//вычисление вершин окружностей
void calcVert(double rad)
{
for (int i = 0; i < ArrVertex.Count(); i++)
{
GraphV[i] = new GraphVertex((rad * Math.Sin(i * 2 * Math.PI / ArrVertex.Count()) + pictureBox.Width / 2) - VertRad, (rad * Math.Cos(i * 2 * Math.PI / ArrVertex.Count()) + pictureBox.Height / 2) - VertRad);
}
}
private void Graph_Load(object sender, EventArgs e)
{
//рисование графа
GraphV = new GraphVertex[ArrVertex.Count()];
double radius = calcRad();
Pen pen = new Pen(Color.Black);
Pen OutputPen = new Pen(Color.Red);
Pen pen2 = new Pen(Color.Black);
pen2.StartCap = System.Drawing.Drawing2D.LineCap.Triangle;
Brush br = Brushes.Black;
pen.Width = 5;
OutputPen.Width = 5;
pen2.Width = 1.5f;
bitmap = new Bitmap(pictureBox.Width, pictureBox.Height);
graph = new Bitmap(pictureBox.Image);
Graphics g = Graphics.FromImage(graph);
calcVert(radius);
Brush wh = Brushes.White;
createEdges();
for (int i = 0; i < Edges.Count(); i++)
{
g.DrawLine(pen2, (float)(Edges[i].v1.x + VertRad), (float)(Edges[i].v1.y + VertRad), (float)(Edges[i].v2.x + VertRad), (float)(Edges[i].v2.y + VertRad));
}
for (int i = 0; i < GraphV.Count(); i++)
{
//рисуем круги
if (ArrVertex[i].isOutput)
{
g.DrawEllipse(OutputPen, (float)GraphV[i].x, (float)GraphV[i].y, (float)VertRad * 2, (float)VertRad * 2);
}
else
{
g.DrawEllipse(pen, (float)GraphV[i].x, (float)GraphV[i].y, (float)VertRad * 2, (float)VertRad * 2);
}
g.FillEllipse(wh, (float)GraphV[i].x, (float)GraphV[i].y, (float)VertRad * 2, (float)VertRad * 2);
g.DrawString("C" + (i + 1).ToString(), new Font("Microsoft Sans Serif", 8.5F, FontStyle.Regular), br, (float)(GraphV[i].x + VertRad / 4), (float)(GraphV[i].y + VertRad / 4));
}
pictureBox.Image = graph;
}
//вычисление адиуса большой окружности
double calcRad()
{
double rad = 20;
double VertDiag;
VertDiag = Math.Sqrt(VertRad * VertRad + VertRad * VertRad);
double x1, y1, x2, y2, y, x, k = 0;
//проверка каого-то правила с полудиагональю
while (k < VertDiag * 4)
{
rad *= 1.2;
//нахождение оптимального радиуса
x1 = rad * Math.Sin(2 * Math.PI / ArrVertex.Count()) + pictureBox.Width / 2;
y1 = rad * Math.Cos(2 * Math.PI / ArrVertex.Count()) + pictureBox.Height / 2;
x2 = rad * Math.Sin(2 * 2 * Math.PI / ArrVertex.Count()) + pictureBox.Width / 2;
y2 = rad * Math.Cos(2 * 2 * Math.PI / ArrVertex.Count()) + pictureBox.Height / 2;
x = Math.Abs(x1) - Math.Abs(x2);
y = Math.Abs(y1) - Math.Abs(y2);
k = Math.Sqrt(x * x + y * y);
}
return(rad);
}