protected virtual void ExcuteFloodFill(BitMap2d data, Int16Double seed)
{
this.bmp = data;
data.ResetVisitCount();
flagsMap = new FlagMap2d(data.width, data.height);
Int16Double[] adjPoints4 = new Int16Double[4];
flagsMap.SetFlagOn(seed.X, seed.Y, true);
container.Push(seed);
Process(seed);
while (!container.Empty())
{
Int16Double p = container.Pop();
InitAdj4(ref adjPoints4, ref p);
for (int adjIndex = 0; adjIndex < 4; adjIndex++)
{
Int16Double t = adjPoints4[adjIndex];
if (t.X < data.width && t.X >= 0 && t.Y < data.height && t.Y >= 0)
{
if (!flagsMap.GetFlagOn(t.X, t.Y) && IncludePredicate(t))
{
flagsMap.SetFlagOn(t.X, t.Y, true);
container.Push(t);
Process(t);
}
}
}
}
return;
}
private void CheckRange(int yleft, int yright, int x, ParentDirectionsY ptype)
{
for (int i = yleft; i <= yright;)
{
if ((!flagsMap.GetFlagOn(x, i)) && IncludePredicate(x, i))
{
int lb = i;
int rb = i + 1;
while (rb <= yright && (!flagsMap.GetFlagOn(x, rb)) && IncludePredicate(x, rb))
{
rb++;
}
rb--;
SpanY span = new SpanY();
span.YLeft = lb;
span.YRight = rb;
span.X = x;
if (lb == yleft && rb == yright)
{
span.Extended = ExtendTypesY.UnRez;
}
else if (rb == yright)
{
span.Extended = ExtendTypesY.RightRequired;
}
else if (lb == yleft)
{
span.Extended = ExtendTypesY.LeftRequired;
}
else
{
span.Extended = ExtendTypesY.AllRez;
}
span.ParentDirection = ptype;
for (int j = lb; j <= rb; j++)
{
flagsMap.SetFlagOn(x, j, true);
Process(new Int16Double(x, j));
}
queue.Push(span);
i = rb + 1;
}
else
{
i++;
}
}
}
protected void CheckRange(int xleft, int xright, int y, ParentDirections ptype)
{
for (int i = xleft; i <= xright;)
{
if ((!flagsMap.GetFlagOn(i, y)) && IncludePredicate(i, y))
{
int lb = i;
int rb = i + 1;
while (rb <= xright && (!flagsMap.GetFlagOn(rb, y)) && IncludePredicate(rb, y))
{
rb++;
}
rb--;
Span span = new Span();
span.XLeft = lb;
span.XRight = rb;
span.Y = y;
if (lb == xleft && rb == xright)
{
span.Extended = ExtendTypes.UnRez;
}
else if (rb == xright)
{
span.Extended = ExtendTypes.RightRequired;
}
else if (lb == xleft)
{
span.Extended = ExtendTypes.LeftRequired;
}
else
{
span.Extended = ExtendTypes.AllRez;
}
span.ParentDirection = ptype;
for (int j = lb; j <= rb; j++)
{
flagsMap.SetFlagOn(j, y, true);
Process(new Int16Double(j, y));
}
container.Push(span);
i = rb + 1;
}
else
{
i++;
}
}
}//区段法的CheckRange 注意与扫描线的CheckRange的不同
}//该函数为扫描线法主体
protected void CheckRange(int xleft, int xright, int y)
{
for (int i = xleft; i <= xright;)
{
if ((!flagsMap.GetFlagOn(i, y)) && IncludePredicate(i, y))
{
int rb = i + 1;
while (rb <= xright && (!flagsMap.GetFlagOn(rb, y)) && IncludePredicate(rb, y))
{
rb++;
}
rb--;
Int16Double t = new Int16Double(rb, y);
flagsMap.SetFlagOn(rb, y, true);
container.Push(t);
Process(t);
i = rb + 1;
}
else
{
i++;
}
}
}//CheckRange操作
protected virtual void ExcuteScanlineFill(BitMap2d data, Int16Double seed)
{
this.bmp = data;
data.ResetVisitCount();
flagsMap = new FlagMap2d(data.width, data.height);
flagsMap.SetFlagOn(seed.X, seed.Y, true);
container.Push(seed);
Process(seed);
while (!container.Empty())
{
Int16Double p = container.Pop();
int xleft = FindXLeft(p);
int xright = FindXRight(p);
if (p.Y - 1 >= 0)
{
CheckRange(xleft, xright, p.Y - 1);
}
if (p.Y + 1 < data.height)
{
CheckRange(xleft, xright, p.Y + 1);
}
}
}//该函数为扫描线法主体
public virtual void ExcuteSpanFill_S(BitMap2d data, Int16Double seed)
{
this.bmp = data;
