On 2011-11-15 10:07, Stephen wrote:

>
>> I thought the smaller spheres should be 45% visible on the biger sphere,
>> but they are not.
>>
>> I can not find my failure
>>
>
> Where is your camera?
>
> They are visible to me when my camera is:
>
> camera {
> perspective
> location <-0.891,7.168,-594.751>
> up y
> right 1.333*x
> angle 33.000
> sky <-0.000,1.000,-0.020>
> look_at < 0.449, 18.943, 0.102 >
> }

more in the - in the z axis, here the szene
was for a 12 second scene, where 4 Perry Rhodan style spaceships
fly, Earth and Moon in the background

BTW, it's so different from SF movies.
In SF movies are spaceships always lighted from all sides to
be good visible.

#declare t_metall = texture
{
   pigment { color red 0.51 green 0.69 blue 0.70 }
   finish
   { brilliance 8.0
     phong 1.0
     phong_size 80
     reflection 0.75
     ambient 0.01
   }
}


#declare terra_class = union
{
   sphere { <0,0,0> 100 }
   sphere { <70,0,-70> 8 rotate <0,0, 15> }
   sphere { <70,0,-70> 8 rotate <0,0, 75> }
   sphere { <70,0,-70> 8 rotate <0,0,135> }
   sphere { <70,0,-70> 8 rotate <0,0,195> }
   sphere { <70,0,-70> 8 rotate <0,0,255> }
   sphere { <70,0,-70> 8 rotate <0,0,315> }
   torus { 92.5 20   rotate <90 0 0> }
   texture { t_metall }

// 2011-11-15 change scale from m to km
   scale <0.001, 0.001, 0.001 >
}


#declare start_point = -499950;
#declare speed = 6;

object { terra_class translate < 0.6, 0.1, start_point +  0 - clock * 
speed> }
object { terra_class translate <-0.6,-0.1, start_point +  5 - clock * 
speed> }
object { terra_class translate < 0.2,-0.1, start_point + 10 - clock * 
speed> }
object { terra_class translate <-0.2, 0.1, start_point + 15 - clock * 
speed> }


object
{ sphere  { <0,0,0> 12757/2 }
   pigment { image_map { png "map-earth.png" map_type 1 interpolate 2 } }
   finish  { ambient 0 }
   rotate  < 0, -30, 0 >
   translate <-8000,0,0>
}  // object


object
{ sphere  { <0,0,0> 3467/2 }
   pigment { image_map { png "map-moon.png" map_type 1 interpolate 2 } }
   finish  { ambient 0 }
   rotate  < 0, 90, 0 >
   translate <3500,0,-380000>
}  // object

light_source { <-149000000, 0, 0> color <1 1 1> } // light_source
light_source { <-149000000, 0, 0> color <1 1 1> } // light_source
light_source { <-149000000, 0, 0> color <1 1 1> looks_like { sphere { 
<0,0,0> 1350000/2 color <1,1,1> } } } // light_source

camera
{ location <0, 0, -500000>
   direction <0 0 1>
   up <0 1 0>
   sky <0 1 0>
   right <16/9, 0, 0>
   look_at <0 0 0>
   angle 4
}  // camera

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