May 1998
- OT: CGDC Adam Wiggins
- OT: CGDC Mike Sellers
- There can be.. only ONE! (fwd) Ling
- There can be.. only ONE! (fwd) Matt Chatterley
- Some thoughts on languages and users - was: Ma Jon A. Lambert
- Some thoughts on languages and users - was: Ma Chris Gray
- Some thoughts on languages and users - was: Ma Adam Wiggins
- Some thoughts on languages and users - was: Ma J C Lawrence
- (fwd) AD: [custom graphical] whitestar Crossfi Jon A. Lambert
- LIST: The "MUD-DEV" MUD Development mailing list J C Lawrence
- Wired, UO, Mike Sellers
- Wired, UO, John Bertoglio
- Wired, UO, and Internet Gaming (was OT: Dr. Cat
- Wired, UO, and Internet Gaming (was OT: Koster, Raph
- Wired, UO, and Internet Gaming (was OT: J C Lawrence
- Wired, UO, and Internet Gaming (was OT: John Bertoglio
- OT: Supporting articles found for UOL play style Jon A. Lambert
- PK's: A solution? J C Lawrence
- Preview of Asheron's Call J C Lawrence
- Asheron's Call Interview with Toby Ragaini, Lead Designer, and Jon Grande, Product Planner. J C Lawrence
- Character maintinence - expenditure of resources Adam Wiggins
- Character maintinence - expenditure of resources Dan Shiovitz
- Character maintinence - expenditure of resources Adam Wiggins
- Character maintinence - expenditure of resources J C Lawrence
- Character maintinence - expenditure of resources Koster, Raph
- Character maintinence - expenditure of resources J C Lawrence
- Character maintinence - expenditure of resources John Bertoglio
- Character maintinence - expenditure of resources J C Lawrence
- Motivations for Creating Mud-Like Worllds and Servers | John Bertoglio
- FW: (Fwd) Bouncing mail J C Lawrence
- FW: (Fwd) Bouncing mail John Bertoglio
- FW: (Fwd) Bouncing mail Matt Chatterley
- FW: (Fwd) Bouncing mail s001gmu@nova.wright.edu
- FW: (Fwd) Bouncing mail J C Lawrence
- FW: (Fwd) Bouncing mail s001gmu@nova.wright.edu
- FW: (Fwd) Bouncing mail J C Lawrence
- Character development [was ] Koster, Raph
- Motivations for Creating Mud-Like Worlds and Servers Holly Sommer
- META -- membership Jay Sax
- META -- membership Koster, Raph
- META -- membership J C Lawrence
- Motivations (was something else...) s001gmu@nova.wright.edu
- Motivations (was something else...) Richard Woolcock
- client UI written in server's language (was Some thoughts...) Erik Ostrom
- Some thoughts on languages and users - was: Ma J C Lawrence
- Some thoughts on languages and users - was: Ma Travis S. Casey
- Some thoughts on languages and users - was: Ma J C Lawrence
- META: Character of the list's membership J C Lawrence
- quickie CGDC report Mike Sellers
- quickie CGDC report Adam Wiggins
- Some essays I've written lately Koster, Raph
- Some essays I've written lately Koster, Raph
- Some essays I've written lately Koster, Raph
- Some essays I've written lately Koster, Raph
- Some essays I've written lately Koster, Raph
- Some essays I've written lately J C Lawrence
- Some essays I've written lately Koster, Raph
- Some essays I've written lately J C Lawrence
- Some essays I've written lately J C Lawrence
- Frandel 3D (fwd) Holly Sommer
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is Raph Koster
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is Koster, Raph
- MURKLE: Wot it is Dr. Cat
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is Shawn Halpenny
- MURKLE: Wot it is Mike Sellers
- MURKLE: Wot it is Nathan F Yospe
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is Chris Gray
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is Chris Gray
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is Ling
- MURKLE: Wot it is Oliver Jowett
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is Ling
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is Ling
- MURKLE: Wot it is J C Lawrence
- MURKLE: Wot it is jacob langthorn
- MURKLE: Wot it is Jon A. Lambert
- MURKLE: Wot it is J C Lawrence
- We're Tiny, we're Toonie, we're all a little Loonie! Ling
- META: Search features of the MUD-Dev archive J C Lawrence
- CGDC, a summary Adam Wiggins
- CGDC, a summary Koster, Raph
- CGDC, a summary Holly Sommer
- CGDC, a summary Caliban Tiresias Darklock
- CGDC, a summary J C Lawrence
- CGDC, a summary Chris Gray
- CGDC, a summary J C Lawrence
