Le 16-05-18 07:46, Stephen a écrit :
> On 5/18/2016 12:26 PM, Thomas de Groot wrote:
>> On 18-5-2016 11:38, Stephen wrote:
>
>>>>
>>>> Indeed! The df3 way is a good one. If you remember, I used the
>>>> technique
>>>> for making ghostly material figures a couple of years ago.
>>>>
>>>
>>> No, I cannot remember. Would you post a link?
>>
>>
http://news.povray.org/povray.binaries.images/thread/%3C5246ef8f%40news.povray.org%3E/?ttop=408176&toff=450&mtop=387104
>>
>>
>>
>
> I missed that.
> How did you make the df3 file? I take images in an animation of a box
> slicing the object. Then stitching them into a df3 using tga3df3. It is
> a bit time consuming and the layers are obvious.
>
>

You can reduce the obviousness of the layers by using interpolation.
In many cases, linear interpolation is enough. If you use tricubic 
interpolation, be sure that you have a non-zero background to prevent 
the artefacts caused by negative intermediate values that tend to be 
interpreted as large positive values.

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