public static PathGeometry AsPathGeometry(this PathF target, float scale = 1)
{
var geometry = new PathGeometry();
PathFigure figure = null;
var pointIndex = 0;
var arcAngleIndex = 0;
var arcClockwiseIndex = 0;
foreach (var type in target.SegmentTypes)
{
if (type == PathOperation.Move)
{
figure = new PathFigure();
geometry.Figures.Add(figure);
figure.StartPoint = target[pointIndex++].AsPoint(scale);
}
else if (type == PathOperation.Line)
{
var lineSegment = new LineSegment {
Point = target[pointIndex++].AsPoint(scale)
};
figure.Segments.Add(lineSegment);
}
else if (type == PathOperation.Quad)
{
var quadSegment = new QuadraticBezierSegment
{
Point1 = target[pointIndex++].AsPoint(scale),
Point2 = target[pointIndex++].AsPoint(scale)
};
figure.Segments.Add(quadSegment);
}
else if (type == PathOperation.Cubic)
{
var cubicSegment = new BezierSegment()
{
Point1 = target[pointIndex++].AsPoint(scale),
Point2 = target[pointIndex++].AsPoint(scale),
Point3 = target[pointIndex++].AsPoint(scale),
};
figure.Segments.Add(cubicSegment);
}
else if (type == PathOperation.Arc)
{
var topLeft = target[pointIndex++];
var bottomRight = target[pointIndex++];
var startAngle = target.GetArcAngle(arcAngleIndex++);
var endAngle = target.GetArcAngle(arcAngleIndex++);
var clockwise = target.GetArcClockwise(arcClockwiseIndex++);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var sweep = Geometry.GetSweep(startAngle, endAngle, clockwise);
var absSweep = Math.Abs(sweep);
var rectX = topLeft.X * scale;
var rectY = topLeft.Y * scale;
var rectWidth = bottomRight.X * scale - topLeft.X * scale;
var rectHeight = bottomRight.Y * scale - topLeft.Y * scale;
var startPoint = Geometry.OvalAngleToPoint(rectX, rectY, rectWidth, rectHeight, -startAngle);
var endPoint = Geometry.OvalAngleToPoint(rectX, rectY, rectWidth, rectHeight, -endAngle);
if (figure == null)
{
figure = new PathFigure();
geometry.Figures.Add(figure);
figure.StartPoint = startPoint.AsPoint();
}
else
{
var lineSegment = new LineSegment()
{
Point = startPoint.AsPoint()
};
figure.Segments.Add(lineSegment);
}
var arcSegment = new ArcSegment()
{
Point = new Point(endPoint.X, endPoint.Y),
Size = new Size(rectWidth / 2, rectHeight / 2),
SweepDirection = clockwise ? SweepDirection.Clockwise : SweepDirection.Counterclockwise,
IsLargeArc = absSweep >= 180,
};
figure.Segments.Add(arcSegment);
}
else if (type == PathOperation.Close)
{
figure.IsClosed = true;
}
}
return(geometry);
}
public static PathGeometry AsDxPath(this PathF path, float ppu, float ox, float oy, float fx, float fy, Factory factory, FillMode fillMode = FillMode.Winding)
{
var geometry = new PathGeometry(factory);
#if DEBUG
try
{
#endif
var sink = geometry.Open();
sink.SetFillMode(fillMode);
var ppux = ppu * fx;
var ppuy = ppu * fy;
var pointIndex = 0;
var arcAngleIndex = 0;
var arcClockwiseIndex = 0;
var figureOpen = false;
var segmentIndex = -1;
var lastOperation = PathOperation.Move;
foreach (var type in path.SegmentTypes)
{
segmentIndex++;
if (type == PathOperation.Move)
{
if (lastOperation != PathOperation.Close && lastOperation != PathOperation.Move)
{
sink.EndFigure(FigureEnd.Open);
//vPath = vPathGeometry.Open();
}
var point = path[pointIndex++];
/*var vBegin = FigureBegin.Hollow;
* if (path.IsSubPathClosed(vSegmentIndex))
* {
* vBegin = FigureBegin.Filled;
* }*/
var begin = FigureBegin.Filled;
sink.BeginFigure(ox + point.X * ppux, oy + point.Y * ppuy, begin);
figureOpen = true;
}
else if (type == PathOperation.Line)
{
var point = path[pointIndex++];
sink.LineTo(ox + point.X * ppux, oy + point.Y * ppuy);
}
else if (type == PathOperation.Quad)
{
var controlPoint = path[pointIndex++];
var endPoint = path[pointIndex++];
sink.QuadTo(
ox + controlPoint.X * ppux,
oy + controlPoint.Y * ppuy,
ox + endPoint.X * ppux,
oy + endPoint.Y * ppuy);
}
else if (type == PathOperation.Cubic)
{
var controlPoint1 = path[pointIndex++];
var controlPoint2 = path[pointIndex++];
