//! Calculate number of Conflicts in the schedule
/*!
* \param ContactWindowVector schedule to calculate fairness
* \return int number of overall conflicting contact windows
*/
public static int getNrOfConflicts(ContactWindowsVector contacts)
{
int nrOfConflicts = 0;
HashSet <Guid> hashConflict = new HashSet <Guid>();
for (int i = 0; i < contacts.Count(); i++)
{
for (int k = 0; k < contacts.Count(); k++)
{
if (i != k && contacts.getAt(i).getSheduledInfo() &&
contacts.getAt(k).getSheduledInfo() &&
contacts.getAt(i).checkConflikt(contacts.getAt(k)))
{
if (contacts.getAt(k).getSatName() == contacts.getAt(i).getSatName() ||
contacts.getAt(k).getStationName() == contacts.getAt(i).getStationName())
{
if (!hashConflict.Contains(contacts.getAt(k).getID()))
{
nrOfConflicts++;
hashConflict.Add(contacts.getAt(i).getID());
}
}
}
}
}
hashConflict.Clear();
return(nrOfConflicts);
}
//! Fill Gaps in finisched Schedule
/*!
* this funcions will run through the final solution and
* adds contact windows to the schedule were there is still
* space and time. Thus filling in empty spaces were contacts
* can be made
*/
private void fillGaps()
{
for (int i = 0; i < result.Count(); i++)
{
if (!result.getAt(i).getSheduledInfo())
{
bool found = false;
for (int k = 0; k < result.Count(); k++)
{
if (set.getAt(i).checkConflikt(set.getAt(k)) &&
result.getAt(k).getSheduledInfo() &&
i != k)
{
if (set.getAt(i).getSatName() == set.getAt(k).getSatName() ||
set.getAt(i).getStationName() == set.getAt(k).getStationName())
{
found = true;
break;
}
}
}
if (!found)
{
result.getAt(i).setSheduled();
}
}
}
}
//! Solve Conflicts by Priority
/*!
* this function will go throuh all conflicting elements that have
* ben scheduled by the scheduler and will remove conflicting elements
* with lower priority (None - Critical -> 4 - 0)
*/
public void solveConflictsByPriority()
{
if (schedule != null)
{
for (int i = 0; i < schedule.Count(); i++)
{
for (int k = 0; k < schedule.Count(); k++)
{
int maxPriority = (int)schedule.getAt(i).getPriority();
if (schedule.getAt(i).getSheduledInfo() && k != i &&
schedule.getAt(k).getSheduledInfo() &&
schedule.getAt(k).getStationName() == schedule.getAt(i).getStationName() &&
schedule.getAt(i).checkConflikt(schedule.getAt(k)))
{
if ((int)schedule.getAt(k).getPriority() < maxPriority)
{
schedule.getAt(i).unShedule();
break;
}
else
{
schedule.getAt(k).unShedule();
break;
}
}
}
}
}
}
private int calcualteMaxPrioValue(ContactWindowsVector contacts, int[] population = null)
{
int[] priorityCounts = new int[5] {
0, 0, 0, 0, 0,
};
int res = 0;
for (int i = 0; i < contacts.Count(); i++)
{
int p = 0;
if (population != null)
{
if (population[i] == 1)
{
p = (int)contacts.getAt(i).getPriority();
}
}
else
{
p = (int)contacts.getAt(i).getPriority();
}
priorityCounts[p]++;
}
for (int i = 0; i < priorityCounts.Count(); i++)
{
res += priorityCounts[i] * (5 - i);
}
return(res);
}
public static double getDurationOfScheduledContacts(ContactWindowsVector contacts)
{
double duration = 0.0;
for (int i = 0; i < contacts.Count(); i++)
{
if (contacts.getAt(i).getSheduledInfo())
{
duration += contacts.getAt(i).getDuration();
}
}
return(duration);
}
//! Set the finall schedule
/*!
