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On 10-7-2013 16:49, Paolo Gibellini wrote:
> Very good!
> But... where is the hammer? Give us some hints!
For the time being, it is really lost. The good news is that it is being
modelled and will soon appear in the scene.
Thomas
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Thomas de Groot <tho### [at] degroot org> wrote:
> Great minds think alike ;-) My hammer is also an Estwing, and been with
> me for the last 50 years. Never lost it happily. It now gets a bit rusty
> in places... I am now modelling it for the scene; first a low detail
> version, but I intend to make a high resolution one later on for a
> projected close up of sorts. The least I can do for its faithful
> services :-)
Good brand! I've had mine for about 14 years or so now, and it's badly in need
of a second sharpening already. (The ground doesn't dig itself... well sometimes
it does.) I'm looking forward to seeing your model when you finish it!
> I am curious to see what you mean. I am indeed using radiosity. The
> isosurface max_gradient is pretty low, much lower than recommended by
> POV but giving the details I intend to get. With a lower count, I may
> need to increase the max_gradient though.
I'm not sure increasing the max_gradient is necessary, as all that does is fill
in the holes. If anything, you may need to lower the isosurface's accuracy if
you intend to lower the radiosity's count.
One of my isosurface tests has been posted to the TC-EOG-RTC thread:
http://tinachepforum.forumup.co.uk/viewtopic.php?p=3636&mforum=tinachepforum#3636
That image rendered in 5 minutes 39 seconds, which isn't too bad, all things
considered.
Here's the scene's radiosity block:
radiosity{
count 1
error_bound .1
recursion_limit 1
nearest_count 1
normal on
}
some isosurface settings:
accuracy 0.001
max_gradient 10
and the command line parameters:
+fn +f +a0.3 +am2 +r2 +j0.2
I can post the entire source (with include files) if needed.
An important thing to keep in mind is to always have enough small details on
your surfaces by using things like surface normals and/or and low isosurface
accuracies. Low aa settings help a great deal as far as speeding things up as
well.
Sam
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On 11-7-2013 0:57, Samuel Benge wrote:
> Good brand! I've had mine for about 14 years or so now, and it's badly in need
> of a second sharpening already. (The ground doesn't dig itself... well sometimes
> it does.) I'm looking forward to seeing your model when you finish it!
Do you have the pick or shovel model? Mine is a pick model and the point
is fairly rounded now although still able to neatly insert itself in
crevices. The head part is now badly chipped in places but I love it
that way; showing its age and wear & tear ;-) The leather handle is
fairly roughened now. In dry environments it needs a bath from time to
time when the leather rings dry out and contract. Oh well... a bit of
nostalgic talking, don't I? I am not going much places anymore these days...
The hammer model is progressing smoothly.
> I'm not sure increasing the max_gradient is necessary, as all that does is fill
> in the holes. If anything, you may need to lower the isosurface's accuracy if
> you intend to lower the radiosity's count.
I am indeed also using a max_gradient of 10 in my scene. THe accuracy
presently is 0. As radiosity count I use the adaptive method, presently
50, 1000. I generally leave it at that, but I probably can lower the
lower end more. I shall test that.
>
> One of my isosurface tests has been posted to the TC-EOG-RTC thread:
>
> http://tinachepforum.forumup.co.uk/viewtopic.php?p=3636&mforum=tinachepforum#3636
>
> That image rendered in 5 minutes 39 seconds, which isn't too bad, all things
> considered.
Yes, that is very fast.
> An important thing to keep in mind is to always have enough small details on
> your surfaces by using things like surface normals and/or and low isosurface
> accuracies. Low aa settings help a great deal as far as speeding things up as
> well.
Yep.
Thomas
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>Thomas de Groot on date 10/07/2013 16.56 wrote:
> On 10-7-2013 16:49, Paolo Gibellini wrote:
>> Very good!
>> But... where is the hammer? Give us some hints!
>
> For the time being, it is really lost. The good news is that it is being
> modelled and will soon appear in the scene.
>
> Thomas
>
Ok, this is a comforting news ;-)
Paolo
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On 11-7-2013 9:40, Thomas de Groot wrote:
> On 11-7-2013 0:57, Samuel Benge wrote:
>> I'm not sure increasing the max_gradient is necessary, as all that
>> does is fill
>> in the holes. If anything, you may need to lower the isosurface's
>> accuracy if
>> you intend to lower the radiosity's count.
