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
> -----------

Post a reply to this message

Just work in feet or something and then add a final scale statement to
change it to 1 unit=25 meters.  If you work with 1 unit = 1 foot, then when
you're done, scale your scene by 82.020997 and that should give you 1 unit =
25 meters.

Ken


Kardal wrote in message <348F06AD.E01D8D9E@geocities.com>...
>
>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:
>

Post a reply to this message

Hi Pals,

Sorry to say you are all besides the point.
POV-Ray handles very well both left and right handed systems, just check
your docs, in WinPov 3.01 check sections :
==> 4.1.1 Understanding POV-Ray's Coordinate System
and
==>7.4.4.5.2 Handedness

That being said, a choice as been made by the main contractor to build a
left handed world, not a single problem, the one who builds a right
handed system will simply have to scale his model to <1, 1, -1> then
rotate it appropriately so that it matches the right directions, then
translate to the plot - easy.

Hope this helps,
Al.


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Post a reply to this message

Alain CULOS wrote:

> Hi Pals,
>
> Sorry to say you are all besides the point.

Principles are never besides the point.

> POV-Ray handles very well both left and right handed systems, just check
> your docs, in WinPov 3.01 check sections :
> ==> 4.1.1 Understanding POV-Ray's Coordinate System
> and
> ==>7.4.4.5.2 Handedness
>

Whatever.

> That being said, a choice as been made by the main contractor to build a
> left handed world, not a single problem, the one who builds a right
> handed system will simply have to scale his model to <1, 1, -1> then
> rotate it appropriately so that it matches the right directions, then
> translate to the plot - easy.
>

Great, then I'll just send my scene files to you and you can do it.  It's
already going to be hard enough to create something at the microscopic scale
of 1 unit = 25m (= 82 ft), without having to re-do the scaling and rotation
at the end.

And I still say Z is altitude.

jbm!

Post a reply to this message

Create your scene with any orientation or scale you would like to.  Make one
unit equal to a mile if you want.  Just make sure you relate 1 unit to some
known measurement, and I'LL be glad to rerotate your scene and scale it to
match the specs.  The specifications should have no impact whatsoever on
your modeling.

Ken


Brook Monroe wrote in message <3490208C.C0FE5858@worldnet.att.net>...
>
>
>Alain CULOS wrote:
>
>> Hi Pals,
>>
>> Sorry to say you are all besides the point.
>
>Principles are never besides the point.
>
>> POV-Ray handles very well both left and right handed systems, just check
>> your docs, in WinPov 3.01 check sections :
>> ==> 4.1.1 Understanding POV-Ray's Coordinate System
>> and
>> ==>7.4.4.5.2 Handedness
>>
>
>Whatever.
>
>> That being said, a choice as been made by the main contractor to build a
>> left handed world, not a single problem, the one who builds a right
>> handed system will simply have to scale his model to <1, 1, -1> then
>> rotate it appropriately so that it matches the right directions, then
>> translate to the plot - easy.
>>
>
>Great, then I'll just send my scene files to you and you can do it.  It's
>already going to be hard enough to create something at the microscopic
scale
>of 1 unit = 25m (= 82 ft), without having to re-do the scaling and rotation
>at the end.
>
>And I still say Z is altitude.
>
>jbm!
>
>
>

Post a reply to this message

Ken was faster than me on that one, but the *EASY* way out is do your
scene as he says in whatever you like, for instance you want :
1ft=1unit
Z=up
Y=into the screen
X=right
this is a right handed coordinate system

Embed your whole construction into an object :

/*
  world in left handed coordinates, unit = 25 metres
  y = up
  x = right
  z = into the screen
*/
object
{
   /*
       your whole construction goes there,
       it is meant to be starting at <0, 0, 0>
       and extend as far as <738, 738, 164>
       unit in feet
  */
  rotate 90*x
  // that changes :
  // = up(z) to up(-y)
  // = right(x) is preserved
  // = into the screen(z) to into the screen(y)

  scale <1, 1, -1>/82
  // to bring your up(-y) to up(y) and
  // change the scale to 1unit=25metres

  translate to <0.5, -0.01, 0.5>
  // to put it into the first slot allocated,
  // change that translation for another slot
}

I personally find this sort of things easy, if you don't just let me
know exactly what you want and I'll tell you the transformations.

Cherio,
Al.

Brook Monroe wrote:

> Alain CULOS wrote:
>
> > Hi Pals,
> >
> > Sorry to say you are all besides the point.
>
> Principles are never besides the point.
>
> > POV-Ray handles very well both left and right handed systems, just check
> > your docs, in WinPov 3.01 check sections :
> > ==> 4.1.1 Understanding POV-Ray's Coordinate System
> > and
> > ==>7.4.4.5.2 Handedness
> >
>
> Whatever.
>
> > That being said, a choice as been made by the main contractor to build a
> > left handed world, not a single problem, the one who builds a right
> > handed system will simply have to scale his model to <1, 1, -1> then
> > rotate it appropriately so that it matches the right directions, then
> > translate to the plot - easy.
> >
>
> Great, then I'll just send my scene files to you and you can do it.  It's
> already going to be hard enough to create something at the microscopic scale
> of 1 unit = 25m (= 82 ft), without having to re-do the scaling and rotation
> at the end.
>
> And I still say Z is altitude.
>
> jbm!

Post a reply to this message

To get around your problem, maybe this will help: 1 unit is (about) 10
inches.


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Please also reply by E-mail.
Please remove the 'no spam' # from my address when replying by E-mail

Brook Monroe <rin### [at] worldnetattnet> schreef in artikel
<3490208C.C0FE5858@worldnet.att.net>...
> 
> 
> Alain CULOS wrote:
> 
> > Hi Pals,
> >
> > Sorry to say you are all besides the point.
> 
> Principles are never besides the point.
> 
> > POV-Ray handles very well both left and right handed systems, just
check
> > your docs, in WinPov 3.01 check sections :
> > ==> 4.1.1 Understanding POV-Ray's Coordinate System
> > and
> > ==>7.4.4.5.2 Handedness
> >
> 
> Whatever.
> 
> > That being said, a choice as been made by the main contractor to build
a
> > left handed world, not a single problem, the one who builds a right
> > handed system will simply have to scale his model to <1, 1, -1> then
> > rotate it appropriately so that it matches the right directions, then
> > translate to the plot - easy.
> >
> 
> Great, then I'll just send my scene files to you and you can do it.  It's
> already going to be hard enough to create something at the microscopic
scale
> of 1 unit = 25m (= 82 ft), without having to re-do the scaling and
rotation
> at the end.
> 
> And I still say Z is altitude.
> 
> jbm!
> 
> 
> 
>

Post a reply to this message

The fun everyone is having.  GEESH!

I just put my monitor on the floor facing up and sit really, really
close.  Z is up and working in miniture is easy.

Post a reply to this message

Croyd wrote:
> 
> The fun everyone is having.  GEESH!
> 
> I just put my monitor on the floor facing up and sit really, really
> close.  Z is up and working in miniture is easy.

Actually, wouldn't you need to hang it from the ceiling to be accurate??

Robert J Becraft
aka cas### [at] aolcom  <--- the real me.

Post a reply to this message

That could lead to some interesting headlines:  Man killed after monitor
falls from the sky! ;-)

Post a reply to this message