public void Search(int algrithm)
{
ClearPath();
SearchAlgrithm ag = (SearchAlgrithm)algrithm;
PathFind pathFind;
switch (ag)
{
case SearchAlgrithm.BFS:
pathFind = new BreadthFirstSearch();
break;
case SearchAlgrithm.DFS:
pathFind = new DeepFirstSearch();
break;
case SearchAlgrithm.Dijkstra:
pathFind = new DijkstraSearch();
break;
case SearchAlgrithm.Greedy:
pathFind = new GreedyBestFirstSearch();
break;
case SearchAlgrithm.AStar:
pathFind = new AStarSearch();
break;
default:
pathFind = new AStarSearch();
break;
}
Node start = graph.GetNode((int)mapView.startPos.x, (int)mapView.startPos.y);
Node end = graph.GetNode((int)mapView.endPos.x, (int)mapView.endPos.y);
if (pathFind.Find(graph, start, end))
{
path = pathFind.GetPath();
Queue <Node> searchSteps = pathFind.GetSearchSteps();
mainUI.labelSearchDesc.text = pathFind.Name() + " " + pathFind.SearchResultDesc();
mainUI.SearchConsoleTxt = "";
StartCoroutine(DrawSearchSteps(searchSteps, path));
}
else
{
mainUI.labelConsole.text = "no path to the target point from the start point";
}
}
private void button1_Click(object sender, EventArgs e)
{
var runs = (int)numericUpDown1.Value;
var search = new AStarSearch(_grid);
var timer = new Stopwatch();
var times = new List <long>();
var stepTimes = new List <double>();
for (var runIndex = 0; runIndex < runs; runIndex++)
{
var start = new Vector2Int((int)numericUpDown2.Value, (int)numericUpDown3.Value);
var finish = new Vector2Int((int)numericUpDown4.Value, (int)numericUpDown5.Value);
timer.Start();
var greedyPath = search.GreedyFind(start, finish);
var path = search.Find(start, finish);
timer.Stop();
if (!greedyPath.Any())
{
throw new Exception("Any");
}
if (!greedyPath.Last().Location.Equals(finish))
{
finish = greedyPath.Last().Location;
}
if (!greedyPath.First().Location.Equals(start))
{
throw new Exception("Start");
}
RenderPath(_width, _height, start, finish, greedyPath, path, search, _grid, runIndex, timer.Elapsed);
times.Add(timer.ElapsedMilliseconds);
stepTimes.Add((double)timer.ElapsedMilliseconds / greedyPath.Length);
timer.Reset();
}
}
private void button4_Click(object sender, EventArgs e)
{
panel1.MaximumSize = panel1.Size;
var runs = 1;
var image = (Bitmap)Image.FromFile("cavern.gif");
var width = image.Width;
var height = image.Height;
_grid = new Grid(width, height);
if (!Directory.Exists("Paths"))
{
Directory.CreateDirectory("Paths");
}
var timer = new Stopwatch();
var times = new List <long>();
var stepTimes = new List <double>();
var search = new AStarSearch(_grid);
for (var runIndex = 0; runIndex < runs; runIndex++)
{
if (numericUpDown2.Value > _grid.Width)
{
numericUpDown2.Value = _grid.Width - 10;
}
if (numericUpDown3.Value > _grid.Width)
{
numericUpDown3.Value = _grid.Height - 10;
}
if (numericUpDown4.Value > _grid.Width)
{
numericUpDown4.Value = _grid.Width - 10;
}
if (numericUpDown5.Value > _grid.Width)
{
numericUpDown5.Value = _grid.Height - 10;
}
var start = new Vector2Int((int)numericUpDown2.Value, (int)numericUpDown3.Value);
var finish = new Vector2Int((int)numericUpDown4.Value, (int)numericUpDown5.Value);
for (var x = 0; x < width; x++)
{
for (var y = 0; y < height; y++)
{
_grid[x, y].Blocked = (image.GetPixel(x, y).R + image.GetPixel(x, y).G + image.GetPixel(x, y).B) < 120;
}
}
timer.Start();
var greedyPath = search.GreedyFind(start, finish);
var path = search.Find(start, finish);
timer.Stop();
if (!greedyPath.Any() || !greedyPath.Last().Location.Equals(finish) || !greedyPath.First().Location.Equals(start))
{
MessageBox.Show(
"Скорее всего вы указали стену, алгоритм не смог найти заданную точку",
"Введите новое значение",
MessageBoxButtons.OK,
MessageBoxIcon.Error,
MessageBoxDefaultButton.Button1,
MessageBoxOptions.DefaultDesktopOnly);
}
else
{
RenderPath(width, height, start, finish, greedyPath, path, search, _grid, runIndex, timer.Elapsed); //greedy
times.Add(timer.ElapsedMilliseconds);
stepTimes.Add((double)timer.ElapsedMilliseconds / greedyPath.Length);
timer.Reset();
}
}
if (times.Count > 0)
{
Console.WriteLine("Elapsed: Avg: {0:000}ms Min: {1:000}ms Max: {2:000}ms StepAvg:{3:0.000000}ms",
times.Average(), times.Min(), times.Max(), stepTimes.Average());
}
}
private static void Main(string[] args)
{
var runs = 100;
var image = (Bitmap)Image.FromFile("cavern.gif");
var width = image.Width;
var height = image.Height;
var grid = new Grid(width, height);
if (!Directory.Exists("Paths"))
{
Directory.CreateDirectory("Paths");
}
var timer = new Stopwatch();
var times = new List <long>();
var stepTimes = new List <double>();
var search = new AStarSearch(grid);
for (var runIndex = 0; runIndex < runs; runIndex++)
{
var start = new Vector2Int(10, 10);
var goal = new Vector2Int(width - 10, height - 10);
for (var x = 0; x < width; x++)
{
for (var y = 0; y < height; y++)
{
grid[x, y].Blocked = (image.GetPixel(x, y).R + image.GetPixel(x, y).G + image.GetPixel(x, y).B) / 3 < 128;
}
}
timer.Start();
var path = search.Find(start, goal);
timer.Stop();
if (!path.Any() || !path.Last().Location.Equals(goal) || !path.First().Location.Equals(start))
{
throw new Exception("Failure");
}
RenderPath(width, height, start, goal, path, search, grid, runIndex, timer.Elapsed);
times.Add(timer.ElapsedMilliseconds);
stepTimes.Add((double)timer.ElapsedMilliseconds / path.Length);
Console.SetCursorPosition(0, 0);
Console.WriteLine("Start: {0} Goal: {1}", start, goal);
Console.SetCursorPosition(0, 1);
Console.WriteLine("Step: {0:0000} - {1:000.00000000}ms - {2:p}", path.Length, timer.ElapsedMilliseconds,
(double)(runIndex + 1) / runs);
timer.Reset();
}
Console.WriteLine("Elapsed: Avg: {0:000}ms Min: {1:000}ms Max: {2:000}ms StepAvg:{3:0.000000}ms",
times.Average(), times.Min(), times.Max(), stepTimes.Average());
Console.ReadKey();
}
