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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