private static void DefineRectangle(StreamGeometryContext context, Thickness th, CornerRadiusExt r, double w, double h)
{
context.BeginFigure(new Point(th.Left, th.Top + r.TopLeftLeft), true, true);
context.QuadraticBezierTo(new Point(th.Left, th.Top), new Point(th.Left + r.TopLeftTop, th.Top), false, false);
context.LineTo(new Point(w - th.Right - r.TopRightTop, th.Top), false, false);
context.QuadraticBezierTo(new Point(w - th.Right, th.Top), new Point(w - th.Right, th.Top + r.TopRightRight), false, false);
context.LineTo(new Point(w - th.Right, h - th.Bottom - r.BottomRightRight), false, false);
context.QuadraticBezierTo(new Point(w - th.Right, h - th.Bottom), new Point(w - th.Right - r.BottomRightBottom, h - th.Bottom), false, false);
context.LineTo(new Point(th.Left + r.BottomLeftBottom, h - th.Bottom), false, false);
context.QuadraticBezierTo(new Point(th.Left, h - th.Bottom), new Point(th.Left, h - th.Bottom - r.BottomLeftLeft), false, false);
}
private void drawLine(Point p1, Point p2)
{
List <Point> controlPoints = BezierHelper.getControlPoints(0.4, p1, p2);
if (isHaveLastControlPoint == false)
{
lastControlPoint = p1;
isHaveLastControlPoint = true;
}
//先画bezier，再画直线
// QuadraticBezierSegment bezierSegment = new QuadraticBezierSegment(p1, controlPoints[0], true);
//
// lastControlPoint = controlPoints[1];
// pathFigure.Segments.Add(bezierSegment);
// LineSegment lineSegment = new LineSegment(controlPoints[1], true);
// pathFigure.Segments.Add(lineSegment);
StreamGeometry streamGeometry = new StreamGeometry();
using (StreamGeometryContext ctx = streamGeometry.Open())
{
ctx.BeginFigure(lastControlPoint, false, false);
ctx.QuadraticBezierTo(p1, controlPoints[0], true, true);
ctx.LineTo(controlPoints[1], true, true);
}
lastControlPoint = controlPoints[1];
geometryGroup.Children.Add(streamGeometry);
}
public override void Draw(DrawingContext ctx, Matrix matrix)
{
if (!this.IsValid)
{
return;
}
PathFigureEditor pathFigureEditor = new PathFigureEditor(this.PathGeometry.Figures[this.FigureIndex]);
StreamGeometry streamGeometry = new StreamGeometry();
StreamGeometryContext streamGeometryContext = streamGeometry.Open();
switch (this.PathPointKind)
{
case PathPointKind.Start:
throw new InvalidOperationException(ExceptionStringTable.PathSegmentAdornerIsolatedPointSegment);
case PathPointKind.Arc:
ArcSegment arcSegment = (ArcSegment)pathFigureEditor.PathFigure.Segments[this.SegmentIndex];
streamGeometryContext.BeginFigure(this.GetPoint(pathFigureEditor, -1), false, false);
streamGeometryContext.ArcTo(arcSegment.Point, arcSegment.Size, arcSegment.RotationAngle, arcSegment.IsLargeArc, arcSegment.SweepDirection, true, false);
break;
case PathPointKind.Line:
streamGeometryContext.BeginFigure(this.GetPoint(pathFigureEditor, -1), false, false);
streamGeometryContext.LineTo(this.GetPoint(pathFigureEditor, 0), true, false);
break;
case PathPointKind.Quadratic:
streamGeometryContext.BeginFigure(this.GetPoint(pathFigureEditor, -2), false, false);
streamGeometryContext.QuadraticBezierTo(this.GetPoint(pathFigureEditor, -1), this.GetPoint(pathFigureEditor, 0), true, false);
