public void QuadraticCurveTo(PDFPoint end, PDFPoint handle)
{
PathQuadraticCurve arc = new PathQuadraticCurve()
{
EndPoint = end, ControlPoint = handle
};
CurrentPath.Add(arc);
IncludeInBounds(end);
IncludeInBounds(handle);
Cursor = end;
LastHandle = handle;
}
public void QuadraticCurveFor(PDFPoint endDelta, PDFPoint handleDelta)
{
PDFPoint end = ConvertDeltaToActual(endDelta);
PDFPoint handle = ConvertDeltaToActual(handleDelta);
PathQuadraticCurve arc = new PathQuadraticCurve()
{
EndPoint = end, ControlPoint = handle
};
CurrentPath.Add(arc);
IncludeInBounds(end);
IncludeInBounds(handle);
Cursor = end;
LastHandle = handle;
}
internal static IEnumerable <PathBezierCurveData> GetBezierCurvesForQuadratic(PDFPoint start, PathQuadraticCurve quad)
{
PathBezierCurveData[] all = new PathBezierCurveData[1];
try
{
double x1 = start.X.PointsValue + (quad.ControlPoint.X.PointsValue - start.X.PointsValue) * 2 / 3;
double y1 = start.Y.PointsValue + (quad.ControlPoint.Y.PointsValue - start.Y.PointsValue) * 2 / 3;
PDFPoint startHandle = new PDFPoint(x1, y1);
double x2 = quad.ControlPoint.X.PointsValue + (quad.EndPoint.X.PointsValue - quad.ControlPoint.X.PointsValue) / 3;
double y2 = quad.ControlPoint.Y.PointsValue + (quad.EndPoint.Y.PointsValue - quad.ControlPoint.Y.PointsValue) / 3;
PDFPoint endHandle = new PDFPoint(x2, y2);
PathBezierCurveData one = new PathBezierCurveData(quad.EndPoint, startHandle, endHandle, true, true);
all[0] = one;
}
catch (Exception ex)
{
throw new PDFException(Errors.CouldNotBuildPathFromQuadratic, ex);
}
return(all);
}
private void RenderPathOp(PathData data, PDFPoint location, ref PDFPoint cursor)
{
switch (data.Type)
{
case PathDataType.Move:
PathMoveData move = (PathMoveData)data;
cursor = move.MoveTo;
this.RenderMoveTo(move.MoveTo.X + location.X, move.MoveTo.Y + location.Y);
break;
case PathDataType.Line:
PathLineData line = (PathLineData)data;
cursor = line.LineTo;
this.RenderLineTo(line.LineTo.X + location.X, line.LineTo.Y + location.Y);
break;
case PathDataType.Rect:
PathRectData rect = (PathRectData)data;
cursor = rect.Rect.Location;
this.RenderRectangle(rect.Rect.X + location.X, rect.Rect.Y + location.Y, rect.Rect.Width, rect.Rect.Height);
break;
case PathDataType.SubPath:
PathSubPathData sub = (PathSubPathData)data;
this.RenderPathData(location, sub.InnerPath, ref cursor);
break;
case PathDataType.Bezier:
PathBezierCurveData bez = (PathBezierCurveData)data;
cursor = bez.EndPoint;
if (bez.HasStartHandle && bez.HasEndHandle)
{
this.RenderBezierCurveTo(bez.EndPoint.X + location.X, bez.EndPoint.Y + location.Y,
bez.StartHandle.X + location.X, bez.StartHandle.Y + location.Y,
bez.EndHandle.X + location.X, bez.EndHandle.Y + location.Y);
}
else if (bez.HasStartHandle)
{
this.RenderBezierCurveToWithStartHandleOnly(bez.EndPoint.X + location.X, bez.EndPoint.Y + location.Y,
bez.StartHandle.X + location.X, bez.StartHandle.Y + location.Y);
}
else if (bez.HasEndHandle)
{
this.RenderBezierCurveToWithEndHandleOnly(bez.EndPoint.X + location.X, bez.EndPoint.Y + location.Y,
bez.EndHandle.X + location.X, bez.EndHandle.Y + location.Y);
}
else
{
this.RenderLineTo(bez.Points[2].X, bez.Points[2].Y);
}
break;
case PathDataType.Arc:
IEnumerable <PathBezierCurveData> segments;
PathArcData arc = (PathArcData)data;
segments = PathDataHelper.GetBezierCurvesForArc(cursor, arc);
foreach (PathBezierCurveData segment in segments)
{
this.RenderBezierCurveTo(segment.EndPoint.X + location.X,
segment.EndPoint.Y + location.Y,
segment.StartHandle.X + location.X,
segment.StartHandle.Y + location.Y,
segment.EndHandle.X + location.X,
segment.EndHandle.Y + location.Y);
}
cursor = arc.EndPoint;
break;
case PathDataType.Quadratic:
IEnumerable <PathBezierCurveData> quadSegments;
PathQuadraticCurve quad = (PathQuadraticCurve)data;
quadSegments = PathDataHelper.GetBezierCurvesForQuadratic(cursor, quad);
foreach (PathBezierCurveData quadSeg in quadSegments)
{
this.RenderBezierCurveTo(quadSeg.EndPoint.X + location.X, quadSeg.EndPoint.Y + location.Y,
quadSeg.StartHandle.X + location.X, quadSeg.StartHandle.Y + location.Y,
quadSeg.EndHandle.X + location.X, quadSeg.EndHandle.Y + location.Y);
}
cursor = quad.EndPoint;
break;
case PathDataType.Close:
this.RenderClosePathOp();
cursor = PDFPoint.Empty;
break;
default:
throw new ArgumentOutOfRangeException("data.Type");
}
}
