public static void Draw_Triangle(Dreieck dreieck, Canvas target)
{
Polygon triangle = new Polygon();
var points = new PointCollection();
triangle.Stroke = Brushes.Black;
triangle.StrokeThickness = 1;
triangle.Fill = Brushes.OrangeRed;
points.Add(dreieck.PunktA);
points.Add(dreieck.PunktB);
points.Add(dreieck.PunktC);
triangle.Points = points;
triangle.MouseEnter += OnTriangleHover;
triangle.MouseLeave += OnTriangleAway;
target.Children.Add(triangle);
}
public static void Generate_Triangle(Point pt1, string direction, Canvas canvas)
{
Dreieck temp = new Dreieck();
temp.PunktA = pt1;
switch (direction)
{
case "rd":
temp.PunktB = new Point(pt1.X + 1, pt1.Y);
temp.PunktC = new Point(pt1.X + 1, pt1.Y + 1);
temp.Orientation = 3;
break;
case "ru":
temp.PunktB = new Point(pt1.X + 1, pt1.Y);
temp.PunktC = new Point(pt1.X + 1, pt1.Y - 1);
temp.Orientation = 2;
break;
case "ld":
temp.PunktB = new Point(pt1.X - 1, pt1.Y);
temp.PunktC = new Point(pt1.X - 1, pt1.Y + 1);
temp.Orientation = 4;
break;
case "lu":
temp.PunktB = new Point(pt1.X - 1, pt1.Y);
temp.PunktC = new Point(pt1.X - 1, pt1.Y - 1);
temp.Orientation = 1;
break;
case "dr":
temp.PunktB = new Point(pt1.X, pt1.Y + 1);
temp.PunktC = new Point(pt1.X + 1, pt1.Y + 1);
temp.Orientation = 1;
break;
case "ur":
temp.PunktB = new Point(pt1.X, pt1.Y - 1);
temp.PunktC = new Point(pt1.X + 1, pt1.Y - 1);
temp.Orientation = 4;
break;
case "dl":
temp.PunktB = new Point(pt1.X, pt1.Y + 1);
temp.PunktC = new Point(pt1.X - 1, pt1.Y + 1);
temp.Orientation = 2;
break;
case "ul":
temp.PunktB = new Point(pt1.X, pt1.Y - 1);
temp.PunktC = new Point(pt1.X - 1, pt1.Y - 1);
temp.Orientation = 3;
break;
case "q1":
temp.PunktB = new Point(pt1.X + 1, pt1.Y);
temp.PunktC = new Point(pt1.X, pt1.Y - 1);
temp.Orientation = 1;
break;
case "q2":
temp.PunktB = new Point(pt1.X - 1, pt1.Y);
temp.PunktC = new Point(pt1.X, pt1.Y - 1);
temp.Orientation = 2;
break;
case "q3":
temp.PunktB = new Point(pt1.X - 1, pt1.Y);
temp.PunktC = new Point(pt1.X, pt1.Y + 1);
temp.Orientation = 3;
break;
case "q4":
temp.PunktB = new Point(pt1.X + 1, pt1.Y);
temp.PunktC = new Point(pt1.X, pt1.Y + 1);
temp.Orientation = 4;
break;
default:
break;
}
temp.Convert(leX, leY);
if (Validate_Triangle(temp, canvas))
{
Draw_Triangle(temp, canvas);
DreieckListe.Add(temp);
//Controls(direction);
}
}
public static bool Validate_Triangle(Dreieck _dreieck, Canvas canvas)
{
/* 1. Dreieck im Koordinatenbereich
* 2. Dreieck noch nicht vorhanden
* 3. Dreieck muss 2 Punkte mit einem Dreieck gemeinsam haben
* 4. Dreieck darf andere Dreiecke nicht überlappen (Mehrzahl!!!)*/
//1)
if (_dreieck.GetMax().X >= canvas.Width | _dreieck.GetMax().Y >= canvas.Height | _dreieck.GetMin().X <= 0 | _dreieck.GetMin().Y <= 0)
{
return(false);
}
//2) und 3) und 4)
var PointListCurrentListItem = new List <Point>();
var samePoints = new List <Point>();
var eligibleDreieckeToAddTo = new List <Dreieck>();
bool overlap = false;
if (DreieckListe.Count > 0)
{
foreach (var listItem in DreieckListe)
{
PointListCurrentListItem.Add(_dreieck.PunktA);
PointListCurrentListItem.Add(_dreieck.PunktB);
PointListCurrentListItem.Add(_dreieck.PunktC);
PointListCurrentListItem.Add(listItem.PunktA);
PointListCurrentListItem.Add(listItem.PunktB);
PointListCurrentListItem.Add(listItem.PunktC);
if (_dreieck.PunktA == listItem.PunktA | _dreieck.PunktA == listItem.PunktB | _dreieck.PunktA == listItem.PunktC)
{
samePoints.Add(_dreieck.PunktA);
}
if (_dreieck.PunktB == listItem.PunktA | _dreieck.PunktB == listItem.PunktB | _dreieck.PunktB == listItem.PunktC)
{
samePoints.Add(_dreieck.PunktB);
}
if (_dreieck.PunktC == listItem.PunktA | _dreieck.PunktC == listItem.PunktB | _dreieck.PunktC == listItem.PunktC)
{
samePoints.Add(_dreieck.PunktC);
}
switch (samePoints.Count)
{
case 2: //3)
eligibleDreieckeToAddTo.Add(listItem);
switch (_dreieck.Orientation)
{
case 1:
if ((listItem.Orientation == 2 && _dreieck.GetMin().X != listItem.GetMax().X) | (listItem.Orientation == 4 && _dreieck.GetMax().Y != listItem.GetMin().Y))
{
overlap = true;
}
break;
case 2:
if ((listItem.Orientation == 1 && _dreieck.GetMax().X != listItem.GetMin().X) | (listItem.Orientation == 3 && _dreieck.GetMax().Y != listItem.GetMin().Y))
{
overlap = true;
}
break;
case 3:
if ((listItem.Orientation == 2 && _dreieck.GetMax().X == listItem.GetMax().X) | (listItem.Orientation == 4 && _dreieck.GetMin().Y == listItem.GetMin().Y))
{
overlap = true;
}
break;
case 4:
if ((listItem.Orientation == 1 && _dreieck.GetMin().X == listItem.GetMin().X) | (listItem.Orientation == 3 && _dreieck.GetMin().Y == listItem.GetMin().Y))
{
overlap = true;
}
break;
}
break;
case 3: //2)
return(false);
default:
break;
}
samePoints.Clear();
PointListCurrentListItem.Clear();
}
}
else //erstes dreieck
{
return(true);
}
if (eligibleDreieckeToAddTo.Count != 0 && !overlap)
{
return(true);
}
else
{
return(false);
}
}