lymanzhang_MachineLearning4GenerativeDesign/Classification/K-Means/bit2atom_k_means_v0.5/randomkpoint.pde
void randomkpoint() {
  spk = new clusterPoint[k];
  for (int i = 0; i < spk.length; i ++) {
    spk[i] = new clusterPoint(new PVector(random(50, width-50), random(50, height-50)), i, 0, 1);
  }
}