data.ResetVisitCount();
flagsMap = new FlagMap2d(data.width, data.height);
queue = new Container_Stack <SpanY>();
Process(seed);
flagsMap.SetFlagOn(seed.X, seed.Y, true);
SpanY seedspan = new SpanY();
seedspan.YLeft = seed.Y;
seedspan.YRight = seed.Y;
seedspan.X = seed.X;
seedspan.ParentDirection = ParentDirectionsY.Non;
seedspan.Extended = ExtendTypesY.UnRez;
queue.Push(seedspan);
while (!queue.Empty())
{
SpanY span = queue.Pop();
#region AllRez
if (span.Extended == ExtendTypesY.AllRez)
{
if (span.ParentDirection == ParentDirectionsY.X2)
{
if (span.X - 1 >= 0)
{
CheckRange(span.YLeft, span.YRight, span.X - 1, ParentDirectionsY.X2);
}
continue;
}
if (span.ParentDirection == ParentDirectionsY.X0)
{
if (span.X + 1 < bmp.width)
{
CheckRange(span.YLeft, span.YRight, span.X + 1, ParentDirectionsY.X0);
}
continue;
}
throw new Exception();
}
#endregion
#region UnRez
if (span.Extended == ExtendTypesY.UnRez)
{
int yl = FindYLeft(span.YLeft, span.X);
int yr = FindYRight(span.YRight, span.X);
if (span.ParentDirection == ParentDirectionsY.X2)
{
if (span.X - 1 >= 0)
{
CheckRange(yl, yr, span.X - 1, ParentDirectionsY.X2);
}
if (span.X + 1 < bmp.width)
{
if (yl != span.YLeft)
{
CheckRange(yl, span.YLeft, span.X + 1, ParentDirectionsY.X0);
}
if (span.YRight != yr)
{
CheckRange(span.YRight, yr, span.X + 1, ParentDirectionsY.X0);
}
}
continue;
}
if (span.ParentDirection == ParentDirectionsY.X0)
{
if (span.X + 1 < bmp.width)
{
CheckRange(yl, yr, span.X + 1, ParentDirectionsY.X0);
}
if (span.X - 1 >= 0)
{
if (yl != span.YLeft)
{
CheckRange(yl, span.YLeft, span.X - 1, ParentDirectionsY.X2);
}
if (span.YRight != yr)
{
CheckRange(span.YRight, yr, span.X - 1, ParentDirectionsY.X2);
}
}
continue;
}
if (span.ParentDirection == ParentDirectionsY.Non)
{
if (span.X + 1 < bmp.width)
{
CheckRange(yl, yr, span.X + 1, ParentDirectionsY.X0);
}
if (span.X - 1 >= 0)
{
CheckRange(yl, yr, span.X - 1, ParentDirectionsY.X2);
}
continue;
}
throw new Exception();
}
#endregion
#region LeftRequired
if (span.Extended == ExtendTypesY.LeftRequired)
{
int yl = FindYLeft(span.YLeft, span.X);
if (span.ParentDirection == ParentDirectionsY.X2)
{
if (span.X - 1 >= 0)
{
CheckRange(yl, span.YRight, span.X - 1, ParentDirectionsY.X2);
}
if (span.X + 1 < bmp.width && yl != span.YLeft)
{
CheckRange(yl, span.YLeft, span.X + 1, ParentDirectionsY.X0);
}
continue;
}
if (span.ParentDirection == ParentDirectionsY.X0)
{
if (span.X + 1 < bmp.width)
{
CheckRange(yl, span.YRight, span.X + 1, ParentDirectionsY.X0);
}
if (span.X - 1 >= 0 && yl != span.YLeft)
{
CheckRange(yl, span.YLeft, span.X - 1, ParentDirectionsY.X2);
}
continue;
}
throw new Exception();
}
#endregion
#region RightRequired
if (span.Extended == ExtendTypesY.RightRequired)
{
int yr = FindYRight(span.YRight, span.X);
if (span.ParentDirection == ParentDirectionsY.X2)
{
if (span.X - 1 >= 0)
{
CheckRange(span.YLeft, yr, span.X - 1, ParentDirectionsY.X2);
}
if (span.X + 1 < bmp.width && span.YRight != yr)
{
CheckRange(span.YRight, yr, span.X + 1, ParentDirectionsY.X0);
}
continue;
}
if (span.ParentDirection == ParentDirectionsY.X0)
{
if (span.X + 1 < bmp.width)
{
CheckRange(span.YLeft, yr, span.X + 1, ParentDirectionsY.X0);
}
if (span.X - 1 >= 0 && span.YRight != yr)
{
CheckRange(span.YRight, yr, span.X - 1, ParentDirectionsY.X2);
}
continue;
}
throw new Exception();
}
#endregion
}
}
protected Container <Span> container;//以Span为单位的Queue或Stack容器
