Proximity particle node

Turns this node on and off. The operator is only active if this value is greater than 0. This is useful to control the effect of this node with an expression.

Only affect a group of points (created with, for example, a Group POP or Collision POP) out of all the points in the input.

Sets the nearest attribute on each input particle to the ID of the nearest particle.

Sets the nearestdist attribute on each input particle to the distance to the nearest particle.

Sets the numproximity attribute on each input particle to the number of particles within the distance defined by the Proximity Radius parameter below.

When this option is on, the operator creates new particle groups corresponding to each input particle, containing the particles closer than the Proximity Radius to that particle.

Only use a subset of the input particles (created with, for example, a Group POP or Collision POP) when filling the new groups of nearby particles.

The base name of the new groups created by this particle. The operators names the groups by appending the ID (or point number, if Use point numbers instead of IDs is on below) of the source particle to this base name.

Include the source particle in the proximity group.

Distance within which other particles are grouped.

Use the point number instead of IDs to indicate particles. IDs are unique to each individual particle, while point numbers refer to a position in the list of particles. In a particle system where particles are dying and points are being reused, this could mean the “nearest” particle could change as particles die (even if they're not within the Proximity Radius.

The seconds a particle in the template has been alive.

Acceleration of the particle.

The point’s relative position in the bounding box.

Point is dead.

Processing iteration number.

A collision for this particle was detected (for example, by the Collision POP) during the processing of this timestep (that is, this iteration of the particle simulation). This variable is cleared at the beginning of each timestep. Note that the collision POP actually detects any collisions which would have occurred the during the previous frame.

Percent of total life used (from 0 to 1).

Expected lifetime of particle.

Point or vertex texture coordinates.

Total number of points.

Total number of points in source group.

Normal vector.

The point number of the currently processed point. The PT is not constant like ID; it changes based on the number of points.

The rest position.

The sliding state of the particle.

Elasticity of a point.

Point is stopped.

1 if particle is stuck to a collision object.

Spring tension.

Time increment.

Point position.

Surface UV values.

Velocity direction.

Point spline weight.

Distance from particle to last collision.

Diffuse color at the collision point on the surface the particle collided with.

ID for last collision. You can control how this attribute is set in the Collision or Limit POP to help distinguish types of collisions.

The time at which the last collision occurred.

The texture map UV coordinates for the surface location where the last collision occurred.

The normal at the surface location where the last collision occurred.

World space position of the last collision.

The UV coordinates for the surface location where the last collision occurred.

Number of times the particle has collided.

Point or vertex alpha value.

Diffuse point or vertex color.

Attractor point.

Charge of the particle.

Point is clinging to geometry.

Point drag.

Leader to follow.

Point mass.

Particle Scale.

Non-uniform scale.

Either the point number or id of the particle nearest to this one.

The distance to the nearest particle.

The number of particles within a specified proximity to this particle.

Rotation angle.

Rotation axis.

Generation.

ID number, which always remains constant.

Original Source point was birthed from.

Parent’s ID Number.

Maximum speed.

Minimum speed.

Sprite rotation around view axis (in degrees).

Texture coordinate of sprite’s lower-left corner.

Size of sprite in texture space.

Sprite scale.

Suppress default position rule.

Suppress default velocity rule.

Suppress default up-vector rule.

Suppress default aging rule.

1 if particle is suppressing its default rotation rule.

1 if particle is suppressing its default angular velocity rule.

Previous velocity.

Up vector.

Absolute speed of particle.