 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
I'm talking about glare.
For example, the lights on your Christmas tree. Each light measures
about 5mm across, and about 15mm long. If you took a lump of wood that
size and looked at it from across the room, it's barely visible. If you
render it with POV-Ray, the same thing happens.
And yet, because a light glows, you CAN see if from many meters away,
even though it's very small. Why?
[And how do I tell POV-Ray about this? ;-) ]
Surely I'm not the first person to wonder...
Andrew.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Andrew the Orchid nous apporta ses lumieres ainsi en ce 2004-12-11
15:49... :
> I'm talking about glare.
>
> For example, the lights on your Christmas tree. Each light measures
> about 5mm across, and about 15mm long. If you took a lump of wood that
> size and looked at it from across the room, it's barely visible. If
> you render it with POV-Ray, the same thing happens.
>
> And yet, because a light glows, you CAN see if from many meters away,
> even though it's very small. Why?
>
> [And how do I tell POV-Ray about this? ;-) ]
>
> Surely I'm not the first person to wonder...
>
> Andrew.
A small luminous object alway apears larger than it realy is. It's a
byproduct of the way the light censitive cells in your retina are
connected together and to some scattering inside the eye and the retina
itself.
You can add a little media containing sphere around the lights, around 2
to 4 time the size of the "lights". That media could be emissive or
scattering.
Alain
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
http://www.geocities.com/ccolefax/lenseffects.html
--
plane{-x+y,-1pigment{bozo color_map{[0rgb x][1rgb x+y]}turbulence 1}}
sphere{0,2pigment{rgbt 1}interior{media{emission 1density{spherical
density_map{[0rgb 0][.5rgb<1,.5>][1rgb 1]}turbulence.9}}}scale
<1,1,3>hollow}text{ttf"timrom""Warp".1,0translate<-1,-.1,2>}// - Warp -
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Warp wrote:
> http://www.geocities.com/ccolefax/lenseffects.html
YAY! :-D
http://www.geocities.com/ccolefax/images/le_samp1.jpg
See, now that's exactly the kind of effect I *don't* want...
http://www.geocities.com/ccolefax/images/le_samp5.jpg
That's more what I'm after!
OK, let's go give that a try...
Andrew.
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
|
|
