Arthur

We're currently working on a project in jitter, where particles move through a space, attracted by a variable number of points which themselves move slowly through space. This all works fine.

However, we would like to pull data out of this patch for analysis and sonification, for example the distance from each particle to each point.

This many-to-many comparison poses some problems in jitter, as jitter objects (including gen) all work with one-to-one (cell-to-cell) comparisons.

We do have some sort of solution (see the attached patch): using an uzi as a for-loop for each frame, looping through each point and comparing the point to all cells in the particle matrix. This is far from optimal, juist a dirty workaround. We're certain there is a better solution, but we have not been able to find it yet.

Have any of you dealt with a problem like this before and if so, how did you solve it?

However, we would like to pull data out of this patch for analysis and sonification, for example the distance from each particle to each point.
This many-to-many comparison poses some problems in jitter, as jitter objects (including gen) all work with one-to-one (cell-to-cell) comparisons.

jitter-matrix-many-to-many-comparison

test if your solution works for you; if so ... use it

Do you have a fix number of points to compare too?

if so, you could do a lookup on the points

in1: a dummy matrix driving the output of gen. planes = number of points distances. dim = particules dim

in3: a matrix of your points. 3 planes . dim = nb of points

inside the gen, make a loop that fills the planes with your distances

loop iteration = cell coord of your points matrix

Do you have a fix number of points to compare too?
if so, you could do a lookup on the points
make a gen with 3 inputs:
in1: a dummy matrix driving the output of gen. planes = number of points distances. dim = particules dim
in2: your particule pos matrix
in3: a matrix of your points. 3 planes . dim = nb of points

inside the gen, make a loop that fills the planes with your distances
loop iteration = cell coord of your points matrix

Jitter matrix many-to-many comparison