void CreatePath()
{
droidGraphics.Path path = null;
if (points != null && points.Count > 1)
{
path = new droidGraphics.Path();
path.SetFillType(fillType);
path.MoveTo(pixelsPerDip * (float)points[0].X,
pixelsPerDip * (float)points[0].Y);
for (int index = 1; index < points.Count; index++)
{
path.LineTo(pixelsPerDip * (float)points[index].X,
pixelsPerDip * (float)points[index].Y);
}
if (this is PolygonDrawableView)
{
path.Close();
}
}
Path = path;
}
public void DrawPath(IEnumerable<PathOperation> ops, Pen pen = null, BaseBrush brush = null)
{
using (var path = new Path())
{
var bb = new BoundingBoxBuilder();
foreach (var op in ops)
{
var moveTo = op as MoveTo;
if (moveTo != null)
{
var start = moveTo.Start;
var end = moveTo.End;
path.MoveTo((float) start.X, (float) start.Y);
bb.Add(start);
bb.Add(end);
continue;
}
var lineTo = op as LineTo;
if (lineTo != null)
{
var start = lineTo.Start;
var end = lineTo.End;
path.LineTo((float) start.X, (float) start.Y);
path.LineTo((float) end.X, (float) end.Y);
bb.Add(start);
bb.Add(end);
continue;
}
var at = op as ArcTo;
if (at != null)
{
var p = at.Point;
path.LineTo((float) p.X, (float) p.Y);
bb.Add(p);
continue;
}
var curveTo = op as CurveTo;
if (curveTo != null)
{
var end = curveTo.End;
var firstControlPoint = curveTo.FirstControlPoint;
var secondControlPoint = curveTo.SecondControlPoint;
path.CubicTo((float) firstControlPoint.X, (float) firstControlPoint.Y, (float) secondControlPoint.X,
(float) secondControlPoint.Y, (float) end.X, (float) end.Y);
bb.Add(firstControlPoint);
bb.Add(secondControlPoint);
bb.Add(end);
continue;
}
var cp = op as ClosePath;
if (cp != null)
{
path.Close();
continue;
}
throw new NotSupportedException("Path Op " + op);
}
var frame = bb.BoundingBox;
if (brush != null)
{
var solidBrush = brush as SolidBrush;
if (solidBrush != null)
{
path.SetFillType(GetPathFillType(((SolidBrush)brush).FillMode));
}
var brushPaint = GetBrushPaint(brush, frame);
graphics.DrawPath(path, brushPaint);
}
if (pen != null)
{
var penPaint = GetPenPaint(pen);
graphics.DrawPath(path, penPaint);
}
}
}
public static APath ToAPath(this Geometry geometry, Context context)
{
APath path = new APath();
float density = context.Resources.DisplayMetrics.Density;
if (geometry is LineGeometry)
{
LineGeometry lineGeometry = geometry as LineGeometry;
path.MoveTo(
density * (float)lineGeometry.StartPoint.X,
density * (float)lineGeometry.StartPoint.Y);
path.LineTo(
density * (float)lineGeometry.EndPoint.X,
density * (float)lineGeometry.EndPoint.Y);
}
else if (geometry is RectangleGeometry)
{
FormsRectangle rect = (geometry as RectangleGeometry).Rect;
path.AddRect(
density * (float)rect.Left,
density * (float)rect.Top,
density * (float)rect.Right,
density * (float)rect.Bottom,
APath.Direction.Cw);
}
else if (geometry is EllipseGeometry)
{
EllipseGeometry ellipseGeometry = geometry as EllipseGeometry;
path.AddOval(new RectF(
density * (float)(ellipseGeometry.Center.X - ellipseGeometry.RadiusX),
density * (float)(ellipseGeometry.Center.Y - ellipseGeometry.RadiusY),
density * (float)(ellipseGeometry.Center.X + ellipseGeometry.RadiusX),
density * (float)(ellipseGeometry.Center.Y + ellipseGeometry.RadiusY)),
