Loop & bg problem

Processing Coding Questions
11

Alright, why don’t you try using an array of PVectors instead of vertices? Both vertex() and PVector() hold two values, one for x, one for y. Try creating a PVector[] vertices = new PVector[0]; (before the setup(){} )then use

 int n_vertex = int(random(7, 20));
vertices = new PVector[n_vertex];
    beginShape();
    for (int i = 0; i < n_vertex; i++) {
    vertices[i] = new PVector(random(width), random(height));
    }

instead of

int n_vertex = int(random(7, 20));

    beginShape();
    for (int i = 0; i < n_vertex; i++) {
    vertex(random(width), random(height));
    }
    
    endShape(CLOSE);

and for the other condition (high> bass) as well.
Then, right before the end of the draw loop, use

if(vertices.length > 0){
  beginShape();
  for(int i = 0; i< vertices.length; i++){
   vertex(vertices[i].x, vertices[i].y); 
  }
  endShape(CLOSE);
}

This should work, because every time a new shape is created, its vertices are stored in an array, in the form of PVectors. This way, you can draw it anytime. Hope this helps.