I picked up this terrific light fitting from a sparky at work, and thought
it
would look good in a scene I'm working on.  The base is pure CSG (autocad
sure
helps with getting those tangents right) but the zigzaggy bit is cut out
from a merge using isosurfaces (it's going to be a glass texture later, but
I want to see what the shape looks like now).  I'm thinking that I will
plug a whole lot of photons through it when it is finished, then render the
output as a sort of 'projected through' image map to fake the caustics, or
it's going to take
ages to render with radiosity+normals, area lights & focal blur.

Anyhoo, like I said, I'm drunk & I just wanted to share.
Will keep you posted on the scene as it develops.
BTW This community rocks (I love you guys, I really really, ... I need to go
peee....)

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Mark Birch wrote:
> I picked up this terrific light fitting from a sparky at work, and thought
> it
> would look good in a scene I'm working on.  The base is pure CSG (autocad
> sure
> helps with getting those tangents right) but the zigzaggy bit is cut out
> from a merge using isosurfaces (it's going to be a glass texture later, but
> I want to see what the shape looks like now).  I'm thinking that I will
> plug a whole lot of photons through it when it is finished, then render the
> output as a sort of 'projected through' image map to fake the caustics, or
> it's going to take
> ages to render with radiosity+normals, area lights & focal blur.
> 
> Anyhoo, like I said, I'm drunk & I just wanted to share.
> Will keep you posted on the scene as it develops.
> BTW This community rocks (I love you guys, I really really, ... I need to go
> peee....)
> 
> 
> 
> ------------------------------------------------------------------------
> 
Very Nice,

I have an industrial type scene that could use a fixture like that.  I 
was actually working on one of those red emergency lights in the wire cage.

How thick is the glass at it's thinnest point? (And can you post your code?)

regards,

A.D.B.

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Mark Birch wrote:
> I picked up this terrific light fitting from a sparky at work, and thought
> it
> would look good in a scene I'm working on.  The base is pure CSG (autocad
> sure
> helps with getting those tangents right) but the zigzaggy bit is cut out
> from a merge using isosurfaces (it's going to be a glass texture later, but
> I want to see what the shape looks like now).

Hmm...  Don't know why, but I keep seeing the lower half as one of those 
Escher-like impossible, inside-out figures.  When I look closely I can 
see it definitely is not, but there's something about the lighting, the 
position or whatever that confuses my eyes.  Rotating it 90 degrees CCW 
helps, but still...  Of course, maybe it's just me.  ;-)

> Anyhoo, like I said, I'm drunk & I just wanted to share.

I'll have to look at it again the next time I'm drunk...    ;-)

      -=- Larry -=-

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On Sat, 30 Jul 2005 15:46:00 -0700, Larry Hudson <org### [at] yahoocom>
wrote:

>Hmm...  Don't know why, but I keep seeing the lower half as one of those 
>Escher-like impossible, inside-out figures.  

You had to mention this?  Now that's all I see!  The bottom keeps
flipping inside out.  Thanks alot...   ;-)


Kyle

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> Hmm...  Don't know why, but I keep seeing the lower half as one of those 
> Escher-like impossible, inside-out figures.  When I look closely I can 
> see it definitely is not, but there's something about the lighting, the 
> position or whatever that confuses my eyes.  Rotating it 90 degrees CCW 
> helps, but still...  Of course, maybe it's just me.  ;-)
> 


I see what you mean. I think it's because of the highlight along the 
inside, bottom edge where the side joins the bottom.

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Kyle wrote:

>>Hmm...  Don't know why, but I keep seeing the lower half as one of those 
>>Escher-like impossible, inside-out figures.  
> 
> 
> You had to mention this?  Now that's all I see!  The bottom keeps
> flipping inside out.  Thanks alot...   ;-)

Your welcome...  ;-)   Anyway, now I know it's not just me.

      -=- Larry -=-

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"Anthony D. Baye" <Sha### [at] hotmailcom> wrote:

> Very Nice,
>
> I have an industrial type scene that could use a fixture like that.  I
> was actually working on one of those red emergency lights in the wire cage.
>
> How thick is the glass at it's thinnest point? (And can you post your code?)
>
> regards,
>
> A.D.B.

The glass at it's thinnest point (as I've modelled it anyway) is about 4mm,
which in a small dome-shape means it's pretty chunky.  Should handle fairly
well in a small POV-explosion or something.

The modle is fairly complete, though it could use a couple of extra bits of
detail, like screws to hold the enclosure shut, and I still need to put a
light bulb in it and figure out how to get the light cast out from it to
look good without taking too long to render...

Anyway, this is what it looks like with the glass dome complete.
Will post code in PBSF.  Scale is 1 PU = 1m.

Mark.

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Larry Hudson <org### [at] yahoocom> wrote:
>
> Hmm...  Don't know why, but I keep seeing the lower half as one of those
> Escher-like impossible, inside-out figures.  When I look closely I can
> see it definitely is not, but there's something about the lighting, the
> position or whatever that confuses my eyes.  Rotating it 90 degrees CCW
> helps, but still...  Of course, maybe it's just me.  ;-)
>
> I'll have to look at it again the next time I'm drunk...    ;-)
>
>       -=- Larry -=-


Where would the raytracing world be without Escher?

Oddly enough, I'm just starting my own version of 'cubic space division',
and the scene the light fixture is going into started out as a minimalistic
version of that.  No optical illusions were intended though, but you
understand I just *had* to radius that inner corner.

Mark

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