and put a ParticleDrag node before the ParticleTurbalence. You can the use the 'probability' under the Conditions tab of the Turbulence to control the effect quite effectiviley.
The steps for controllable Turbulence: Emitting Geo node Particle Emitter node- setting a mass>50 Particle drag node - values set to 1 Particle Turbulence node- set probability to 1, design the look; the viewer handles that control the effect are quite cool, but try to avoid the Offset one!- it goes crazy, this then set the 'nature' of the turbulence, then pull back the Probability to effect the particles more or less. Hope that works. Marty On 7 October 2012 10:05, Marten Blumen <[email protected]> wrote: > More testing. try setting the mass of the particles to a large amount >50. > The ParticleTurbulence is adding a force and a greater particle mass > dampers the turbulent effect. > > > On 2 October 2012 05:23, Marten Blumen <[email protected]> wrote: > >> Procedual Noise works. >> >> set cut_paste_input [stack 0] >> version 7.0 v1b58 >> CheckerBoard2 { >> inputs 0 >> name CheckerBoard1 >> selected true >> xpos -665 >> ypos -198 >> } >> Reformat { >> type scale >> scale 0.124 >> pbb true >> name Reformat1 >> selected true >> xpos -665 >> ypos -109 >> } >> push $cut_paste_input >> Card2 { >> rotate {90 0 0} >> control_points {3 3 3 6 >> >> 1 {-0.5 -0.5 0} 0 {0.1666666865 0 0} 0 {0 0 0} 0 {0 0.1666666865 0} 0 {0 >> 0 0} 0 {0 0 0} >> 1 {0 -0.5 0} 0 {0.1666666716 0 0} 0 {-0.1666666716 0 0} 0 {0 0.1666666865 >> 0} 0 {0 0 0} 0 {0.5 0 0} >> 1 {0.5 -0.5 0} 0 {0 0 0} 0 {-0.1666666865 0 0} 0 {0 0.1666666865 0} 0 {0 >> 0 0} 0 {1 0 0} >> 1 {-0.5 0 0} 0 {0.1666666865 0 0} 0 {0 0 0} 0 {0 0.1666666716 0} 0 {0 >> -0.1666666716 0} 0 {0 0.5 0} >> 1 {0 0 0} 0 {0.1666666716 0 0} 0 {-0.1666666716 0 0} 0 {0 0.1666666716 0} >> 0 {0 -0.1666666716 0} 0 {0.5 0.5 0} >> 1 {0.5 0 0} 0 {0 0 0} 0 {-0.1666666865 0 0} 0 {0 0.1666666716 0} 0 {0 >> -0.1666666716 0} 0 {1 0.5 0} >> 1 {-0.5 0.5 0} 0 {0.1666666865 0 0} 0 {0 0 0} 0 {0 0 0} 0 {0 >> -0.1666666865 0} 0 {0 1 0} >> 1 {0 0.5 0} 0 {0.1666666716 0 0} 0 {-0.1666666716 0 0} 0 {0 0 0} 0 {0 >> -0.1666666865 0} 0 {0.5 1 0} >> 1 {0.5 0.5 0} 0 {0 0 0} 0 {-0.1666666865 0 0} 0 {0 0 0} 0 {0 >> -0.1666666865 0} 0 {1 1 0} } >> name Card1 >> selected true >> xpos -545 >> ypos -175 >> } >> push 0 >> ParticleEmitter { >> inputs 3 >> emit_from faces >> lifetime 100 >> velocity 0.082 >> velocity_variation 0.52 >> size 0.01 >> name ParticleEmitter2 >> selected true >> xpos -545 >> ypos -109 >> } >> ParticleGravity { >> to {0 -0.0001 0} >> name ParticleGravity1 >> selected true >> xpos -545 >> ypos -34 >> } >> ProcGeo { >> x_offset 4.2 >> y_size 4.55 >> Lacunarity 1.24 >> Gain 1 >> Speed 0.05 >> name ProcGeo2 >> selected true >> xpos -545 >> ypos 7 >> } >> >> >> On 26 September 2012 01:49, Ari Rubenstein <[email protected]> wrote: >> >>> it seems that the ParticleTurbulence is changing its "seed" every time I >>> make even the most incremental change to the strength or scale setting. >>> I would expect the strength and scale controls, at levels all under 1.0 >>> (with 0 velocity in the emitter), to simply alter the 3 dimensional noise >>> field in a subtle way. >>> And yet, even the smallest change to either strength or scale completely >>> alters the particle's vector ? >>> >>> If this is indeed the way the turbulence force works, does anyone have a >>> technique they'd share for designing particle motion ? >>> I used to work at Xaos Inc., and their system had multiple forces which >>> could be effectively layered and visualized for predictable, and subtle, >>> iterative motion tweaks. >>> I know we're just getting rolling here with particles, but a method for >>> predictable visualization of particle motion is needed for >>> design/performance work. >>> >>> thx, >>> >>> -- >>> Ari Rubenstein >>> Lead Compositor >>> www.blueskystudios.com >>> >>> >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >> >> >
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