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11 Aug 2022 09:42:39 EDT (-0400)
  A special texture with circle (Message 15 to 24 of 24)  
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From: Bald Eagle
Subject: Re: A special texture with circle
Date: 24 May 2022 13:30:00
Message: <web.628d15b01ed36dd1f9dae3025979125@news.povray.org>
MichaelJF <fri### [at] t-onlinede> wrote:

> Since the functions given by And are constant in direction z, with an
> isosurface the container will limit the functions in this direction. So,
> I thought a sphere would look better than a box as container.

Now that's pretty cool - it almost looks like one of those sci-fi "city-planets"
kinda like "Dark City" or something like that.


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From: Thomas de Groot
Subject: Re: A special texture with circle
Date: 25 May 2022 02:04:27
Message: <628dc6eb$1@news.povray.org>
Op 24/05/2022 om 18:56 schreef MichaelJF:
> Simply, I could not resist;)
> 
> isosurface {
>     function { f_result2(x,y) }
>     contained_by { sphere { <0,0,0>,5 } }
>     threshold 0.75
>     max_gradient 1000
>     pigment { color Cyan }
> 
>     rotate <60,0,0>
>     scale 5
> }
> 
> 
> Since the functions given by And are constant in direction z, with an 
> isosurface the container will limit the functions in this direction. So, 
> I thought a sphere would look better than a box as container.
> 

LOL! Yes, even better!

-- 
Thomas


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From: jr
Subject: Re: A special texture with circle
Date: 25 May 2022 11:00:00
Message: <web.628e43b61ed36dd879e196a6cde94f1@news.povray.org>
hi,

MichaelJF <fri### [at] t-onlinede> wrote:
> ... So,
> I thought a sphere would look better than a box as container.

it is beautiful, thanks.


regards, jr.


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From: And
Subject: Re: A special texture with circle
Date: 26 May 2022 05:30:00
Message: <web.628f47f31ed36dda93c4999aa81652d@news.povray.org>
MichaelJF <fri### [at] t-onlinede> wrote:
> Simply, I could not resist;)
>
> isosurface {
>     function { f_result2(x,y) }
>     contained_by { sphere { <0,0,0>,5 } }
>     threshold 0.75
>     max_gradient 1000
>     pigment { color Cyan }
>
>     rotate <60,0,0>
>     scale 5
> }
>
>
> Since the functions given by And are constant in direction z, with an
> isosurface the container will limit the functions in this direction. So,
> I thought a sphere would look better than a box as container.
>
> Best regards
> Michael

This looks still planar mapping.


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From: MichaelJF
Subject: Re: A special texture with circle
Date: 26 May 2022 13:02:27
Message: <628fb2a3$1@news.povray.org>
Am 26.05.2022 um 11:27 schrieb And:
> MichaelJF <fri### [at] t-onlinede> wrote:
>> Simply, I could not resist;)
>>
>> isosurface {
>>      function { f_result2(x,y) }
>>      contained_by { sphere { <0,0,0>,5 } }
>>      threshold 0.75
>>      max_gradient 1000
>>      pigment { color Cyan }
>>
>>      rotate <60,0,0>
>>      scale 5
>> }
>>
>>
>> Since the functions given by And are constant in direction z, with an
>> isosurface the container will limit the functions in this direction. So,
>> I thought a sphere would look better than a box as container.
>>
>> Best regards
>> Michael
> 
> This looks still planar mapping.
> 
Sorry, but I have no idea, what "planar mapping" could mean.

Best regards
Michael


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From: And
Subject: Re: A special texture with circle
Date: 27 May 2022 01:50:00
Message: <web.6290664a1ed36dda93c4999aa81652d@news.povray.org>
MichaelJF <fri### [at] t-onlinede> wrote:
> Am 26.05.2022 um 11:27 schrieb And:
> > MichaelJF <fri### [at] t-onlinede> wrote:
> >> Simply, I could not resist;)
> >>
> >> isosurface {
> >>      function { f_result2(x,y) }
> >>      contained_by { sphere { <0,0,0>,5 } }
> >>      threshold 0.75
> >>      max_gradient 1000
> >>      pigment { color Cyan }
> >>
> >>      rotate <60,0,0>
> >>      scale 5
> >> }
> >>
> >>
> >> Since the functions given by And are constant in direction z, with an
> >> isosurface the container will limit the functions in this direction. So,
> >> I thought a sphere would look better than a box as container.
> >>
> >> Best regards
> >> Michael
> >
> > This looks still planar mapping.
> >
> Sorry, but I have no idea, what "planar mapping" could mean.
>
> Best regards
> Michael


I mean it is not a spherical wrapping


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Attachments:
Download 'andscircle.png' (510 KB)

Preview of image 'andscircle.png'
andscircle.png


 

From: MichaelJF
Subject: Re: A special texture with circle
Date: 27 May 2022 13:32:03
Message: <62910b13$1@news.povray.org>
Am 27.05.2022 um 07:48 schrieb And:
> MichaelJF <fri### [at] t-onlinede> wrote:
>> Am 26.05.2022 um 11:27 schrieb And:
>>> MichaelJF <fri### [at] t-onlinede> wrote:
>>>> Simply, I could not resist;)
>>>>
>>>> isosurface {
>>>>       function { f_result2(x,y) }
>>>>       contained_by { sphere { <0,0,0>,5 } }
>>>>       threshold 0.75
>>>>       max_gradient 1000
>>>>       pigment { color Cyan }
>>>>
>>>>       rotate <60,0,0>
>>>>       scale 5
>>>> }
>>>>
>>>>
>>>> Since the functions given by And are constant in direction z, with an
>>>> isosurface the container will limit the functions in this direction. So,
>>>> I thought a sphere would look better than a box as container.
>>>>
>>>> Best regards
>>>> Michael
>>>
>>> This looks still planar mapping.
>>>
>> Sorry, but I have no idea, what "planar mapping" could mean.
>>
>> Best regards
>> Michael
> 
> 
> I mean it is not a spherical wrapping
> 
I can not understand your complaints. I put your two dimensional setting 
into an (three dimensional) isosurface, only. Nothing more. Where is the 
problem?

