On 4/3/2016 12:20 PM, Thomas de Groot wrote:
> On 3-4-2016 10:18, Stephen wrote:
>> On 4/3/2016 7:54 AM, Thomas de Groot wrote:
>>>
>>> I may be missing something here, but is animation not very easy? just
>>> rotate the inner cylinder. Essentially, the whole structure consists of
>>> two moving semitransparent, superposed, image_maps.
>>>
>>>
>>
>> Probably not. But it is mumble, mumble years since I have seen one and
>> was not sure how the effect was created. I thought that the glass
>> cylinders might have been moulded to give local lenses on the inside.
>
> Hmm... that is an interesting approach I had not thought about. Variable
> thickness of the inner cylinder might certainly be an interesting effect.
>
>>
>> Will the illusion work with computer graphics using planer images?
>> What sort of masking is needed for the images and what frame rate to
>> use? These questions I will need to find an answer to.
>> I think that this might distract me from Elite Dangerous, for a while.
>> :-)
>>
>
> Good. It will keep you from grave mischief in the digital world. I may
> want to explore a bit about superposition of images and such, without
> the animation part. I think that ior and photons should be involved too
> in the end.
>

Proof of concept.
It needs more work on the inner cylinder* and the masking.
It is short and cyclic. Probably better to download it and watch it looping.

https://youtu.be/21Tb8_HIDp8


* Not that there are cylinders, it is planer.


-- 

Regards
     Stephen

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