> Warp<war### [at] tagpovrayorg>  wrote:
>> W0RLDBUILDER<nomail@nomail>  wrote:
>>> I have an idea for a random starfield but I have no idea how I'm going to pull
>>> it off. My idea is to start out with a sphere filled with emissive media, then
>>> scatter hundreds of them around the scene out to a certain distance. The only
>>> problem is, how am I supposed to place 500 sphere objects randomly using
>>> rand.inc?
>>
>>    You don't need rand.inc for that. You can do something like:
>>
>> #declare Star = /* your star object here */;
>>
>> #declare Amount = 500;
>> #declare Seed = seed(0); // Try integer values other than 0 for other
>>                           // distributions
>> #declare MinExtent =<-100, -100, -100>;
>> #declare MaxExtent =<100, 100, 100>; // Modify as desired
>>
>> #declare Index = 0;
>> #while(Index<  Amount)
>>    object
>>    { Star
>>      #declare RandVector =<rand(Seed), rand(Seed), rand(Seed)>;
>>      translate MinExtent + (MaxExtent - MinExtent) * RandVector
>>    }
>>    #declare Index = Index + 1;
>> #end
>>
>> --
>>                                                            - Warp
>
> Thanks. Would that work if I copy/pasted it several times for different types of
> stars?
>
>
Yes, just don't copy this statement, or change the value:
#declare Seed = seed(0);

If you copy it, you'll reinitialise the random stream and all new 
objects will land in exactly the same locations as the previous ones.



Alain

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