Best regards,
Michael


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From: Thomas de Groot
Subject: Re: A special texture with circle
Date: 28 May 2022 02:24:44
Message: <6291c02c$1@news.povray.org>
Op 27/05/2022 om 19:32 schreef MichaelJF:
> Am 27.05.2022 um 07:48 schrieb And:
>> MichaelJF <fri### [at] t-onlinede> wrote:
>>> Am 26.05.2022 um 11:27 schrieb And:
>>>> MichaelJF <fri### [at] t-onlinede> wrote:
>>>>> Simply, I could not resist;)
>>>>>
>>>>> isosurface {
>>>>>       function { f_result2(x,y) }
>>>>>       contained_by { sphere { <0,0,0>,5 } }
>>>>>       threshold 0.75
>>>>>       max_gradient 1000
>>>>>       pigment { color Cyan }
>>>>>
>>>>>       rotate <60,0,0>
>>>>>       scale 5
>>>>> }
>>>>>
>>>>>
>>>>> Since the functions given by And are constant in direction z, with an
>>>>> isosurface the container will limit the functions in this 
>>>>> direction. So,
>>>>> I thought a sphere would look better than a box as container.
>>>>>
>>>>> Best regards
>>>>> Michael
>>>>
>>>> This looks still planar mapping.
>>>>
>>> Sorry, but I have no idea, what "planar mapping" could mean.
>>>
>>> Best regards
>>> Michael
>>
>>
>> I mean it is not a spherical wrapping
>>
> I can not understand your complaints. I put your two dimensional setting 
> into an (three dimensional) isosurface, only. Nothing more. Where is the 
> problem?
> 
> Best regards,
> Michael

I think And means that the pattern remains oriented to the y-axis (his 
"planar napping") instead of conforming to the surface of the sphere 
(spherical mapping?).

-- 
Thomas


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From: And
Subject: Re: A special texture with circle
Date: 29 May 2022 10:35:00
Message: <web.629383991ed36ddbf183246aa81652d@news.povray.org>
MichaelJF <fri### [at] t-onlinede> wrote:
> Am 27.05.2022 um 07:48 schrieb And:
> > MichaelJF <fri### [at] t-onlinede> wrote:
> >> Am 26.05.2022 um 11:27 schrieb And:
> >>> MichaelJF <fri### [at] t-onlinede> wrote:
> >>>> Simply, I could not resist;)
> >>>>
> >>>> isosurface {
> >>>>       function { f_result2(x,y) }
> >>>>       contained_by { sphere { <0,0,0>,5 } }
> >>>>       threshold 0.75
> >>>>       max_gradient 1000
> >>>>       pigment { color Cyan }
> >>>>
> >>>>       rotate <60,0,0>
> >>>>       scale 5
> >>>> }
> >>>>
> >>>>
> >>>> Since the functions given by And are constant in direction z, with an
> >>>> isosurface the container will limit the functions in this direction. So,
> >>>> I thought a sphere would look better than a box as container.
> >>>>
> >>>> Best regards
> >>>> Michael
> >>>
> >>> This looks still planar mapping.
> >>>
> >> Sorry, but I have no idea, what "planar mapping" could mean.
> >>
> >> Best regards
> >> Michael
> >
> >
> > I mean it is not a spherical wrapping
> >
> I can not understand your complaints. I put your two dimensional setting
> into an (three dimensional) isosurface, only. Nothing more. Where is the
> problem?
>
> Best regards,
> Michael

Oh, it's no problem.


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From: And
Subject: Re: A special texture with circle
Date: 29 May 2022 10:35:00
Message: <web.629384691ed36ddbf183246aa81652d@news.povray.org>
Thomas de Groot <tho### [at] degrootorg> wrote:
> Op 27/05/2022 om 19:32 schreef MichaelJF:
> > Am 27.05.2022 um 07:48 schrieb And:
> >> MichaelJF <fri### [at] t-onlinede> wrote:
> >>> Am 26.05.2022 um 11:27 schrieb And:
> >>>> MichaelJF <fri### [at] t-onlinede> wrote:
> >>>>> Simply, I could not resist;)
> >>>>>
> >>>>> isosurface {





> >>>>>


> >>>>> }
> >>>>>
> >>>>>
> >>>>> Since the functions given by And are constant in direction z, with an
> >>>>> isosurface the container will limit the functions in this
> >>>>> direction. So,
> >>>>> I thought a sphere would look better than a box as container.
> >>>>>
> >>>>> Best regards
> >>>>> Michael
> >>>>
> >>>> This looks still planar mapping.
> >>>>
> >>> Sorry, but I have no idea, what "planar mapping" could mean.
> >>>
> >>> Best regards
> >>> Michael
> >>
> >>
> >> I mean it is not a spherical wrapping
> >>
> > I can not understand your complaints. I put your two dimensional setting
> > into an (three dimensional) isosurface, only. Nothing more. Where is the
> > problem?
> >
> > Best regards,
> > Michael
>
> I think And means that the pattern remains oriented to the y-axis (his
> "planar napping") instead of conforming to the surface of the sphere
> (spherical mapping?).
>
> --
> Thomas


Oh, that is just an idea of mine.


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