Blender Underground

Away from the watchful eye of The Man
It is currently Thu Jun 20, 2013 3:20 am

All times are UTC - 8 hours




Post new topic Reply to topic  [ 29 posts ]  Go to page 1, 2  Next
Author Message
 Post subject: Knife cuts in 2.58
PostPosted: Thu Jul 28, 2011 9:43 pm 
Offline
Operative

Joined: Fri Apr 24, 2009 7:03 pm
Posts: 502
Hi everyone, I;'m back.

Profnull, great new avatar, I liked dalek zek.

I'm going to try redoing my destroyer (I'm never gonna get it done, this heatwave and other htings are killing my energy.) and I want to eliminate that damn spreading in the ribs. The only two ways I see to do it are making the panels with knife cuts or sliding each single vert over manually to keep the ribs straight.

I'm trying knife cuts first. ANy suggestions?


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Thu Jul 28, 2011 11:12 pm 
Offline
Specialist
User avatar

Joined: Mon Jan 12, 2009 8:20 pm
Posts: 1843
Location: Australia
Hi, good to see you back. :D

Hang on, you want what?
To get all the "ribs" equal spacing apart?
In what way ? Show me a pic of what you've got and what you want.


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Fri Jul 29, 2011 12:51 am 
Offline
Operative

Joined: Fri Apr 24, 2009 7:03 pm
Posts: 502
Well, you know that b=destroyer I was working on in earlier posts, with the ribs down the side that flared out as they got down to the bottom, I wanted to keep them even but couldn;t do it any way I could see short of moving every vert by hand.

I was thinking knife cutting the panels into the hull might help.

http://farm5.static.flickr.com/4077/540 ... d789_b.jpg


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Fri Jul 29, 2011 2:48 am 
Offline
Specialist
User avatar

Joined: Mon Jan 12, 2009 8:20 pm
Posts: 1843
Location: Australia
you would need the 2.49 knife for that or maybe a retopo type operation.
Or if I assume that you want to start again, start with a UVsphere. Rotate it 90 degrees so that the end point points forward.
Now scale it so that the sphere matches the outline of your nose section.
That will not give you a perfectly equal series of ribs but it will give a set of parallel ones.
If you try to make them all exactly equidistant, when you get to the end things will get messy, you may lose the shape unless you have a lot of ribs.

Still if you have the shape that you want it is easy to copy it with a cut sphere provided that you don't distort the circles while you are changing the shape, if you get what I mean. For each circle, as long as you have tow points directly across from each other you can select them and put your cursor there and scale the ring (or part ring ) up or down.

I'll show you an example of what I mean. Back shortly.


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Fri Jul 29, 2011 3:19 am 
Offline
Specialist
User avatar

Joined: Mon Jan 12, 2009 8:20 pm
Posts: 1843
Location: Australia
Okay, here is the zipped file:
http://www.4shared.com/file/wLSrG0P9/spheretreatment2blend.html
It's made in 2.49 but that won't matter.
In short, any section of a sphere mesh can be scaled to match another.

If you open the file,
Layer 2 is (roughly) the shape you have used as the base of the ship nose.
Layer 3 is exactly the same overall shape made from a sphere rotated 90 degrees.
Layer 4 is my guides to get the ribs equal
Layer 1 is my result - I started with the shape on layer 3 and snapped the loops of verts to the rib positions.
then I used the mirror mod to add the bottom half of the shape so that I could then look at both layers 1 and 3 in transparent view and scale up the loops of the shape to match the size of the layer 3 shape. Get the idea?
When you apply subsurf to the final shape it looks good except for the end: maybe you should apply the SS mod, then clean up the end to match what you want with more loops to get a nice smooth end.
Does that all make sense?


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Fri Jul 29, 2011 3:02 pm 
Offline
Operative

Joined: Fri Apr 24, 2009 7:03 pm
Posts: 502
NO! I AM NOT STARTING OVER!!!! I'M SICK OF STARTING OVER!!!!!!! I'm backtracking to a saved version before I detailed the hull, and try to do it in a way that doesn't produce endless doubles or flared ribs. Maybe I'd edge slide the damn verts manually....


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Fri Jul 29, 2011 3:07 pm 
Offline
Operative

Joined: Fri Apr 24, 2009 7:03 pm
Posts: 502
Profnull wrote:
Okay, here is the zipped file:
http://www.4shared.com/file/wLSrG0P9/spheretreatment2blend.html
It's made in 2.49 but that won't matter.
In short, any section of a sphere mesh can be scaled to match another.

If you open the file,
Layer 2 is (roughly) the shape you have used as the base of the ship nose.
Layer 3 is exactly the same overall shape made from a sphere rotated 90 degrees.
Layer 4 is my guides to get the ribs equal
Layer 1 is my result - I started with the shape on layer 3 and snapped the loops of verts to the rib positions.
then I used the mirror mod to add the bottom half of the shape so that I could then look at both layers 1 and 3 in transparent view and scale up the loops of the shape to match the size of the layer 3 shape. Get the idea?
When you apply subsurf to the final shape it looks good except for the end: maybe you should apply the SS mod, then clean up the end to match what you want with more loops to get a nice smooth end.
Does that all make sense?



