Le 13-08-20 16:27, Le_Forgeron a écrit :
> Le 20/08/2013 22:09, Alain nous fit lire :
>> Le 13-08-19 15:00, Bald Eagle a écrit :
>>
>>> (I've thought about having a "dual render" - where the scene is
>>> rendered without
>>> any interfering stuff, and then a second render is automatically
>>> called from
>>> within the SDL at the end of the first render - is this possible?)
>>>
>>
>
> That sound a bit like the portal pattern. (or viewport ? I do not
> remember exactly, it was some experimental stuff a long time ago)
>
> What I do not get (yet ?), what is in the file generated by the render ?
>
>
>> Not possible strictly from the SDL itself.
>>
>> What you need for that is to use an ini file that will render the
>> original scene, then, set some control variable(s) to render the second
>> scene.
>> With that, the two renders can have different resolutions and aa
>> settings if it's not rendered as an animation but as two separate
>> images. You'll need to explicitely give an image name for at least one
>> of the renders.
>>
>>
>> Alain
>
> With 3.7, you should search for clockless animation (+kla, with multiple
> cameras definition, and so far you need also realtime raytracing with
> +rtr). It disables file saving, so it might not be very useful so far.
>
>> http://wiki.povray.org/content/Documentation:Windows_Section_1#Clockless_Animation
>
>

The task is to have a render of the scene proper, then, another from 
possibly another point of view showing additional things: Axis, a camera 
place holder, thin cylinders showing the camera's field of view, the 
location of the various lights with cones showing spot_light 
illumination area, some informative text,...

This requires a new parsing of the scene.

It's not possible possible using clockless or real time animation as 
those require that the only change is the camera.

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