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Let's assume you want to filter the particles from “Fluid_A” against their velocities:. If a particle' speed is lower than 2.0 the particle should be transferred to “Fluid_B”:
Target > Fluid_A
Source > Fluid_B
Condition > Expression
Under “Expression” enter: particle.speed < 2.0
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Age | particle.age, particle.isolation
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Collision | particle.collision
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Density | particle.density
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Force | particle.force.mod, particle.force.x, particle.force.y, particle.force.z, particle.f.mod, particle.f.x, particle.f.y, particle.f.z
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ID | particle.id
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Mass | particle.mass
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Neighbors | particle.nv, particle.neighbors, particle.neighbours
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Normal | particle.normal.x, particle.normal.y, particle.normal.z
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Position | particle.pos.x, particle.pos.y, particle.pos.z, particle.position.x, particle.position.y, particle.position.z
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Pressure | particle.pressure
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Texture | particle.texture.u, particle.texture.v, particle.texture.w
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Velocity | particle.speed, particle.velocity.x, particle.velocity.y, particle.velocity.z, particle.vel.x, particle.vel.y, particle.vel.z
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Viscosity | particle.viscosity
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Vorticity | particle.vorticity.mod, particle.vorticity.x, particle.vorticity.y, particle.vorticity.z
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Emitter Id | particle.emitterid* |
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* An emitter's Id can be seen in the HUD.