public void Test_SGG_Creation()
{
var g = new SquireGridGraph(ROW, COL, false);
for (int i = 0; i < g.VerticesNum(); i++)
{
int row, col;
g.GetRowAndColFromVertex(i, out row, out col);
g.SetNeighbor(row, col, Direction.East, 1);
g.SetNeighbor(row, col, Direction.South, 1);
g.SetNeighbor(row, col, Direction.West, 1);
g.SetNeighbor(row, col, Direction.North, 1);
}
ITravel dfs = new Bfs(g, preVisit);
dfs.Travel(16);
Assert.AreEqual(6280, g.EdgeNum());
}
private void timer1_Tick(object sender, EventArgs e)
{
if (_result.Count == 0)
{
timer1.Stop();
Toggle();
return;
}
int row, col;
var bm = (Bitmap)pictureBox1.Image;
Graphics gg = Graphics.FromImage(bm);
Brush brush = new SolidBrush(Color.Blue);
int v = _result[_result.Count - 1];
_result.RemoveAt(_result.Count - 1);
_graph.GetRowAndColFromVertex(v, out row, out col);
gg.FillRectangle(brush, _margin + col * Radius + 3, _margin + row * Radius + 3, 3, 3);
pictureBox1.Image = bm;
pictureBox1.Refresh();
brush.Dispose();
gg.Dispose();
}
public void Test_Graph_DisjSet()
{
var g = new SquireGridGraph(ROW, COL, false);
DisjSet ds = new DisjSet(g.VerticesNum());
for (int i = 0; i < g.VerticesNum(); i++)
{
int row, col, v;
g.GetRowAndColFromVertex(i, out row, out col);
g.SetNeighbor(row, col, Direction.East, 1);
if ((v = g.GetNeighborVertex(i, Direction.East)) != -1)
{
ds.UnionSets(i, v);
}
g.SetNeighbor(row, col, Direction.South, 1);
if ((v = g.GetNeighborVertex(i, Direction.South)) != -1)
{
ds.UnionSets(i, v);
}
g.SetNeighbor(row, col, Direction.West, 1);
if ((v = g.GetNeighborVertex(i, Direction.West)) != -1)
{
ds.UnionSets(i, v);
}
g.SetNeighbor(row, col, Direction.North, 1);
if ((v = g.GetNeighborVertex(i, Direction.North)) != -1)
{
ds.UnionSets(i, v);
}
}
Assert.AreEqual(1, ds.GetConnectedComponentNumber());
}
private void genMazeToolStripMenuItem_Click(object sender, EventArgs e)
{
_graph = new SquireGridGraph(Row, Col, false);
var ds = new DisjSet(_graph.VerticesNum());
var r = new Random(Environment.TickCount);
while (ds.Find(0) != ds.Find(_graph.VerticesNum() - 1))
{
int v1 = r.Next(0, _graph.VerticesNum());
if (_graph.GetDegree(v1) >= 3)
{
continue;
}
Direction direction = getRandomDirection();
int v2 = _graph.GetNeighborVertex(v1, direction);
if (v2 != -1)
{
_graph.SetEdge(v1, v2, 1);
ds.UnionSets(v1, v2);
}
}
var pen = new Pen(Color.Brown, 1);
Brush brush = new SolidBrush(Color.Blue);
var bitmap = new Bitmap(pictureBox1.Width, pictureBox1.Height);
Graphics gg = Graphics.FromImage(bitmap);
for (int i = 1; i < _graph.VerticesNum() - 1; i++)
{
int row, col;
_graph.GetRowAndColFromVertex(i, out row, out col);
int v2 = _graph.GetNeighborVertex(i, Direction.West);
if (v2 == -1 || !_graph.IsConnected(i, v2))
{
// Draw Line
gg.DrawLine(pen, _margin + col * Radius, _margin + row * Radius,
_margin + col * Radius, _margin + row * Radius + Radius);
}
v2 = _graph.GetNeighborVertex(i, Direction.North);
if (v2 == -1 || !_graph.IsConnected(i, v2))
{
// Draw Line
gg.DrawLine(pen, _margin + col * Radius, _margin + row * Radius,
_margin + col * Radius + Radius, _margin + row * Radius);
}
v2 = _graph.GetNeighborVertex(i, Direction.East);
if (v2 == -1 || !_graph.IsConnected(i, v2))
{
// Draw Line
gg.DrawLine(pen, _margin + col * Radius + Radius, _margin + row * Radius,
_margin + col * Radius + Radius, _margin + row * Radius + Radius);
}
v2 = _graph.GetNeighborVertex(i, Direction.South);
if (v2 == -1 || !_graph.IsConnected(i, v2))
{
// Draw Line
gg.DrawLine(pen, _margin + col * Radius, _margin + row * Radius + Radius,
_margin + col * Radius + Radius, _margin + row * Radius + Radius);
}
}
pictureBox1.Image = bitmap;
pictureBox1.Refresh();
pen.Dispose();
brush.Dispose();
gg.Dispose();
}
