String [] terrainBuild(Vec3 [] vectors, int objectNum, int wide, int high){
  String [] terrain = new String[vectors.length];
  for(int i = 0; i < terrain.length; i++){
    terrain[i] = "v "+nf(vectors[i].x*100,1,1)+" "+nf(vectors[i].y*100,1,1)+" "+nf(vectors[i].z*100,1,1);
  }
  String [] faces = new String[(wide-1)*(high-1)];
  int baseLength = wide-1;
  int sourceLength = wide;
  for(int i = 0; i < faces.length; i++){
    int [] facenum = new int[4];
    int sourceStart = (i % (wide - 1)) + ((i / (wide - 1)) * wide);
    int sourceEnd = sourceStart + (wide * 2);
    int add = objectNum * (wide - 1) * (high - 1);
    int n = 0;
    for (int j = sourceStart; j < sourceEnd; j += wide){
      for (int k = 0; k < 2; k++){
        //numbering starts at 1
        facenum[n++] = (j+k+add+1);
      }
    }
    faces[i] = "f "+facenum[0]+" "+facenum[1]+" "+facenum[3]+" "+facenum[2];
  }
  String newline = "";
  String name = "g Plane"+nf(objectNum+1,2);
  String [] returnable = {
    ""    };
  returnable = concat(returnable, terrain);
  returnable = append(returnable, newline);
  returnable = append(returnable, name);
  returnable = concat(returnable, faces);
  returnable = append(returnable, newline);
  returnable = append(returnable, "g");
  return returnable;
}
void saveObjects(String fileName){
  String [] file = terrainBuild(net.netImage(), 0, net.W, net.H);
  saveStrings(fileName,file);
  println("file:"+fileName+" saved");
}