private void MakeAndSortAEL(List<float>[] yRows)
{
PointF currentPoint;
int currentY;
foreach (KeyValuePair<Point, Point> edge in data.GetAllEdges())
{
for (EdgePixelsIterator iterator = new EdgePixelsIterator(edge); !iterator.End(); iterator.Next())
{
currentPoint = iterator.Current();
if (!currentPoint.IsEmpty)
{
currentY = (int)(currentPoint.Y - 0.5);
if (yRows[currentY] == null)
yRows[currentY] = new List<float>();
yRows[currentY].Add(currentPoint.X);
}
}
}
foreach (List<float> currentList in yRows)
{
if (currentList != null)
currentList.Sort(new Comparison<float>((float first, float second) =>
{
if (first > second)
return 1;
else
if (first == second)
return 0;
else
return -1;
}));
}
}
public override void FloodFill(FloodFillContext context)
{
Initialize(context);
PointF currentPoint;
int currentY;
Rectangle bounds = data.GetPolygonBounds();
int currentColor;
int xMin = bounds.Left, xMax = bounds.Right;
foreach (KeyValuePair<Point, Point> edge in data.GetAllEdges())
{
for (EdgePixelsIterator iterator = new EdgePixelsIterator(edge); !iterator.End(); iterator.Next())
{
currentPoint = iterator.Current();
if (!currentPoint.IsEmpty)
{
currentY = (int)(currentPoint.Y - 0.5);
for (int currentX = (int)Math.Ceiling(currentPoint.X); currentX < xMax; ++currentX)
{
currentColor = GetPixel(currentX, currentY);
if (currentColor != aBorderColor)
{
if (currentColor == aBackColor)
SetPixel(currentX, currentY, fillColor);
else
SetPixel(currentX, currentY, backColor);
}
}
}
}
}
}
public override void FloodFill(FloodFillContext context)
{
Initialize(context);
PointF currentPoint;
int currentY;
Rectangle bounds = data.GetPolygonBounds();
int currentColor;
int xMin = bounds.Left, xMax = bounds.Right;
int yMin = bounds.Top, yMax = bounds.Bottom;
float K = GetPartitionLineCoefK(), B = GetPartitionLineCoefB();
int startX, endX;
foreach (KeyValuePair<Point, Point> edge in data.GetAllEdges())
{
for (EdgePixelsIterator iterator = new EdgePixelsIterator(edge); !iterator.End(); iterator.Next())
{
currentPoint = iterator.Current();
if (!currentPoint.IsEmpty)
{
currentY = (int)(currentPoint.Y - 0.5);
if (K != float.MaxValue)
{
if ((K * currentPoint.X + B - currentPoint.Y) * (K * xMin + B - yMin) > 0)
{
startX = (int)Math.Ceiling(currentPoint.X);
endX = (int)Math.Ceiling((currentPoint.Y - B) / K);
}
else
{
startX = (int)Math.Ceiling((currentPoint.Y - B) / K);
endX = (int)Math.Ceiling(currentPoint.X);
}
}
else
{
if (currentPoint.X < partitionBegin.X)
{
startX = (int)Math.Ceiling(currentPoint.X);
endX = partitionBegin.X;
}
else
{
startX = partitionBegin.X;
endX = (int)Math.Ceiling(currentPoint.X);
}
}
for (int currentX = startX; currentX < endX; ++currentX)
{
currentColor = GetPixel(currentX, currentY);
if (currentColor != aBorderColor)
{
if (currentColor == aBackColor)
SetPixel(currentX, currentY, fillColor);
else
SetPixel(currentX, currentY, backColor);
}
}
}
}
}
System.Drawing.Graphics.FromImage(bmp).DrawLine(new Pen(fillColor), partitionBegin, partitionEnd);
}
