Kardal wrote:

> Up until today I was doing my geometry wrong also, until I asked my math
> teacher which was axis should be pointing.
>
> It really shouldn't be that much trouble.  Just model it in Moray like you
> always would, but keep it centered on <0,0,0>.  You can then fix it with a
> couple rotate and translate commands.
>
> Being an American, using the metric system (1 unit = 25 meters) will be alien
> to me as well.  That is not so easily fixed.
>
> Don't be suprised if my residence is scaled wrong. : )
>
> ~Kardal~
>

Your geometry teacher supported the idea that the Y axis is altitude in a 3-axis
system?  No wonder the American education system is going to Hell...<G>

I'm not happy with 1 unit=25 meters, either.  I usually use a 1 unit = 1 meter or
1 unit = 1 foot scale (depending on what I'm creating); our entire house would
fit into 1/5 of a unit square at his scale.  I'm not used to drawing things so
small.  That's a lot of detail to cram into a small space, I'm thinking.

jbm!

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Brook Monroe wrote:

> Your geometry teacher supported the idea that the Y axis is altitude in a 3-axis
> system?  No wonder the American education system is going to Hell...<G>
>
> I'm not happy with 1 unit=25 meters, either.  I usually use a 1 unit = 1 meter or
> 1 unit = 1 foot scale (depending on what I'm creating); our entire house would
> fit into 1/5 of a unit square at his scale.  I'm not used to drawing things so
> small.  That's a lot of detail to cram into a small space, I'm thinking.
>
> jbm!

I agree with you 100%!  : )

It really should be 1 unit = 1 meter or whatever, even if you do have 5 or 6 digit
numbers after the city starts to get put together, it will make the dimesions seem
more realistic.  This should be fixed asap before this city gets set up too much.

Also, the city uses an ordinary flat plane for the ground.  This could be a problem
if you want a basement.  I think it would be better if you had to have a green cube
underneath your house and you could difference it as needed.  Plus, it adds the
creativity options of being able to set up a desert palace or a volcano fortress by
changing the color and texture of the ground.  Hmm...

~Kardal~

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Yah, I'm an american too and the metric stuff always gets me.  so what
i did was make a few defines, as follows:

  // in case i want to conform with the world...
  #declare jgbMeter      = 1/25
  #declare jgbCentimeter = jgbMeter * 0.01
  #declare jgbMillimeter = jgbMeter * 0.001

  // in case i don't... :)
  #declare jgbFoot       = jgbMeter / 3.281
  #declare jgbYard       = jgbFoot * 3
  #declare jgbInch       = jgbFoot / 12

(my initials are jgb, so i append all my variables for my plot with them
so that I can avoid conflicts with someone elses variables).  Then,
whenever I specify sizes & translations & positions, I just say, for
examples, "5*jgbFoot" and voila! i get five feet in the scale
specified.  and i can even mix metric and imperial since the definition
of jgbFoot is based on the definition of jgbMeter.

Anyway.  Just a suggestion i thought might help some people, since it
has saved my hide many times!

- ciao!

Jamis Buck
buc### [at] csbyuedu

Kardal wrote:
> 
> Up until today I was doing my geometry wrong also, until I asked my math
> teacher which was axis should be pointing.
> 
> It really shouldn't be that much trouble.  Just model it in Moray like you
> always would, but keep it centered on <0,0,0>.  You can then fix it with a
> couple rotate and translate commands.
> 
> Being an American, using the metric system (1 unit = 25 meters) will be alien
> to me as well.  That is not so easily fixed.
> 
> Don't be suprised if my residence is scaled wrong. : )
> 
> ~Kardal~
> 
> George Hunt wrote:
> 
> > On Tue, 09 Dec 1997 21:42:01 -0500, Brook Monroe
> > <rin### [at] worldnetattnet> wrote:
> >
> > >The Y axis is UP?  What country did YOU study geometry in? <G> This is
> > >going to ruddy well make things difficult to produce in Moray, you know.
> > >
> >
> > Well, you know, that was my first thought.  I'm a long time user and
> > strong supporter of MORAY.   And although Y=UP is a bit alien to me
> > now too, it shouldn't be a problem.  I intend to use MORAY (for
> > Windows) and just build everything so that Y is UP, even if MORAY
> > thinks Z is up.   I could be wrong --- I havn't tried it yet --- but
> > it should work.
> >
> > -----------
> > George Hunt --- Raytracer Obsessivo
> > http://ourworld.compuserve.com/homepages/lightsword
> > 102### [at] compuservecom
> > -----------

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Kardal wrote:
> 
> Up until today I was doing my geometry wrong also, until I asked my math
> teacher which was axis should be pointing.
> 

??????
There is no "correct" way - just go with the rules specified, as you
say, all it does is give you a tiny bit of hassle at the end before you
post your efforts.

> It really shouldn't be that much trouble.  Just model it in Moray like you
> always would, but keep it centered on <0,0,0>.  You can then fix it with a
> couple rotate and translate commands.
> 
> Being an American, using the metric system (1 unit = 25 meters) will be alien
> to me as well.  That is not so easily fixed.