- CGDC, a summary Marian Griffith
- CGDC, a summary J C Lawrence
- CGDC, a summary Koster, Raph
- CGDC, a summary J C Lawrence
- CGDC, a summary J C Lawrence
- CGDC, a summary Mike Sellers
- CGDC, a summary J C Lawrence
- CGDC, a summary Chris Gray
- CGDC, a summary Travis S. Casey
- CGDC, a summary Koster, Raph
- CGDC, a summary Adam Wiggins
- CGDC, a summary Koster, Raph
- CGDC, a summary Chris Gray
- CGDC, a summary Koster, Raph
- CGDC, a summary John Bertoglio
- CGDC, a summary s001gmu@nova.wright.edu
- CGDC, a summary John Bertoglio
- CGDC, a summary Koster, Raph
- CGDC, a summary s001gmu@nova.wright.edu
- CGDC, a summary J C Lawrence
- CGDC, a summary John Bertoglio
- CGDC, a summary Koster, Raph
- CGDC, a summary Joel Kelso
- CGDC, a summary J C Lawrence
- CGDC, a summary Marian Griffith
- CGDC, a summary J C Lawrence
- CGDC, a summary Marian Griffith
- CGDC, a summary Jon A. Lambert
- CGDC, a summary J C Lawrence
- CGDC, a summary J C Lawrence
- CGDC, a summary J C Lawrence
- CGDC, a summary Adam Wiggins
- CGDC, a summary Jon A. Lambert
- CGDC, a summary Orion Henry
- MUD mentation system Matthew R. Sheahan
- How to handle log-outs in a totally dynamic world. Ben Greear
- How to handle log-outs in a totally dynamic world. John Bertoglio
- How to handle log-outs in a totally dynamic world. Ben Greear
- How to handle log-outs in a totally dynamic world. Dan Shiovitz
- How to handle log-outs in a totally dynamic world. Ben Greear
- How to handle log-outs in a totally dynamic world. Adam Wiggins
- How to handle log-outs in a totally dynamic world. Vadim Tkachenko
- How to handle log-outs in a totally dynamic world. Richard Woolcock
- How to handle log-outs in a totally dynamic world. Ben Greear
- How to handle log-outs in a totally dynamic world. Dan Shiovitz
- How to handle log-outs in a totally dynamic world. J C Lawrence
- On tanks... J C Lawrence
- On tanks... Ling
- More on LetsSystems J C Lawrence
- Attributes: Sanity Holly Sommer
- Attributes: Sanity Travis S. Casey
- Attributes: Sanity Holly Sommer
- Attributes: Sanity Holly Sommer
- Attributes: Sanity Adam Wiggins
- Attributes: Sanity Travis S. Casey
- Attributes: Sanity Holly Sommer
- Attributes: Sanity Holly Sommer
- mudschools Marian Griffith
- mudschools Matt Chatterley
- Mudschool Ling
- Using HTML for a Mud character generator John Bertoglio
- Using HTML for a Mud character generator s001gmu@nova.wright.edu
- Using HTML for a Mud character generator John Bertoglio
- Using HTML for a Mud character generator Holly Sommer
- Using HTML for a Mud character generator John Bertoglio
- Using HTML for a Mud character generator s001gmu@nova.wright.edu
- Using HTML for a Mud character generator Vadim Tkachenko
- Using HTML for a Mud character generator John Bertoglio
- Using HTML for a Mud character generator J C Lawrence
- Using HTML for a Mud character generator Vadim Tkachenko
- Using HTML for a Mud character generator John Bertoglio
- Using HTML for a Mud character generator Robert Woods
- Leaving characters in play Joel Kelso
- Leaving characters in play Ben Greear
- Leaving characters in play John Bertoglio
- Leaving characters in play Adam Wiggins
- Leaving characters in play J C Lawrence
- Leaving characters in play John Bertoglio
- Leaving characters in play Travis S. Casey
- Leaving characters in play Adam Wiggins
- Leaving characters in play John Bertoglio
- Leaving characters in play J C Lawrence
- Leaving characters in play J C Lawrence
- Leaving characters in play Travis S. Casey
- Leaving characters in play J C Lawrence
- Leaving characters in play D. B. Brown
- Leaving characters in play Travis S. Casey
- Leaving characters in play Adam Wiggins
- Leaving characters in play Jon A. Lambert
- Leaving characters in play s001gmu@nova.wright.edu
- Leaving characters in play Ben Greear
- Request "unsubscribe calvin@orinconhi.com mud-dev" Petidomo Mailing List Server
- Natural Language Processing (NLP) Shawn Halpenny
- Is There a There in Cyberspace? J C Lawrence
- Is There a There in Cyberspace? Jon A. Lambert
- Is There a There in Cyberspace? J C Lawrence
- [OT] Web Pages Jon A. Lambert
- AR Mining System John Bertoglio
- AR Mining System Oliver Jowett
- AR Mining System John Bertoglio
