private static BitMap2d GetSingleRegionBitmap(BitMap2d b)
{
BitMap2d bmp = new BitMap2d(b.width, b.height, BitMap2d.WHITE);
Queue <Int16Double> queue = new Queue <Int16Double>();
queue.Enqueue(new Int16Double(0, 0));
bmp.SetPixel(0, 0, BitMap2d.BLACK);
Int16Double[] adj = new Int16Double[4];
while (queue.Count != 0)
{
Int16Double pix = queue.Dequeue();
InitAdj4(adj, pix.X, pix.Y);
for (int i = 0; i < 4; i++)
{
Int16Double t = adj[i];
if (t.X >= 0 && t.X < bmp.width && t.Y >= 0 && t.Y < bmp.height &&
b.GetPixel(t.X, t.Y) == BitMap2d.BLACK && bmp.GetPixel(t.X, t.Y) == BitMap2d.WHITE)
{
bmp.SetPixel(t.X, t.Y, BitMap2d.BLACK);
queue.Enqueue(t);
}
}
}
return(bmp);
}
public void AddLine(int x1, int y1, int x2, int y2)
{
int index1;
if (mapHash[x1, y1] == -1)
{
index1 = polyline.Points.Count;
polyline.Points.Add(new FloatDouble(x1, y1));
mapHash[x1, y1] = index1;
}
else
{
index1 = mapHash[x1, y1];
}
int index2;
if (mapHash[x2, y2] == -1)
{
index2 = polyline.Points.Count;
polyline.Points.Add(new FloatDouble(x2, y2));
mapHash[x2, y2] = index2;
}
else
{
index2 = mapHash[x2, y2];
}
Int16Double line = new Int16Double(index1, index2);
polyline.Edges.Add(line);
}
public PolyLine GenerateLine()
{
Int16Double[] adj = new Int16Double[4];
for (int i = 0; i < Width; i++)
{
for (int j = 0; j < Height; j++)
{
if (bmp.GetPixel(i, j) != BitMap2d.WHITE)
{
continue;
}
InitAdj4(adj, i, j);
for (int k = 0; k < 4; k++)
{
Int16Double t = adj[k];
if (bmp.GetPixel(t.X, t.Y) != BitMap2d.WHITE)
{
Int16Double v1d = AdjIndexToEdge[k][0];
Int16Double v2d = AdjIndexToEdge[k][1];
int x1 = i + v1d.X;
int y1 = j + v1d.Y;
int x2 = i + v2d.X;
int y2 = j + v2d.Y;
pb.AddLine(x1, y1, x2, y2);
}
}
}
}
return(pb.GetLine());
}