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Am 09.07.2017 um 18:24 schrieb Norbert Kern:
> Fresnel lets the iridescence disappear
What?
It shouldn't do that.
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clipka <ano### [at] anonymous org> wrote:
> Am 09.07.2017 um 18:24 schrieb Norbert Kern:
>
> > Fresnel lets the iridescence disappear
>
> What?
> It shouldn't do that.
Then - try this replacement of the terminal part of code in message 1.
You will recieve pure dark grey (rgb 0.05).
Norbert
#declare RotBox =
object {
RoundBox () scale 1.2
rotate <45,0,35>
}
merge {
object {RotBox scale 0.9}
object {RotBox translate <1,0,0>}
object {RotBox translate <-1,0,0>}
object {RotBox translate <0,1,0>}
object {RotBox translate <0,-1,0>}
object {RotBox translate <0,0,2.5>}
object {RotBox translate <0,0,-2.5>}
hollow
pigment {color rgb 0.001}
finish {
reflection {1 fresnel on}
irid {0.05 thickness 0.315}
}
rotate 90*x
}
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clipka <ano### [at] anonymousorg> wrote:
> What?
> It shouldn't do that.
are always being interrupted by somebody doing it.'
:D
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On 7/10/2017 5:23 PM, Bald Eagle wrote:
> clipka <ano### [at] anonymousorg> wrote:
>
>> What?
>> It shouldn't do that.
>
> 'Things move along so rapidly nowadays that people saying: “It can’t be done,”
> are always being interrupted by somebody doing it.'
>
A wise saying oh! Grasshopper. But the rice paper still proves a
challenge. :)
--
Regards
Stephen
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Stephen <mca### [at] aolcom> wrote:
> A wise saying oh! Grasshopper. But the rice paper still proves a
> challenge. :)
> Regards
> Stephen
Keep practicing, Drunken Master. ;)
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On 7/10/2017 9:50 PM, Bald Eagle wrote:
> Stephen <mca### [at] aolcom> wrote:
>
>> A wise saying oh! Grasshopper. But the rice paper still proves a
>> challenge. :)
>
>> Regards
>> Stephen
>
> Keep practicing, Drunken Master. ;)
>
And the more I practice the drunkener I get. :)
--
Regards
Stephen
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> clipka <ano### [at] anonymousorg> wrote:
>> Am 09.07.2017 um 18:24 schrieb Norbert Kern:
>>
>>> Fresnel lets the iridescence disappear
>>
>> What?
>> It shouldn't do that.
>
>
>
> Then - try this replacement of the terminal part of code in message 1.
> You will recieve pure dark grey (rgb 0.05).
>
> Norbert
>
>
>
>
> #declare RotBox =
> object {
> RoundBox () scale 1.2
> rotate <45,0,35>
> }
>
> merge {
> object {RotBox scale 0.9}
> object {RotBox translate <1,0,0>}
> object {RotBox translate <-1,0,0>}
> object {RotBox translate <0,1,0>}
> object {RotBox translate <0,-1,0>}
> object {RotBox translate <0,0,2.5>}
> object {RotBox translate <0,0,-2.5>}
> hollow
> pigment {color rgb 0.001}
> finish {
> reflection {1 fresnel on}
> irid {0.05 thickness 0.315}
> }
> rotate 90*x
> }
>
>
>
If there is no ior, or an ior of 1, fresnel reflection result in NO
reflection at all. Fresnel reflection depend on a change of ior at the
surface.
So, in this example, you NEED the iors.
No fresnel and no thansparency = ior have no effect.
Fresnel reflection ABSOLUTELY NEED an ior <> 1, normally larger than 1.
And, obviously, ior is essential if you want any refraction.
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"Norbert Kern" <nor### [at] t-onlinede> wrote:
>
> Here's another image of Christian Perle (with revised code, I hope).
>
That is a really stunning and gorgeous image. I haven't seen anything like it
before. Thanks for posting it, AND your revised code.
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On 10-7-2017 23:57, Stephen wrote:
> On 7/10/2017 9:50 PM, Bald Eagle wrote:
>> Stephen <mca### [at] aolcom> wrote:
>>
>>> A wise saying oh! Grasshopper. But the rice paper still proves a
>>> challenge. :)
>>
>>> Regards
>>> Stephen
>>
>> Keep practicing, Drunken Master. ;)
>>
>
> And the more I practice the drunkener I get. :)
>
This sounds almost like a verse by Li Bai, also known in the West as Li
Tai Po :-)
--
Thomas
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On 7/11/2017 7:40 AM, Thomas de Groot wrote:
> On 10-7-2017 23:57, Stephen wrote:
>> On 7/10/2017 9:50 PM, Bald Eagle wrote:
>>> Stephen <mca### [at] aolcom> wrote:
>>>
>>>> A wise saying oh! Grasshopper. But the rice paper still proves a
>>>> challenge. :)
>>>
>>>> Regards
>>>> Stephen
>>>
>>> Keep practicing, Drunken Master. ;)
>>>
>>
>> And the more I practice the drunkener I get. :)
>>
>
> This sounds almost like a verse by Li Bai, also known in the West as Li
> Tai Po :-)
>
Indeed it could be but it is a thought from that great Glasgow poet,
philosopher and aesthetic, Lobby Dosser.
Holding court in Wine Ally he would put the world to rights.
Alas! The time has been and past and are all of a memory.
As, is right of all things been and past.
--
Regards
Stephen
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