break;
case PathPointKind.Cubic:
streamGeometryContext.BeginFigure(this.GetPoint(pathFigureEditor, -3), false, false);
streamGeometryContext.BezierTo(this.GetPoint(pathFigureEditor, -2), this.GetPoint(pathFigureEditor, -1), this.GetPoint(pathFigureEditor, 0), true, false);
break;
case PathPointKind.BezierHandle:
throw new InvalidOperationException(ExceptionStringTable.PathSegmentAdornerLastPointIsBezier);
default:
throw new NotImplementedException(ExceptionStringTable.PathSegmentAdornerUnknownPathPoint);
}
streamGeometryContext.Close();
MatrixTransform matrixTransform = new MatrixTransform(matrix);
matrixTransform.Freeze();
streamGeometry.Transform = (Transform)matrixTransform;
streamGeometry.Freeze();
Pen pen = this.IsActive ? this.ThickPathSegmentPen : this.ThinPathSegmentPen;
ctx.DrawGeometry((Brush)null, pen, (System.Windows.Media.Geometry)streamGeometry);
ctx.DrawGeometry((Brush)null, PathSegmentAdorner.HitTestPen, (System.Windows.Media.Geometry)streamGeometry);
}
private static void DeserializeQuadraticBezierTo(BinaryReader br, byte firstByte, StreamGeometryContext sc)
{
Point point1;
Point point2 = new Point();
bool isStroked;
bool isSmoothJoin;
DeserializePointAndTwoBools(br, firstByte, out point1, out isStroked, out isSmoothJoin);
point2.X = XamlSerializationHelper.ReadDouble(br);
point2.Y = XamlSerializationHelper.ReadDouble(br);
sc.QuadraticBezierTo(point1, point2, isStroked, isSmoothJoin);
}
public static void DrawFigure(this StreamGeometryContext ctx, PathFigure figure)
{
ctx.BeginFigure(figure.StartPoint, figure.IsFilled, figure.IsClosed);
foreach (var segment in figure.Segments)
{
if (segment is LineSegment lineSegment)
{
ctx.LineTo(lineSegment.Point, lineSegment.IsStroked, lineSegment.IsSmoothJoin);
continue;
}
if (segment is BezierSegment bezierSegment)
{
ctx.BezierTo(bezierSegment.Point1, bezierSegment.Point2, bezierSegment.Point3, bezierSegment.IsStroked, bezierSegment.IsSmoothJoin);
continue;
}
if (segment is QuadraticBezierSegment quadraticSegment)
{
ctx.QuadraticBezierTo(quadraticSegment.Point1, quadraticSegment.Point2, quadraticSegment.IsStroked, quadraticSegment.IsSmoothJoin);
continue;
}
if (segment is PolyLineSegment polyLineSegment)
{
ctx.PolyLineTo(polyLineSegment.Points, polyLineSegment.IsStroked, polyLineSegment.IsSmoothJoin);
continue;
}
if (segment is PolyBezierSegment polyBezierSegment)
{
ctx.PolyBezierTo(polyBezierSegment.Points, polyBezierSegment.IsStroked, polyBezierSegment.IsSmoothJoin);
continue;
}
if (segment is PolyQuadraticBezierSegment polyQuadraticSegment)
{
ctx.PolyQuadraticBezierTo(polyQuadraticSegment.Points, polyQuadraticSegment.IsStroked, polyQuadraticSegment.IsSmoothJoin);
continue;
}
if (segment is ArcSegment arcSegment)
{
ctx.ArcTo(arcSegment.Point, arcSegment.Size, arcSegment.RotationAngle, arcSegment.IsLargeArc, arcSegment.SweepDirection, arcSegment.IsStroked, arcSegment.IsSmoothJoin);
continue;
}
}
}
public static void DrawFigure(StreamGeometryContext ctx, PathFigure figure)
{
ctx.BeginFigure(figure.StartPoint, figure.IsFilled, figure.IsClosed);
