The Move Pivots operator can be used to modify particle pivot points. This is analogous to modifying the pivot of a scene object, if we think of the particle’s transform as a pivot and the particle’s shape as an object.
Shape center: moves the particle to the center of its shape mesh.
Closest point to object (in world): moves the particles to the closest point in world-space to a specified object.
Closest point to object (on shape): moves the particle to the closest point on its shape to a specified object.
Furthest point from object (on shape): moves the particle to the furthest point on its shape to a specified object.
On shape bounds (local): moves the particle to a specified location on its local bounding box.
On shape bounds (world): moves the particle to a specified location on its axis-aligned bounding box.
Offset by value (local): moves the particle in the local space of its transform.
Offset by value (world): moves the particle in world space.
Custom Vector: moves the particle to the location defined by a custom vector.
Closest point to vector (shape): moves the particles to the closest point to a custom vector on its shape.
Furthest point from vector (shape): moves the particles to the furthest point from a custom vector on its shape.
Absolute position (world): moves the particle to an absolute position in world space.
Surface: proximity tests will search for the closest point on the input object(s) surface.
Pivot: proximity tests will search for the closest input object(s) pivot.
Particle position: the closest point to an input object is found by finding the smallest distance between the particle’s position and an input object (this is the fastest mode).
Particle vertices: the closest point to an input object is found by finding the smallest distance between the particle shape’s vertices and an input object (this mode offers a trade-off between speed and precision - it’s moderately precise and still relatively fast).
Particle surface: the closest point to an input object is found by finding the smallest distance between the particle shape’s surface and an input object (this mode is the slowest and most accurate mode).
Vertices: the vertices of the particle’s shape mesh will be used to do the closest/furthest calculations.
Edge Centers: the edge centers of the particle’s shape mesh will be used to do the closest/furthest calculations.
Face Centers: the face centers of the particle’s shape mesh will be used to do the closest/furthest calculations.
Value: the amount to interpolate particle pivot positions from their previous value to the new value.