* \param int[] current populus
* \param ContactWindowsVector starting contactwindows
* Each contact windows will be scheduled or unscheduled defined by the found solution
*/
private void setSchedule(int[] pop, ContactWindowsVector contacts)
{
for (int i = 0; i < nrOfContacts; i++)
{
if (pop[i] == 1)
{
contacts.getAt(i).setSheduled();
}
else
{
contacts.getAt(i).unShedule();
}
}
}
//Test Function
public static string getNrOfUweContacts(ContactWindowsVector contacts)
{
int count = 0;
for (int i = 0; i < contacts.Count(); i++)
{
if (contacts.getAt(i).getSheduledInfo() &&
contacts.getAt(i).getSatName() == "UWE-3")
{
count++;
}
}
return("UWE-3: " + count);
}
private void fillContacts(ContactWindowsVector contacts)
{
for (int i = 0; i < contacts.Count(); i++)
{
bool confilcts = false;
if (!contacts.getAt(i).getSheduledInfo())
{
for (int j = 0; j < contacts.Count(); j++)
{
if (contacts.getAt(j).getSheduledInfo() && i != j && contacts.getAt(i).checkConflikt(contacts.getAt(j)))
{
if (contacts.getAt(i).getStationName() == contacts.getAt(j).getStationName() ||
contacts.getAt(i).getSatName() == contacts.getAt(j).getSatName())
{
confilcts = true;
break;
}
}
}
}
if (!confilcts)
{
contacts.getAt(i).setSheduled();
}
}
}
//! Calculates a schedule from the defined problem
/*!
* \pram ScheduleProblemInterface defined problem with contactwindows
* This Function will calculate the solution to the problem defined in
* Schedule Problem Interface
*/
public void CalculateSchedule(ScheduleProblemInterface problem)
{
set = problem.getContactWindows();
schedule = new ContactWindowsVector();
set.sort(Structs.sortByField.TIME);
while (!isComplete())
{
for (int i = 0; i < set.Count(); i++)
{
bool collisionFound = false;
List <int> collisionSet = new List <int>();
collisionSet.Add(i);
for (int j = 1; j < set.Count() - 1; j++)
{
collisionFound = checkCollision(set.getAt(i), set.getAt(j));
collisionSet.Add(j);
}
if (collisionFound)
{
set.getAt(i).setSheduled();
for (int k = 0; k < collisionSet.Count - 1; k++)
{
set.getAt(collisionSet[k]).unShedule();
}
}
else
{
schedule.add(set.getAt(i));
set.deleteAt(i);
i--;
}
}
}
//retrive all the contactwindows that need to be scheduled
//ContactWindowsVector set = problem.getContactWindows();
//Scheduler Magic until is Complete returns true
//No Element of the ContactWindowsVector set should be deleted
//To Schedule a item call set.getAt(index).setSheduled()
//To Unschedule a item call set.getAt(index).unShedule()
}
//! Calculates a schedule from the defined problem
/*!
* \pram ScheduleProblemInterface defined problem with contactwindows
* Greedy approach earliest job first.
*/
public void CalculateSchedule(ScheduleProblemInterface problem)
{
set = problem.getContactWindows();
ContactWindowsVector set1 = new ContactWindowsVector();
ContactWindowsVector set2 = new ContactWindowsVector();
List <string> staName = set.getStationNames();
//while set is not empty do
while (!isComplete())
{
//loop through all Stations
for (int i = 0; i < staName.Count(); i++)
{
int pos = -1;
double earliest = 9999.99;
int priority = 4;
//loop through all Contacts and find the item that finisches
//first and has the highest priority.
