On 6/15/2017 4:04 PM, Ari wrote:
> Hi folks, I am new to the software and this community. I am a year 1 engineer
> and am recently required to learn this software.

Ah! ha! the evil professor strikes again. :)


> So far, I could do some very
> simple coding work only and my aim is to make a code to generate a scene
> consisting of numerous sand grains like
>
http://news.povray.org/povray.binaries.images/attachment/%3C4d98c518%40news.povray.org%3E/27841-grains.jpg

It would gave been better if you had posted the link to the thread. That 
way the answer might be in it. Or at least a good clue.

> Could anyone tell me how to stack some objects without them being overlapping
> like the picture above? Besides, how could I approach to generate such code
> (using array? rand? or any other?) Thank you!
>

What you will want to use is the trace command to find out the distance 
to the object below. You also might want to use min_extent & max_extent 
to return the minimum and maximum coordinates of a #declared object's 
bounding box. ( <-- straight from the help file :-) )

It is not trivial what you want to do, btw.
I am sure you will get help here in the form of general pointers to help 
you work it out. :-)
Remember your evil professor may be reading this thread. ;-)

-- 

Regards
     Stephen

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