protected virtual void ExcuteSpanFill(BitMap2d data, Int16Double seed)
{
this.bmp = data;
data.ResetVisitCount();
flagsMap = new FlagMap2d(data.width, data.height);
Process(seed);
flagsMap.SetFlagOn(seed.X, seed.Y, true);
Span seedspan = new Span();
seedspan.XLeft = seed.X;
seedspan.XRight = seed.X;
seedspan.Y = seed.Y;
seedspan.ParentDirection = ParentDirections.Non;
seedspan.Extended = ExtendTypes.UnRez;
container.Push(seedspan);
while (!container.Empty())
{
Span span = container.Pop();
#region AllRez
if (span.Extended == ExtendTypes.AllRez)
{
if (span.ParentDirection == ParentDirections.Y2)
{
if (span.Y - 1 >= 0)
{
CheckRange(span.XLeft, span.XRight, span.Y - 1, ParentDirections.Y2);
}
continue;
}
if (span.ParentDirection == ParentDirections.Y0)
{
if (span.Y + 1 < bmp.height)
{
CheckRange(span.XLeft, span.XRight, span.Y + 1, ParentDirections.Y0);
}
continue;
}
throw new Exception();
}
#endregion
#region UnRez
if (span.Extended == ExtendTypes.UnRez)
{
int xl = FindXLeft(span.XLeft, span.Y);
int xr = FindXRight(span.XRight, span.Y);
if (span.ParentDirection == ParentDirections.Y2)
{
if (span.Y - 1 >= 0)
{
CheckRange(xl, xr, span.Y - 1, ParentDirections.Y2);
}
if (span.Y + 1 < bmp.height)
{
if (xl != span.XLeft)
{
CheckRange(xl, span.XLeft, span.Y + 1, ParentDirections.Y0);
}
if (span.XRight != xr)
{
CheckRange(span.XRight, xr, span.Y + 1, ParentDirections.Y0);
}
}
continue;
}
if (span.ParentDirection == ParentDirections.Y0)
{
if (span.Y + 1 < bmp.height)
{
CheckRange(xl, xr, span.Y + 1, ParentDirections.Y0);
}
if (span.Y - 1 >= 0)
{
if (xl != span.XLeft)
{
CheckRange(xl, span.XLeft, span.Y - 1, ParentDirections.Y2);
}
if (span.XRight != xr)
{
CheckRange(span.XRight, xr, span.Y - 1, ParentDirections.Y2);
}
}
continue;
}
if (span.ParentDirection == ParentDirections.Non)
{
if (span.Y + 1 < bmp.height)
{
CheckRange(xl, xr, span.Y + 1, ParentDirections.Y0);
}
if (span.Y - 1 >= 0)
{
CheckRange(xl, xr, span.Y - 1, ParentDirections.Y2);
}
continue;
}
throw new Exception();
}
#endregion
#region LeftRequired
if (span.Extended == ExtendTypes.LeftRequired)
{
int xl = FindXLeft(span.XLeft, span.Y);
if (span.ParentDirection == ParentDirections.Y2)
{
if (span.Y - 1 >= 0)
{
CheckRange(xl, span.XRight, span.Y - 1, ParentDirections.Y2);
}
if (span.Y + 1 < bmp.height && xl != span.XLeft)
{
CheckRange(xl, span.XLeft, span.Y + 1, ParentDirections.Y0);
}
continue;
}
if (span.ParentDirection == ParentDirections.Y0)
{
if (span.Y + 1 < bmp.height)
{
CheckRange(xl, span.XRight, span.Y + 1, ParentDirections.Y0);
}
if (span.Y - 1 >= 0 && xl != span.XLeft)
{
CheckRange(xl, span.XLeft, span.Y - 1, ParentDirections.Y2);
}
continue;
}
throw new Exception();
}
#endregion
#region RightRequired
if (span.Extended == ExtendTypes.RightRequired)
{
int xr = FindXRight(span.XRight, span.Y);
if (span.ParentDirection == ParentDirections.Y2)
{
if (span.Y - 1 >= 0)
{
CheckRange(span.XLeft, xr, span.Y - 1, ParentDirections.Y2);
}
if (span.Y + 1 < bmp.height && span.XRight != xr)
{
CheckRange(span.XRight, xr, span.Y + 1, ParentDirections.Y0);
}
continue;
}
if (span.ParentDirection == ParentDirections.Y0)
{
if (span.Y + 1 < bmp.height)
{
CheckRange(span.XLeft, xr, span.Y + 1, ParentDirections.Y0);
}
if (span.Y - 1 >= 0 && span.XRight != xr)
{
CheckRange(span.XRight, xr, span.Y - 1, ParentDirections.Y2);
}
continue;
}
throw new Exception();
}
#endregion
}
}