[Bf-funboard] Shadow casting particles

[car]

If you put two particles or for that matter two meshes with the same 
texture together they will share the sam texture space and will sort of 
'blob' together .  But the question then is why can particles not just 
be fixed to have shadows as an option ? Like who cares what the theory 
is behind them, just let them have shadows as a button.. Would be 
helpful.

But I don't want to start a fight. Besides all of the particules in OT 
programs I have seen no longer use halos they use textured planes that 
can change color falloff size and dynamics to make realistic effects 
like flame and water



On Dec 20, 2004, at 8:35 AM, Robert Wenzlaff wrote:



> On Monday 20 December 2004 07:49, joeedh wrote:
>
>>> If you are using shaded halos to do something like smoke, you can 
>>> always
>>> duplicate your emitter, parent and duplivert a mesh to it, and set 
>>> it to
>>> shadow only.
>>>
>>>
>>
>> Halos are meant to emulate spherical volumetric space, right?  So just
>> input to the raytrace the equation for a sphere to do your shadow
>> calculation.
>>
>
> Well, halos were a more-or-less a post-process step in the original 
> renderer,
> they are integrated in the unified renderer though.  But either way, it
> should be theoretically possible to have a halo cast a shadow.  The 
> problem
> lies in how halos are typically used.  Typically you set halo 
> particals to
> have a very very low alpha.  They only become visible where a large 
> number of
> them overlap (the add parameter).   This might be ok for raytraced 
> shadows
> where alpha can be accounted for, but would give awful results with 
> buffered
> shadows.
>
> But again, I'm not sure what the original poster meant.  His "known 
> for ages"
> and "appear as a fuzzy blob" lines don't jive.
> -- 
> *********************************************
> Robert Wenzlaff   rwenzlaff at soylent-green.com
>
> _______________________________________________
> Bf-funboard mailing list
> Bf-funboard at projects.blender.org
> http://projects.blender.org/mailman/listinfo/bf-funboard
>