flowField:Defining a vector from a table

Processing Coding Questions
1

Hi!

I found a Perlin Noise code on Github which I would like to tweak for an art project at school.

I would like to add an new Pvector forcefield which is based on a some x,y coordinates I have in a .csv file. I would like to keep the original flowfield, and add a new flowfield in the code.

The main challenge (as far as I can see) is to convert the x,y coordinates into vectors with the right direction.

Any help would be appreciated!

Hers the original code which I found from a youtube-video from The Coding Train.

int scl, cols, rows;
float inc, zinc, zoff;
Particle[] particles;
PVector[] flowField;
StopWatch sw;

void setup() {
//Display params
colorMode(HSB);
background(255);
size(1920,1080,P2D);
frameRate(30);

//Variables
scl = 40;
inc = 0.1;
zinc = 0.0001;
zoff = 0;

//Field grid
cols = int(width/scl);
rows = int(height/scl);

//flowfield and particles
particles = new Particle[5000];
flowField = new PVector[cols*rows];
CreateParticles();

//Timekeeper
sw = new StopWatch();
sw.Start();
}

void Reset() {
background(255);
for (Particle p : particles) {
p.Reset();
}
sw.Restart();
}

void draw() {
if (sw.GetSeconds() >= 90) {
Reset();
}

float yoff = 0;
for (int y = 0; y<rows; y++) {
float xoff=0;
for (int x = 0; x<cols; x++) {
int index = x+y*cols;
float angle = noise(xoff, yoff, zoff)TWO_PI4;
PVector v = PVector.fromAngle(angle).setMag(1);
flowField[index] = v;
xoff+= inc;
}
yoff +=inc;
zoff +=zinc;
}

FlowFieldParticles(flowField);
}

void CreateParticles() {
for (int i=0; i<particles.length; i++) {
particles[i] = new Particle();
}
}

void FlowFieldParticles(PVector[] flowField) {
for (Particle p : particles) {
p.FollowFlow(flowField);
p.Update();
p.EdgeCheck();
p.Show();
}
}