private void drawGraph()
{
try
{
Bitmap bmpGraphs = new Bitmap(pbox.Width, pbox.Height);
Graphics g = Graphics.FromImage(bmpGraphs);
g.Clear(Color.White);
g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.Low;
for (int i = 0; i < Edges.Count(); i++)
{
for (int j = 0; j < Edges[i].Count(); j++)
{
if (!directed || !Edges[i][j].isOpposed)
{
Pen linePen = new Pen(Color.DarkBlue);
SolidBrush brushArrow = new SolidBrush(Color.DarkBlue);
SolidBrush brushEllipse = new SolidBrush(Color.White);
SolidBrush brushString = new SolidBrush(Color.Black);
linePen.Width = 5;
if (Edges[i][j].visited)
{
linePen.Color = Color.LightSkyBlue;
brushArrow.Color = Color.LightSkyBlue;
brushString.Color = Color.LightSkyBlue;
}
if (Edges[i][j].selected)
{
linePen.Color = Color.DarkRed;
brushArrow.Color = Color.DarkRed;
brushString.Color = Color.DarkRed;
}
PointF firstPoint = Vertexes[i].position;
PointF secondPoint = Vertexes[Edges[i][j].destination].position;
PointF middlePoint = ExtraMath.GetMiddlePoint(firstPoint, secondPoint);
PointF quarterPoint = ExtraMath.GetMiddlePoint(middlePoint, secondPoint);
try
{
g.DrawLine(linePen, firstPoint, secondPoint);
}
catch { }
if (directed)
{
double thetaLeft = ExtraMath.ToRadians(150);
double thetaRight = ExtraMath.ToRadians(210);
PointF rotationPoint = ExtraMath.GetPointAlongLine(quarterPoint, firstPoint, 25);
PointF leftPart = ExtraMath.RotateAroundPoint(quarterPoint, rotationPoint, thetaLeft);
PointF rightPart = ExtraMath.RotateAroundPoint(quarterPoint, rotationPoint, thetaRight);
PointF[] arrow = { quarterPoint, leftPart, rightPart, quarterPoint };
try
{
g.FillPolygon(brushArrow, arrow, System.Drawing.Drawing2D.FillMode.Alternate);
}
catch { }
}
if (weighted)
{
try
{
g.FillEllipse(brushEllipse, middlePoint.X - 15, middlePoint.Y - 15, 30, 30);
g.DrawString(Edges[i][j].weight.ToString(), new Font("Adobe Gothic Std B", 14),
brushString, middlePoint.X - 10, middlePoint.Y - 10);
}
catch { }
}
}
}
}
foreach (Vertex v in Vertexes)
{
SolidBrush brushVertex = new SolidBrush(Color.Blue);
SolidBrush brushText = new SolidBrush(Color.White);
if (v.visited)
{
brushVertex.Color = Color.LightSkyBlue;
}
if (v.selected)
{
brushVertex.Color = Color.DarkRed;
}
try
{
g.FillEllipse(brushVertex, v.position.X - VertexRadius, v.position.Y - VertexRadius, VertexRadius * 2, VertexRadius * 2);
g.DrawString(v.distance.ToString(), new Font("Adobe Gothic Std B", 15), brushText, v.position.X - VertexRadius + 10, v.position.Y - VertexRadius + 10);
}
catch { }
}
try
{
pbox.Image = bmpGraphs;
pbox.Update();
}
catch
{
}
GC.Collect();
System.Threading.Thread.Sleep(10);
}
catch
{
}
}
