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I am trying to make an hourglass and I cannot get the settings right.
Would some kind person give me some starting values for a realistic
looking sandglass? Or suggest another method as I have never managed to
work successfully with blobs.
--
Regards
Stephen
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Stephen <mca### [at] aol com> wrote:
> I am trying to make an hourglass and I cannot get the settings right.
> Would some kind person give me some starting values for a realistic
> looking sandglass? Or suggest another method as I have never managed to
> work successfully with blobs.
An hourglass shape is much easier to achieve with the sor object.
--
- Warp
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Greetings,
Le 13/10/2012 15:04, Stephen nous fit lire :
> I am trying to make an hourglass and I cannot get the settings right.
> Would some kind person give me some starting values for a realistic
> looking sandglass? Or suggest another method as I have never managed to
> work successfully with blobs.
>
Why did you choose blob ?
Have a look in the portfolio the o_shapesq12: the Lemniscate.
Or in scenes/objects/quartic/lemnisca.pov
and scenes/objects/quartic/lemnisc2.pov
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On 13-10-2012 15:31, Warp wrote:
> An hourglass shape is much easier to achieve with the sor object.
>
...and for the sand inside, you can use sor too.
(lathe is another option)
Thomas
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On 13/10/2012 2:39 PM, Le_Forgeron wrote:
> Why did you choose blob ?
>
It just seemed the right object, for a blown glass shape, to me.
> Have a look in the portfolio the o_shapesq12: the Lemniscate.
>
I did, or rather I tried the function f_lemniscate_of_gerono(x,y,z, P0).
But the halves come together at a point, making it hard for the sand to
get through. ;-)
A good suggestion if I did not want a close shot.
--
Regards
Stephen
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On 13/10/2012 2:31 PM, Warp wrote:
> Stephen <mca### [at] aolcom> wrote:
>> I am trying to make an hourglass and I cannot get the settings right.
>> Would some kind person give me some starting values for a realistic
>> looking sandglass? Or suggest another method as I have never managed to
>> work successfully with blobs.
>
> An hourglass shape is much easier to achieve with the sor object.
>
Duh! I did not even think of that. It would have been the first thing I
thought of a couple of years ago.
Thanks.
--
Regards
Stephen
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On 13/10/2012 2:51 PM, Thomas de Groot wrote:
>>
>
> ....and for the sand inside, you can use sor too.
>
The glass will be lying on its side, so we will see.
> (lathe is another option)
Probably a better one as it uses splines.
--
Regards
Stephen
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Le 13/10/2012 16:08, Stephen nous fit lire :
> On 13/10/2012 2:39 PM, Le_Forgeron wrote:
>> Why did you choose blob ?
>>
>
> It just seemed the right object, for a blown glass shape, to me.
>
>> Have a look in the portfolio the o_shapesq12: the Lemniscate.
>>
>
> I did, or rather I tried the function f_lemniscate_of_gerono(x,y,z, P0).
> But the halves come together at a point, making it hard for the sand to
> get through. ;-)
>
> A good suggestion if I did not want a close shot.
Merge it with a small cylinder where it is not thick enough (and I have
a preference for the quartic form, probably my old age)
something along:
difference {
merge {
outer_lemniscate
cylinder_at_point
}
inner_lemniscate
material { glass... }
}
For once, the point of the lemniscate seems good for the bottleneck (or
you can also add a cylinder too.
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On 13/10/2012 4:09 PM, Le_Forgeron wrote:
> Merge it with a small cylinder where it is not thick enough (and I have
> a preference for the quartic form, probably my old age)
An excellent suggestion but I will "'fess up".
I use a modeller that does not support quartics and although I could
include the code. This is supposed to be a quick and dirty image, so I
will stick with using lathes. (Probably my old age)
--
Regards
Stephen
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Stephen <mca### [at] aolcom> wrote:
> I am trying to make an hourglass and I cannot get the settings right.
> Would some kind person give me some starting values for a realistic
> looking sandglass? Or suggest another method as I have never managed to
> work successfully with blobs.
>
> --
> Regards
> Stephen
As ever a good starting point is the old IRTC. First topic was "time" and
contained at least four useable hourglasses. (What means the POV-code is quite
running without bigger efforts.) There was another one later, but I cannot find
it so soon. As I think you are interested in quick solutions ;-), maybe this
hint helps. Of course all other proposed ideas here are quit right.
Best regards,
Michael
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