need to move small UVs in order to make it look like a square (so that I can grow the whole thing as much as I can). But after that I still really don't know why I should fill the holes. |
2014-07-11, 20:51 | #73 |
Join Date: Mar 2010
Posts: 1,413
Czech Republic
Location: Prague
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
Are you packing everything (Launcher + grenade) into one texture sheet?
As I said before, lets first Unwrap it, and then pack it. |
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2014-07-14, 09:34 | #74 |
Retired PR Developer
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
Here's the unwrap :
Few views of the model with a textool's texture : http://i.imgur.com/CUkedDT.jpg http://i.imgur.com/myg0Aru.jpg http://i.imgur.com/MMgcJ2K.jpg http://i.imgur.com/8KYYqpS.jpg http://i.imgur.com/2zZ4jno.jpg http://i.imgur.com/0eVnQRA.jpg |
Last edited by KaB; 2014-07-14 at 10:12..
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2014-07-14, 10:25 | #75 |
Retired PR Developer
Join Date: Jun 2006
Posts: 3,835
Japan
Location: Tokyo
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
That's a decent start, but there's a fair amount of wasted space. With some reorganization you could potential upscale everything by about 10-20% and get a better resolution on your textures
Here's a pretty bad example because I don't have too many small pieces, which makes it hard to fill in the gaps from the awkward shaped items. Your one has a bunch of rectangles which should be much easier to work with Also on pics like this one, upscale the UVs to check the square sizes a bit better. http://i.imgur.com/CUkedDT.jpg |
2014-07-14, 10:54 | #76 | |
Retired PR Developer
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
Yea I didn't pack it properly yet.
Quote:
http://i.imgur.com/2jZzkbz.jpg http://i.imgur.com/I5JsoVr.jpg | |
2014-07-14, 11:02 | #77 |
Join Date: Mar 2010
Posts: 1,413
Czech Republic
Location: Prague
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
Unwrap looking pretty solid, here are some things I noted
EDIT: Also, try and place your UV seams on the circular shapes so they are hidden from the most common POV. (for example here you will mostly be looking at the thing from about the same POV as the image above, so you want to hide as many seams as you can from this POV. Another thing is that I dont think the placement of the seam on teh tip of the grenade is too fortunate, starting to think that maybe doing the whole tip with a cylindrical UV might be the best option, is the texture is done right the distortion on teh tip wont be noticable and you will have no seams there, plus you will save some UV space. So basically give it another try and try to do it like you did it before, yeah I know I said that was the bad way to do it |
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2014-07-14, 11:51 | #78 |
Retired PR Developer
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
For the hard edges you mean I should break those two rectangles :
Should the three ones from the U stay together ? For the planar, it'll look like this then, is it alright ? : That's how it currently looks like : http://i.imgur.com/yQ6rau2.jpg |
Last edited by KaB; 2014-07-14 at 12:32..
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2014-07-14, 13:04 | #79 |
Join Date: Mar 2010
Posts: 1,413
Czech Republic
Location: Prague
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
You need to move the central vertex of that cone a bit back, that way the cone will be shorter and the UVs wont be as distorted when you look at it from the side. But yes, the planar UV will still be better, mainly as it will save you a bunch of UV space.
Whereever you have a hard edge on the model (hard edge = border between two smoothing groups) You need to separate the UVs, too. Otherwise the normals will look bad there, as normal map on one side of the hard edge will have totally different color complared to the normal map on other side of the hard edge. |
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2014-07-14, 14:06 | #80 | |
Retired PR Developer
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Re: [Weapon] M7 Grenade Launcher (+ M9A1 rifle grenade)
Quote:
I can't be sure about the cause of these black lines (there weren't so much of them though), however this made me deleting seams on a lot of hard edges, like on these ones : http://i.imgur.com/407zzdP.jpg http://i.imgur.com/BJ7m9ii.jpg http://i.imgur.com/bPefUvw.jpg http://i.imgur.com/DhG2Asd.jpg http://i.imgur.com/zoRNL4e.jpg I did this thinking this would fix the black line thing, but also save some work for the texturer, as all those connected faces have more or less the same texture IRL (obvious). I could enlarge the smooth groups for these parts. But then it's going to look terrible (large smooth groups look definitely not good, but I suppose you know this already). Example : http://i.imgur.com/1fEQ5dM.jpg What I mean is that the "seams on hard edges" rule sounds pretty weird to me. | |
Last edited by KaB; 2014-07-14 at 14:15..
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Tags |
grenade, launcher, m9a1, rifle, weapon |
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