var endPoint = path[pointIndex++];
sink.CubicTo(
ox + controlPoint1.X * ppux,
oy + controlPoint1.Y * ppuy,
ox + controlPoint2.X * ppux,
oy + controlPoint2.Y * ppuy,
ox + endPoint.X * ppux,
oy + endPoint.Y * ppuy);
}
else if (type == PathOperation.Arc)
{
var topLeft = path[pointIndex++];
var bottomRight = path[pointIndex++];
var startAngle = path.GetArcAngle(arcAngleIndex++);
var endAngle = path.GetArcAngle(arcAngleIndex++);
var clockwise = path.GetArcClockwise(arcClockwiseIndex++);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var rotation = Geometry.GetSweep(startAngle, endAngle, clockwise);
var absRotation = Math.Abs(rotation);
var rectX = ox + topLeft.X * ppux;
var rectY = oy + topLeft.Y * ppuy;
var rectWidth = (ox + bottomRight.X * ppux) - rectX;
var rectHeight = (oy + bottomRight.Y * ppuy) - rectY;
var startPoint = Geometry.EllipseAngleToPoint(rectX, rectY, rectWidth, rectHeight, -startAngle);
var endPoint = Geometry.EllipseAngleToPoint(rectX, rectY, rectWidth, rectHeight, -endAngle);
if (!figureOpen)
{
/*var vBegin = FigureBegin.Hollow;
* if (path.IsSubPathClosed(vSegmentIndex))
* {
* vBegin = FigureBegin.Filled;
* }*/
var begin = FigureBegin.Filled;
sink.BeginFigure(startPoint.X, startPoint.Y, begin);
figureOpen = true;
}
else
{
sink.LineTo(startPoint.X, startPoint.Y);
}
var arcSegment = new ArcSegment
{
Point = new Vector2(endPoint.X, endPoint.Y),
Size = new Size2F(rectWidth / 2, rectHeight / 2),
SweepDirection = clockwise ? SweepDirection.Clockwise : SweepDirection.CounterClockwise,
ArcSize = absRotation >= 180 ? ArcSize.Large : ArcSize.Small
};
sink.AddArc(arcSegment);
}
else if (type == PathOperation.Close)
{
sink.EndFigure(FigureEnd.Closed);
}
lastOperation = type;
}
if (segmentIndex >= 0 && lastOperation != PathOperation.Close)
{
sink.EndFigure(FigureEnd.Open);
}
sink.Close();
return(geometry);
#if DEBUG
}
catch (Exception exc)
{
geometry.Dispose();
var definition = path.ToDefinitionString();
Logger.Debug($"Unable to convert the path to a DXPath: {definition}", exc);
return(null);
}
#endif
}
public static GraphicsPath AsGDIPath(this PathF target, float ppu, float ox, float oy, float fx, float fy)
{
var path = new GraphicsPath();
#if DEBUG
try
{
#endif
float ppux = ppu * fx;
float ppuy = ppu * fy;
int pointIndex = 0;
var arcAngleIndex = 0;
var arcClockwiseIndex = 0;
foreach (var type in target.SegmentTypes)
{
if (type == PathOperation.Move)
{
path.StartFigure();
pointIndex++;
}
else if (type == PathOperation.Line)
{
var startPoint = target[pointIndex - 1];
var endPoint = target[pointIndex++];
path.AddLine(
ox + startPoint.X * ppux,
oy + startPoint.Y * ppuy,
ox + endPoint.X * ppux,
oy + endPoint.Y * ppuy);
}
else if (type == PathOperation.Quad)
{
var startPoint = target[pointIndex - 1];
var quadControlPoint = target[pointIndex++];
var endPoint = target[pointIndex++];
var cubicControlPoint1X = startPoint.X + 2.0f * (quadControlPoint.X - startPoint.X) / 3.0f;
var cubicControlPoint1Y = startPoint.Y + 2.0f * (quadControlPoint.Y - startPoint.Y) / 3.0f;
var cubicControlPoint2X = endPoint.X + 2.0f * (quadControlPoint.X - endPoint.X) / 3.0f;
var cubicControlPoint2Y = endPoint.Y + 2.0f * (quadControlPoint.Y - endPoint.Y) / 3.0f;
path.AddBezier(
ox + startPoint.X * ppux,
oy + startPoint.Y * ppuy,
ox + cubicControlPoint1X * ppux,
oy + cubicControlPoint1Y * ppuy,
ox + cubicControlPoint2X * ppux,
oy + cubicControlPoint2Y * ppuy,
ox + endPoint.X * ppux,
oy + endPoint.Y * ppuy);
}
else if (type == PathOperation.Cubic)
{
var startPoint = target[pointIndex - 1];
var cubicControlPoint1 = target[pointIndex++];
var cubicControlPoint2 = target[pointIndex++];
var endPoint = target[pointIndex++];
path.AddBezier(
ox + startPoint.X * ppux,
oy + startPoint.Y * ppuy,
ox + cubicControlPoint1.X * ppux,
oy + cubicControlPoint1.Y * ppuy,
ox + cubicControlPoint2.X * ppux,
oy + cubicControlPoint2.Y * ppuy,
ox + endPoint.X * ppux,
oy + endPoint.Y * ppuy);
}
else if (type == PathOperation.Arc)
