unsafe void CustomBlendPixel32(int *dstPtr, Color srcColor)
{
if (FillMode == BlenderFillMode.Force)
{
*dstPtr = srcColor.ToARGB();
return;
}
//-------------------------------------------------------------
int srcColorABGR = (int)srcColor.ToABGR();
int existingColor = *dstPtr;
//int existing_R = (existingColor >> CO.R_SHIFT) & 0xFF;
int existing_G = (existingColor >> PixelFarm.Drawing.Internal.CO.G_SHIFT) & 0xFF;
//int existing_B = (existingColor >> CO.B_SHIFT) & 0xFF;
if (FillMode == BlenderFillMode.InnerAreaX)
{
if (existing_G == EdgeBmpLut.BORDER_OUTSIDE || existing_G == EdgeBmpLut.BORDER_OVERLAP_OUTSIDE)
{
*dstPtr = srcColor.ToARGB();
}
return;
}
if (existingColor == BLACK)
{
*dstPtr = srcColor.ToARGB();
return;
}
if (existingColor == _areaInside100)
{
*dstPtr = srcColor.ToARGB();
return;
}
if (srcColorABGR == existingColor)
{
return;
}
if (FillMode == BlenderFillMode.InnerArea50)
{
*dstPtr = srcColor.ToARGB();
return;
}
//-------------------------------------------------------------
//decode edge information
//we use 2 bytes for encode edge number
ushort existingEdgeNo = EdgeBmpLut.DecodeEdgeFromColor(existingColor, out AreaKind existingAreaKind);
ushort newEdgeNo = EdgeBmpLut.DecodeEdgeFromColor(srcColor, out AreaKind newEdgeAreaKind);
if (newEdgeAreaKind == AreaKind.OverlapInside || newEdgeAreaKind == AreaKind.OverlapOutside)
{
//new color is overlap color
if (existingAreaKind == AreaKind.OverlapInside || existingAreaKind == AreaKind.OverlapOutside)
{
CornerList registerList = _overlapList[newEdgeNo];
_overlapList[existingEdgeNo].Append(registerList);
}
else
{
CornerList registerList = _overlapList[newEdgeNo];
registerList.Append(existingEdgeNo);
*dstPtr = EdgeBmpLut.EncodeToColor(newEdgeNo, (existing_G == EdgeBmpLut.BORDER_INSIDE) ? AreaKind.OverlapInside : AreaKind.OverlapOutside).ToARGB();
}
}
else
{
if (existingAreaKind == AreaKind.OverlapInside ||
existingAreaKind == AreaKind.OverlapOutside)
{
_overlapList[existingEdgeNo].Append(newEdgeNo);
}
else
{
OverlapPart overlapPart;
AreaKind areaKind;
if (existingAreaKind == AreaKind.BorderInside || existingAreaKind == AreaKind.AreaInsideCoverage100)
{
if (newEdgeAreaKind == AreaKind.BorderInside)
{
areaKind = AreaKind.OverlapInside;
overlapPart = new OverlapPart(
existingEdgeNo, (existing_G == EdgeBmpLut.BORDER_INSIDE) ? AreaKind.OverlapInside : AreaKind.OverlapOutside,
newEdgeNo, (srcColor.G == EdgeBmpLut.BORDER_INSIDE) ? AreaKind.OverlapInside : AreaKind.OverlapOutside);
}
else
{
areaKind = AreaKind.OverlapInside;
overlapPart = new OverlapPart(
existingEdgeNo, (existing_G == EdgeBmpLut.BORDER_INSIDE) ? AreaKind.OverlapInside : AreaKind.OverlapOutside,
newEdgeNo, (existing_G == EdgeBmpLut.BORDER_INSIDE) ? AreaKind.OverlapInside : AreaKind.OverlapOutside);
}
}
else
{
//existing is outside
if (newEdgeAreaKind == AreaKind.BorderInside)
{
areaKind = AreaKind.OverlapInside;
overlapPart = new OverlapPart(
existingEdgeNo, (existing_G == EdgeBmpLut.BORDER_INSIDE) ? AreaKind.OverlapInside : AreaKind.OverlapOutside,
newEdgeNo, (existing_G == EdgeBmpLut.BORDER_INSIDE) ? AreaKind.OverlapInside : AreaKind.OverlapOutside);
}
else
{
areaKind = AreaKind.OverlapOutside;
overlapPart = new OverlapPart(
existingEdgeNo, (existing_G == EdgeBmpLut.BORDER_INSIDE) ? AreaKind.OverlapInside : AreaKind.OverlapOutside,
newEdgeNo, (srcColor.G == EdgeBmpLut.BORDER_INSIDE) ? AreaKind.OverlapInside : AreaKind.OverlapOutside);
}
}
if (!_overlapParts.TryGetValue(overlapPart, out ushort found))
{
if (_overlapList.Count >= ushort.MaxValue)
{
throw new NotSupportedException();
}
//
ushort newPartNo = (ushort)_overlapList.Count;
_overlapParts.Add(overlapPart, newPartNo);
//
CornerList cornerList = new CornerList();
#if DEBUG
if (_overlapList.Count >= 388)
{
}
#endif
_overlapList.Add(cornerList);
cornerList.Append(existingEdgeNo);
cornerList.Append(newEdgeNo);
//set new color
*dstPtr = EdgeBmpLut.EncodeToColor(newPartNo, areaKind).ToARGB();
}
else
{
//set new color
*dstPtr = EdgeBmpLut.EncodeToColor(found, areaKind).ToARGB();
}
}
}
}
