[Bf-committers] Gravity under Smoke does opposite than tooltip says

[Janne Karhu]

The density of the flow object defines the initial density of the smoke  
that's created (from each particle). The new density (previously  
"gravity") setting of the domain defines how much the current density at  
any point of the smoke effects upwards force at that point. Similarly the  
flow object gives the smoke some initial heat (which changes during the  
simulation), and the "heat" setting of the domain defines how much the  
heat difference to the ambient temperature effects the upwards force of  
the smoke at that point.

janne

On Mon, 08 Nov 2010 13:26:20 +0200, Damir Prebeg <blend.factory at gmail.com>  
wrote:

> When you say "..how much the density..." do you mean on Density setting  
> on
> Flow object?
>
> Regarding parameter name, Gravity could be called Smoke Weight or  
> something
> similar...
>
> On 8 November 2010 12:09, Janne Karhu <jhkarh at gmail.com> wrote:
>
>> Hmm, indeed this is not very logical. The "gravity" and "heat"  
>> parameters
>> actually change how much the density and heat of the smoke effect the
>> motion of the smoke, so they're not directly connected to gravity. I'll
>> change the parameter name and add a bit more descriptive tooltips to  
>> both
>> of the parameters.
>>
>> janne
>>
>> On Mon, 08 Nov 2010 10:54:36 +0200, Damir Prebeg  
>> <blend.factory at gmail.com>
>> wrote:
>>
>> > Don't know should I post this as a bug or this is just typing error?
>> > Tooltip
>> > says
>> > "Higher value results in sinking smoke" but setting it self does  
>> exactly
>> > opposite.
>> >
>> > But on the side of that, why gravity setting of Smoke system isn't
>> > consistent with scene gravity?
>> > I mean, min/max value of smoke gravity is -+5.0 and a default setting  
>> is
>> > -0.0010.
>> > Shouldn't that bee -+ 200 and default value -9.81?
>> > _______________________________________________
>> > Bf-committers mailing list
>> > Bf-committers at blender.org
>> > http://lists.blender.org/mailman/listinfo/bf-committers
>> _______________________________________________
>> Bf-committers mailing list
>> Bf-committers at blender.org
>> http://lists.blender.org/mailman/listinfo/bf-committers
>>
> _______________________________________________
> Bf-committers mailing list
> Bf-committers at blender.org
> http://lists.blender.org/mailman/listinfo/bf-committers