public static void drawGraph(PictureBox panel, Graph graph)
{
for (int i = 0; i < graph.data.Length; i++)
graph.nodes[i].drawNode(panel);
for (int i = 0; i < graph.numberOfEdges; i++)
graph.edges[i].drawEdge(panel);
}
private void buttonClear_Click(object sender, EventArgs e)
{
graph = null;
createGraph = null;
dgwMatrix.Rows.Clear();
dgwMatrix.Columns.Clear();
dgwMatrix.Visible = false;
pictureBox1.Controls.Clear();
pictureBox1.Refresh();
dgwOutput.Rows.Clear();
dgwOutput.Visible = false;
listOutput.Items.Clear();
}
public static void AlgFloydYorshall(PictureBox pictureBox1, Graph graph, DataGridView matrix, ListBox listOutput)
{
count = 0;
listOutput.Items.Add(" Алгоритм Флойда-Уоршала. ");
listOutput.Items.Add(" Матриця найкоротших шляхів.");
matrix.ColumnCount = graph.nodes.Length;
for (int i = 0; i < graph.nodes.Length; i++)
{
matrix.Columns[i].Name = Convert.ToString(i);
matrix.Columns[i].Width = matrix.Width / (graph.nodes.Length + 1);
matrix.Rows.Add();
}
int[][] D;
D = graph.data;
for (int i = 0; i < D.Length; i++)
for (int j = 0; j < D.Length; j++)
if (D[i][j] == -1) D[i][j] = 1000;
for (int k = 0; k < D.Length; k++)
for (int i = 0; i < D.Length; i++)
for (int j = 0; j < D.Length; j++)
{
D[i][j] = Math.Min(D[i][j], D[i][k] + D[k][j]);
count++;
}
for (int i = 0; i < D.Length; i++)
D[i][i] = 0;
for (int i = 0; i < D.Length; i++)
for (int j = 0; j < D.Length; j++)
if (D[i][j] != 1000)
matrix.Rows[i].Cells[j].Value = D[i][j];
else matrix.Rows[i].Cells[j].Value = '∞';
StreamWriter sw;
if (File.Exists("fLoydaAlg.txt") == true)
File.Delete("floydaAlg.txt");
sw = File.CreateText("floydaAlg.txt");
sw.WriteLine(Convert.ToString(graph.data.Length));
for (int i = 0; i < D.Length; i++)
for (int j = 0; j < D.Length; j++)
sw.WriteLine(D[i][j]);
sw.WriteLine(count);
sw.Close();
}
private static int[] belman(Graph graph, int v)
{
int[]D;
D = graph.data[v];
for (int i = 0; i < D.Length; i++)
if (D[i] == -1) D[i] = 1000;
D[v] = 0;
int n = graph.data.Length;
int m = graph.edges.Length;
//for (int i=0; i<n-1; ++i)
for (int j = 0; j < m; ++j)
{
if (D[Array.IndexOf(graph.nodes, graph.edges[j].startNode)] < 1000)
D[Array.IndexOf(graph.nodes, graph.edges[j].endNode)] =
Math.Min(D[Array.IndexOf(graph.nodes, graph.edges[j].endNode)], D[Array.IndexOf(graph.nodes, graph.edges[j].startNode)] + graph.edges[j].weightEdge);
count++;
}
return D;
}
private void buttonSave_Click(object sender, EventArgs e)
{
graph = new Graph(createGraph.getNodes(), createGraph.getEdges());
pictureBox1.MouseClick -= new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseClick);
dgwMatrix.CellValueChanged -= new DataGridViewCellEventHandler(this.matrix_CellValueChanged);
dgwMatrix.ReadOnly = true;
graph = new Graph(createGraph.getNodes(), createGraph.getEdges());
StreamWriter sw = File.CreateText("j");
Stream myStream;
SaveFileDialog saveFileDialog1 = new SaveFileDialog();
saveFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
saveFileDialog1.FilterIndex = 2;
saveFileDialog1.RestoreDirectory = true;
saveFileDialog1.FileName = "graph";
saveFileDialog1.DefaultExt = ".txt";
if (saveFileDialog1.ShowDialog() == DialogResult.OK)
{
StringBuilder sb = new StringBuilder();
sb.AppendLine(graph.data.Length.ToString());
for (int i = 0; i < graph.data.Length; i++)
{
for (int j = 0; j < graph.data.Length; j++)
{
if (graph.data[i][j] != -1)
sb.AppendLine("" + (i+1).ToString() + " " + (j+1).ToString() + " " + graph.data[i][j]);
}
}
sb.AppendLine();
sb.AppendLine();