APath.Direction.Cw);
}
else if (geometry is GeometryGroup)
{
GeometryGroup geometryGroup = geometry as GeometryGroup;
path.SetFillType(geometryGroup.FillRule == FillRule.Nonzero ? APath.FillType.Winding : APath.FillType.EvenOdd);
foreach (Geometry child in geometryGroup.Children)
{
APath childPath = child.ToAPath(context);
path.AddPath(childPath);
}
}
else if (geometry is PathGeometry)
{
PathGeometry pathGeometry = geometry as PathGeometry;
path.SetFillType(pathGeometry.FillRule == FillRule.Nonzero ? APath.FillType.Winding : APath.FillType.EvenOdd);
foreach (PathFigure pathFigure in pathGeometry.Figures)
{
path.MoveTo(
density * (float)pathFigure.StartPoint.X,
density * (float)pathFigure.StartPoint.Y);
Point lastPoint = pathFigure.StartPoint;
foreach (PathSegment pathSegment in pathFigure.Segments)
{
// LineSegment
if (pathSegment is LineSegment)
{
LineSegment lineSegment = pathSegment as LineSegment;
path.LineTo(
density * (float)lineSegment.Point.X,
density * (float)lineSegment.Point.Y);
lastPoint = lineSegment.Point;
}
// PolylineSegment
else if (pathSegment is PolyLineSegment)
{
PolyLineSegment polylineSegment = pathSegment as PolyLineSegment;
PointCollection points = polylineSegment.Points;
for (int i = 0; i < points.Count; i++)
{
path.LineTo(
density * (float)points[i].X,
density * (float)points[i].Y);
}
lastPoint = points[points.Count - 1];
}
// BezierSegment
else if (pathSegment is BezierSegment)
{
BezierSegment bezierSegment = pathSegment as BezierSegment;
path.CubicTo(
density * (float)bezierSegment.Point1.X, density * (float)bezierSegment.Point1.Y,
density * (float)bezierSegment.Point2.X, density * (float)bezierSegment.Point2.Y,
density * (float)bezierSegment.Point3.X, density * (float)bezierSegment.Point3.Y);
lastPoint = bezierSegment.Point3;
}
// PolyBezierSegment
else if (pathSegment is PolyBezierSegment)
{
PolyBezierSegment polyBezierSegment = pathSegment as PolyBezierSegment;
PointCollection points = polyBezierSegment.Points;
if (points.Count >= 3)
{
for (int i = 0; i < points.Count; i += 3)
{
path.CubicTo(
density * (float)points[i + 0].X, density * (float)points[i + 0].Y,
density * (float)points[i + 1].X, density * (float)points[i + 1].Y,
density * (float)points[i + 2].X, density * (float)points[i + 2].Y);
}
}
lastPoint = points[points.Count - 1];
}
// QuadraticBezierSegment
else if (pathSegment is QuadraticBezierSegment)
{
QuadraticBezierSegment bezierSegment = pathSegment as QuadraticBezierSegment;
path.QuadTo(
density * (float)bezierSegment.Point1.X, density * (float)bezierSegment.Point1.Y,
density * (float)bezierSegment.Point2.X, density * (float)bezierSegment.Point2.Y);
lastPoint = bezierSegment.Point2;
}
// PolyQuadraticBezierSegment
else if (pathSegment is PolyQuadraticBezierSegment)
{
PolyQuadraticBezierSegment polyBezierSegment = pathSegment as PolyQuadraticBezierSegment;
PointCollection points = polyBezierSegment.Points;
if (points.Count >= 2)
{
for (int i = 0; i < points.Count; i += 2)
{
path.QuadTo(
density * (float)points[i + 0].X, density * (float)points[i + 0].Y,
density * (float)points[i + 1].X, density * (float)points[i + 1].Y);
}
}
lastPoint = points[points.Count - 1];
}
// ArcSegment