- mudschools Mike Sellers
- Using HTML for a Mud character generator Travis S. Casey
- Character creation, was: Mudschool Richard Woolcock
- Character creation, was: Mudschool Jon A. Lambert
- Onchat -- Java based chat room. J C Lawrence
- A short introduction of a (quite) long-time lurker Per Vognsen
- [MUD-Dev]World Size and The "Hot House" Factor Was PK and my "Mobless MUD" idea John Bertoglio
- mudschools jacob langthorn
- world concept jacob langthorn
- world concept Jo Dillon
- world concept J C Lawrence
- world concept Holly Sommer
- world concept jacob langthorn
- OT: Java multithreading performance Vadim Tkachenko
- OT: Java multithreading performance Ben Greear
- OT: Java multithreading performance Vadim Tkachenko
- OT: Java multithreading performance Chris Gray
- OT: Java multithreading performance Vadim Tkachenko
- OT: Java multithreading performance Chris Gray
- OT: Java multithreading performance Vadim Tkachenko
- OT: Java multithreading performance Chris Gray
- OT: Java multithreading performance Ben Greear
- OT: Java multithreading performance Jon A. Lambert
- OT: Java multithreading performance Chris Gray
- OT: Java multithreading performance Vadim Tkachenko
- OT: Java multithreading performance J C Lawrence
- META: Lost messages J C Lawrence
- Titanic's demise (was MURKLE: Wot it is) Mike Sellers
- Titanic's demise (was MURKLE: Wot it is) Koster, Raph
- mudschools jacob langthorn
- mudschools Marian Griffith
- mudschools Mike Sellers
- mudschools Marian Griffith
- mudschools Robert Woods
- mudschools Mike Sellers
- mudschools Robert Woods
- mudschools Robert Woods
- mudschools Caliban Tiresias Darklock
- MUD Schools Adam Casbarian
- MUD Schools Chris Lloyd
- MUD Schools Jon Lambert
- Combat Was Leaving characters in play Orion Henry
- Combat Was Leaving characters in play Oliver Jowett
- Combat Was Leaving characters in play Orion Henry
- Combat Was Leaving characters in play Oliver Jowett
- Combat Was Leaving characters in play D. B. Brown
- Combat Was Leaving characters in play Orion Henry
- Combat Was Leaving characters in play Adam Wiggins
- Combat Was Leaving characters in play J C Lawrence
- Combat Was Leaving characters in play Orion Henry
- Combat Was Leaving characters in play Adam Wiggins
- Combat Was Leaving characters in play Travis S. Casey
- Combat Was Leaving characters in play Adam Wiggins
- Combat Was Leaving characters in play Travis S. Casey
- Combat Was Leaving characters in play Adam Wiggins
- Bad Game Designer, No Twinkie! -- By Ernest Adams J C Lawrence
- Bad Game Designer, No Twinkie! -- By Ernest Adams T. Alexander Popiel
- Bad Game Designer, No Twinkie! -- By Ernest Adams J C Lawrence
- Bad Game Designer, No Twinkie! -- By Ernest Adams John Bertoglio
- Bad Game Designer, No Twinkie! -- By Ernest Adams Caliban Tiresias Darklock
- Bad Game Designer, No Twinkie! -- By Ernest Adams John Bertoglio
- Bad Game Designer, No Twinkie! -- By Ernest Ada ms Koster, Raph
- Bad Game Designer, No Twinkie! -- By Ernest Adams Caliban Tiresias Darklock
- Bad Game Designer, No Twinkie! -- By ErnestAdam s Koster, Raph
- Bad Game Designer, No Twinkie! -- By Ernest Ada ms J C Lawrence
- Bad Game Designer, No Twinkie! -- By Ernest Adams J C Lawrence
- Bad Game Designer, No Twinkie! -- By Ernest Adams John Bertoglio
- Java multithreading test source Vadim Tkachenko
- Java multithreading test source J C Lawrence
- Java multithreading test source Vadim Tkachenko
- Java multithreading test source Ben Greear
- Java multithreading test source Vadim Tkachenko
- Java multithreading test source Chris Gray
- Mud Tales John Bertoglio
- Nested coorindate space model J C Lawrence
- Nested coorindate space model Ling
- Nested coorindate space model J C Lawrence
- Nested coorindate space model Ling
- Nested coorindate space model Michael Hohensee
- Nested coorindate space model J C Lawrence
- Nested coorindate space model Michael Hohensee
- Nested coorindate space model Jason Goodwin
- Nested coorindate space model J C Lawrence
On Fri, 05 Jun 1998 18:40:04 -0400
Michael Hohensee<michael@sparta.mainstream.net> wrote:
> Sorry it took me so long to respond to this message. I've had to do
> some heavy number crunching. :)
Unfortunately you still missed a key point.
