Search the archive:
YaBB - Yet another Bulletin Board
 
   
 
Page Index Toggle Pages: 1
Send Topic Print
Help Needed With Windscreens (Read 350 times)
Aug 25th, 2006 at 1:49am

Nav   Offline
Colonel

Posts: 717
*****
 
After years of just downloading the results of other people's hard work, I thought I'd finally try my hand at designing. After four days of wrong turnings I have a reasonable fuselage, wings, and tail and am moving on to detailing. But I've come to a full stop, and can't find the answer to the problem in any of the (otherwise excellent) tutes I'm following.

The first problem is selecting 'polygons' for the cabin windows. The tute I'm following tells me the theory - 'select' the outlines, save them separately, make them transparent, and merge them back in - but I keep falling at the first fence, because I can't work out how to use the 'Select' Tool.

I'm using FSDS and the select tool is a strange arrangement of 'arrow and box.' Whenever I put it anywhere near the window outlines and click/drag, it ignores the things I want it to outline and instead takes quite a big chunk from between the blue 'stringer' lines left over from the fuselage construction. That's no use to me because I wouldn't know where to locate the actual windows (which are small) without being able to refer to my (home-made) backdrop.

Second problem is one I can see looming - the aircraft I'm trying to model is a 1930s DH95 Flamingo, and it has a central pillar and a windscreen that is V-shaped in plan. I really don't know how I'm going to fashion that just by using the fuselage templates.

Any advice would be most welcome - other than 'life's too short, give the whole project up and have another beer,' I've given myself that advice often enough in the last few days!
 
IP Logged
 
Reply #1 - Aug 25th, 2006 at 7:14am

Brett_Henderson   Offline
Colonel
EVERY OUTER MARKER SHOULD
BE AN NDB

Gender: male
Posts: 3593
*****
 
Man.. this really is a learn as you go process.. You almost need to develope a style of modeling that fits the way you see the project, and it's evolution.

The one thing that you'll need to master, is building polys one at a time; by adding points, deleting polys and creating new polys from selected points. It's time consuming and nerve-wracking.. But without GMAX's advanced shaping tools (like soft-select and uniform-select and scale), it's the best way (that I know of) for making your vision show up in form.

The best way for selecting polys, is to click on them (make sure you've hidden the 1/2, or any other part of the model you won't be working on at the time)... OR.. use the arrow keys and "shift+S"..

I never did like making a window by just selecting polys. Since you'll end up making a fuselage "thick walled" anyway; inclucing an edge around the window.. You might as well model the window holes as you go.. and then make the glass as a discrete part.
 
IP Logged
 
Reply #2 - Aug 25th, 2006 at 8:02am

Brett_Henderson   Offline
Colonel
EVERY OUTER MARKER SHOULD
BE AN NDB

Gender: male
Posts: 3593
*****
 
For what it's worth.. Here's a crude representation of how I go about building polys, one at a time, for those intricate, "hard to shape" parts of a model..

...
 
IP Logged
 
Reply #3 - Aug 26th, 2006 at 2:27am

gryshnak   Offline
Colonel
Low flying is when you
have to dodge the trees
Hull. Yorkshire, UK

Gender: male
Posts: 1053
*****
 
First, congratulations on taking the plunge into designing!  Your first plane will probably take ages, and you won't be completely satisfied with the result.  But you'll learn so much from doing it that your next design will be much better, and ten times faster.

If you're selecting things other than the bits you want, go back to Part mode and select those other annoying bits first (cycle through them with the left/right arrow keys and select them with the space bar).  Then use the Hide function to make them disappear.  You might even Hide every part of the plane except the windscreen!  Now you can work on just the windscreen and make whatever changes you like, then Unhide the other parts when you're done.

Designing is often a matter of doing a bit, asking a question, doing a bit more, asking another question, etc.  But it's a great learning experience Grin

Gryshnak
Still learning FSDSv3

Edit: Can you post a screenshot of your project?  It might help us visualise your problems.
 
IP Logged
 
Reply #4 - Aug 27th, 2006 at 3:07am

Nav   Offline
Colonel

Posts: 717
*****
 
Thanks for the constructive replies, guys, they're helping. Though I must admit that it's like learning a foreign language without a dictionary - you keep coming across words (and techniques) that you just don't know.

Good idea about screenshots, gryshnak. The aeroplane I'm trying to do is the DH Flamingo, which would have been Britain's answer to the Dakota (it carried almost as much just as far, 40 knots faster) had De Havilland not had to stop producing it in 1938 and concentrate on the Mosquito as WW2 approached.

