How to store random coordinates?

Processing Beginners
2

Look at ArrayList and set one up to type PVector
(before setup())

Then in a for loop make PVectors and add them to the arraylist
(All in setup())

In draw() read and show arraylist

See reference ArrayList

Example



import peasy.*;
PeasyCam cam;

ArrayList<PVector> list = new ArrayList();  

void setup() {
  size(1300, 1300, P3D);
  cam = new PeasyCam(this, 200);

  // randomSeed(0);

  for (int i=0; i<5; i++) {
    float posx=random(0, 150);
    float posy=random(0, 150);
    float posz=random(-450, 0);
    list.add(new PVector(posx, posy, posz));
  }
}

void draw() {
  background(0);
  lights();

  noStroke(); 
  fill(255, 0, 0); 

  for (PVector pv : list) {
    pushMatrix();
    translate(pv.x, pv.y, pv.z);
    sphere(14); 
    popMatrix();
  }
}
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