Sigil shape

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empty79's picture
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Sigil shape

Hi.
Sorry if I'm asking a well-known question such as this, but how do you imagine Sigil's ring-like shape?

In the Campaign Setting is says that the ring has 5 miles diameter and 20 miles circumference: does this mean it's a rotational solid made from a 5 mile diameter circle that rotates on a circle of mean circumference 20 miles long? That would mean it's a Very fat ring.... way far from any depiction of the city that you can find.

Also, the city is built on the internal concave surface of the ring, but what's the angular width of the sector? If we take the "wheeltyre" example model, the city should fold over itself (have an angular width > 180°).

In any case, how much of the "nothingness" outside Sigil is visible from the streets?

What's your position about this issue? Is there any canon information that can be used?
Thanks very much.

P.S. Let's ignore the fact that The Lady can shrink or enlarge the city at will.

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Sigil shape

As a commentary on the dimensions of Sigil - arguably the 5-mile dimension measures the width of the city from rim-to-rim, not the diameter of the ring itself. So it's a rotational solid made from a circle with a (5*2=10) mile cicumference, and a diameter of only about 1.6 miles, rotating around a circle with 20 mile circumference. That's a lot closer to established art.

The angular width of Sigil, meanwhile, is IMHO exactly 180°, with the extreme edges of the city lining up with one another. If any of my players try and prove that that sort of angular width would cause cramping for tall buildings butting tops with one another, I politely ask them for the math book used to back up their notes, then beat them with it. Cool

(This all assumes that Sigil works on pure Euclidean geometry, of course. It probably doesn't, at least a lot of the time.)

As for the "nothingness", some of it can be viewed from the streets of Sigil, but not much. No exact measurements have ever been calculated - though it seems that every generation has one or two ambitious Guvners who want to try. The fortunates among this lot generally get released to the Bleakers' custody two or three months after they start on their work.

Jem
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Sigil shape

(By the way, the proper name for Sigil's shape is "torus.")

The city would indeed fold over itself if it were a flat rectangle folded into shape; however, if I recall correctly maps from Planescape supplements indicate it might be better thought of as a series of wedges on each side, folded into concavities and attached at each end. The Lady's Ward isn't just an exclusive sector of Sigil -- it's literally smaller, being on the inner edge of the ring!

I'm fairly sure the Cage does not have any views of the outside. Maybe if you dug into the "bedrock" of the City you'd eventually break through; this Babel-esque undertaking is probably not likely to result in any profit for the erstwhile investigators, though. ;^)

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Sigil shape

'Jem' wrote:
Maybe if you dug into the "bedrock" of the City you'd eventually break through

I'm pretty sure I remember reading somewhere that no matter how deep you dig, there's always more Sigil-stuff. Not to mention the Dabus would probably pave over the hole if you went too deep. Safety hazard and all Laughing out loud

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Sigil shape

'Jem' wrote:
(By the way, the proper name for Sigil's shape is "torus.")

It's not a full torus; it's a torus with the interior half cut out, like a tire. A hemitorus, perhaps. That is, the latitudinal axis of the torus only completes 180 degrees or so, not the full 360 degrees. It has two edges, walled off with buildings so you can't get to them casually, but there's no need to tunnel through the ground to get outside. There's a story by H.P. Lovecraft called "The Music of Erich Zann" that dramatized a similar situation, an otherworldly city accessible only through a certain gate (a bridge); you couldn't tell that beyond the buildings was swirling, maddening nothingness unless you were in a certain room in a building high enough to see over the edge. Gary Gygax did a similar thing with his extraplanar metropolis "Weird Way," where it wasn't clear just how otherworldly the place was until the heroes climbed to the top of a building and saw that only mist and fog lay at the other side.

I see Sigil's latitudinal curve as 180 degrees, but others have proposed other angles. I think Shemmy sees Sigil as a 5 mile wide band cut out of the center of a 20 mile diameter sphere, which would make it not toroidal at all, but would mean that no matter where along the curve you're standing, part of the city on the opposite side of the ring is directly overhead.

I'd also like to vote for the "fat ring." Sigil has 100 square miles of interior surface area, unless the curves or the Lady of Pain's fiat distort that.

'eldersphinx' wrote:
As a commentary on the dimensions of Sigil - arguably the 5-mile dimension measures the width of the city from rim-to-rim, not the diameter of the ring itself. So it's a rotational solid made from a circle with a (5*2=10) mile cicumference, and a diameter of only about 1.6 miles, rotating around a circle with 20 mile circumference. That's a lot closer to established art.

Yes, that's how I see it as well. The curve of the 'U' shape is five miles, while the distance between the top two points is substantially less.

Jem
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Sigil shape

'ripvanwormer' wrote:
'Jem' wrote:
(By the way, the proper name for Sigil's shape is "torus.")

It's not a full torus; it's a torus with the interior half cut out, like a tire.

... I will be plain buggered. I always figured the Cage was completely closed. Can you see the "top" of the Spire out one side of the city, or is it all fog? I'd get vertigo if the infinite Outlands were lying off to my right with gravity apparently pointing toward me from the side.