...

I've managed to get this far. I'm 75% satisfied with the fuselage (it has a 'rounded square' cross-section which helped me learn a bit about templates!). The wing needs further work - I need to start from scratch with the proper aerofoil section - and the tailplane is still in the formative stage, but coming along all right.

...

The only problem I still have is, how do I do rounded wingtips instead of square ones? Templates again?

Also, Brett, how do I 'add points'? This comes up under 'Edit', but only in Template Mode, it's greyed out in all other modes?

As far as I can work out, the ways forward look to be:-

1. Design the cockpit canopy as a separate 'box', complete with windows, and then save it as a Part and Merge it in.

2. Select/save the whole sections containing the door and cabin windows on each side as separate Parts, form all the openings (somehow), and again Merge them back in.  

I'd appreciate advice on whether I'm on the right track? And also details about the necessary techniques, it's still very much 'trial and error' for me. Or, on second thoughts, maybe more like 'error and trial.'  Smiley
 
IP Logged
 
Reply #5 - Aug 27th, 2006 at 11:00am

Brett_Henderson   Offline
Colonel
EVERY OUTER MARKER SHOULD
BE AN NDB

Gender: male
Posts: 3593
*****
 
You're so right when you say it's like learning a language without a dictionary. You literally have to work your way through stuff. A pointer here and a pointer there can help... but you have to remember that any one person's technique for solving a problem stems from how they got to the problem and how they "visualize" solving it. There are many ways to go about it.

Rounding wing-tips, from my perspective, can be done a couple of ways. You can make a sphere; delete all but some portion of it; flatten and shape  it; and then attach it. This of course, means that you'll need to calculate the sphere so that the number and location of the attach-side points, matches the number of points on the end of the wing (after deleting the end, where it will attach). The closer those two numbers, the better.

Another way is to "build" the rounded end,  a poly at a time..

As for adding points. It's done in "Point Mode".. And remember, if you're trying to select individual points that have unseen points behind them, you'll have a lot of trouble.. You HAVE to hide the parts of a part that you aren't working with.  That said..  from point mode.. first click "select" and do a quick select(click/drag) of nothing (that clears any points that might still be selected from another operation). Then click on a point.. hold down "shift+s" and click another point. From there.. you can click "add point" from the PART pull-down , and a new point will be added between the two, selected points..  If you have more than one point selected, you can't add the point..

I hope this helps    Cheesy
 
IP Logged
 
Reply #6 - Aug 29th, 2006 at 7:00am

Nav   Offline
Colonel

Posts: 717
*****
 
Thanks for your efforts, Brett, I'm making progress! I've got moving points taped now - after a delay while I realised that, besides selecting a given point, you have to select 'Translate/Move' before you move it.

Forget learning a language without a dictionary - once you get down to fiddling with individual points, it's more like painting a cathedral with a toothbrush.  Smiley

Rounded wingtips are 'under control' - I found that I can do them the way I did the rounded nose, lots of cross-sections close together. I've also got the hang of transparencies. 

On modelling the cockpit and cabin windows, that's now 'work in progress.' I think the answer is going to turn out to be yet more cross-sections, with double ones for the vertical pillars. Promising results so far, anyway.

In fact, that's maybe some advice I can offer to anyone reading this who is at an even earlier stage than me - there's a tendency at first to economise on cross-sections, on a sort of 'least said soonest mended' principle. Use plenty, especially in critical areas needing detailed design. Keep your original fuselage saved separately so you can always 'backtrack' if need be. And save your work in separate parts (left side,  right side, tail section, cabin section, wing etc.) rather than putting all your eggs in one basket.

Finding this useful too. At first I thought that he was making everything unnecessarily complicated. But I soon realised that he was actually keeping everything pretty simple, it's the actual WORK that's complicated. Smiley

http://www.abacuspub.com/ds/tutorial/FSDSTutorial1.htm

Thanks again, Brett.
 
IP Logged
 
Reply #7 - Aug 29th, 2006 at 10:59am

Ben252   Offline
Colonel
Chester UK

Gender: male
Posts: 54
*****
 
Nav,

Looking at your screen shot's I'd also have a read up about the use of smoothing groups.  This stops the trailing egdes of wings etc looking like a squashed ballon and enables you to produce a clean knife edge.

This phenomenon has now come to be known as Ito'esque.

Ben252
 
IP Logged
 
Page Index Toggle Pages: 1
Send Topic Print