public override void Pie(int xc, int yc, int x1, int y1, int x2, int y2)
{
int r = ((SubPixelWidth + LineAA.SUBPIXEL_MARK) >> LineAA.SUBPIXEL_SHIFT);
if (r < 1)
{
r = 1;
}
EllipseBresenhamInterpolator ei = new EllipseBresenhamInterpolator(r, r);
int dx = 0;
int dy = -r;
int dy0 = dy;
int dx0 = dx;
int x = xc >> LineAA.SUBPIXEL_SHIFT;
int y = yc >> LineAA.SUBPIXEL_SHIFT;
do
{
dx += ei.Dx;
dy += ei.Dy;
if (dy != dy0)
{
PineHLine(xc, yc, x1, y1, x2, y2, x - dx0, y + dy0, x + dx0);
PineHLine(xc, yc, x1, y1, x2, y2, x - dx0, y - dy0, x + dx0);
}
dx0 = dx;
dy0 = dy;
ei.Next();
}while (dy < 0);
PineHLine(xc, yc, x1, y1, x2, y2, x - dx0, y + dy0, x + dx0);
}
public override void SemiDot(CompareFunction cmp, int xc1, int yc1, int xc2, int yc2)
{
if (doClipping && ClipLiangBarsky.Flags(xc1, yc1, clippingRectangle) != 0)
{
return;
}
int r = ((SubPixelWidth + LineAA.SUBPIXEL_MARK) >> LineAA.SUBPIXEL_SHIFT);
if (r < 1)
{
r = 1;
}
EllipseBresenhamInterpolator ei = new EllipseBresenhamInterpolator(r, r);
int dx = 0;
int dy = -r;
int dy0 = dy;
int dx0 = dx;
int x = xc1 >> LineAA.SUBPIXEL_SHIFT;
int y = yc1 >> LineAA.SUBPIXEL_SHIFT;
do
{
dx += ei.Dx;
dy += ei.Dy;
if (dy != dy0)
{
SemiDotHLine(cmp, xc1, yc1, xc2, yc2, x - dx0, y + dy0, x + dx0);
SemiDotHLine(cmp, xc1, yc1, xc2, yc2, x - dx0, y - dy0, x + dx0);
}
dx0 = dx;
dy0 = dy;
ei.Next();
}while (dy < 0);
SemiDotHLine(cmp, xc1, yc1, xc2, yc2, x - dx0, y + dy0, x + dx0);
}