The "Attractor" is also one of most commonly used daemons and perfectly suited to sculpt and shape fluids, enhance splashes, or create the famous “liquid dance” simulations, where particles are attracted and repulsed to create a dynamic and balanced movement. This daemon attracts particles towards its centre – negative values create a repulsion. Near the centre attraction forces become stronger and particles – or objects – experience greater acceleration. But not only fluids are affected by attractors, because this type can also act on rigid and soft bodies. Bodies with higher masses require higher “Internal force” settings. Another feature is that the "Attractor" daemon can adopt different shapes and its influence can be restricted with a bounding option. Animated "Attractors" are useable for many creative fluid sculpting approaches.
Affect
Particles can be affected in two ways: either by “Force” or “Velocity”. The first option applies an external force, resulting in an acceleration, while the second one only modifies the velocities of the particles without introducing an additional acceleration.
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If “Attenuated” is set to “Yes”, this option becomes editable. It is the radius where the attraction/repulsion force begins to attenuate. The parameter's unit is metres [m].
External force
Again an option which is only accessible with “Attenuated” set to “Yes”. It is the attractor’s strength in the outer area, defined by “External radius”.
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The third value that is dependent on “Attenuated”. The setting determines the radius where the attenuation of the attraction/repulsion force ends. This radius is represented by a dark blue ring around the attractor and measured in metres [m].
Attenuated
You have the choice between “Yes” and “No”. “Yes” unlocks the previous three fields to specify the details for the force’s attenuation. “Yes” also tells the daemon that its attraction force declines with growing distance from the centre.
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Planet radius
Control the radius of , given in metres [m], of the virtual planet here. This option is only available with “Attractor” type set to “Planetary”. The daemon’s viewport symbol will be updated automatically to indicate the new radius.
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