foreach (var segment in figure.Segments)
{
var lineSegment = segment as WpfLineSegment;
if (lineSegment != null)
{
ctx.LineTo(lineSegment.Point, lineSegment.IsStroked, lineSegment.IsSmoothJoin); continue;
}
var bezierSegment = segment as BezierSegment;
if (bezierSegment != null)
{
ctx.BezierTo(bezierSegment.Point1, bezierSegment.Point2, bezierSegment.Point3, bezierSegment.IsStroked, bezierSegment.IsSmoothJoin); continue;
}
var quadraticSegment = segment as QuadraticBezierSegment;
if (quadraticSegment != null)
{
ctx.QuadraticBezierTo(quadraticSegment.Point1, quadraticSegment.Point2, quadraticSegment.IsStroked, quadraticSegment.IsSmoothJoin); continue;
}
var polyLineSegment = segment as PolyLineSegment;
if (polyLineSegment != null)
{
ctx.PolyLineTo(polyLineSegment.Points, polyLineSegment.IsStroked, polyLineSegment.IsSmoothJoin); continue;
}
var polyBezierSegment = segment as PolyBezierSegment;
if (polyBezierSegment != null)
{
ctx.PolyBezierTo(polyBezierSegment.Points, polyBezierSegment.IsStroked, polyBezierSegment.IsSmoothJoin); continue;
}
var polyQuadraticSegment = segment as PolyQuadraticBezierSegment;
if (polyQuadraticSegment != null)
{
ctx.PolyQuadraticBezierTo(polyQuadraticSegment.Points, polyQuadraticSegment.IsStroked, polyQuadraticSegment.IsSmoothJoin); continue;
}
var arcSegment = segment as ArcSegment;
if (arcSegment != null)
{
ctx.ArcTo(arcSegment.Point, arcSegment.Size, arcSegment.RotationAngle, arcSegment.IsLargeArc, arcSegment.SweepDirection, arcSegment.IsStroked, arcSegment.IsSmoothJoin); continue;
}
}
}
/// <summary>
/// Generates a WPF geometry for a single graphic path geometry
/// </summary>
public static Geometry GenerateGeometry(GraphicPathGeometry graphicPathGeometry)
{
if (graphicPathGeometry == null)
{
return(null);
}
StreamGeometry geometry = new StreamGeometry();
geometry.FillRule = ConvertFillRule(graphicPathGeometry.FillRule);
StreamGeometryContext ctx = geometry.Open();
foreach (var segment in graphicPathGeometry.Segments)
{
switch (segment)
{
case GraphicMoveSegment graphicMove:
{
ctx.BeginFigure(graphicMove.StartPoint, true, graphicMove.IsClosed);
break;
}
case GraphicLineSegment graphicLineTo:
{
ctx.LineTo(graphicLineTo.To, true, true);
break;
}
case GraphicCubicBezierSegment graphicCubicBezier:
{
ctx.BezierTo(graphicCubicBezier.ControlPoint1, graphicCubicBezier.ControlPoint2, graphicCubicBezier.EndPoint, true, true);
break;
}
case GraphicQuadraticBezierSegment graphicQuadraticBezier:
{
ctx.QuadraticBezierTo(graphicQuadraticBezier.ControlPoint, graphicQuadraticBezier.EndPoint, true, true);
break;
}
}
}
ctx.Close();
geometry.Freeze();
return(geometry);
}
private void internalGeometryDraw(StreamGeometryContext context)
{
makeOrthogonalPoints();
context.BeginFigure(StartPoint, true, false);
foreach (FromTo fromTo in PointList)
{
if (fromTo.Intersection.Count > 0)
{
foreach (IntersectPoint interPoint in fromTo.Intersection)
{
switch (fromTo.DirSort)
{
case DirSort.X_ASC:
if (interPoint.Mode == IntersectPointMode.NormalIntersect)
{
context.LineTo(new Point(interPoint.Point.X - offset, interPoint.Point.Y), true, true);