I downed it but you're way ahead of my on blender. I'm trying to get the ribe even on an earlier version. The thing is I've used edge loops to add the lines for the section,s which adds a lot of verts I'd like to try cutting the penels into the hull to minimize verets, and was hoping the knife cut tool would do it, but it seems not to do perfectly straight cutds anymore.


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Fri Jul 29, 2011 3:24 pm 
Offline
Specialist
User avatar

Joined: Mon Jan 12, 2009 8:20 pm
Posts: 1843
Location: Australia
Quote:
"it seems not to do perfectly straight cuts anymore."
That's what I complained about elsewhere on BU.
The only way to do those kind of cuts is to open the file in 2.49 and cut there. I can only hope it is fixed in a later version. :roll:

I gave you that file so you can see the ideas and hopefully use them in your own modelling.

Note that if you have two layers visible at once in wireframe, you can adjust one mesh to match the shape of the other.
Just take it step by step: if the rib spacing is critical, get that right first, (even with a cylinder?) then adjust the size of the rings to match the shape so it is all smooth.
I'm only here to help. :wink:


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Fri Jul 29, 2011 7:11 pm 
Offline
Operative

Joined: Fri Apr 24, 2009 7:03 pm
Posts: 502
BTW, is that an actual pic of dalek zek or sis you model it?
And do you hate the nighty morphin power daleks ? I do.

Another issue I had was that I know what I did to make that forward hull but could not seem to duplicate it exactly, I tried ad just could not get the exact curvy no matter how much I scaled and whatnot. That was a big reason for me not to start over. I mean, I remember the steps I took, the various things I did, but I can;t seem to duplicate it exactl;y.


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Fri Jul 29, 2011 7:29 pm 
Offline
Specialist
User avatar

Joined: Mon Jan 12, 2009 8:20 pm
Posts: 1843
Location: Australia
The pic is off the net. Not sure where now, it wasn't important.

With the shape, is it REALLY important to have it EXACTLY the same as before?
After all, it is Your ship. Unless it MUST be that shape to fit a matching shape ( e.g. the front end of Thunderbird 5 :D ) You should have no trouble adjusting it - the only possible issue is joining it to the rest of the ship.


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Fri Jul 29, 2011 9:42 pm 
Offline
Operative

Joined: Fri Apr 24, 2009 7:03 pm
Posts: 502
Profnull wrote:
The pic is off the net. Not sure where now, it wasn't important.

With the shape, is it REALLY important to have it EXACTLY the same as before?
After all, it is Your ship. Unless it MUST be that shape to fit a matching shape ( e.g. the front end of Thunderbird 5 :D ) You should have no trouble adjusting it - the only possible issue is joining it to the rest of the ship.

I've never seem, but heard of , thunferbirds, so I didn;t copy it.

As to the shapy, it's pretty much want I want, it pisses me off I catn't remember how I did it. I think I ended up cuting the nose off, using a spin extrude and then scaling it forward but I can;t remember how. It just pisses me off I can;t duplicate it.


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Sun Aug 14, 2011 11:59 pm 
Offline
Informant

Joined: Sun Aug 14, 2011 11:44 pm
Posts: 2
BTW, I'm the Op here, lost my password and can't seem to find it, don;t have the email I signed up under. I haven;t touched blender for a while, damn heatwave made me too lethargic to do much.

Be seeing you.


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Mon Aug 15, 2011 11:36 am 
Offline
Director
User avatar

Joined: Thu Sep 06, 2007 8:17 am
Posts: 5144
Location: West Virginia, USA
I sent you a PM. Have a great day... :)

_________________
Life is an illusion....It's the magician you have to worry about!


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Tue Aug 23, 2011 6:33 am 
Offline
Informant

Joined: Tue Aug 23, 2011 6:28 am
Posts: 1
Try this link to the Fake Knife Cut for Blender 2.5:
http://projects.blender.org/tracker/?fu ... 3&atid=468

Works similar to 2.49, there is a toolbar side menu for the exact, multi cut, etc.


Top
 Profile  
 
 Post subject: Re: Knife cuts in 2.58
PostPosted: Tue Aug 23, 2011 3:08 pm 
Offline
Agent
User avatar

Joined: Sun Apr 12, 2009 3:51 pm
Posts: 522
Location: Michigan
(*cough*)

viewtopic.php?p=57933#p57933

_________________
Image

WARNING: I am armed with an apocalypse gun, but I am out of ammo.


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 29 posts ]  Go to page 1, 2  Next

All times are UTC - 8 hours


Who is online

Users browsing this forum: Google [Bot] and 3 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
Jump to:  
cron
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group
Translated by Xaphos © 2007, 2008, 2009 phpBB.fr