Le 17-12-19 à 07:12, Stephen a écrit :
> On 19/12/2017 03:12, Masaki  wrote:
>> Thanks for the reply.
>> I have some new questions.
>>
>>> There are a couple of things wrong with your scene. First, your lights
>>> and objects are inside the Prism. So you will not see anything.
>> (1) Does it mean that I can not see the light from the outside of the 
>> prism when
>> there is a light source in the prism which is transparent object?
>>
>>
> If the object is transparent or filtered then the light will shine 
> through. By the amount of transparency or filter value.
> 
>> (2) In pov-ray, is it possible for the camera to visualize the direct 
>> light from
>> the source?
> 
> In the camera use Point_at and point your camera at the light's location.

The light source will still not show.

> 
> 
>> I want to acquire the conical surface light through the prism object 
>> directly.
>>
>> Regards
>>          Masaki
>>
>>
>>
>>
> 
>

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