context.QuadraticBezierTo(new Point(interPoint.Point.X, interPoint.Point.Y - offset), new Point(interPoint.Point.X + offset, interPoint.Point.Y), true, true);
}
else if (interPoint.Mode == IntersectPointMode.InnerIntersect)
{
context.LineTo(new Point(interPoint.Point.X - 2.5, interPoint.Point.Y), true, true);
context.QuadraticBezierTo(new Point(interPoint.Point.X, interPoint.Point.Y - 3.5), new Point(interPoint.Point.X + 2.5, interPoint.Point.Y), true, true);
context.QuadraticBezierTo(new Point(interPoint.Point.X, interPoint.Point.Y + 3.5), new Point(interPoint.Point.X - 2.5, interPoint.Point.Y), true, true);
}
break;
case DirSort.X_DESC:
if (interPoint.Mode == IntersectPointMode.NormalIntersect)
{
context.LineTo(new Point(interPoint.Point.X + offset, interPoint.Point.Y), true, true);
context.QuadraticBezierTo(new Point(interPoint.Point.X, interPoint.Point.Y - offset), new Point(interPoint.Point.X - offset, interPoint.Point.Y), true, true);
}
else if (interPoint.Mode == IntersectPointMode.InnerIntersect)
{
context.LineTo(new Point(interPoint.Point.X + 2.5, interPoint.Point.Y), true, true);
context.QuadraticBezierTo(new Point(interPoint.Point.X, interPoint.Point.Y - 3.5), new Point(interPoint.Point.X - 2.5, interPoint.Point.Y), true, true);
context.QuadraticBezierTo(new Point(interPoint.Point.X, interPoint.Point.Y + 3.5), new Point(interPoint.Point.X + 2.5, interPoint.Point.Y), true, true);
}
break;
}
}
context.LineTo(fromTo.To, true, true);
}
else
{
context.LineTo(fromTo.To, true, true);
}
}
}
public void DrawBezier(Point[] pts, DrawingContext dc, Brush brush)
{
foreach (Point pt in pts)//绘制点
{
dc.DrawEllipse(brush, null, pt, 5, 5);
}
StreamGeometry sg = new StreamGeometry();
StreamGeometryContext sgc = sg.Open();
sgc.BeginFigure(pts[0], true, false);
sgc.QuadraticBezierTo(pts[1], pts[2], true, true);
sgc.BeginFigure(pts[0], true, false);
sgc.PolyLineTo(pts, true, true);
sgc.Close();
Pen pen = new Pen(brush, 1);
dc.DrawGeometry(null, pen, sg);
}
public StreamGeometryQuadraticBezierToExample()
{
// Create a path to draw a geometry with.
Path myPath = new Path();
myPath.Stroke = Brushes.Black;
myPath.StrokeThickness = 1;
// Create a StreamGeometry to use to specify myPath.
StreamGeometry geometry = new StreamGeometry();
// Open a StreamGeometryContext that can be used to describe this StreamGeometry
// object's contents.
using (StreamGeometryContext ctx = geometry.Open())
{
// Set the begin point of the shape.
ctx.BeginFigure(new Point(10, 100), true /* is filled */, false /* is closed */);
// Create a Quadratic Bezier curve using the 2 specifed points. The first point
// specifies the control point while the second point specifies the end point
// of the curve.
ctx.QuadraticBezierTo(new Point(100, 0), new Point(200, 200), true /* is stroked */,
false /* is smooth join */);
}
// Freeze the geometry (make it unmodifiable)
// for additional performance benefits.
geometry.Freeze();
// specify the shape (quadratic Bezier curve) of the path using the StreamGeometry.
myPath.Data = geometry;
// Add path shape to the UI.