Surely you realise that scaling is just arbitary - if you are using 1
metre not 25, then the whole scene (probably unioned) simply requires a
"scale 1/25".

Mind you, thats all a bit daft now, as the scale has been changed to 1
unit = 1 metre anyway.

> 
> Don't be suprised if my residence is scaled wrong. : )
> 
> ~Kardal~
> 

i'm actualy using my dads machine at the minute, and my own address is
rox### [at] geocitiescom

Regards Rob

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Dave Oxspring wrote:

> Surely you realise that scaling is just arbitary - if you are using 1
> metre not 25, then the whole scene (probably unioned) simply requires a
> "scale 1/25".

That's what I meant.

> Mind you, thats all a bit daft now, as the scale has been changed to 1
> unit = 1 metre anyway.

You should check the date on the message you reply to before wording a sentence
that way.

> >
> > Don't be suprised if my residence is scaled wrong. : )
> >
> > ~Kardal~
> >
>
> i'm actualy using my dads machine at the minute, and my own address is
> rox### [at] geocitiescom
>
> Regards Rob

 ~Kardal~

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George Hunt wrote:

> On Tue, 09 Dec 1997 21:42:01 -0500, Brook Monroe
> <rin### [at] worldnetattnet> wrote:
>
> >The Y axis is UP?  What country did YOU study geometry in? <G> This is
> >going to ruddy well make things difficult to produce in Moray, you know.
> >
>
> Well, you know, that was my first thought.  I'm a long time user and
> strong supporter of MORAY.   And although Y=UP is a bit alien to me
> now too, it shouldn't be a problem.  I intend to use MORAY (for
> Windows) and just build everything so that Y is UP, even if MORAY
> thinks Z is up.   I could be wrong --- I havn't tried it yet --- but
> it should work.
>
> -----------

Well, it MIGHT--but that don't make it right.  Most navigational systems use
X/Y for surface coordinates and Z for altitudes.  Maybe I'm just being too,
um, retentive here, but it bothers me.

jbm!

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Brook Monroe wrote:
> 
> The Y axis is UP?  What country did YOU study geometry in? <G> This is
> going to ruddy well make things difficult to produce in Moray, you know.
> 

Yes.  Hold up sheet of paper.  Draw x-y graph... x goes across the
bottom, y goes up the page... now add z... that goes on sheets of paper
placed in front of or behind your first page.  

Y is UP.

Regards,
Robert J Becraft
aka cas### [at] aolcom

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Robert J Becraft wrote:
> 
> Brook Monroe wrote:
> >
> > The Y axis is UP?  What country did YOU study geometry in? <G> This is
> > going to ruddy well make things difficult to produce in Moray, you know.
> >
> 
> Yes.  Hold up sheet of paper.  Draw x-y graph... x goes across the
> bottom, y goes up the page... now add z... that goes on sheets of paper
> placed in front of or behind your first page.
> 
> Y is UP.
> 
> Regards,
> Robert J Becraft
> aka cas### [at] aolcom

Personally I agree - Up with Y.

The only thing is that there is no sensible argument either way: so to
counter my own opinion, and your argument, lets say you leave this piece
of paper on the table where you drew your X and Y axis. Surely the
sensible place for the Z is perpendicular to the other two lines heading
Up.

My argument is asfloorless as the previous one, and therfore equally
floored.

Think on...

Rob

(actually rox### [at] geocitiescom)

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Dave Oxspring wrote:

> Robert J Becraft wrote:
> >
> > Brook Monroe wrote:
> > >
> > > The Y axis is UP?  What country did YOU study geometry in? <G> This is
> > > going to ruddy well make things difficult to produce in Moray, you know.
> > >
> >
> > Yes.  Hold up sheet of paper.  Draw x-y graph... x goes across the
> > bottom, y goes up the page... now add z... that goes on sheets of paper
> > placed in front of or behind your first page.
> >
> > Y is UP.
> >
> > Regards,
> > Robert J Becraft
> > aka cas### [at] aolcom
>
> Personally I agree - Up with Y.
>
> The only thing is that there is no sensible argument either way: so to
> counter my own opinion, and your argument, lets say you leave this piece
> of paper on the table where you drew your X and Y axis. Surely the
> sensible place for the Z is perpendicular to the other two lines heading
> Up.
>
> My argument is asfloorless as the previous one, and therfore equally
> floored.
>
> Think on...
>
> Rob
>
> (actually rox### [at] geocitiescom)

  BearFace and I have agreed that he and I both are right, that Z is up AND that
Y is up, and from now on, we're just going to split the difference and say X is
up, just to keep things simple. <G>

jbm!

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On Sun, 28 Dec 1997 23:11:37 -0500, Brook Monroe
<rin### [at] worldnetattnet> wrote:

>  BearFace and I have agreed that he and I both are right, that Z is up AND that
>Y is up, and from now on, we're just going to split the difference and say X is
>up, just to keep things simple. <G>

Why not just add in a W vector?

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