for (int k = 0; k < set.Count(); k++)
{
if (set.getAt(k).getStationName() == staName[i])
{
if (set.getAt(k).getStopTime().getEpoch() < earliest
&&
(int)set.getAt(k).getPriority() <= priority)
{
pos = k;
earliest = set.getAt(k).getStopTime().getEpoch();
priority = (int)set.getAt(k).getPriority();
}
}
}
//update Progress Bar on Main Form
if (Properties.Settings.Default.global_MaxPerf == false)
{
System.Windows.Forms.Application.DoEvents();
}
if (f != null)
{
f.incrementProgressBar();
}
//the found earliest job is added to set1 if its empty
//or no other contact in set1 is conflicting with it
//if there is a conflict add this element to set2
//Then the element is deleted from set1
if (pos > -1)
{
if (set1.isEmpty())
{
set1.add(set.getAt(pos));
set.deleteAt(pos);
}
else
{
bool found = false;
for (int k = 0; k < set1.Count(); k++)
{
if (set.getAt(pos).checkConflikt(set1.getAt(k)))
{
if (set.getAt(pos).getSatName() == set1.getAt(k).getSatName())
{
set2.add(set.getAt(pos));
set.deleteAt(pos);
found = true;
break;
}
}
}
if (!found)
{
set1.add(set.getAt(pos));
set.deleteAt(pos);
}
}
}
}
}
for (int i = 0; i < set1.Count(); i++)
{
set1.getAt(i).setSheduled();
}
for (int i = 0; i < set2.Count(); i++)
{
set2.getAt(i).unShedule();
}
set.add(set1);
set.add(set2);
schedule = set;
solveConflictsByPriority();
if (f != null)
{
f.resetProgressBar();
}
}
//! Solve Conflict and all collisions by random
/*!
* this funcions checks all contacts that are included in the
* current population and removes conflicting ones, either by
* priority or by random chance
*/
private void surviveConflicts(int[] pop, Random ran, bool piroity = false)
{
for (int i = 0; i < nrOfContacts; i++)
{
if (pop[i] == 1)
{
List <int> conflicting = new List <int>();
conflicting.Add(i);
int startItem = i - (nrOfSatellites * nrOfStation) / 2;
if (startItem < 0)
{
startItem = 0;
}
int stopItem = i + (nrOfSatellites * nrOfStation) / 2;
if (stopItem > nrOfContacts)
{
stopItem = nrOfContacts;
}
for (int k = startItem; k < stopItem; k++)
{
if (pop[k] == 1 && k != i &&
set.getAt(i).checkConflikt(set.getAt(k)))
{
if (set.getAt(i).getSatName() == set.getAt(k).getSatName() ||
set.getAt(i).getStationName() == set.getAt(k).getStationName())
{
conflicting.Add(k);
}
}
}
if (conflicting.Count > 1)
{
if (piroity)
{
int maxPrio = 4;
int posMax = 0;
for (int l = 0; l < conflicting.Count; l++)
{
if ((int)set.getAt(conflicting[l]).getPriority() <= maxPrio)
{
maxPrio = (int)set.getAt(conflicting[l]).getPriority();
posMax = conflicting[l];
pop[conflicting[l]] = 0;
}
}
pop[posMax] = 1;
}
else
{
for (int l = 0; l < conflicting.Count; l++)
{
pop[conflicting[l]] = 0;
}
pop[conflicting[ran.Next(0, conflicting.Count - 1)]] = 1;
}
}
}
}
}
//! returns the number of contacts for each priority
/*!
* \param ContactWindowVector schedule to calculate fairness
* \return string containing number of contacts schedule for each priorty
*/
public static string getNrOfPrioritysScheduled(ContactWindowsVector contacts)
{
int p0 = 0;
int p1 = 0;
int p2 = 0;
int p3 = 0;
int p4 = 0;
int sp0 = 0;
int sp1 = 0;
int sp2 = 0;
int sp3 = 0;
int sp4 = 0;
for (int i = 0; i < contacts.Count(); i++)
{
int p = (int)contacts.getAt(i).getPriority();
switch (p)
{
case 0:
p0++;
break;
case 1:
p1++;
break;
case 2:
p2++;
break;
case 3:
p3++;
break;
case 4:
p4++;
break;
}
if (contacts.getAt(i).getSheduledInfo())
{
switch (p)
{
case 0:
sp0++;
break;
case 1:
sp1++;
break;
case 2:
sp2++;
break;
case 3:
sp3++;
break;
case 4:
sp4++;
break;
}
}
}
return(sp0 + "/" + p0 + " - " + sp1 + "/" + p1 + " - " + sp2 + "/" + p2 + " - " + sp3 + "/" + p3 + " - " + sp4 + "/" + p4);
}
//! Calculate scheduling solution from certain startpoint
/*!
