private void AddArc(ref ReadOnlySpan <char> span, bool relative)
{
var size = ReadSize(ref span);
span = ReadSeparator(span);
var rotationAngle = ReadDouble(ref span);
span = ReadSeparator(span);
var isLargeArc = ReadBool(ref span);
span = ReadSeparator(span);
// Uno specific: CounterClockwise → Counterclockwise
var sweepDirection = ReadBool(ref span) ? SweepDirection.Clockwise : SweepDirection.Counterclockwise;
span = ReadSeparator(span);
var end = relative
? ReadRelativePoint(ref span, _currentPoint)
: ReadPoint(ref span);
if (!_isOpen)
{
CreateFigure();
}
_geometryContext.ArcTo(end, size, rotationAngle, isLargeArc, sweepDirection, true, false); // Uno specific: Extra arguments.
_currentPoint = end;
_previousControlPoint = null;
}
/// <summary>
/// Parses the specified markup string.
/// </summary>
/// <param name="s">The markup string.</param>
public void Parse(string s, ref FillRule fillRule)
{
bool openFigure = false;
using (StringReader reader = new StringReader(s))
{
Command command = Command.None;
Point point = new Point();
bool relative = false;
Point? previousControlPoint = null;
while (ReadCommand(reader, ref command, ref relative))
{
switch (command)
{
case Command.FillRule:
fillRule = ReadFillRule(reader);
//_context.SetFillRule(ReadFillRule(reader));
previousControlPoint = null;
break;
case Command.Move:
if (openFigure)
{
_context.SetClosedState(false);
}
point = ReadPoint(reader, point, relative);
_context.BeginFigure(point, true, false);
openFigure = true;
previousControlPoint = null;
break;
case Command.Line:
point = ReadPoint(reader, point, relative);
_context.LineTo(point, true, false);
previousControlPoint = null;
break;
case Command.HorizontalLine:
if (!relative)
{
point = new Point(ReadDouble(reader), point.Y);
}
else
{
point = new Point(point.X + ReadDouble(reader), point.Y);
}
_context.LineTo(point, true, false);
previousControlPoint = null;
break;
case Command.VerticalLine:
if (!relative)
{
point = new Point(point.X, ReadDouble(reader));
}
else
{
point = new Point(point.X, point.Y + ReadDouble(reader));
}
_context.LineTo(point, true, false);
previousControlPoint = null;
break;
case Command.QuadraticBezierCurve:
{
Point handle = ReadPoint(reader, point, relative);
previousControlPoint = handle;
ReadSeparator(reader);
point = ReadPoint(reader, point, relative);
_context.QuadraticBezierTo(handle, point, true, false);
break;
}
case Command.SmoothQuadraticBezierCurve:
{
Point end = ReadPoint(reader, point, relative);
if (previousControlPoint != null)
{
previousControlPoint = MirrorControlPoint((Point)previousControlPoint, point);
}
_context.QuadraticBezierTo(previousControlPoint ?? point, end, true, false);
point = end;
break;
}
case Command.CubicBezierCurve:
{
Point point1 = ReadPoint(reader, point, relative);
ReadSeparator(reader);
Point point2 = ReadPoint(reader, point, relative);
previousControlPoint = point2;
ReadSeparator(reader);
point = ReadPoint(reader, point, relative);
_context.BezierTo(point1, point2, point, true, false);
break;
}
case Command.SmoothCubicBezierCurve:
{
Point point2 = ReadPoint(reader, point, relative);
ReadSeparator(reader);
Point end = ReadPoint(reader, point, relative);
if (previousControlPoint != null)
{
previousControlPoint = MirrorControlPoint((Point)previousControlPoint, point);
}
_context.BezierTo(previousControlPoint ?? point, point2, end, true, false);
previousControlPoint = point2;
point = end;
break;
}
case Command.Arc:
{
Size size = ReadSize(reader);
ReadSeparator(reader);
double rotationAngle = ReadDouble(reader);
ReadSeparator(reader);
bool isLargeArc = ReadBool(reader);
ReadSeparator(reader);
SweepDirection sweepDirection = ReadBool(reader) ? SweepDirection.Clockwise : SweepDirection.Counterclockwise;
ReadSeparator(reader);
point = ReadPoint(reader, point, relative);
_context.ArcTo(point, size, rotationAngle, isLargeArc, sweepDirection, true, false);
previousControlPoint = null;
break;
}
case Command.Close:
_context.SetClosedState(true);
openFigure = false;
previousControlPoint = null;
break;
default:
throw new NotSupportedException("Unsupported command");
}
}
if (openFigure)
{
_context.SetClosedState(false);
}
}
}