[sldev] Hacking the wind

[Tigro Spottystripes]

just changing the force for all flexies with llSetLinkPrimitiveParams
wouldn't give the effect you want? or there are some prims in the
linkset that aren't flexies?

Vector Hastings escreveu:
> thank you sooo much Sheet. This is very helpful.
>
> I probably need to noodle on which way to go with the value, a constant will
> be easy but crude, and might help my current circumstance.
>
> Ultimately I'd like to cue the wind to blow an actress' hair at just the
> right moment. So I have to think out how to communicate the right moment to
> the viewer.
>
> Thanks again,
>
> Vector
>
> -----Original Message-----
> From: Sheet Spotter [mailto:sheet.spotter at gmail.com]
> Sent: Saturday, July 25, 2009 3:18 PM
> To: 'Vector Hastings'
> Subject: RE: [sldev] Hacking the wind
>
>
> All of the comments below are based on the source code from Linden Lab's
> Snowglobe viewer. The Snowglobe viewer is very similar to their main viewer,
> so all of the same comments should apply to the main viewer.
>
> Wind effects on flex-prims are likely added in this line...
>     mSection[i].mPosition += gAgent.getRegion()->mWind.getVelocity(
> mSection[i].mPosition ) * wind_factor;
>
> ...in the LLVolumeImplFelxible::doFlexibleUpdate method within the
> "indra/newview/llfexibleobject.cpp" file.
>
> If you want the wind to have a constant velocity and direction you could try
> replacing the "gAgent.getRegion()->mWind.GetVelocity(mSection[i].mPosition)"
> portion with a constant.
>
> The only place I could find that modified the wind value for the region was
> this line...
>     datap->mRegionp->mWind.decompress(bit_pack, &goph);
> ...in the LLVLManager::unpackData method within the
> "indra/newview/llvlmanager.cpp" file. Modifying this line would ensure the
> same wind effect applied to every type of object (flexi, sky, trees, etc.).
>
> If you wanted to get really fancy, you might even be able to do cool tricks,
> like simulate a tornado. LOL
>
> I hope this helps. Enjoy!
>
>
> Sheet Spotter
>
>
> -----Original Message-----
> From: Vector Hastings [mailto:vector at leafpile.com]
> Sent: July 25, 2009 4:07 PM
> To: Sheet Spotter
> Subject: RE: [sldev] Hacking the wind
>
> Great, Thanks.
>
> Knowing what to look for is half my battle.
>
> I'm trying to control the direction flexi-prims are waving (hair and flags
> for filming machinima).
>
> Thanks again,
>
> Vector
>
> -----Original Message-----
> From: Sheet Spotter [mailto:sheet.spotter at gmail.com]
> Sent: Saturday, July 25, 2009 12:09 PM
> To: 'Vector Hastings'
> Subject: RE: [sldev] Hacking the wind
>
>
> A global search through the code for "gWindVec" identified a few interesting
> areas of the code. A search for "mWind" found other interesting areas.
>
> It depends really on what you are trying to achieve.
>
>
> Sheet Spotter
>
> -----Original Message-----
> From: sldev-bounces at lists.secondlife.com
> [mailto:sldev-bounces at lists.secondlife.com] On Behalf Of Vector Hastings
> Sent: July 25, 2009 5:23 AM
> To: Second Life Developer Mailing List
> Subject: [sldev] Hacking the wind
>
> Does anyone know where wind direction and speed could be hacked in the
> viewer?
>
> Thanks to any and all,
>
> Vector
>
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