// Another solution for DetermineMainGroup (taking 2 groups), but it is not used in this program.
// It is not applied becuase it may cause a lot of overlap, and solving the overlap is expensive.
// Compared with the benefits it brings (less loss of information), we decided to abandon this solution.
#region another solution
private List <AggregatedDot> DetermineMainGroupSolution2(List <Dot> dots)
{
List <AggregatedDot> result = new List <AggregatedDot>();
List <Dot> westDots = new List <Dot>();
List <Dot> northDots = new List <Dot>();
List <Dot> southDots = new List <Dot>();
List <Dot> eastDots = new List <Dot>();
List <Dot> nonEuDots = new List <Dot>();
Region mainGroupRegion = Region.Error;
Region secondaryGroupRegion = Region.Error;
int west = 0;
int east = 0;
int south = 0;
int north = 0;
int noneu = 0;
foreach (Dot dot in dots)
{
if (dot.Region == Region.West)
{
west++; westDots.Add(dot);
}
else if (dot.Region == Region.East)
{
east++; eastDots.Add(dot);
}
else if (dot.Region == Region.North)
{
north++; northDots.Add(dot);
}
else if (dot.Region == Region.South)
{
south++; southDots.Add(dot);
}
else if (dot.Region == Region.NonEU)
{
noneu++; nonEuDots.Add(dot);
}
}
var numbers = new List <double>();
numbers.Add(west);
numbers.Add(east);
numbers.Add(north);
numbers.Add(south);
numbers.Add(noneu);
var maxNumber = numbers.Max();
List <Dot> mainGroupDots = new List <Dot>();
if (maxNumber == west)
{
mainGroupRegion = Region.West; mainGroupDots = westDots;
}
else if (maxNumber == east)
{
mainGroupRegion = Region.East; mainGroupDots = eastDots;
}
else if (maxNumber == north)
{
mainGroupRegion = Region.North; mainGroupDots = northDots;
}
else if (maxNumber == south)
{
mainGroupRegion = Region.South; mainGroupDots = southDots;
}
else if (maxNumber == noneu)
{
mainGroupRegion = Region.NonEU; mainGroupDots = nonEuDots;
}
numbers.Remove(maxNumber);
maxNumber = numbers.Max();
List <Dot> secondaryGroupDots = new List <Dot>();
if (maxNumber == west)
{
secondaryGroupRegion = Region.West; secondaryGroupDots = westDots;
}
else if (maxNumber == east)
{
secondaryGroupRegion = Region.East; secondaryGroupDots = eastDots;
}
else if (maxNumber == north)
{
secondaryGroupRegion = Region.North; secondaryGroupDots = northDots;
}
else if (maxNumber == south)
{
secondaryGroupRegion = Region.South; secondaryGroupDots = southDots;
}
else if (maxNumber == noneu)
{
secondaryGroupRegion = Region.NonEU; secondaryGroupDots = nonEuDots;
}
Circle circle = MinimumCoverCircle.GetMinimumCoverCircle(dots);
result.Add(new AggregatedDot(new Dot(mainGroupRegion, new PointF((float)circle.c.x, (float)circle.c.y)), Math.Max((int)(circle.r * _ratio * Math.Min(_width, _height)), Setting.MinimumAggregationDotRadius)));
circle = MinimumCoverCircle.GetMinimumCoverCircle(dots);
result.Add(new AggregatedDot(new Dot(secondaryGroupRegion, new PointF((float)circle.c.x, (float)circle.c.y)), Math.Max((int)(circle.r * _ratio * Math.Min(_width, _height)), Setting.MinimumAggregationDotRadius)));
return(result);
}
// this determines the main region of people inside a group.
// in other words, this decides the color of this group.
// The return list is design for alternative solutions.
// For this solution, the return list always contains exactly 1 aggregated Dot.
private List <AggregatedDot> DetermineMainGroupSolution1(List <Dot> dots)
{
List <AggregatedDot> result = new List <AggregatedDot>();
Region mainGroup = Region.Error;
int west = 0;
int east = 0;
int south = 0;
int north = 0;
int noneu = 0;
foreach (Dot dot in dots)
{
if (dot.Region == Region.West)
{
west++;
}
else if (dot.Region == Region.East)
{
east++;
}
else if (dot.Region == Region.North)
{
north++;
}
else if (dot.Region == Region.South)
{
south++;
}
else if (dot.Region == Region.NonEU)
{
noneu++;
}
}
double westpercentage = Convert.ToDouble(west) / dots.Count / Math.Sqrt(Setting.WestPecrentage);
double eastpercentage = Convert.ToDouble(east) / dots.Count / Math.Sqrt(Setting.EastPercentage);
double southpercentage = Convert.ToDouble(south) / dots.Count / Math.Sqrt(Setting.SouthPercentage);
double northpercentage = Convert.ToDouble(north) / dots.Count / Math.Sqrt(Setting.NorthPercentage);
double noneupercentage = Convert.ToDouble(noneu) / dots.Count / Math.Sqrt(Setting.NonEuPercentage);
var numbers = new List <double>();
numbers.Add(westpercentage);
numbers.Add(eastpercentage);
numbers.Add(southpercentage);
numbers.Add(northpercentage);
numbers.Add(noneupercentage);
var maxNumber = numbers.Max();
if (maxNumber == westpercentage)
{
mainGroup = Region.West;
}
else if (maxNumber == eastpercentage)
{
mainGroup = Region.East;
}
else if (maxNumber == southpercentage)
{
mainGroup = Region.South;
}
else if (maxNumber == northpercentage)
{
mainGroup = Region.North;
}
else if (maxNumber == noneupercentage)
{
mainGroup = Region.NonEU;
}
Circle circle = MinimumCoverCircle.GetMinimumCoverCircle(dots);
result.Add(new AggregatedDot(new Dot(mainGroup, new PointF((float)circle.c.x, (float)circle.c.y)), Math.Max((int)(circle.r * _ratio * Math.Min(_width, _height)), Setting.MinimumAggregationDotRadius)));
return(result);
}