StackPanel mainPanel = new StackPanel();
mainPanel.Children.Add(myPath);
this.Content = mainPanel;
}
public static void Write(this StreamGeometryContext ctx, PathSegment pathSegment)
{
switch (pathSegment)
{
case ArcSegment arc:
ctx.ArcTo(arc.Point, arc.Size, arc.RotationAngle, arc.IsLargeArc, arc.SweepDirection, false, false);
break;
case BezierSegment bezier:
ctx.BezierTo(bezier.Point1, bezier.Point2, bezier.Point3, false, false);
break;
case PolyBezierSegment polyBezier:
ctx.PolyBezierTo(polyBezier.Points, false, false);
break;
case PolyLineSegment polyLine:
ctx.PolyLineTo(polyLine.Points, false, false);
break;
case QuadraticBezierSegment quadraticBezier:
ctx.QuadraticBezierTo(quadraticBezier.Point1, quadraticBezier.Point2, false, false);
break;
case PolyQuadraticBezierSegment polyQuadraticBezier:
ctx.PolyQuadraticBezierTo(polyQuadraticBezier.Points, false, false);
break;
case LineSegment line:
ctx.LineTo(line.Point, false, false);
break;
default:
break;
}
}
protected internal override void ApplyTo(StreamGeometryContext ctx)
{
ctx.QuadraticBezierTo(Point1, Point2);
}
public override void Curve3(float x1, float y1, float x2, float y2) => _context.QuadraticBezierTo(new Point(x1, y1), new Point(x2, y2));
private static void DeserializeQuadraticBezierTo(BinaryReader br, byte firstByte, StreamGeometryContext sc)
{
Point point1;
Point point2 = new Point();
bool isStroked;
bool isSmoothJoin;
DeserializePointAndTwoBools(br, firstByte, out point1, out isStroked, out isSmoothJoin);
point2.X = XamlSerializationHelper.ReadDouble(br);
point2.Y = XamlSerializationHelper.ReadDouble(br);
sc.QuadraticBezierTo(point1, point2, isStroked, isSmoothJoin);
}
protected internal override void ApplyTo(StreamGeometryContext ctx)
{
ctx.QuadraticBezierTo(Point1, Point2);
}
/// <summary>
/// Parse a PathFigureCollection string
/// </summary>
internal void ParseToGeometryContext(
StreamGeometryContext context,
string pathString,
int startIndex)
{
// [BreakingChange] Dev10 Bug #453199
// We really should throw an ArgumentNullException here for context and pathString.
// From original code
// This is only used in call to Double.Parse
_formatProvider = System.Globalization.CultureInfo.InvariantCulture;
_context = context;
_pathString = pathString;
_pathLength = pathString.Length;
_curIndex = startIndex;
_secondLastPoint = new Point(0, 0);
_lastPoint = new Point(0, 0);
_lastStart = new Point(0, 0);
_figureStarted = false;
bool first = true;
char last_cmd = ' ';
while (ReadToken()) // Empty path is allowed in XAML
{
char cmd = _token;
if (first)
{
if ((cmd != 'M') && (cmd != 'm')) // Path starts with M|m
{
ThrowBadToken();
}
first = false;
}
switch (cmd)
{
case 'm':
case 'M':
// XAML allows multiple points after M/m
_lastPoint = ReadPoint(cmd, !AllowComma);
context.BeginFigure(_lastPoint, IsFilled, !IsClosed);
_figureStarted = true;
