public void Fill(RectangleC rect)
{
if (rect.Width > 0)
{
int initialWord = (int)((uint)rect.Left >> WordShift);
int finalWord = (rect.Right - 1) >> WordShift;
int initialShift = (int)((uint)rect.Left & WordMask);
int finalShift = 32 - (int)((uint)rect.Right & WordMask);
for (int xw = initialWord; xw <= finalWord; ++xw)
{
uint mask = ~0u;
if (xw == initialWord && initialShift != 0)
{
mask = mask << initialShift;
}
if (xw == finalWord && finalShift != WordSize)
{
mask = (mask << finalShift) >> finalShift;
}
for (int y = rect.Bottom; y < rect.Top; ++y)
{
Map[y, xw] |= mask;
}
}
}
}
void Combine(BinaryMap source, RectangleC area, Point at, CombineFunction function)
{
int shift = (int)((uint)area.X & WordMask) - (int)((uint)at.X & WordMask);
int vectorSize = (area.Width >> WordShift) + 2;
Parallel.For(0, area.Height,
() => new CombineLocals {
Vector = new uint[vectorSize], SrcVector = new uint[vectorSize]
},
delegate(int y, ParallelLoopState state, CombineLocals locals)
{
LoadLine(locals.Vector, new Point(at.X, at.Y + y), area.Width);
source.LoadLine(locals.SrcVector, new Point(area.X, area.Y + y), area.Width);
if (shift >= 0)
{
ShiftLeft(locals.SrcVector, shift);
}
else
{
ShiftRight(locals.SrcVector, -shift);
}
function(locals.Vector, locals.SrcVector);
SaveLine(locals.Vector, new Point(at.X, at.Y + y), area.Width);
return(locals);
}, locals => { });
}
public RectangleC(RectangleC other)
{
X = other.X;
Y = other.Y;
Width = other.Width;
Height = other.Height;
}
public RectangleC GetShifted(Point relative)
{
RectangleC result = new RectangleC(this);
result.Shift(relative);
return(result);
}
public void AndNot(BinaryMap source, RectangleC area, Point at)
{
Combine(source, area, at, delegate(uint[] target, uint[] srcVector)
{
for (int i = 0; i < target.Length; ++i)
{
target[i] &= ~srcVector[i];
}
});
}
public BlockMap(Size pixelSize, int maxBlockSize)
{
PixelCount = pixelSize;
BlockCount = new Size(
Calc.DivRoundUp(PixelCount.Width, maxBlockSize),
Calc.DivRoundUp(PixelCount.Height, maxBlockSize));
CornerCount = BlockToCornerCount(BlockCount);
AllBlocks = new RectangleC(BlockCount);
AllCorners = new RectangleC(CornerCount);
Corners = InitCorners();
BlockAreas = new RectangleGrid(Corners);
BlockCenters = InitBlockCenters();
CornerAreas = InitCornerAreas();
}
public void Clip(RectangleC other)
{
if (Left < other.Left)
{
Left = other.Left;
}
if (Right > other.Right)
{
Right = other.Right;
}
if (Bottom < other.Bottom)
{
Bottom = other.Bottom;
}
if (Top > other.Top)
{
Top = other.Top;
}
}
public void Copy(BinaryMap source, RectangleC area, Point at)
{
int shift = (int)((uint)area.X & WordMask) - (int)((uint)at.X & WordMask);
Parallel.For(0, area.Height,
() => new uint[(area.Width >> WordShift) + 2],
delegate(int y, ParallelLoopState state, uint[] vector)
{
source.LoadLine(vector, new Point(area.X, area.Y + y), area.Width);
if (shift >= 0)
{
ShiftLeft(vector, shift);
}
else
{
ShiftRight(vector, -shift);
}
SaveLine(vector, new Point(at.X, at.Y + y), area.Width);
return(vector);
}, vector => { });
}
