How to use

EnvironmentNode

in

it.unibo.alchemist.model.interfaces

private void changeConcentrationInSortedNodes(final List<EnvironmentNode> envNodesSurrounding) {
  if (delta < 0) {
    double deltaTemp = delta;
    for (final EnvironmentNode n : envNodesSurrounding) {
      final double nodeConcentration = n.getConcentration(biomolecule);
      // if nodeConcentration >= |deltaTemp|, remove the a delta quantity of the biomol only from this node
      if (nodeConcentration >= FastMath.abs(deltaTemp)) {
        n.setConcentration(biomolecule, nodeConcentration + deltaTemp);
        break;
        // else, remove all molecule of that species from that node and go on till deltaTemp is smaller than nodeConcetration
      } else {
        deltaTemp = deltaTemp + nodeConcentration;
        n.removeConcentration(biomolecule);
      }
    }
  } else {
    // if delta > 0, simply add delta to the first node of the list (which has been sorted randomly)
    final Node<Double> target = envNodesSurrounding.get(0);
    target.setConcentration(biomolecule, target.getConcentration(biomolecule) + delta);
  }
}

.mapToDouble(n -> n.getConcentration(biomolecule))
.distinct()
.count() == 1;
      n1.getConcentration(biomolecule), 
      n2.getConcentration(biomolecule)

  private void changeConcentrationInRandomNodes(final List<EnvironmentNode> envNodesSurrounding) {
    if (delta < 0) {
      double deltaTemp = delta;
      while (deltaTemp < 0) {
        final int index = getRandomGenerator().nextInt(envNodesSurrounding.size());
        final EnvironmentNode pickedNode = envNodesSurrounding.get(index);
        final double nodeConcentration = pickedNode.getConcentration(biomolecule);
        // if nodeConcentration >= |deltaTemp|, remove the a delta quantity of the biomol only from this node
        if (nodeConcentration >= FastMath.abs(deltaTemp)) {
          pickedNode.setConcentration(biomolecule, nodeConcentration + deltaTemp);
          break;
          // else, remove all molecule of that species from that node and go on till deltaTemp is smaller than nodeConcetration
        } else {
          deltaTemp = deltaTemp + nodeConcentration;
          pickedNode.removeConcentration(biomolecule);
        }
        envNodesSurrounding.remove(index);
      }
    } else {
      // if delta > 0, simply add delta to the first node of the list (which has been sorted randomly)
      final Node<Double> target = envNodesSurrounding.get(getRandomGenerator().nextInt(envNodesSurrounding.size()));
      target.setConcentration(biomolecule, target.getConcentration(biomolecule) + delta);
    }
  }
}