_lastStart = _lastPoint;
last_cmd = 'M';
while (IsNumber(AllowComma))
{
_lastPoint = ReadPoint(cmd, !AllowComma);
context.LineTo(_lastPoint, IsStroked, !IsSmoothJoin);
last_cmd = 'L';
}
break;
case 'l':
case 'L':
case 'h':
case 'H':
case 'v':
case 'V':
EnsureFigure();
do
{
switch (cmd)
{
case 'l': _lastPoint = ReadPoint(cmd, !AllowComma); break;
case 'L': _lastPoint = ReadPoint(cmd, !AllowComma); break;
case 'h': _lastPoint.X += ReadNumber(!AllowComma); break;
case 'H': _lastPoint.X = ReadNumber(!AllowComma); break;
case 'v': _lastPoint.Y += ReadNumber(!AllowComma); break;
case 'V': _lastPoint.Y = ReadNumber(!AllowComma); break;
}
context.LineTo(_lastPoint, IsStroked, !IsSmoothJoin);
}while (IsNumber(AllowComma));
last_cmd = 'L';
break;
case 'c':
case 'C': // cubic Bezier
case 's':
case 'S': // smooth cublic Bezier
EnsureFigure();
do
{
Point p;
if ((cmd == 's') || (cmd == 'S'))
{
if (last_cmd == 'C')
{
p = Reflect();
}
else
{
p = _lastPoint;
}
_secondLastPoint = ReadPoint(cmd, !AllowComma);
}
else
{
p = ReadPoint(cmd, !AllowComma);
_secondLastPoint = ReadPoint(cmd, AllowComma);
}
_lastPoint = ReadPoint(cmd, AllowComma);
context.BezierTo(p, _secondLastPoint, _lastPoint, IsStroked, !IsSmoothJoin);
last_cmd = 'C';
}while (IsNumber(AllowComma));
break;
case 'q':
case 'Q': // quadratic Bezier
case 't':
case 'T': // smooth quadratic Bezier
EnsureFigure();
do
{
if ((cmd == 't') || (cmd == 'T'))
{
if (last_cmd == 'Q')
{
_secondLastPoint = Reflect();
}
else
{
_secondLastPoint = _lastPoint;
}
_lastPoint = ReadPoint(cmd, !AllowComma);
}
else
{
_secondLastPoint = ReadPoint(cmd, !AllowComma);
_lastPoint = ReadPoint(cmd, AllowComma);
}
context.QuadraticBezierTo(_secondLastPoint, _lastPoint, IsStroked, !IsSmoothJoin);
last_cmd = 'Q';
}while (IsNumber(AllowComma));
break;
case 'a':
case 'A':
EnsureFigure();
do
{
// A 3,4 5, 0, 0, 6,7
double w = ReadNumber(!AllowComma);
double h = ReadNumber(AllowComma);
double rotation = ReadNumber(AllowComma);
bool large = ReadBool();
bool sweep = ReadBool();
_lastPoint = ReadPoint(cmd, AllowComma);
context.ArcTo(
_lastPoint,
new Size(w, h),
rotation,
large,
#if PBTCOMPILER
sweep,
#else
sweep ? SweepDirection.Clockwise : SweepDirection.Counterclockwise,
#endif
IsStroked,
!IsSmoothJoin
);
}while (IsNumber(AllowComma));
last_cmd = 'A';
break;
case 'z':
case 'Z':
EnsureFigure();
context.SetClosedState(IsClosed);
_figureStarted = false;
last_cmd = 'Z';
_lastPoint = _lastStart; // Set reference point to be first point of current figure
break;
default:
ThrowBadToken();
break;
}
}
}
/// <summary>
/// Parse a PathFigureCollection string
/// </summary>
internal void ParseToGeometryContext(StreamGeometryContext context, string pathString, int startIndex)
{
// [BreakingChange] Dev10 Bug #453199
// We really should throw an ArgumentNullException here for context and pathString.
