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I finally managed to make a torus. (Yes, I realise you could just click
"add torus". But I wanted to see if it's possible to model it by hand.)
It's not an especially rounded torus, and it's taken about 20 minutes to
do, but it's vaguely torus-shaped. (See attached.)
My method was to start with a cube [since every tutorial I've found
always starts with a cube], scale it, and punch a hole through it.
Sounds easy, right? Well let me tell you: it isn't.
First, I want to scale it on just two axies, not all three. Apparently
you can do this by pressing the letter of the axies you want to scale
along. (Still not sure why the Y axis is drastically less sensitive than
the X axis. I specifically put the mouse pointer in exactly the just
spot before hitting the scale button...)
Next, punch a hole in the middle. Now the ideal thing to do here would
be to just draw a circular hole in the top and delete the face inside
it. But I have no clue how to do that. After much searching [earlier
today], I discovered that you can do an "edge subdivide", which takes an
edge and puts a new vertex in the middle of it. If you select the top
face of the cube and hit subdivide, the face turns into four smaller
faces. So far so good.
However, this operation also "shatters" all the other faces that touch
the top. And after a considerable length of time, I was utterly unable
to find a way to remove the extra unwanted edges without also removing
the faces they form part of. (WTF?)
After a while, I discovered that if you select the top and bottom
surfaces of the cube simultaneously (yes, apparently you can do that),
and subdivide both faces at once, you get a reasonable grid of points
that you can then work with.
Subdivide again and now the top and bottom each consist of 4x4 squares.
Now delete the middle four faces from the top and button surfaces.
This kind-of works. You now have a gaping hole in the middle though.
After a refreshingly brief search, I was able to determine that [space]
-> edit -> faces -> make face/edge will add a new face, so long as you
have two edges selected. At least, it seems to work in this instance.
Turn on the subsurf thingy and the result is a slightly torus-shaped
thingamy.
Now, if I can determine how to move all the existing geometry around
without completely destroying it, I might be able to rearrange all the
points into a more circular configuration. (Although obviously it'll
never be symmetrical...)
FWIW, it also took a Google search to figure out how to *save* the
rendered image. o_O Pretty obvious once you already know the answer
though...
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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Attachments:
Download 'torus1.jpg' (31 KB)
Preview of image 'torus1.jpg'
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This didn't happen on the VM at work, but on my home PC Blender has
chosen to render the panels at the bottom of the screen so that there's
a 2-inch gap on the left, and the last panel is half-way off the right
edge of the screen. Anybody have any clue why?
(I did try just dragging the panels back to where they should be, but
nothing happens.)
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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Orchid XP v8 wrote:
> This didn't happen on the VM at work, but on my home PC Blender has
> chosen to render the panels at the bottom of the screen so that there's
> a 2-inch gap on the left, and the last panel is half-way off the right
> edge of the screen.
In case that didn't make sense...
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
Post a reply to this message
Attachments:
Download 'blender2.png' (99 KB)
Preview of image 'blender2.png'
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Orchid XP v8 escreveu:
> I finally managed to make a torus. (Yes, I realise you could just click
> "add torus". But I wanted to see if it's possible to model it by hand.)
> It's not an especially rounded torus, and it's taken about 20 minutes to
> do, but it's vaguely torus-shaped. (See attached.)
>
> My method was to start with a cube [since every tutorial I've found
> always starts with a cube], scale it, and punch a hole through it.
That box donut sucks.
Should`ve listened to my advice, added a circle, enter edit mode (tab),
grab it to the left (g), go to front view (1), hit spin button in the
panels bellow 4 times, hit w and select "Remove doubles", select all (a)
and hit ctrl+n to recalculate the normals. This is how you do surfaces
of revolution and is precisely what the "Add torus" script does.
You then quit edit mode, add subsurface modifier in the F9 panels and
also click on "Set Smooth" in the first such panel to the left so you
have some phong shading on.
> Sounds easy, right? Well let me tell you: it isn't.
Of course it isn't easy doing something the wrong way.
> Next, punch a hole in the middle.
forget it: this isn't CSG, don't try to treat it like one.
> After a while, I discovered that if you select the top and bottom
> surfaces of the cube simultaneously (yes, apparently you can do that),
> and subdivide both faces at once, you get a reasonable grid of points
> that you can then work with.
Forget unnecessary subdivision.
--
a game sig: http://tinyurl.com/d3rxz9
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You can drag all those panels around with alt+(Windows+)LMB. You may
also use mouse wheel with to move them left right and even with ctrl to
do some zoom or shift to up/down them.
--
a game sig: http://tinyurl.com/d3rxz9
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nemesis wrote:
> You can drag all those panels around with alt+(Windows+)LMB.
You can drag them with just LMB. But they immediately spring back to
exactly where they were...
> You may
> also use mouse wheel with to move them left right and even with ctrl to
> do some zoom or shift to up/down them.
Ah. That's probably what happened then - I probably nudged the mouse
wheel. OK, fixed now...
--
http://blog.orphi.me.uk/
http://www.zazzle.com/MathematicalOrchid*
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"Invisible" <voi### [at] dev null> wrote in message
news:4b2a60a3$1@news.povray.org...
> There's nothing *wrong* with keyboard shortcuts, but it does make the
> learning curve rather steep.
There's something wrong on relying on keyboard shortcuts, as that's a
symptom of the lazy programmer, who cannot spend the time and effort to come
up with an intuitive *and* efficient graphical user interface. Yes, keyboard
shortcuts can be efficient in the hands of a power user, but I think there
are three cardinal rules for GUI applications which use them 1) Make them
completely complementary/optional 2) Make them customizable 3) Use platform
defaults and don't reinvent the wheel.
With 3D applications, mousing (for navigation and selection) should ideally
be fully customizable - although nobody really does it properly, AFAICS.
Alternatively, major vendors should get together and decide, say, RMB drag
is tumble, and that's that.
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nemesis wrote:
> forget it: this isn't CSG, don't try to treat it like one.
I *will* say that I wish Blender implemented all the cool operations that
Wings3D implements, like the bevel and bridge and intrude and all that stuff.
--
Darren New, San Diego CA, USA (PST)
Human nature dictates that toothpaste tubes spend
much longer being almost empty than almost full.
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On 12/17/09 09:45, Invisible wrote:
> I think knowing the logic behind the interface (assuming there *is*
> some) will probably help a lot. But sure, if you want to become _expert_
> you're going to need to practise a lot. Currently I just can't make it
No. If you want to do *anything* you'll need to practice a lot.
--
186,000 miles/sec: Not just a good idea, it's the LAW.
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On 12/17/09 10:22, Darren New wrote:
> But yeah, you have to use it, and when you stop it goes away again,
> because there's no mnemonic way of using it. (Unlike wordstar, whose
> keyboard commands I still remember 30 years after I stopped using it.)
Really? In 1979? You used it for at most 1-2 years? What was its
replacement?
--
186,000 miles/sec: Not just a good idea, it's the LAW.
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