public override void SemiDotHLine(CompareFunction cmp,
int xc1, int yc1, int xc2, int yc2,
int x1, int y1, int x2)
{
byte[] covers = new byte[MAX_HALF_WIDTH * 2 + 4];
int offset0 = 0;
int offset1 = 0;
int x = x1 << LineAA.SUBPIXEL_SHIFT;
int y = y1 << LineAA.SUBPIXEL_SHIFT;
int w = SubPixelWidth;
DistanceInterpolator0 di = new DistanceInterpolator0(xc1, yc1, xc2, yc2, x, y);
x += LineAA.SUBPIXEL_SCALE / 2;
y += LineAA.SUBPIXEL_SCALE / 2;
int x0 = x1;
int dx = x - xc1;
int dy = y - yc1;
do
{
int d = (int)(AggMath.fast_sqrt(dx * dx + dy * dy));
covers[offset1] = 0;
if (cmp(di.Distance) && d <= w)
{
covers[offset1] = (byte)GetCover(d);
}
++offset1;
dx += LineAA.SUBPIXEL_SCALE;
di.IncX();
}while (++x1 <= x2);
destImageSurface.BlendSolidHSpan(x0, y1,
offset1 - offset0,
Color, covers,
offset0);
}
public override void SemiDotHLine(CompareFunction cmp,
int xc1, int yc1, int xc2, int yc2,
int x1, int y1, int x2)
{
byte[] covers = new byte[MAX_HALF_WIDTH * 2 + 4];
int offset0 = 0;
int offset1 = 0;
int x = x1 << LineAA.SUBPIXEL_SHIFT;
int y = y1 << LineAA.SUBPIXEL_SHIFT;
int w = SubPixelWidth;
DistanceInterpolator0 di = new DistanceInterpolator0(xc1, yc1, xc2, yc2, x, y);
x += LineAA.SUBPIXEL_SCALE / 2;
y += LineAA.SUBPIXEL_SCALE / 2;
int x0 = x1;
int dx = x - xc1;
int dy = y - yc1;
do
{
int d = (int)(AggMath.fast_sqrt(dx * dx + dy * dy));
covers[offset1] = 0;
if (cmp(di.Distance) && d <= w)
{
covers[offset1] = (byte)GetCover(d);
}
++offset1;
dx += LineAA.SUBPIXEL_SCALE;
di.IncX();
}
while (++x1 <= x2);
destImageSurface.BlendSolidHSpan(x0, y1,
offset1 - offset0,
Color, covers,
offset0);
}