> J C Lawrence wrote:
>> On Sat, 30 May 1998 12:07:44 -0400 Michael
>> Hohensee<michael@sparta.mainstream.net> wrote:
>> This is dependant on another assumption: the mapping of the
>> translation layers between domains, and breaks at the translation
>> layer when the a' and b' lengths are zero. You need to take
>> account of the translation layers between coordinate systems.
>>
>> Consider a domain X which contains a nested domain Y. Y has
>> external dimensions of 1x1x1 in X's coordinate system, but has
>> internal dimensions of 100x100x100 in Y's internal coordinate
>> system. All 6 external faces of the cube formed by Y translate to
>> surfaces in X.
>>
>> Now take your stick of length 1. It starts in X's coordinate
>> system and moves in Y's. In Y's coordinate system it too has a
>> length of 1, however, as it crosses the border into Y, it instantly
>> apparently shrinks to a viewer in X due to the fact that its length
>> now subtends a tiny fraction of the visual angle that it did
>> immediately prior to crossing the border.
>>
>> +--------------------------------------------+
>> | \ |
>> | \ |
>> | X domain Y domain |
>> | / |
>> | / |
>> | ...........+-----------------+ |
>> | ^ | ^ | |
>> | | | | | |
>> | | | | | |
>> | | 1 unit | | 100 units | |
>> | | | | | |
>> | | | | | |
>> | | | | | |
>> | V | V | |
>> | ...........+-----------------+ |
>> | |
>> | |
>> +--------------------------------------------+
> Not so. For the viewer determines the size of the object not from
> just the angle between each end of the object's ends, but also from
> the distance between him and each end. As long as one end of the
> stick is inside the Y domain, a portion of the distance between the
> observer in the X domain is stretched by the warping factor in the Y
> domain.
You are ignoring the pessimal case:
+--------------------------------------------+
| \ |
| \ |
| X domain Y domain |
| / |
| / |
| ...........+-----------------+ |
| ^ | ^ | |
| | | | | |
| | | | | |
| | 10 units | | 1000 units| |
| | | | | |
| Q | R|S | | |
| | | | | |
| V | V | |
| ...........+-----------------+ |
| |
| |
+--------------------------------------------+
In the above diagram:
Q is the viewer
R is a stick of unit length located immediately adjacent to the
boundary of the Y domain, and whose length is perpendicular to Q's
line of site to R.
S is the same stick moved a tiny distance so that it not lies in the
Y domain. Note: The delta distance between R and S is proximate to
zero (incremental).
The angle subtended at Q by the length of R is significantly larger
than the angle subtended at Q by the length of S, __UNLESS__ you make
a linear map of the translation layer between X and Y (ie a 10 unit
"window" exists in Y which maps to X).
> I think there's a slight conceptual barrier here. There are two
> kinds of distances: Absolute distance, and Percieved distance. The
> absolute distance is what you get if you calculate the distance
> based on coordinates alone. When we look at the picture above, we
> are looking at it in terms of its absolute coordinates.
Understood. Unfortunately perceived distance is a function of
geometry and that geometry occurs in hard coordinates.
> So, if you do the math, you find that as the angle subtended by the
> stick decreases, the distance that the observer's vision-path
> travels through Y increases. If we use the right formula, we get
> the same length of the stick no matter where we look at it from.
This is conveniently only true except when the translation layer is
parallel to the line of sight. It becomes less true as the angle
between the line of sight and the translation layer moves approaches a
normal.
>> Further this allows the TARDIS-like mechanics of being in X, moving
>> south thru the B interface into Y, turning around 180 degrees and
>> exiting Y thru the D interface to find yourself facing in the same
>> dirction as when you started, and having traveled to the opposite
>> side of Y.
> Yes, but if you do it this way, what you've really got are portals
> which have the property of shrinking or enlarging an object that
> passes through them.