* calculate a schedule from a certain starting point
* if iterating trhough every contact window can be used to brute force
* the scheduling solution
* \param ScheduleProblemInterface to solve scheduling problem
* \param int point from which to start from
*/
public void BruteForceSchedule(ScheduleProblemInterface problem, int step)
{
objective = problem.getObjectiveFunction();
set = problem.getContactWindows();
int nrOfAllContacts = set.Count();
ContactWindowsVector set1 = new ContactWindowsVector();
ContactWindowsVector set2 = new ContactWindowsVector();
//double maxFitness = 0.0;
int count = 0;
set1.add(set.getAt(step));
set.deleteAt(step);
while (!isComplete())
{
int pos = -1;
double maxFitness = 0.0;
for (int i = 0; i < set.Count(); i++)
{
objective.calculateValues(set1, set, nrOfAllContacts, set.getAt(i));
double fitness = objective.getObjectiveResults();
if (fitness > maxFitness)
{
maxFitness = fitness;
pos = i;
}
if (Properties.Settings.Default.global_MaxPerf == false)
{
System.Windows.Forms.Application.DoEvents();
}
}
bool found = false;
if (pos >= 0)
{
for (int i = 0; i < set1.Count(); i++)
{
if (set.getAt(pos).checkConflikt(set1.getAt(i)))
{
if (set.getAt(pos).getSatName() == set1.getAt(i).getSatName() ||
set.getAt(pos).getStationName() == set1.getAt(i).getStationName())
{
set2.add(set.getAt(pos));
set2.getLast().unShedule();
set.deleteAt(pos);
found = true;
break;
}
}
if (Properties.Settings.Default.global_MaxPerf == false)
{
System.Windows.Forms.Application.DoEvents();
}
}
if (!found)
{
set1.add(set.getAt(pos));
set1.getLast().setSheduled();
set.deleteAt(pos);
}
}
else
{
count++;
}
}
set.add(set1);
set.add(set2);
schedule = set;
}
//! Remove unwanted contact windows
/*!
* \param int Min. Duration window
* Deletes all contact windows whitch contact times are lower then min duration
*/
public void removeUnwantedContacts(int minDuration)
{
for (int i = 0; i < schedulerContacts.Count(); i++)
{
if (schedulerContacts.getAt(i).getDuration() < minDuration)
{
schedulerContacts.deleteAt(i);
i--;
}
}
}
//! Calculates a schedule from the defined problem
/*!
* \pram ScheduleProblemInterface defined problem with contactwindows
* This Function will calculate the solution to the problem defined in
* Schedule Problem Interface
*/
public void CalculateSchedule(ScheduleProblemInterface problem)
{
objective = problem.getObjectiveFunction();
result = problem.getContactWindows();
if (adaptiveMaxIterations)
{
maxNumberOfIteration = result.Count() * 4;
}
if (randomStart)
{
result.randomize();
fillContacts(result);
}
if (mainform != null)
{
mainform.setProgressBar(maxNumberOfIteration);
}
currentFitness = 0.0;
result.getAt(0).setSheduled();
while (!isComplete())
{
for (int i = 0; i < result.Count(); i++)
{
iterations++;
for (int j = 0; j < result.Count(); j++)
{
if (i != j && result.getAt(i).checkConflikt(result.getAt(j)))
{
if (result.getAt(i).getStationName() == result.getAt(j).getStationName() ||
result.getAt(i).getSatName() == result.getAt(j).getSatName())
{
//collision detected
result.getAt(i).unShedule();
result.getAt(j).setSheduled();
double newFitness = getFitness(result);
if (newFitness < currentFitness)
{
result.getAt(j).unShedule();
result.getAt(i).setSheduled();
}
else
{
currentFitness = newFitness;
break;
}
}
}
}
}
if (Properties.Settings.Default.global_MaxPerf == false)
{
System.Windows.Forms.Application.DoEvents();
}
if (mainform != null)
{
mainform.updateProgressBar(iterations);
}
currentFitness = getFitness(result);
fillContacts(result);
}
}
//! Draw Conatact Windows.
/*!
