This compound tests for particles being inside the icon of a null. When the particles are inside the null, they trigger the
effect.
Plug its Result output into a Trigger port on a State compound or in a Condition port of an If node.
For more information on states, see ICE Particle States [ICE Particle Simulations].
Tasks: Particles/Conditionals
Output Ports: Result
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The null within which the particles must be to trigger the effect. The null's icon must be a 3D geometry shape for this to
work: change the Primary Display Icon of the null in its property editor. Plug the null's Output Name output into this port.
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Toggles the use of the Falloff Profile Curve below. If you turn this off, the particles are simply tested as to whether they
are inside the null shape or not: there is no falloff.
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This graph determines the falloff of the particles inside the null to create a more gradual effect.
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