{
var topLeft = target[pointIndex++];
var bottomRight = target[pointIndex++];
var startAngle = target.GetArcAngle(arcAngleIndex++);
var endAngle = target.GetArcAngle(arcAngleIndex++);
var clockwise = target.GetArcClockwise(arcClockwiseIndex++);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var x = ox + topLeft.X * ppux;
var y = oy + topLeft.Y * ppuy;
var width = (bottomRight.X - topLeft.X) * ppux;
var height = (bottomRight.Y - topLeft.Y) * ppuy;
float sweep = Geometry.GetSweep(startAngle, endAngle, clockwise);
if (!clockwise)
{
startAngle = endAngle;
}
startAngle *= -1;
path.AddArc(x, y, width, height, startAngle, sweep);
}
else if (type == PathOperation.Close)
{
path.CloseFigure();
}
}
return(path);
#if DEBUG
}
catch (Exception exc)
{
path.Dispose();
var definition = target.ToDefinitionString();
Logger.Debug(string.Format("Unable to convert the path to a GDIPath: {0}", definition), exc);
return(null);
}
#endif
}
public static CanvasGeometry AsPath(this PathF path, float ox, float oy, float fx, float fy, ICanvasResourceCreator creator, CanvasFilledRegionDetermination fillMode = CanvasFilledRegionDetermination.Winding)
{
var builder = new CanvasPathBuilder(creator);
#if DEBUG
try
{
#endif
builder.SetFilledRegionDetermination(fillMode);
var pointIndex = 0;
var arcAngleIndex = 0;
var arcClockwiseIndex = 0;
var figureOpen = false;
var segmentIndex = -1;
var lastOperation = PathOperation.Move;
foreach (var type in path.SegmentTypes)
{
segmentIndex++;
if (type == PathOperation.Move)
{
if (lastOperation != PathOperation.Close && lastOperation != PathOperation.Move)
{
builder.EndFigure(CanvasFigureLoop.Open);
}
var point = path[pointIndex++];
var begin = CanvasFigureFill.Default;
builder.BeginFigure(ox + point.X * fx, oy + point.Y * fy, begin);
figureOpen = true;
}
else if (type == PathOperation.Line)
{
var point = path[pointIndex++];
builder.AddLine(ox + point.X * fx, oy + point.Y * fy);
}
else if (type == PathOperation.Quad)
{
var controlPoint = path[pointIndex++];
var endPoint = path[pointIndex++];
builder.AddQuadraticBezier(
new Vector2(ox + controlPoint.X * fx, oy + controlPoint.Y * fy),
new Vector2(ox + endPoint.X * fx, oy + endPoint.Y * fy));
}
else if (type == PathOperation.Cubic)
{
var controlPoint1 = path[pointIndex++];
var controlPoint2 = path[pointIndex++];
var endPoint = path[pointIndex++];
builder.AddCubicBezier(
new Vector2(ox + controlPoint1.X * fx, oy + controlPoint1.Y * fy),
new Vector2(ox + controlPoint2.X * fx, oy + controlPoint2.Y * fy),
new Vector2(ox + endPoint.X * fx, oy + endPoint.Y * fy));
}
else if (type == PathOperation.Arc)
{
var topLeft = path[pointIndex++];
var bottomRight = path[pointIndex++];
var startAngle = path.GetArcAngle(arcAngleIndex++);
var endAngle = path.GetArcAngle(arcAngleIndex++);
var clockwise = path.GetArcClockwise(arcClockwiseIndex++);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var rotation = Geometry.GetSweep(startAngle, endAngle, clockwise);
var absRotation = Math.Abs(rotation);
var rectX = ox + topLeft.X * fx;
var rectY = oy + topLeft.Y * fy;
var rectWidth = (ox + bottomRight.X * fx) - rectX;
var rectHeight = (oy + bottomRight.Y * fy) - rectY;
var startPoint = Geometry.EllipseAngleToPoint(rectX, rectY, rectWidth, rectHeight, -startAngle);
var endPoint = Geometry.EllipseAngleToPoint(rectX, rectY, rectWidth, rectHeight, -endAngle);
if (!figureOpen)
{
var begin = CanvasFigureFill.Default;
builder.BeginFigure(startPoint.X, startPoint.Y, begin);
figureOpen = true;
}
else
{
builder.AddLine(startPoint.X, startPoint.Y);
}
builder.AddArc(
new Vector2(endPoint.X, endPoint.Y),
rectWidth / 2,
rectHeight / 2,
0,
clockwise ? CanvasSweepDirection.Clockwise : CanvasSweepDirection.CounterClockwise,
absRotation >= 180 ? CanvasArcSize.Large : CanvasArcSize.Small
);
}
else if (type == PathOperation.Close)
{
builder.EndFigure(CanvasFigureLoop.Closed);
}
lastOperation = type;
}
if (segmentIndex >= 0 && lastOperation != PathOperation.Close)
