private void Calculate_Vertex_Guards(object sender, RoutedEventArgs e)
{
Triangulation t1 = new Triangulation();
if (!p1.closed)
{
p1.close();
}
if (p1.clockwise && (p1.area() < 0)) p1.reverseCollection();
else if (!p1.clockwise && (p1.area() < 0)) p1.reverseCollection();
//the algo deletes points from the List so we create a backup list
p1.doBackup();
DiagonalSet d1 = t1.triangulate(p1);
p1.addDiagonals(d1);
p1.Diagonals = d1;
//restore the points
p1.restorePoints();
TriangulationColoring CSet = t1.color(d1, p1); // 3 color the polygon
CSet.setGuards(p1);
Triangulation t2 = new Triangulation();
}
internal void readCoordinateFile(string inputFile)
{
Triangulation triangulation = new Triangulation();
try
{
using (StreamReader sr = File.OpenText(inputFile))
{
String input;
while ((input = sr.ReadLine()) != null)
{
String[] words = input.Split(',');
if (words.Length > 2)
{
throw new FormatException("Length: " + words.Length.ToString());
}
ColoredPoint c1 = new ColoredPoint(Convert.ToDouble(words[0]), Convert.ToDouble(words[1]));
if (this.vertices.Count == 0 ||
triangulation.noIntersection(this.vertices[0].point.X, this.vertices[0].point.Y, c1.point.X, c1.point.Y, this))
{
//this.vertices.Add(c1);
this.AddVertex(c1);
}
else
{
//error, we have an intersection
}
}
if (this.vertices.Count > 3)
{
this.close();
}
}
}
catch (Exception e)
{
// Configure the message box to be displayed
string messageBoxText = e.Message;
string caption = "Error";
MessageBoxButton button = MessageBoxButton.OK;
MessageBoxImage icon = MessageBoxImage.Error;
MessageBox.Show(messageBoxText, caption, button, icon);
return;
}
}
public bool AddVertexFromMouseClick(ColoredPoint vertex)
{
Triangulation triangulation = new Triangulation();
if (this.closed == true) return false;
if (!containsWithinRange(vertex))
{
if (this.vertices.Count == 0 ||
triangulation.noIntersection(this.vertices[0].point.X, this.vertices[0].point.Y, vertex.point.X, vertex.point.Y, this))
{
vertex.index = this.vertices.Count;
this.vertices.Add(vertex);
OnPropertyChanged("vertices");
return true;
}
else
{
return false;
}
}
else
{
//if we click on the first point, then we are closing the polygon
if (vertex.withinRoot(this.vertices[0]))
{
this.closed = true;
OnPropertyChanged("vertices");
return true;
}
else
{
return false;
}
}
}