On 7-8-2016 0:28, Stephen wrote:
> On 8/6/2016 8:40 PM, Bald Eagle wrote:
>> This looks like a very cool project, and I like the results so far.
>>
>
> Thanks, that's good to know. The more I work on it. The more I see what
> is wrong with it.

Ha! How true. It's a curse ;-)

>
>> Perhaps the dragon may look / show up better if the emission tapered
>> off in a
>> gradient as it moved away from the camera.   Think of it as a slightly
>> darker
>> background media for a slightly brighter foreground media.
>>
>> I think you could just define a z-gradient and rotate it based on the
>> camera
>> location relative to the origin. If you need that equation, I can dig
>> it up from
>> one of my scenes.
>>
>
> I see what you mean. It is a good suggestion. Although I think that is a
> refinement that must come at a later stage.
> Thomas and I have a few integration points to discuss. For instance If
> we are both using media then we have to use a common scale in Pov units.
> And it is often hard to to make one media container inside a larger
> media container not obvious. Then there is the problem that I am using a
> PovRay modeller that only supports 3.6 syntax. Although I can use 3.7
> syntax with a workaround. It will not make reading the SDL easy.
> Thomas and I have both used Moray which uses a different coordinate
> system to PovRay. It used Z axis is up. Whereas, as you know PovRay is Y
> axis is up. We have to see how the scenes fit together first.
> (I am just jotting down a few points that come to mind)
>

We have indeed some issues to discuss not in the least the media scale 
used. Also, we may need indeed to test how the nested containers are 
going to show up.

I posted an image of Bellona with the bridge and river in place. No 
nested containers there as I restricted the atmosphere to just above the 
water surface (the water is a media) and just below the clouds container.

The foreground is where I imagine the Scorpions to be and we need to 
consider their scale with regards to the environment.

Much to do but exciting!

This may perhaps help already: the media used for the atmosphere:

//start code
#declare AtmosScale = <10, 10, 10>;
#declare Atmosphere =
union {
   //clouds:
   //clouds media here.

   //atmospheric haze:
   difference {
     sphere {0, 490}
     plane {y, -0.749}
     hollow
     material {
       texture {pigment {color rgbt 1}}
       interior {
         media {
           intervals 1
           samples 50
           scattering {5, rgb <1,1,1>*0.03/AtmosScale
             eccentricity 0.4
           }
           density {
             spherical
             colour_map {
               [0 rgb 0]
               [1 rgb 1]
             }
           }
         }
       }
     }
   }

   scale AtmosScale
   rotate 50*z
   scale <5, 1.0, 5>
   rotate 45*y
}

//end code

-- 
Thomas

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