{
builder.EndFigure(CanvasFigureLoop.Open);
}
var geometry = CanvasGeometry.CreatePath(builder);
return(geometry);
#if DEBUG
}
catch (Exception exc)
{
builder.Dispose();
var definition = path.ToDefinitionString();
Logger.Debug(string.Format("Unable to convert the path to a Win2D Path: {0}", definition), exc);
return(null);
}
#endif
}
public static CGPath ToCGPath(
this PathF target)
{
var path = new CGPath();
int pointIndex = 0;
int arcAngleIndex = 0;
int arcClockwiseIndex = 0;
foreach (var operation in target.PathOperations)
{
if (operation == PathOperation.MoveTo)
{
var point = target[pointIndex++];
path.MoveToPoint(point.X, point.Y);
}
else if (operation == PathOperation.Line)
{
var endPoint = target[pointIndex++];
path.AddLineToPoint(endPoint.X, endPoint.Y);
}
else if (operation == PathOperation.Quad)
{
var controlPoint = target[pointIndex++];
var endPoint = target[pointIndex++];
path.AddQuadCurveToPoint(
controlPoint.X,
controlPoint.Y,
endPoint.X,
endPoint.Y);
}
else if (operation == PathOperation.Cubic)
{
var controlPoint1 = target[pointIndex++];
var controlPoint2 = target[pointIndex++];
var endPoint = target[pointIndex++];
path.AddCurveToPoint(
controlPoint1.X,
controlPoint1.Y,
controlPoint2.X,
controlPoint2.Y,
endPoint.X,
endPoint.Y);
}
else if (operation == PathOperation.Arc)
{
var topLeft = target[pointIndex++];
var bottomRight = target[pointIndex++];
float startAngle = target.GetArcAngle(arcAngleIndex++);
float endAngle = target.GetArcAngle(arcAngleIndex++);
var clockwise = target.IsArcClockwise(arcClockwiseIndex++);
var startAngleInRadians = GraphicsOperations.DegreesToRadians(-startAngle);
var endAngleInRadians = GraphicsOperations.DegreesToRadians(-endAngle);
while (startAngleInRadians < 0)
{
startAngleInRadians += (float)Math.PI * 2;
}
while (endAngleInRadians < 0)
{
endAngleInRadians += (float)Math.PI * 2;
}
var cx = (bottomRight.X + topLeft.X) / 2;
var cy = (bottomRight.Y + topLeft.Y) / 2;
var width = bottomRight.X - topLeft.X;
var height = bottomRight.Y - topLeft.Y;
var r = width / 2;
var transform = CGAffineTransform.MakeTranslation(cx, cy);
transform = CGAffineTransform.Multiply(CGAffineTransform.MakeScale(1, height / width), transform);
path.AddArc(transform, 0, 0, r, startAngleInRadians, endAngleInRadians, !clockwise);
}
else if (operation == PathOperation.Close)
{
path.CloseSubpath();
}
}
return(path);
}
public static SKPath AsRotatedAndroidPath(this PathF target, PointF center, float ppu, float zoom, float angle)
{
ppu = zoom * ppu;
var path = new SKPath();
var pointIndex = 0;
var arcAngleIndex = 0;
var arcClockwiseIndex = 0;
foreach (var type in target.SegmentTypes)
{
if (type == PathOperation.Move)
{
var point = target.GetRotatedPoint(pointIndex++, center, angle);
path.MoveTo(point.X * ppu, point.Y * ppu);
}
else if (type == PathOperation.Line)
{
var endPoint = target.GetRotatedPoint(pointIndex++, center, angle);
path.LineTo(endPoint.X * ppu, endPoint.Y * ppu);
}
else if (type == PathOperation.Quad)
{
var controlPoint1 = target.GetRotatedPoint(pointIndex++, center, angle);
var endPoint = target.GetRotatedPoint(pointIndex++, center, angle);
path.QuadTo(
controlPoint1.X * ppu,
controlPoint1.Y * ppu,
endPoint.X * ppu,
endPoint.Y * ppu);
}
else if (type == PathOperation.Cubic)
{
var controlPoint1 = target.GetRotatedPoint(pointIndex++, center, angle);
var controlPoint2 = target.GetRotatedPoint(pointIndex++, center, angle);
var endPoint = target.GetRotatedPoint(pointIndex++, center, angle);
path.CubicTo(
controlPoint1.X * ppu,
controlPoint1.Y * ppu,
controlPoint2.X * ppu,
controlPoint2.Y * ppu,
endPoint.X * ppu,
endPoint.Y * ppu);
}
else if (type == PathOperation.Arc)
{
var topLeft = target[pointIndex++];
var bottomRight = target[pointIndex++];
var startAngle = target.GetArcAngle(arcAngleIndex++);
var endAngle = target.GetArcAngle(arcAngleIndex++);
