public override void DrawEllipse(double cx, double cy, double aradius, double bradius, double tilt)
{
if (thinlinemode != ThinLineModeFlag.OwnThinLines)
{
base.DrawEllipse(cx, cy, aradius, bradius, tilt);
return;
}
/*stipplebit = 0x8000;
*
* int px = 0, py = 0, nx, ny;
* bool first = true;
*
* GeomUtil.FlattenEllipse(cx, cy, aradius, bradius, tilt, flattentol, true, (x, y, moveto) =>
* {
* nx = GFXUtil.RealToInt(x);
* ny = GFXUtil.RealToInt(y);
* if (!first)
* Line_Internal(px, py, nx, ny, true); //TODO: can we skip last pixel except on last segment?
* else
* first = false;
* px = nx;
* py = ny;
* });*/
int px = 0, py = 0, nx, ny;
int num = Clipper.ClipEllipse(cx, cy, aradius, bradius, tilt, clipbuffer, clipMinX, clipMinY, clipMaxX, clipMaxY);
if (num == 1)
{ //entire arc visible
stipplebit = 0x8000;
GeomUtil.FlattenEllipse(cx, cy, aradius, bradius, tilt, flattentol, true, (x, y, moveto) =>
{
nx = GFXUtil.FloatToInt(x);
ny = GFXUtil.FloatToInt(y);
if (!moveto)
{
Line_Internal(px, py, nx, ny, true); //TODO: can we skip last pixel except on last segment?
}
px = nx;
py = ny;
});
}
else
{ //arc is clipped (or possibly invisble when nnum==0)
for (int l = 0; l < num; l += 2)
{
stipplebit = 0x8000;
GeomUtil.FlattenEllipticArc(cx, cy, aradius, bradius, tilt, clipbuffer[l], clipbuffer[l + 1] - clipbuffer[l], flattentol, true, (x, y, moveto) =>
{
nx = GFXUtil.FloatToInt(x);
ny = GFXUtil.FloatToInt(y);
if (!moveto)
{
Line_Internal(px, py, nx, ny, true);
}
px = nx;
py = ny;
});
}
}
}