using (StreamWriter outfile = new StreamWriter(saveFileDialog1.FileName, true))
{
outfile.Write(sb.ToString());
}
}
}
public static void algDeijkstra(PictureBox pictureBox1, Graph graph, DataGridView matrix, ListBox listOutput)
{
count = 0;
listOutput.Items.Add(" Алгоритм Дейкстри. ");
listOutput.Items.Add(" Матриця найкоротших шляхів.");
matrix.ColumnCount = graph.nodes.Length;
for (int i = 0; i < graph.nodes.Length; i++)
{
matrix.Columns[i].Name = Convert.ToString(i);
matrix.Columns[i].Width = matrix.Width / (graph.nodes.Length + 1) ;
matrix.Rows.Add();
}
int[][] ans = new int[graph.nodes.Length][];
for (int i = 0; i < graph.data.Length; i++)
{
Edge[] edge = graph.edges;
Node[] node = graph.nodes;
node[i].highLight(pictureBox1, Color.Brown);
ans[i] = deijkstra(pictureBox1, i, ref edge, ref node, graph.data);
for (int j = 0; j < ans.Length; j++)
matrix.Rows[i].Cells[j].Value = Convert.ToString(ans[i][j]);
Thread.Sleep(1000);
SystemFunction.drawGraph(pictureBox1, graph);
}
StreamWriter sw;
if (File.Exists("deijkstraAlg.txt") == true)
File.Delete("deijkstraAlg.txt");
sw = File.CreateText("deijkstraAlg.txt");
sw.WriteLine(Convert.ToString(graph.data.Length));
for (int i = 0; i < ans.Length; i++)
for (int j = 0; j < ans.Length; j++)
sw.WriteLine(ans[i][j]);
sw.WriteLine(count);
sw.Close();
}
public static void Algoritm_Forda(PictureBox pictureBox1, Graph graph, DataGridView matrix, ListBox listOutput)
{
listOutput.Items.Clear();
listOutput.Items.Add("Алгоритм Белмана-Форда");
listOutput.Items.Add("Матриця найкоротших війдстаней");
count = 0;
matrix.ColumnCount = graph.nodes.Length;
for (int i = 0; i < graph.nodes.Length; i++)
{
matrix.Columns[i].Name = Convert.ToString(i);
matrix.Columns[i].Width = matrix.Width / (graph.nodes.Length + 1);
matrix.Rows.Add();
}
int[][] D = new int[graph.data.Length][];
for (int i = 0; i < graph.data.Length; i++)
D[i] = belman(graph, i);
for (int i = 0; i < D.Length; i++)
for (int j = 0; j < D.Length; j++)
if (D[i][j] != 1000)
matrix.Rows[i].Cells[j].Value = D[i][j];
else matrix.Rows[i].Cells[j].Value = '∞';
StreamWriter sw;
if (File.Exists("fordaAlg.txt") == true)
File.Delete("fordaAlgg.txt");
sw = File.CreateText("fordaAlg.txt");
sw.WriteLine(Convert.ToString(graph.data.Length));
for (int i = 0; i < D.Length; i++)
for (int j = 0; j < D.Length; j++)
sw.WriteLine(D[i][j]);
sw.WriteLine(count);
sw.Close();
}
private void downloadFromFile_Click(object sender, EventArgs e)
{
AboutProgram.Hide();
aboutAuthorPanel.Hide();
buttonClear.Show();
paintPanel.Show();
Stream myStream = null;
OpenFileDialog openFileDialog1 = new OpenFileDialog();
openFileDialog1.InitialDirectory = "";
openFileDialog1.Filter = "txt files (*.txt)|*.txt|All files (*.*)|*.*";
openFileDialog1.FilterIndex = 2;
openFileDialog1.RestoreDirectory = true;
if (openFileDialog1.ShowDialog() == DialogResult.OK)
{
try
{
if ((myStream = openFileDialog1.OpenFile()) != null)
{
using (myStream)
{
int[][] data = SystemFunction.readFile(openFileDialog1.FileName);
dgwMatrix.Visible = true;
graph = new Graph(this.dgwMatrix, data);
dgwMatrix.CellValueChanged -= new DataGridViewCellEventHandler(this.matrix_CellValueChanged);
SystemFunction.drawGraph(pictureBox1, graph);
dgwMatrix.Visible = true;
pictureBox1.MouseClick -= new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseClick);
pictureBox1.MouseDoubleClick -= new System.Windows.Forms.MouseEventHandler(this.pictureBox1_MouseDoubleClick);
}
}
}
catch (Exception ex)
{
MessageBox.Show(" Щось пішло не так. Спробуйте ще раз ");
}
}
}