// From original code
// This is only used in call to Double.Parse
this.formatProvider = CultureInfo.InvariantCulture;
this.context = context;
this.pathString = pathString;
this.pathLength = pathString.Length;
this.curIndex = startIndex;
this.secondLastPoint = new Point(0, 0);
this.lastPoint = new Point(0, 0);
this.lastStart = new Point(0, 0);
this.figureStarted = false;
bool first = true;
char lastCmd = ' ';
while (this.ReadToken()) // Empty path is allowed in XAML
{
char cmd = this.token;
if (first)
{
if ((cmd != 'M') && (cmd != 'm')) // Path starts with M|m
{
this.ThrowBadToken();
}
first = false;
}
switch (cmd)
{
case 'm':
case 'M':
// XAML allows multiple points after M/m
this.lastPoint = this.ReadPoint(cmd, !this.allowComma);
context.BeginFigure(this.lastPoint, this.isFilled, !this.isClosed);
this.figureStarted = true;
this.lastStart = this.lastPoint;
lastCmd = 'M';
while (this.IsNumber(this.allowComma))
{
this.lastPoint = this.ReadPoint(cmd, !this.allowComma);
context.LineTo(this.lastPoint, this.isStroked, !this.isSmoothJoin);
lastCmd = 'L';
}
break;
case 'l':
case 'L':
case 'h':
case 'H':
case 'v':
case 'V':
this.EnsureFigure();
do
{
switch (cmd)
{
case 'l':
this.lastPoint = this.ReadPoint(cmd, !this.allowComma);
break;
case 'L':
this.lastPoint = this.ReadPoint(cmd, !this.allowComma);
break;
case 'h':
this.lastPoint.X += this.ReadNumber(!this.allowComma);
break;
case 'H':
this.lastPoint.X = this.ReadNumber(!this.allowComma);
break;
case 'v':
this.lastPoint.Y += this.ReadNumber(!this.allowComma);
break;
case 'V':
this.lastPoint.Y = this.ReadNumber(!this.allowComma);
break;
}
context.LineTo(this.lastPoint, this.isStroked, !this.isSmoothJoin);
}while (this.IsNumber(this.allowComma));
lastCmd = 'L';
break;
case 'c':
case 'C': // cubic Bezier
case 's':
case 'S': // smooth cublic Bezier
this.EnsureFigure();
do
{
Point p;
if ((cmd == 's') || (cmd == 'S'))
{
if (lastCmd == 'C')
{
p = this.Reflect();
}
else
{
p = this.lastPoint;
}
this.secondLastPoint = this.ReadPoint(cmd, !this.allowComma);
}
else
{
p = this.ReadPoint(cmd, !this.allowComma);
this.secondLastPoint = this.ReadPoint(cmd, this.allowComma);
}
this.lastPoint = this.ReadPoint(cmd, this.allowComma);
context.BezierTo(p, this.secondLastPoint, this.lastPoint, this.isStroked, !this.isSmoothJoin);
lastCmd = 'C';
}while (this.IsNumber(this.allowComma));
break;
case 'q':
case 'Q': // quadratic Bezier
case 't':
case 'T': // smooth quadratic Bezier
this.EnsureFigure();
do
{
if ((cmd == 't') || (cmd == 'T'))
{
if (lastCmd == 'Q')
{
this.secondLastPoint = this.Reflect();
}
else
{
this.secondLastPoint = this.lastPoint;
}
this.lastPoint = this.ReadPoint(cmd, !this.allowComma);
}
else
{
this.secondLastPoint = this.ReadPoint(cmd, !this.allowComma);
this.lastPoint = this.ReadPoint(cmd, this.allowComma);
}
context.QuadraticBezierTo(this.secondLastPoint, this.lastPoint, this.isStroked, !this.isSmoothJoin);
lastCmd = 'Q';
}while (this.IsNumber(this.allowComma));
break;
case 'a':
case 'A':
this.EnsureFigure();
do
{
// A 3,4 5, 0, 0, 6,7
double w = this.ReadNumber(!this.allowComma);
double h = this.ReadNumber(this.allowComma);
double rotation = this.ReadNumber(this.allowComma);
bool large = this.ReadBool();
bool sweep = this.ReadBool();
this.lastPoint = this.ReadPoint(cmd, this.allowComma);
context.ArcTo(
this.lastPoint,
new Size(w, h),
rotation,
large,
#if PBTCOMPILER