var clockwise = target.GetArcClockwise(arcClockwiseIndex++);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var rect = new SKRect(topLeft.X, topLeft.Y, bottomRight.X, bottomRight.Y);
var sweep = Geometry.GetSweep(startAngle, endAngle, clockwise);
startAngle *= -1;
if (!clockwise)
{
sweep *= -1;
}
path.AddArc(rect, startAngle, sweep);
}
else if (type == PathOperation.Close)
{
path.Close();
}
}
return(path);
}
public static CanvasGeometry AsPathFromSegment(this PathF path, int segmentIndex, float zoom, ICanvasResourceCreator creator)
{
float scale = 1 / zoom;
var builder = new CanvasPathBuilder(creator);
var type = path.GetSegmentType(segmentIndex);
if (type == PathOperation.Line)
{
int segmentStartingPointIndex = path.GetSegmentPointIndex(segmentIndex);
var startPoint = path[segmentStartingPointIndex - 1];
builder.BeginFigure(startPoint.X * scale, startPoint.Y * scale, CanvasFigureFill.Default);
var point = path[segmentStartingPointIndex];
builder.AddLine(point.X * scale, point.Y * scale);
}
else if (type == PathOperation.Quad)
{
int segmentStartingPointIndex = path.GetSegmentPointIndex(segmentIndex);
var startPoint = path[segmentStartingPointIndex - 1];
builder.BeginFigure(startPoint.X * scale, startPoint.Y * scale, CanvasFigureFill.Default);
var controlPoint = path[segmentStartingPointIndex++];
var endPoint = path[segmentStartingPointIndex];
builder.AddQuadraticBezier(
new Vector2(controlPoint.X * scale, controlPoint.Y * scale),
new Vector2(endPoint.X * scale, endPoint.Y * scale));
}
else if (type == PathOperation.Cubic)
{
int segmentStartingPointIndex = path.GetSegmentPointIndex(segmentIndex);
var startPoint = path[segmentStartingPointIndex - 1];
builder.BeginFigure(startPoint.X * scale, startPoint.Y * scale, CanvasFigureFill.Default);
var controlPoint1 = path[segmentStartingPointIndex++];
var controlPoint2 = path[segmentStartingPointIndex++];
var endPoint = path[segmentStartingPointIndex];
builder.AddCubicBezier(
new Vector2(controlPoint1.X * scale, controlPoint1.Y * scale),
new Vector2(controlPoint2.X * scale, controlPoint2.Y * scale),
new Vector2(endPoint.X * scale, endPoint.Y * scale));
}
else if (type == PathOperation.Arc)
{
path.GetSegmentInfo(segmentIndex, out var pointIndex, out var arcAngleIndex, out var arcClockwiseIndex);
var topLeft = path[pointIndex++];
var bottomRight = path[pointIndex];
var startAngle = path.GetArcAngle(arcAngleIndex++);
var endAngle = path.GetArcAngle(arcAngleIndex);
var clockwise = path.GetArcClockwise(arcClockwiseIndex);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var rotation = Geometry.GetSweep(startAngle, endAngle, clockwise);
var absRotation = Math.Abs(rotation);
var rectX = topLeft.X * scale;
var rectY = topLeft.Y * scale;
var rectWidth = (bottomRight.X * scale) - rectX;
var rectHeight = (bottomRight.Y * scale) - rectY;
var startPoint = Geometry.EllipseAngleToPoint(rectX, rectY, rectWidth, rectHeight, -startAngle);
var endPoint = Geometry.EllipseAngleToPoint(rectX, rectY, rectWidth, rectHeight, -endAngle);
builder.BeginFigure(startPoint.X * scale, startPoint.Y * scale, CanvasFigureFill.Default);
builder.AddArc(
new Vector2(endPoint.X, endPoint.Y),
rectWidth / 2,
rectHeight / 2,
0,
clockwise ? CanvasSweepDirection.Clockwise : CanvasSweepDirection.CounterClockwise,
absRotation >= 180 ? CanvasArcSize.Large : CanvasArcSize.Small
);
}
builder.EndFigure(CanvasFigureLoop.Open);
return(CanvasGeometry.CreatePath(builder));
}
public static SKPath AsSkiaPath(
this PathF path,
float ppu,
float ox,
float oy,
float fx,
float fy)
{
var nativePath = new SKPath();
var ppux = ppu * fx;
var ppuy = ppu * fy;
var pointIndex = 0;
var arcAngleIndex = 0;
var arcClockwiseIndex = 0;
foreach (var type in path.SegmentTypes)
{
if (type == PathOperation.Move)
{
var point = path[pointIndex++];
nativePath.MoveTo((ox + point.X * ppux), (oy + point.Y * ppuy));
}
else if (type == PathOperation.Line)
{
var point = path[pointIndex++];
nativePath.LineTo((ox + point.X * ppux), (oy + point.Y * ppuy));
}
