public override void Line0(LineParameters lp)
{
if (doClipping)
{
int x1 = lp.x1;
int y1 = lp.y1;
int x2 = lp.x2;
int y2 = lp.y2;
int flags = ClipLiangBarsky.ClipLineSegment(ref x1, ref y1, ref x2, ref y2, clippingRectangle);
if ((flags & 4) == 0)
{
if (flags != 0)
{
LineParameters lp2 = new LineParameters(x1, y1, x2, y2,
AggBasics.uround(AggMath.calc_distance(x1, y1, x2, y2)));
Line0NoClip(lp2);
}
else
{
Line0NoClip(lp);
}
}
}
else
{
Line0NoClip(lp);
}
}
public override void Line3(LineParameters lp,
int sx, int sy, int ex, int ey)
{
if (doClipping)
{
int x1 = lp.x1;
int y1 = lp.y1;
int x2 = lp.x2;
int y2 = lp.y2;
int flags = ClipLiangBarsky.ClipLineSegment(ref x1, ref y1, ref x2, ref y2, clippingRectangle);
if ((flags & 4) == 0)
{
if (flags != 0)
{
LineParameters lp2 = new LineParameters(x1, y1, x2, y2,
AggBasics.uround(AggMath.calc_distance(x1, y1, x2, y2)));
if ((flags & 1) != 0)
{
sx = x1 + (y2 - y1);
sy = y1 - (x2 - x1);
}
else
{
while (Math.Abs(sx - lp.x1) + Math.Abs(sy - lp.y1) > lp2.len)
{
sx = (lp.x1 + sx) >> 1;
sy = (lp.y1 + sy) >> 1;
}
}
if ((flags & 2) != 0)
{
ex = x2 + (y2 - y1);
ey = y2 - (x2 - x1);
}
else
{
while (Math.Abs(ex - lp.x2) + Math.Abs(ey - lp.y2) > lp2.len)
{
ex = (lp.x2 + ex) >> 1;
ey = (lp.y2 + ey) >> 1;
}
}
Line3NoClip(lp2, sx, sy, ex, ey);
}
else
{
Line3NoClip(lp, sx, sy, ex, ey);
}
}
}
else
{
Line3NoClip(lp, sx, sy, ex, ey);
}
}