sweep,
#else
sweep ? SweepDirection.Clockwise : SweepDirection.Counterclockwise,
#endif
this.isStroked,
!this.isSmoothJoin);
}while (this.IsNumber(this.allowComma));
lastCmd = 'A';
break;
case 'z':
case 'Z':
this.EnsureFigure();
//context.SetClosedState(isClosed);
var mi = context.GetType().GetMethod("SetClosedState", BindingFlags.Instance | BindingFlags.NonPublic);
if (mi != null)
{
var pia = mi.GetParameters();
if (pia != null && pia.Length == 1 && pia[0].ParameterType == typeof(bool))
{
mi.Invoke(context, new object[] { this.isClosed });
}
}
this.figureStarted = false;
lastCmd = 'Z';
this.lastPoint = this.lastStart; // Set reference point to be first point of current figure
break;
default:
this.ThrowBadToken();
break;
}
}
}
private static void Draw(StreamGeometryContext dc, IPathCommand element, IPathCommand previous, Vector startOffset)
{
if (element is LineTo)
{
dc.LineTo(new System.Windows.Point((element as LineTo).X + startOffset.X, (element as LineTo).Y + startOffset.Y), true, true);
}
else if (element is MoveTo)
{
dc.LineTo(new System.Windows.Point((element as MoveTo).X + startOffset.X, (element as MoveTo).Y + startOffset.Y), false, true);
}
else if (element is CurveTo)
{
Point controlStart = Point.Add((element as CurveTo).ControlStart.ToWinPoint(), startOffset);
Point controlEnd = Point.Add((element as CurveTo).ControlEnd.ToWinPoint(), startOffset);
Point end = Point.Add((element as CurveTo).End.ToWinPoint(), startOffset);
dc.BezierTo(controlStart, controlEnd, end, true, true);
}
else if (element is EllipticalArcTo)
{
dc.ArcTo(Point.Add((element as EllipticalArcTo).End.ToWinPoint(), startOffset), (element as EllipticalArcTo).Size.ToWinSize(), (element as EllipticalArcTo).RotationAngle, (element as EllipticalArcTo).IsLargeArc, (element as EllipticalArcTo).SweepDirection == Path.SweepDirection.Clockwise ? System.Windows.Media.SweepDirection.Clockwise : System.Windows.Media.SweepDirection.Counterclockwise, true, true);
}
else if (element is SmoothCurveTo)
{
SmoothCurveTo item = element as SmoothCurveTo;
// If previous command is not S or C, then control points are the same
Point controlStart = item.ControlEnd.ToWinPoint();
// Else reflect ControlEnd of previous command in StartPoint
if (previous is SmoothCurveTo)
{
controlStart = ReflectPointIn((previous as SmoothCurveTo).ControlEnd.ToWinPoint(), (previous as SmoothCurveTo).End.ToWinPoint());
}
else if (previous is CurveTo)
{
controlStart = ReflectPointIn((previous as CurveTo).ControlEnd.ToWinPoint(), (previous as CurveTo).End.ToWinPoint());
}
dc.BezierTo(Point.Add(controlStart, startOffset), Point.Add(item.ControlEnd.ToWinPoint(), startOffset), Point.Add(item.End.ToWinPoint(), startOffset), true, true);
}
else if (element is SmoothQuadraticBeizerCurveTo)
{
SmoothQuadraticBeizerCurveTo item = element as SmoothQuadraticBeizerCurveTo;
if (previous is SmoothQuadraticBeizerCurveTo)
{
throw new NotSupportedException();
}
else if (previous is QuadraticBeizerCurveTo)
{
throw new NotSupportedException();
}
else
{
// If previous command is not Q or T, then draw a line
dc.LineTo(item.End.ToWinPoint(), true, true);
}
}
else if (element is QuadraticBeizerCurveTo)
{
QuadraticBeizerCurveTo item = element as QuadraticBeizerCurveTo;
dc.QuadraticBezierTo(Point.Add(item.Control.ToWinPoint(), startOffset), Point.Add(item.End.ToWinPoint(), startOffset), true, true);
}
}