else if (type == PathOperation.Quad)
{
var controlPoint = path[pointIndex++];
var point = path[pointIndex++];
nativePath.QuadTo((ox + controlPoint.X * ppux), (oy + controlPoint.Y * ppuy), (ox + point.X * ppux), (oy + point.Y * ppuy));
}
else if (type == PathOperation.Cubic)
{
var controlPoint1 = path[pointIndex++];
var controlPoint2 = path[pointIndex++];
var point = path[pointIndex++];
nativePath.CubicTo((ox + controlPoint1.X * ppux), (oy + controlPoint1.Y * ppuy), (ox + controlPoint2.X * ppux), (oy + controlPoint2.Y * ppuy), (ox + point.X * ppux),
(oy + point.Y * ppuy));
}
else if (type == PathOperation.Arc)
{
var topLeft = path[pointIndex++];
var bottomRight = path[pointIndex++];
var startAngle = path.GetArcAngle(arcAngleIndex++);
var endAngle = path.GetArcAngle(arcAngleIndex++);
var clockwise = path.GetArcClockwise(arcClockwiseIndex++);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var rect = new SKRect(topLeft.X, topLeft.Y, bottomRight.X, bottomRight.Y);
var sweep = Geometry.GetSweep(startAngle, endAngle, clockwise);
startAngle *= -1;
if (!clockwise)
{
sweep *= -1;
}
nativePath.AddArc(rect, startAngle, sweep);
}
else if (type == PathOperation.Close)
{
nativePath.Close();
}
}
return(nativePath);
}
public static SKPath AsSkiaPathFromSegment(this PathF target, int segmentIndex, float ppu, float zoom)
{
ppu = zoom * ppu;
var path = new SKPath();
var type = target.GetSegmentType(segmentIndex);
if (type == PathOperation.Line)
{
var pointIndex = target.GetSegmentPointIndex(segmentIndex);
var startPoint = target[pointIndex - 1];
path.MoveTo(startPoint.X * ppu, startPoint.Y * ppu);
var endPoint = target[pointIndex];
path.LineTo(endPoint.X * ppu, endPoint.Y * ppu);
}
else if (type == PathOperation.Quad)
{
var pointIndex = target.GetSegmentPointIndex(segmentIndex);
var startPoint = target[pointIndex - 1];
path.MoveTo(startPoint.X * ppu, startPoint.Y * ppu);
var controlPoint = target[pointIndex++];
var endPoint = target[pointIndex];
path.QuadTo(controlPoint.X * ppu, controlPoint.Y * ppu, endPoint.X * ppu, endPoint.Y * ppu);
}
else if (type == PathOperation.Cubic)
{
var pointIndex = target.GetSegmentPointIndex(segmentIndex);
var startPoint = target[pointIndex - 1];
path.MoveTo(startPoint.X * ppu, startPoint.Y * ppu);
var controlPoint1 = target[pointIndex++];
var controlPoint2 = target[pointIndex++];
var endPoint = target[pointIndex];
path.CubicTo(controlPoint1.X * ppu, controlPoint1.Y * ppu, controlPoint2.X * ppu, controlPoint2.Y * ppu, endPoint.X * ppu, endPoint.Y * ppu);
}
else if (type == PathOperation.Arc)
{
target.GetSegmentInfo(segmentIndex, out var pointIndex, out var arcAngleIndex, out var arcClockwiseIndex);
var topLeft = target[pointIndex++];
var bottomRight = target[pointIndex];
var startAngle = target.GetArcAngle(arcAngleIndex++);
var endAngle = target.GetArcAngle(arcAngleIndex);
var clockwise = target.GetArcClockwise(arcClockwiseIndex);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var rect = new SKRect(topLeft.X, topLeft.Y, bottomRight.X, bottomRight.Y);
var sweep = Geometry.GetSweep(startAngle, endAngle, clockwise);
startAngle *= -1;
if (!clockwise)
{
sweep *= -1;
}
path.AddArc(rect, startAngle, sweep);
}
return(path);
}
public static APath AsAndroidPath(this PathF path)
{
var nativePath = new APath();
int pointIndex = 0;
int arcAngleIndex = 0;
int arcClockwiseIndex = 0;
foreach (var operation in path.PathOperations)
{
if (operation == PathOperation.MoveTo)
{
var point = path[pointIndex++];
nativePath.MoveTo(point.X, point.Y);
}
else if (operation == PathOperation.Line)
{
var point = path[pointIndex++];
nativePath.LineTo(point.X, point.Y);
}
else if (operation == PathOperation.Quad)
{
var controlPoint = path[pointIndex++];
var point = path[pointIndex++];
nativePath.QuadTo(controlPoint.X, controlPoint.Y, point.X, point.Y);
}
else if (operation == PathOperation.Cubic)
{
var controlPoint1 = path[pointIndex++];
var controlPoint2 = path[pointIndex++];