else if (pathSegment is ArcSegment)
{
ArcSegment arcSegment = pathSegment as ArcSegment;
List <Point> points = new List <Point>();
GeometryHelper.FlattenArc(
points,
lastPoint,
arcSegment.Point,
arcSegment.Size.Width,
arcSegment.Size.Height,
arcSegment.RotationAngle,
arcSegment.IsLargeArc,
arcSegment.SweepDirection == SweepDirection.CounterClockwise,
1);
for (int i = 0; i < points.Count; i++)
{
path.LineTo(
density * (float)points[i].X,
density * (float)points[i].Y);
}
if (points.Count > 0)
{
lastPoint = points[points.Count - 1];
}
}
}
if (pathFigure.IsClosed)
{
path.Close();
}
}
}
return(path);
}
private void DrawTriangle(Canvas c, float startAngle, float sweepAngle, Rect bounds)
{
if (mShowArrow)
{
if (mArrow == null)
{
mArrow = new Path();
mArrow.SetFillType(Path.FillType.EvenOdd);
}
else
{
mArrow.Reset();
}
float x = (float)(RingCenterRadius * Math.Cos(0) + bounds.ExactCenterX());
float y = (float)(RingCenterRadius * Math.Sin(0) + bounds.ExactCenterY());
mArrow.MoveTo(0, 0);
mArrow.LineTo((mArrowWidth) * mArrowScale, 0);
mArrow.LineTo(((mArrowWidth) * mArrowScale / 2), (mArrowHeight * mArrowScale));
mArrow.Offset(x - ((mArrowWidth) * mArrowScale / 2), y);
mArrow.Close();
mArrowPaint.Color = mColors[mColorIndex];
c.Rotate(startAngle + (sweepAngle < 0 ? 0 : sweepAngle) - ARROW_OFFSET_ANGLE, bounds.ExactCenterX(), bounds.ExactCenterY());
c.DrawPath(mArrow, mArrowPaint);
}
}
public void DrawPath(IEnumerable <PathOperation> ops, Pen pen = null, BaseBrush brush = null)
{
using (var path = new Path())
{
var bb = new BoundingBoxBuilder();
foreach (var op in ops)
{
var moveTo = op as MoveTo;
if (moveTo != null)
{
var start = moveTo.Start;
var end = moveTo.End;
path.MoveTo((float)start.X, (float)start.Y);
bb.Add(start);
bb.Add(end);
continue;
}
var lineTo = op as LineTo;
if (lineTo != null)
{
var start = lineTo.Start;
var end = lineTo.End;
path.LineTo((float)start.X, (float)start.Y);
path.LineTo((float)end.X, (float)end.Y);
bb.Add(start);
bb.Add(end);
continue;
}
var at = op as ArcTo;
if (at != null)
{
var p = at.Point;
path.LineTo((float)p.X, (float)p.Y);
bb.Add(p);
continue;
}
var curveTo = op as CurveTo;
if (curveTo != null)
{
var end = curveTo.End;
var firstControlPoint = curveTo.FirstControlPoint;
var secondControlPoint = curveTo.SecondControlPoint;
path.CubicTo((float)firstControlPoint.X, (float)firstControlPoint.Y, (float)secondControlPoint.X,
(float)secondControlPoint.Y, (float)end.X, (float)end.Y);
bb.Add(firstControlPoint);
bb.Add(secondControlPoint);
bb.Add(end);
continue;
}
var cp = op as ClosePath;
if (cp != null)
{
path.Close();
continue;
}
throw new NotSupportedException("Path Op " + op);
}
var frame = bb.BoundingBox;
if (brush != null)
{
var solidBrush = brush as SolidBrush;
if (solidBrush != null)
{
path.SetFillType(GetPathFillType(((SolidBrush)brush).FillMode));
}
var brushPaint = GetBrushPaint(brush, frame);
graphics.DrawPath(path, brushPaint);
}
if (pen != null)
{
var penPaint = GetPenPaint(pen);
graphics.DrawPath(path, penPaint);
}
}
}
void SetFillRule(droidGraphics.Path path, FillRule fillRule)
{
path.SetFillType(fillRule == FillRule.Nonzero ? droidGraphics.Path.FillType.Winding :
droidGraphics.Path.FillType.EvenOdd);
}
