/// <summary>
/// Constructor of a flow graph
/// </summary>
/// <param name="persons">List of persons</param>
/// <param name="slots">List of scheduleslots</param>
/// <param name="start">Date of the first day of the week to generate</param>
public FlowGraph(List <Person> persons, List <ScheduleSlot> slots, DateTime start)
{
this.Source = new FlowNode("Source");
this.Target = new FlowNode("Target");
this.Nodes = new List <FlowNode>();
this.Arcs = new List <FlowArc>();
this.WeekStart = start;
// creating person's nodes
foreach (Person person in persons)
{
PersonFlowNode node = new PersonFlowNode(person);
this.Nodes.Add(node);
// link node to source
this.Arcs.Add(new FlowArc(this.Source, node, Math.Round(person.occupancyRate * 40 / 100)));
}
// creating slots' nodes
foreach (ScheduleSlot slot in slots)
{
SlotFlowNode node = new SlotFlowNode(slot);
double delta = slot.endHour.Subtract(slot.startHour).TotalHours;
this.Nodes.Add(node);
// linking node to person's nodes
foreach (FlowNode nody in this.Nodes)
{
if (nody.Type == FlowNodeType.Person)
{
this.Arcs.Add(new FlowArc(nody, node, delta));
}
}
// linking node to target
this.Arcs.Add(new FlowArc(node, this.Target, delta * slot.minAttendency));
}
}
public FlowGraph(List <Person> persons, List <ScheduleSlot> slots, DateTime start, List <AbsenceDemand> absences)
{
this.Source = new FlowNode("Source");
this.Target = new FlowNode("Target");
this.Nodes = new List <FlowNode>();
this.Arcs = new List <FlowArc>();
this.WeekStart = start;
// creating person's nodes
foreach (Person person in persons)
{
PersonFlowNode node = new PersonFlowNode(person);
this.Nodes.Add(node);
// link node to source
this.Arcs.Add(new FlowArc(this.Source, node, Math.Round(person.occupancyRate * 40 / 100)));
}
// creating slots' nodes
foreach (ScheduleSlot slot in this.SplitSlots(new List <ScheduleSlot>(slots), absences))
{
SlotFlowNode node = new SlotFlowNode(slot);
double delta = slot.endHour.Subtract(slot.startHour).TotalHours;
this.Nodes.Add(node);
// linking node to person's nodes
foreach (FlowNode nody in this.Nodes)
{
if (nody.Type == FlowNodeType.Person)
{
bool present = true;
// check absences
for (int i = 0; i < absences.Count && present; i++)
{
AbsenceDemand absence = absences[i];
// if the absent is the concerned node then
if (absence.Person == ((PersonFlowNode)nody).Person)
{
// gettting the 'real' day of the slot
DateTime theDay = WeekStart.AddDays(((int)slot.dayOfWeek - (int)WeekStart.DayOfWeek) % 7);
DateTime theStart = theDay.Add(slot.startHour);
DateTime theEnd = theDay.Add(slot.endHour);
// check for overlap
if (theStart >= absence.start && theEnd <= absence.end)
{
present = false;
}
}
}
// only if no overlap has been found is the node linked
if (present)
{
this.Arcs.Add(new FlowArc(nody, node, delta));
}
}
}
// linking node to target
this.Arcs.Add(new FlowArc(node, this.Target, delta * slot.minAttendency));
}
}