var point = path[pointIndex++];
nativePath.CubicTo(controlPoint1.X, controlPoint1.Y, controlPoint2.X, controlPoint2.Y, point.X,
point.Y);
}
else if (operation == PathOperation.Arc)
{
var topLeft = path[pointIndex++];
var bottomRight = path[pointIndex++];
var startAngle = path.GetArcAngle(arcAngleIndex++);
var endAngle = path.GetArcAngle(arcAngleIndex++);
var clockwise = path.IsArcClockwise(arcClockwiseIndex++);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var rect = new RectF(topLeft.X, topLeft.Y, bottomRight.X, bottomRight.Y);
var sweep = GraphicsOperations.GetSweep(startAngle, endAngle, clockwise);
startAngle *= -1;
if (!clockwise)
{
sweep *= -1;
}
nativePath.ArcTo(rect, startAngle, sweep);
}
else if (operation == PathOperation.Close)
{
nativePath.Close();
}
}
return(nativePath);
}
public static Path AsAndroidPath(
this PathF path,
float offsetX = 0,
float offsetY = 0,
float scaleX = 1,
float scaleY = 1)
{
var nativePath = new Path();
int pointIndex = 0;
int arcAngleIndex = 0;
int arcClockwiseIndex = 0;
foreach (PathOperation vType in path.SegmentTypes)
{
if (vType == PathOperation.Move)
{
var point = path[pointIndex++];
nativePath.MoveTo(offsetX + point.X * scaleX, offsetY + point.Y * scaleY);
}
else if (vType == PathOperation.Line)
{
var point = path[pointIndex++];
nativePath.LineTo(offsetX + point.X * scaleX, offsetY + point.Y * scaleY);
}
else if (vType == PathOperation.Quad)
{
var controlPoint = path[pointIndex++];
var point = path[pointIndex++];
nativePath.QuadTo(offsetX + controlPoint.X * scaleX, offsetY + controlPoint.Y * scaleY, offsetX + point.X * scaleX, offsetY + point.Y * scaleY);
}
else if (vType == PathOperation.Cubic)
{
var controlPoint1 = path[pointIndex++];
var controlPoint2 = path[pointIndex++];
var point = path[pointIndex++];
nativePath.CubicTo(offsetX + controlPoint1.X * scaleX, offsetY + controlPoint1.Y * scaleY, offsetX + controlPoint2.X * scaleX, offsetY + controlPoint2.Y * scaleY, offsetX + point.X * scaleX,
offsetY + point.Y * scaleY);
}
else if (vType == PathOperation.Arc)
{
var topLeft = path[pointIndex++];
var bottomRight = path[pointIndex++];
var startAngle = path.GetArcAngle(arcAngleIndex++);
var endAngle = path.GetArcAngle(arcAngleIndex++);
var clockwise = path.GetArcClockwise(arcClockwiseIndex++);
while (startAngle < 0)
{
startAngle += 360;
}
while (endAngle < 0)
{
endAngle += 360;
}
var rect = new RectF(offsetX + topLeft.X * scaleX, offsetY + topLeft.Y * scaleY, offsetX + bottomRight.X * scaleX, offsetY + bottomRight.Y * scaleY);
var sweep = Geometry.GetSweep(startAngle, endAngle, clockwise);
startAngle *= -1;
if (!clockwise)
{
sweep *= -1;
}
nativePath.ArcTo(rect, startAngle, sweep);
}
else if (vType == PathOperation.Close)
{
nativePath.Close();
}
}
return(nativePath);
}
public static CGPath AsCGPath(
this PathF target,
float ox,
float oy,
float fx,
float fy)
{
var path = new CGPath();
int pointIndex = 0;
int arcAngleIndex = 0;
int arcClockwiseIndex = 0;
foreach (var type in target.SegmentTypes)
{
if (type == PathOperation.Move)
{
var point = target[pointIndex++];
path.MoveToPoint((ox + point.X * fx), (oy + point.Y * fy));
}
else if (type == PathOperation.Line)
{
var endPoint = target[pointIndex++];
path.AddLineToPoint((ox + endPoint.X * fx), (oy + endPoint.Y * fy));
}
else if (type == PathOperation.Quad)
{
var controlPoint = target[pointIndex++];
var endPoint = target[pointIndex++];
path.AddQuadCurveToPoint(
(ox + controlPoint.X * fx),
(oy + controlPoint.Y * fy),
(ox + endPoint.X * fx),
(oy + endPoint.Y * fy));
}
else if (type == PathOperation.Cubic)
{
var controlPoint1 = target[pointIndex++];
var controlPoint2 = target[pointIndex++];
var endPoint = target[pointIndex++];
path.AddCurveToPoint(
(ox + controlPoint1.X * fx),
(oy + controlPoint1.Y * fy),
(ox + controlPoint2.X * fx),
(oy + controlPoint2.Y * fy),
(ox + endPoint.X * fx),
(oy + endPoint.Y * fy));
}
else if (type == PathOperation.Arc)
{
var topLeft = target[pointIndex++];