* \param ContactWindowsVector Contacts
* \param bool Draw All if false only scheduled contacts will be drawn
* \return Image bmp-Image
* Creates a bmp Image and returns it
*/
public static Image drawContacts(ContactWindowsVector contacts, bool drawAll)
{
if (contacts != null)
{
//sort by Groundstations
contacts.sort(Structs.sortByField.GROUNDSTATION);
List <string> satNameList = contacts.getSatelliteNames();
List <string> staNameList = contacts.getStationNames();
int x_offset = 100;
int y_offset = 20;
int satBoxheight = 20;
//calculate Size of Image
double timeLength = contacts.getStopTime().getEpoch() - contacts.getStartTime().getEpoch();
int imWidth = Convert.ToInt32(timeLength = 8640 * timeLength);
int imHeight = satNameList.Count() * staNameList.Count() * 20;
Image dest = new Bitmap(imWidth + x_offset, imHeight + y_offset);
//Generate Front and Brusch for drawing
System.Drawing.Graphics g;
System.Drawing.Pen pen = new System.Drawing.Pen(Color.Black, 1F);
Font drawFont = new Font("Arial", 10);
SolidBrush brush = new SolidBrush(Color.Black);
g = Graphics.FromImage(dest);
g.TextRenderingHint = System.Drawing.Text.TextRenderingHint.SingleBitPerPixelGridFit;
//Start Drawing Contact Windows
for (int i = 0; i < contacts.Count(); i++)
{
//Draw only if scheduled unless drawAll = true
if (contacts.getAt(i).getSheduledInfo() || drawAll)
{
int satPosY = satNameList.IndexOf(contacts.getAt(i).getSatName());
int staPosY = staNameList.IndexOf(contacts.getAt(i).getStationName());
int y = 0;
int x = 0;
int satBoxhWidth = 0;
y = satPosY * 20 + staPosY * satNameList.Count() * 20 + y_offset;
double satx = 8640 * (contacts.getAt(i).getStartTime().getEpoch() - contacts.getStartTime().getEpoch());
x = Convert.ToInt32(satx) + x_offset;
satBoxhWidth = Convert.ToInt32(contacts.getAt(i).getDuration() / 10.0);
//brush = new SolidBrush(Color.FromArgb(contacts.getAt(i).getHash()));
if (drawAll && !contacts.getAt(i).getSheduledInfo())
{
brush = new SolidBrush(Color.FromArgb(215, 215, 215));
g.FillRectangle(brush, new Rectangle(x, y, satBoxhWidth, satBoxheight));
g.DrawString(contacts.getAt(i).getSatName(), drawFont, new SolidBrush(Color.DarkGray), x, y);
}
else
{
brush = new SolidBrush(Color.FromArgb(contacts.getAt(i).getHash()));
g.FillRectangle(brush, new Rectangle(x, y, satBoxhWidth, satBoxheight));
g.DrawString(contacts.getAt(i).getSatName(), drawFont, new SolidBrush(Color.Black), x, y);
}
}
}
System.Drawing.Pen stationPen;
stationPen = new System.Drawing.Pen(Color.DarkGray, 1);
g.DrawLine(stationPen, x_offset, 0, x_offset, imHeight);
//Start Drawing Stations Names
for (int i = 0; i < staNameList.Count(); i++)
{
int x1 = 0;
int y1 = (i + 1) * satNameList.Count() * 20;
int x2 = imWidth;
int y2 = (i + 1) * satNameList.Count() * 20;
g.DrawString(staNameList[i], drawFont, new SolidBrush(Color.Black), 5, y1 - ((satNameList.Count() / 2) * 20));
g.DrawLine(stationPen, x1, y1 + y_offset, x2, y2 + y_offset);
}
One_Sgp4.EpochTime time = new One_Sgp4.EpochTime(contacts.getStartTime());
g.DrawString(contacts.getStartTime().ToString(), drawFont, new SolidBrush(Color.Black), x_offset, 5);
for (int i = x_offset; i < imWidth; i += 180)
{
g.DrawString(time.ToString(), drawFont, new SolidBrush(Color.Black), i, 5);
g.DrawLine(stationPen, i, 0, i, imHeight);
time.addTick(10 * 180);
}
//g.Dispose();
drawFont.Dispose();
brush.Dispose();
pen.Dispose();
dest.Save("Contacts.bmp");
return(dest);
}
else
{
int imWidth = 8640;
int imHeight = 20;
Image dest = new Bitmap(imWidth, imHeight);
return(dest);
}
}
//! calculate the fitness value of ALL defined objetive values
/*!
