 |
|
|
|
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Following the little discussion in the thread Saturn's Greetings, I
started to explore the ring structure. This is a very first wip using 1
million discrete objects. Obviously, if I want to follow this approach
further, I shall need many more objects. Writing their positions (and
testing their visibility in the scene) takes most of the time. This
exercise too about half an hour. Very acceptable.
I have not taken into account the real dimensions of the ring. I should
provide for that too.
--
Thomas
Post a reply to this message
Attachments:
Download 'complex.png' (317 KB)
Preview of image 'complex.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 03.01.2015 16:17, Thomas de Groot wrote:
> Obviously, if I want to follow this approach further, I shall need
> many more objects.
If that doesn't scale up you could try an isosurface such as
#declare f_particles = function(x,y,z)
{
0.8 - f_crackle(400*x,400*y,400*z) +
0.1 * f_granite(500*x,500*y,500*z)
}
isosurface
{
function { f_particles(x,y,z) }
contained_by { box {<-3,0,0>,<3,0.1,1000>} }
accuracy 0.0001
max_gradient 1000
pigment {color rgb 1}
}
Post a reply to this message
Attachments:
Download 'particles2_800.png' (474 KB)
Preview of image 'particles2_800.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Ah yes! That is what I need in addition. Thanks! I was thinking of using
a media in combination with the ring particles but this would be much
better indeed.
Note that the particles are also traced into a ring pattern Ideally, the
isosurface should mimic that too.
Thomas
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Le 15-01-05 03:17, Thomas de Groot a écrit :
> Ah yes! That is what I need in addition. Thanks! I was thinking of using
> a media in combination with the ring particles but this would be much
> better indeed.
>
> Note that the particles are also traced into a ring pattern Ideally, the
> isosurface should mimic that too.
>
> Thomas
Just add a wood or onion pattern to the function, or an image pattern to
get a beter control.
#declare f_particles = function(x,y,z)
{
0.8 - f_crackle(400*x,400*y,400*z) +
0.1 * f_granite(500*x,500*y,500*z) +
0.9 * f_onion(500*x,0,500*z)
}
Alain
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 5-1-2015 21:43, Alain wrote:
> Just add a wood or onion pattern to the function, or an image pattern to
> get a beter control.
>
> #declare f_particles = function(x,y,z)
> {
> 0.8 - f_crackle(400*x,400*y,400*z) +
> 0.1 * f_granite(500*x,500*y,500*z) +
> 0.9 * f_onion(500*x,0,500*z)
> }
Yes, I had not got that far yet, but that was my intention indeed too :-)
An image is coming soon.
--
Thomas
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Next attempt.
Here dimensions are correct for Saturn's B-ring. The onion pattern in
the function does not show in the fine structure. Maybe not too much of
a problem; the larger particles determine the concentric structure.
--
Thomas
Post a reply to this message
Attachments:
Download 'complex.png' (722 KB)
Preview of image 'complex.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
The preceding image was rendered at a safe altitude of about 100 km
above the ring. Cautiously navigating downwards, we are here at about an
altitude of 10 km. :-)
Distance from Saturn's Centre: 100.000 km, which means still about some
17.000 km from the B-ring's edge.
--
Thomas
Post a reply to this message
Attachments:
Download 'complex.png' (824 KB)
Preview of image 'complex.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
My pilot is reckless!
On our way to the rim of the B-ring, he plunged into the ring itself!
Media to simulate the sub-millimetre particles; reddish zone to indicate
where the "mountains" are going to be. Distance to there is about 500 km.
--
Thomas
Post a reply to this message
Attachments:
Download 'complex.png' (452 KB)
Preview of image 'complex.png'
|
|
| |
| |
|
|
|
|
| |
| |
|
|
On 06/01/2015 15:55, Thomas de Groot wrote:
> My pilot is reckless!
>
> On our way to the rim of the B-ring, he plunged into the ring itself!
>
Give him a copy of Elite Dangerous. :-)
> Media to simulate the sub-millimetre particles; reddish zone to indicate
> where the "mountains" are going to be. Distance to there is about 500 km.
>
This could be a screenshot albeit of a different quality.
--
Regards
Stephen
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
| |
|
|
Hi(gh)!
On 06.01.2015 12:51, Thomas de Groot wrote:
> Next attempt.
>
> Here dimensions are correct for Saturn's B-ring. The onion pattern in
> the function does not show in the fine structure. Maybe not too much of
> a problem; the larger particles determine the concentric structure.
>
The yellow half-lit sphere looming over the rings' edge - is it meant to
be Titan? If yes, you perhaps should have chose a more orange hue...
See you in Khyberspace!
Yadgar
Now playing: Brothers in Arms (Dire Straits)
Post a reply to this message
|
|
| |
| |
|
|
|
|
| |
