////////////////////////////////////////////////////////////////////
// Draw Happy Face
////////////////////////////////////////////////////////////////////
private void DrawHappyFace
(
PdfContents Contents
)
{
// save graphics state
Contents.SaveGraphicsState();
// translate coordinate origin to the center of the happy face
Contents.Translate(4.25, 7.5);
// change nonstroking (fill) color to yellow
Contents.SetColorNonStroking(Color.Yellow);
// draw happy face yellow oval
Contents.DrawOval(-1.5, -1.0, 3.0, 2.0, PaintOp.Fill);
// set line width to 0.2" this is the black circle around the eye
Contents.SetLineWidth(0.2);
// eye color is white with black outline circle
Contents.SetColorNonStroking(Color.White);
Contents.SetColorStroking(Color.Black);
// draw eyes
Contents.DrawOval(-0.75, 0.0, 0.5, 0.5, PaintOp.CloseFillStroke);
Contents.DrawOval(0.25, 0.0, 0.5, 0.5, PaintOp.CloseFillStroke);
// mouth color is black
Contents.SetColorNonStroking(Color.Black);
// draw mouth by creating a path made of one line and one Bezier curve
Contents.MoveTo(-0.6, -0.4);
Contents.LineTo(0.6, -0.4);
Contents.DrawBezier(0.0, -0.8, 0, -0.8, -0.6, -0.4);
// fill the path with black color
Contents.SetPaintOp(PaintOp.Fill);
// restore graphics sate
Contents.RestoreGraphicsState();
return;
}
private void BuildPath
(
PdfContents Contents,
PaintOp PaintOperator
)
{
// every figure is a separated subpath and contains some segments
foreach (SysMedia.PathFigure SubPath in MediaPath.Figures)
{
// get start of sub-path point
PointD CurPoint = PathToDrawing(SubPath.StartPoint);
PointD StartPoint = CurPoint;
Contents.MoveTo(CurPoint);
// process all points of one sub-path
foreach (SysMedia.PathSegment Seg in SubPath.Segments)
{
// line segment
if (Seg.GetType() == typeof(SysMedia.LineSegment))
{
CurPoint = PathToDrawing(((SysMedia.LineSegment)Seg).Point);
Contents.LineTo(CurPoint);
}
// polygon
else if (Seg.GetType() == typeof(SysMedia.PolyLineSegment))
{
SysMedia.PolyLineSegment LineSegArray = (SysMedia.PolyLineSegment)Seg;
foreach (SysWin.Point PolyPoint in LineSegArray.Points)
{
CurPoint = PathToDrawing(PolyPoint);
Contents.LineTo(CurPoint);
}
}
// cubic bezier segment
else if (Seg.GetType() == typeof(SysMedia.BezierSegment))
{
SysMedia.BezierSegment BezierSeg = (SysMedia.BezierSegment)Seg;
CurPoint = PathToDrawing(BezierSeg.Point3);
Contents.DrawBezier(PathToDrawing(BezierSeg.Point1), PathToDrawing(BezierSeg.Point2), CurPoint);
}
// cubic bezier multi segments
else if (Seg.GetType() == typeof(SysMedia.PolyBezierSegment))
{
SysMedia.PolyBezierSegment BezierSegArray = (SysMedia.PolyBezierSegment)Seg;
int Count = BezierSegArray.Points.Count;
for (int Index = 0; Index < Count; Index += 3)
{
CurPoint = PathToDrawing(BezierSegArray.Points[Index + 2]);
Contents.DrawBezier(PathToDrawing(BezierSegArray.Points[Index]), PathToDrawing(BezierSegArray.Points[Index + 1]), CurPoint);
}
}
// quadratic bezier segment
else if (Seg.GetType() == typeof(SysMedia.QuadraticBezierSegment))
{
SysMedia.QuadraticBezierSegment BezierSeg = (SysMedia.QuadraticBezierSegment)Seg;
PointD NextPoint = PathToDrawing(BezierSeg.Point2);
Contents.DrawBezier(new BezierD(CurPoint, PathToDrawing(BezierSeg.Point1), NextPoint), BezierPointOne.Ignore);
CurPoint = NextPoint;
}
// quadratic bezier multi segments
else if (Seg.GetType() == typeof(SysMedia.PolyQuadraticBezierSegment))
{
SysMedia.PolyQuadraticBezierSegment BezierSegArray = (SysMedia.PolyQuadraticBezierSegment)Seg;
int Count = BezierSegArray.Points.Count;
for (int Index = 0; Index < Count; Index += 2)
{
PointD NextPoint = PathToDrawing(BezierSegArray.Points[Index + 1]);
Contents.DrawBezier(new BezierD(CurPoint, PathToDrawing(BezierSegArray.Points[Index]), NextPoint), BezierPointOne.Ignore);
CurPoint = NextPoint;
}
}
// draw arc
else if (Seg.GetType() == typeof(SysMedia.ArcSegment))
{
SysMedia.ArcSegment Arc = (SysMedia.ArcSegment)Seg;
PointD NextPoint = PathToDrawing(Arc.Point);
ArcType ArcType;
if (Arc.SweepDirection == (PathYAxis == YAxisDirection.Down ? SysMedia.SweepDirection.Counterclockwise : SysMedia.SweepDirection.Clockwise))
{
ArcType = Arc.IsLargeArc ? ArcType.LargeCounterClockWise : ArcType.SmallCounterClockWise;
}
else
{
ArcType = Arc.IsLargeArc ? ArcType.LargeClockWise : ArcType.SmallClockWise;
}
Contents.DrawArc(CurPoint, NextPoint, SizeToDrawing(Arc.Size), Arc.RotationAngle, ArcType, BezierPointOne.Ignore);
CurPoint = NextPoint;
}
// should no happen
else
{
throw new ApplicationException("Windows Media path: unknown path segment.");
}
}
// for stroke set paint operator for each sub-path
if (SubPath.IsClosed)
{
Contents.SetPaintOp(PaintOp.CloseSubPath);
}
}
// paint operator
Contents.SetPaintOp(PaintOperator);
return;
}