>
> I am indeed also using a max_gradient of 10 in my scene. THe accuracy
> presently is 0. As radiosity count I use the adaptive method, presently
> 50, 1000. I generally leave it at that, but I probably can lower the
> lower end more. I shall test that.
>
Just a quick note.
I am not correct when I say adaptive /count/. It should be adaptive
/nearest_count/ of course, for which I use the values 10, 5.
After a quick test, I see that I can get away with a much lower count
value. In general, I think I am using too high radiosity settings in my
scenes as I generally leave them at settings I consider as my defaults...
Thomas
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Next, with the hammer and some flying dust.
Thomas
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Attachments:
Download 'elements of geology5_08.jpg' (248 KB)
Preview of image 'elements of geology5_08.jpg'
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On 13/07/2013 1:13 PM, Thomas de Groot wrote:
> Next, with the hammer and some flying dust.
>
Nice composition too. It makes me want to shout out to him.
--
Regards
Stephen
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Thomas de Groot <tho### [at] degrootorg> wrote:
> Do you have the pick or shovel model?
The pick model, just like the one in your most recent rendering, only less rusty
;)
My brother did happen to find me an old army spade. Great tool; the shovel part
folds back into the wooden handle, so it just barely fits into my backpack. My
prospecting toolkit now has four implements: rock hammer; shovel; flat head
screwdriver; screen (1/4" carpenter's cloth + narrow steel rods for edge
support). All that extra weight means I'm going to need a backpack frame,
though. Don't know if I should buy one or make one yet... I might go with an
Alice pack, like the ones the US military uses.
> I am not going much places anymore these days...
That's a shame! You've got to get out there sometime :)
> I am indeed also using a max_gradient of 10 in my scene.
Oftentimes I can get away with a max_gradient of 1 or 2. POV-Ray usually
suggests values much higher than those which are really needed.
> After a quick test, I see that I can get away with a much lower count
> value. In general, I think I am using too high radiosity settings in my
> scenes as I generally leave them at settings I consider as my defaults...
Makes all the difference in the world. For isosurface scenes I begin with a
count of 1 and work my way up if needed, usually up to 16.
Whats up with importance sampling, BTW? I thought it would allow you to
effectively use a lower count for specified objects in a scene, but my tests
didn't seem to support that notion. It would be nice to force isosurfaces to
render with lower rad counts than other objects.
> Next, with the hammer and some flying dust.
Nice! I love the irony :)
That reminds me, just this week I was playing with Blender's smoke simulation. I
have now managed to get smoke from Blender to actually render in POV-Ray. (I
think somebody was asking about that very same thing awhile ago in p.general,
but explaining my process is probably going to require a tutorial, and I'm not
up for that right now.)
Sam
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On 13-7-2013 22:18, Samuel Benge wrote:
> Thomas de Groot <tho### [at] degrootorg> wrote:
>> Do you have the pick or shovel model?
>
> The pick model, just like the one in your most recent rendering, only less rusty
> ;)
>
> My brother did happen to find me an old army spade. Great tool; the shovel part
> folds back into the wooden handle, so it just barely fits into my backpack. My
> prospecting toolkit now has four implements: rock hammer; shovel; flat head
> screwdriver; screen (1/4" carpenter's cloth + narrow steel rods for edge
> support). All that extra weight means I'm going to need a backpack frame,
> though. Don't know if I should buy one or make one yet... I might go with an
> Alice pack, like the ones the US military uses.
Those spades are great indeed. I had one too. It can also be fixed
perpendicular to the handle for shovelling sand rapidly.
I need to model a backpack now...
>
>> I am not going much places anymore these days...
>
> That's a shame! You've got to get out there sometime :)
Oh well. I have done my lot of travelling over the world. Nowadays I am
just content to watch other people going places. ;-)
>> Next, with the hammer and some flying dust.
>
> Nice! I love the irony :)
<grin>
>
> That reminds me, just this week I was playing with Blender's smoke simulation. I
> have now managed to get smoke from Blender to actually render in POV-Ray. (I
> think somebody was asking about that very same thing awhile ago in p.general,
> but explaining my process is probably going to require a tutorial, and I'm not
> up for that right now.)
All the more reasons for me to get a grip on Blender. :-)
Thomas
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On 13-7-2013 14:33, Stephen wrote:
> On 13/07/2013 1:13 PM, Thomas de Groot wrote:
>> Next, with the hammer and some flying dust.
>>
>
> Nice composition too. It makes me want to shout out to him.
>
>
He won't listen, I know. ;-)
Thomas
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