Actually no. The basic definition and unit size of the coordinate
spaces is constant across all coordinate spaces. The portals merely
translate objects between coordinate spaces. There is no scaling.
For instance, Bubba, standing in the X domain above, and entering Y,
would appear to be the same size when viewed from X as he was in Y
(and visa versa). However, if the Y domain were entombed say in a
small box, Bubba would be able to enter X and then have Boffo pick up
the box and cart it away with Bubba riding along inside.
The scaling feature, the ability for a seming tiny figure of Bubba in
a domain to leave that domain and suddenly become "large" (relatively)
is not directly handled or addressed by this model. It can however be
simulated, sort of, by other means.
> The spacial compression isn't really a property of the space that
> one resides in, but one of the entrances and exits of that space.
No compression, but yes. It also handles the TARDIS beautifully.
> The main problem with this is that you have to be especially careful
> to ensure that objects can't enter or exit the space without going
> through the portals.
Not true -- all coordinate spaces are equal. In fact, all coordinate
spaces could actually be the same coordinate space with the
translation layers merely acting as "warps" bidirectionally
translocating passers-thru to a distant and unused portion of the
global coordiate space.
> It also prevents the creation of a variably compressed/stretched
> space, and complicates (where it doesn't prevent) calculations of
> space "lens" effects. It's not the most elegant and universal
> solution... :/
Agreed. It is both simple and cheap.
>> Except for the case when an object lies just other side of a
>> translation layer.
>>
> Not if you've got the right formula! (which I don't, yet.. :)
See above.
--
J C Lawrence Internet: claw@null.net
(Contractor) Internet: coder@ibm.net
---------(*) Internet: claw@under.engr.sgi.com
...Honourary Member of Clan McFud -- Teamer's Avenging Monolith... - Nested coorindate space model Michael Hohensee
- Nested coorindate space model J C Lawrence
- Nested coorindate space model Benjamin D. Wiechel
- Nested coorindate space model J C Lawrence
- Nested coorindate space model Michael Hohensee
- Now For Something Completely Different: PK with style John Bertoglio
- Sex in Games -- ya gotta, um, yeah J C Lawrence
- Combat in the Abandoned Realms John Bertoglio
- A Metaphysics System s001gmu@nova.wright.edu
- META: New list features J C Lawrence
- OT: Java multithreading test source Jon A. Lambert
- OT: Java multithreading test source Mike Sellers
- OT: Java multithreading test source Ben Greear
- OT: Java multithreading test source Jon A. Lambert
- OT: Java multithreading test source Jon A. Lambert
- OT: Java multithreading test source Jon A. Lambert
- OT: Java multithreading test source Jon A. Lambert
- OT: Java multithreading test source Ben Greear
- OT: Java multithreading test source John Bertoglio
- OT: Java multithreading test source Vadim Tkachenko
- OT: Java multithreading test source Jon A. Lambert
- OT: Java multithreading test source Ben Greear
- Plug: Got my java client to work using the java-plugin. Ben Greear
- UO's rep system, was: CGDC Koster, Raph
- UO's rep system, was: CGDC J C Lawrence
- BIAP Chat/Chat Pro (fwd) Nathan F Yospe
- BIAP Chat/Chat Pro (fwd) Holly Sommer
- Tutorial for Multi-User Environments Niklas Elmqvist
- Tutorial for Multi-User Environments Niklas Elmqvist
- skill system Andrew C.M. McClintock
- skill system Jo Dillon
- skill system Andrew C.M. McClintock
- skill system Adam Wiggins
- skill system Marian Griffith
- skill system J C Lawrence
- skill system Jon A. Lambert
- skill system John Bertoglio
- skill system J C Lawrence
- skill system s001gmu@nova.wright.edu
- skill system Adam Wiggins
- skill system Katrina McClelan
- skill system Richard Woolcock
- skill system Koster, Raph
- skill system John Bertoglio
- skill system Adam Wiggins
- skill system Mike Sellers
- skill system Richard Woolcock
- skill system Adam Wiggins
- skill system Richard Woolcock
- skill system Katrina McClelan
- skill system Adam Wiggins
- skill system Richard Woolcock
- skill system Katrina McClelan
- skill system Adam Wiggins
- skill system Dan Shiovitz
- skill system Adam Wiggins
- skill system Richard Woolcock
- skill system Adam Wiggins
- skill system Richard Woolcock
- skill system J C Lawrence
- skill system s001gmu@nova.wright.edu
- skill system J C Lawrence
- skill system John Bertoglio