public override Region CreateComplement(Region another)
{
CpuBlitRegion rgnB = another as CpuBlitRegion;
if (rgnB == null)
{
return(null);
}
//
//
switch (rgnB.Kind)
{
default: throw new System.NotSupportedException();
case CpuBlitRegionKind.BitmapBasedRegion:
{
//TODO: review here
BitmapBasedRegion bmpRgn = (BitmapBasedRegion)rgnB;
}
break;
case CpuBlitRegionKind.MixedRegion:
break;
case CpuBlitRegionKind.VxsRegion:
//TODO: review complement
break;
}
return(null);
}
BitmapBasedRegion CreateNewRegion(BitmapBasedRegion another, SetOperationName opName)
{
//
MemBitmap myBmp = this.GetRegionBitmap(); //or create new as need
MemBitmap anotherBmp = another.GetRegionBitmap();
//do bitmap union
//2 rgn merge may
Rectangle r1Rect = this.GetRectBounds();
Rectangle r2Rect = another.GetRectBounds();
Rectangle r3Rect = Rectangle.Union(r1Rect, r2Rect);
//
MemBitmap r3Bmp = new MemBitmap(r3Rect.Width, r3Rect.Height);
r3Bmp.Clear(Color.Black);
MaskBitmapReader r1 = new MaskBitmapReader();
r1.SetBitmap(myBmp);
MaskBitmapReader r2 = new MaskBitmapReader();
r2.SetBitmap(anotherBmp);
MaskBitmapWriter w3 = new MaskBitmapWriter();
w3.SetBitmap(r3Bmp);
int height = r3Rect.Height;
int width = r3Rect.Width;
switch (opName)
{
case SetOperationName.Union:
for (int y = 0; y < height; ++y)
{
r1.MoveTo(0, y);
r2.MoveTo(0, y);
w3.MoveTo(0, y);
for (int x = 0; x < width; ++x)
{
w3.Union(r1.Read(), r2.Read());
r1.MoveRight();
r2.MoveRight();
w3.MoveRight();
}
}
break;
case SetOperationName.Intersect:
for (int y = 0; y < height; ++y)
{
r1.MoveTo(0, y);
r2.MoveTo(0, y);
w3.MoveTo(0, y);
for (int x = 0; x < width; ++x)
{
w3.Intersect(r1.Read(), r2.Read());
r1.MoveRight();
r2.MoveRight();
w3.MoveRight();
}
}
break;
case SetOperationName.Diff:
for (int y = 0; y < height; ++y)
{
r1.MoveTo(0, y);
r2.MoveTo(0, y);
w3.MoveTo(0, y);
for (int x = 0; x < width; ++x)
{
w3.Diff(r1.Read(), r2.Read());
r1.MoveRight();
r2.MoveRight();
w3.MoveRight();
}
}
break;
case SetOperationName.Xor:
for (int y = 0; y < height; ++y)
{
r1.MoveTo(0, y);
r2.MoveTo(0, y);
w3.MoveTo(0, y);
for (int x = 0; x < width; ++x)
{
w3.Xor(r1.Read(), r2.Read());
r1.MoveRight();
r2.MoveRight();
w3.MoveRight();
}
}
break;
}
return(new BitmapBasedRegion(r3Bmp));
}