Deadlock problem
- by DoomStone
Hello i'm having a deadlock problem with the following code. It happens when i call the function getMap(). But i can't reealy see what can cause this.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Drawing;
using System.Drawing.Imaging;
using System.Threading;
using AForge;
using AForge.Imaging;
using AForge.Imaging.Filters;
using AForge.Imaging.Textures;
using AForge.Math.Geometry;
namespace CDIO.Library
{
public class Polygon
{
List<IntPoint> hull;
public Polygon(List<IntPoint> hull)
{
this.hull = hull;
}
public bool inPoly(int x, int y)
{
int i, j = hull.Count - 1;
bool oddNodes = false;
for (i = 0; i < hull.Count; i++)
{
if (hull[i].Y < y && hull[j].Y >= y
|| hull[j].Y < y && hull[i].Y >= y)
{
try
{
if (hull[i].X + (y - hull[i].X) / (hull[j].X - hull[i].X) * (hull[j].X - hull[i].X) < x)
{
oddNodes = !oddNodes;
}
}
catch (DivideByZeroException e)
{
if (0 < x)
{
oddNodes = !oddNodes;
}
}
}
j = i;
}
return oddNodes;
}
public Rectangle getRectangle()
{
int x = -1, y = -1, width = -1, height = -1;
foreach (IntPoint item in hull)
{
if (item.X < x || x == -1)
x = item.X;
if (item.Y < y || y == -1)
y = item.Y;
if (item.X > width || width == -1)
width = item.X;
if (item.Y > height || height == -1)
height = item.Y;
}
return new Rectangle(x, y, width-x, height-y);
}
public Point[] getMap()
{
List<Point> points = new List<Point>();
lock (hull)
{
Rectangle rect = getRectangle();
for (int x = rect.X; x <= rect.X + rect.Width; x++)
{
for (int y = rect.Y; y <= rect.Y + rect.Height; y++)
{
if (inPoly(x, y))
points.Add(new Point(x, y));
}
}
}
return points.ToArray();
}
public float calculateArea()
{
List<IntPoint> list = new List<IntPoint>();
list.AddRange(hull);
list.Add(hull[0]);
float area = 0.0f;
for (int i = 0; i < hull.Count; i++)
{
area += list[i].X * list[i + 1].Y - list[i].Y * list[i + 1].X;
}
area = area / 2;
if (area < 0)
area = area * -1;
return area;
}
}
}