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Sigil shape

Thanks u all for your contribution Smiling
I've made some calculations and it seems the 5 miles width on 180°, 20 miles circumference returns a particular torus where the circumferences are all tangent to each other (so there's no hole in the middle). The corresponding "half-torus" is a fat ring indeed... however even in this case there are places where the nothingness is clearly visible over your head.

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Sigil shape

'Jem' wrote:
Can you see the "top" of the Spire out one side of the city, or is it all fog?

It's not fog, it's nothingness. Not light, not dark, not shadow, just nothing.

The presence of the Spire ultimately cancels out all matter and energy, so there isn't anything to see. When you're as close to the Spire as Sigil is believed to be, the Spire itself doesn't exist as a solid object. Although that's just my interpretation (supported by the Planewalker's Handbook hinting that life itself should be impossible at Sigil's location, and the 1e Manual of the Planes saying it was impossible for mortals or gods to reach the Spire itself); what's canon is that Sigil is surrounded by utter nothingness. It's possible that Sigil itself creates the nothingness, or some other source other than the Spire.

You can't see the Outlands either.

Here's the picture of Sigil from the Planescape boxed set, by the way:

Jem
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Sigil shape

Many thanks. I have had a serious misimpression of the setting (on a rather basic element, at that) corrected as a result of this thread.

420
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Sigil shape

There is a great illustration in the 3E Planar Handbook (pg 145) that shows various cross sections of Sigil. But, for some lame reason, WotC didn't include it in the online art gallery for the book. However, it is a great diagram that helped me to finally visualize just what shape Sigil is.

Anyone have the Planar Handbook and a scanner?

They did include this illustration though, which is kind of neat but doesn't really help clarify the shape ar all:

-420

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Sigil shape

Hey, I have a scan of that page that I use for quick reference when GMing. It's not the best scan, but it works. PM me if you want it, or if everyone thinks its kosher I can post it

420
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Sigil shape

'Hymneth' wrote:
Hey, I have a scan of that page that I use for quick reference when GMing. It's not the best scan, but it works. PM me if you want it, or if everyone thinks its kosher I can post it
Considering that WotC posts all their other artwork and maps online for anyone to download I don't see any problems. They just skipped the "map" sections of the Planar Handbook for some reason.

-420

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Sigil shape

An example of what Sigil looks like from its streets. You can see the opposite edge curving up like a great wall in the distance, and the "sky," which is full of clouds and haze and portals to the planes of smoke and radiance obscuring the void.

The fact that Sigil has a pretty normal looking sky may seem to contradict what I said about nothingness, but the view "down" over the edge is very different.

http://www.nnm.ru/imagez/gallery/doci/new/new_and_old_games-1146994760_i_2500.jpg

I was trying to find a screenshot of one of Planescape: Torment's other sigilscapes, but couldn't.

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Sigil shape

'420' wrote:
Considering that WotC posts all their other artwork and maps online for anyone to download I don't see any problems. They just skipped the "map" sections of the Planar Handbook for some reason.

Good enough for me

*Hmmm* Not to sound like a neophyte, but would someone tell me how to post the dang thing :oops:

420
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Sigil shape

'Hymneth' wrote:

*Hmmm* Not to sound like a neophyte, but would someone tell me how to post the dang thing :oops:


You can try one of those free picture upload sites like Shutterfly or some other one. I've never used one before but apparently it's pretty easy.

-420

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Sigil shape

Ok, thanks a lot. I believe it worked this time.

EDIT: Damnit. Ok, trying again
:x

RE-EDIT: Ok, I surrender. Here's the link http://ww1.pureupload.com/public/pview/26299/Sigil.jpg

420
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Sigil shape

There we go, for all its faults Planar Handbook does a great job of illustrating sigils shape.

Thanks!
420

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Sigil shape

Yep, the map in the Planar Handbook is fairly consistent with earlier sources. Tho in retrospect, it seems obvious from looking at it that there's something drastically non-Euclidean going on here.

After all, the city as mapped can be represented as a long rectangular strip, 20 miles wide along the upper rim, 20 miles wide along the center, and 20 miles wide along the lower rim. That's what the by-blocks detail shows, as it lays out the positions of the Wards and major city buildings, right?

At the same time, though, Sigil's mapped along the interior of a torus. The circle enscribed along the center of the city should be larger than the circle enscribed by either rim.

It's the Lady's work, I'll bet.

420
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Sigil shape

'eldersphinx' wrote:

At the same time, though, Sigil's mapped along the interior of a torus. The circle enscribed along the center of the city should be larger than the circle enscribed by either rim.

It's the Lady's work, I'll bet.


Yeah the rectangular view of the wards should look more like (prepare for my LEET grafix skillz):

<======>

(Wow that sucks! Reminds me of the old ASCII graphics computer games.)

To show that the closer one is to the center interior the longer that strip of land around the circle will be.

Hey... whats the jagged, blade-like shadow coming toward us? I'm gonna go stand in it!

-420

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