* \param ContactWindowsVector contact windows to check
* \param int max number of Contacts of the Scheduling problem
* \param int[] population representation of the Genetic scheduler default NULL
*/
private void calculate(ContactWindowsVector contactWindows, int priorityValue, int nrOfAllContacts = 0, int[] population = null, ContactWindowsVector allcontactWindows = null)
{
//list of stations and Satellites
List <string> stationList = contactWindows.getStationNames();
List <string> satelliteList = contactWindows.getSatelliteNames();
//number of times sation and satellite is scheduled
int nrOfStation = contactWindows.getNumberOfStation();
int nrOfSatellites = contactWindows.getNumberOfSatellites();
//
int[] nrOfContactsPerSatellite = new int[nrOfSatellites];
int[] nrOfContactsPerStation = new int[nrOfStation];
//number of Contacts Scheduled
int nrOfScheduledContacts = 0;
//Overall Scheduled Time
double scheduledDuration = 0.0;
//Complete Time of ALL contacts
double allDuaration = 0.0;
//Priority counts
int priorityMax = priorityValue;
int prio = calcualteMaxPrioValue(contactWindows);
for (int i = 0; i < contactWindows.Count(); i++)
{
int stapo = -1;
int satpo = -1;
if (population != null)
{
if (population[i] == 1)
{
stapo = stationList.IndexOf(contactWindows.getAt(i).getStationName());
satpo = satelliteList.IndexOf(contactWindows.getAt(i).getSatName());
nrOfScheduledContacts++;
scheduledDuration += contactWindows.getAt(i).getDuration();
}
}
else
{
if (nrOfAllContacts == 0)
{
if (contactWindows.getAt(i).getSheduledInfo())
{
stapo = stationList.IndexOf(contactWindows.getAt(i).getStationName());
satpo = satelliteList.IndexOf(contactWindows.getAt(i).getSatName());
scheduledDuration += contactWindows.getAt(i).getDuration();
nrOfScheduledContacts++;
}
}
else
{
stapo = stationList.IndexOf(contactWindows.getAt(i).getStationName());
satpo = satelliteList.IndexOf(contactWindows.getAt(i).getSatName());
scheduledDuration += contactWindows.getAt(i).getDuration();
nrOfScheduledContacts++;
}
}
if (allcontactWindows == null)
{
allDuaration += contactWindows.getAt(i).getDuration();
}
if (stapo > -1)
{
nrOfContactsPerStation[stapo]++;
}
if (satpo > -1)
{
nrOfContactsPerSatellite[satpo]++;
}
}
//calculate Fairness for Stations
double a_station = 0.0;
double b_station = 0.0;
for (int i = 0; i < nrOfStation; i++)
{
a_station = a_station + nrOfContactsPerStation[i];
b_station = b_station + Math.Pow(nrOfContactsPerStation[i], 2);
}
val_FairStations = Math.Pow(a_station, 2) / (nrOfStation * b_station);
//calculate Fairnes for Satellites
double a_satellites = 0.0;
double b_satellites = 0.0;
for (int i = 0; i < nrOfSatellites; i++)
{
a_satellites = a_satellites + nrOfContactsPerSatellite[i];
b_satellites = b_satellites + Math.Pow(nrOfContactsPerSatellite[i], 2);
}
val_FairSatellites = Math.Pow(a_satellites, 2) / (nrOfSatellites * b_satellites);
if (nrOfAllContacts == 0)
{
nrOfAllContacts = contactWindows.Count();
}
val_Scheduled = nrOfScheduledContacts / (double)nrOfAllContacts;
val_Duration = scheduledDuration / allDuaration;
val_Priority = (double)prio / (double)priorityMax;
}