var bottomRight = target[pointIndex++];
float startAngle = target.GetArcAngle(arcAngleIndex++);
float endAngle = target.GetArcAngle(arcAngleIndex++);
var clockwise = target.GetArcClockwise(arcClockwiseIndex++);
var startAngleInRadians = Geometry.DegreesToRadians(-startAngle);
var endAngleInRadians = Geometry.DegreesToRadians(-endAngle);
while (startAngleInRadians < 0)
{
startAngleInRadians += (float)Math.PI * 2;
}
while (endAngleInRadians < 0)
{
endAngleInRadians += (float)Math.PI * 2;
}
var cx = (bottomRight.X + topLeft.X) / 2;
var cy = (bottomRight.Y + topLeft.Y) / 2;
var width = bottomRight.X - topLeft.X;
var height = bottomRight.Y - topLeft.Y;
var r = width / 2;
var transform = CGAffineTransform.MakeTranslation(ox + cx, oy + cy);
transform = CGAffineTransform.Multiply(CGAffineTransform.MakeScale(1, height / width), transform);
path.AddArc(transform, 0, 0, r * fx, startAngleInRadians, endAngleInRadians, !clockwise);
}
else if (type == PathOperation.Close)
{
path.CloseSubpath();
}
}
return(path);
}
public static CGPath AsRotatedCGPath(this PathF target, PointF center, float ppu, float zoom, float angle)
{
ppu = ppu * zoom;
var path = new CGPath();
int pointIndex = 0;
int arcAngleIndex = 0;
int arcClockwiseIndex = 0;
foreach (var type in target.SegmentTypes)
{
if (type == PathOperation.Move)
{
var point = target.GetRotatedPoint(pointIndex++, center, angle);
path.MoveToPoint(point.X * ppu, point.Y * ppu);
}
else if (type == PathOperation.Line)
{
var endPoint = target.GetRotatedPoint(pointIndex++, center, angle);
path.AddLineToPoint(endPoint.X * ppu, endPoint.Y * ppu);
}
else if (type == PathOperation.Quad)
{
var controlPoint = target.GetRotatedPoint(pointIndex++, center, angle);
var endPoint = target.GetRotatedPoint(pointIndex++, center, angle);
path.AddQuadCurveToPoint(
controlPoint.X * ppu,
controlPoint.Y * ppu,
endPoint.X * ppu,
endPoint.Y * ppu);
}
else if (type == PathOperation.Cubic)
{
var controlPoint1 = target.GetRotatedPoint(pointIndex++, center, angle);
var controlPoint2 = target.GetRotatedPoint(pointIndex++, center, angle);
var endPoint = target.GetRotatedPoint(pointIndex++, center, angle);
path.AddCurveToPoint(
controlPoint1.X * ppu,
controlPoint1.Y * ppu,
controlPoint2.X * ppu,
controlPoint2.Y * ppu,
endPoint.X * ppu,
endPoint.Y * ppu);
}
else if (type == PathOperation.Arc)
{
var topLeft = target[pointIndex++];
var bottomRight = target[pointIndex++];
float startAngle = target.GetArcAngle(arcAngleIndex++);
float endAngle = target.GetArcAngle(arcAngleIndex++);
var clockwise = target.GetArcClockwise(arcClockwiseIndex++);
var startAngleInRadians = Geometry.DegreesToRadians(-startAngle);
var endAngleInRadians = Geometry.DegreesToRadians(-endAngle);
while (startAngleInRadians < 0)
{
startAngleInRadians += (float)Math.PI * 2;
}
while (endAngleInRadians < 0)
{
endAngleInRadians += (float)Math.PI * 2;
}
var cx = (bottomRight.X + topLeft.X) / 2;
var cy = (bottomRight.Y + topLeft.Y) / 2;
var width = bottomRight.X - topLeft.X;
var height = bottomRight.Y - topLeft.Y;
var r = width / 2;
var rotatedCenter = Geometry.RotatePoint(center, new PointF(cx, cy), angle);
var transform = CGAffineTransform.MakeTranslation(rotatedCenter.X * ppu, rotatedCenter.Y * ppu);
transform = CGAffineTransform.Multiply(CGAffineTransform.MakeScale(1, height / width), transform);
path.AddArc(transform, 0, 0, r * ppu, startAngleInRadians, endAngleInRadians, !clockwise);
}
else if (type == PathOperation.Close)
{
path.CloseSubpath();
}
}
return(path);
}
public static CGPath AsCGPathFromSegment(
this PathF target,
int segmentIndex,
float ppu,
float zoom)
{
ppu = ppu * zoom;
var path = new CGPath();
var type = target.GetSegmentType(segmentIndex);
if (type == PathOperation.Line)
{
var pointIndex = target.GetSegmentPointIndex(segmentIndex);
var startPoint = target[pointIndex - 1];
path.MoveToPoint(startPoint.X * ppu, startPoint.Y * ppu);
var endPoint = target[pointIndex];
path.AddLineToPoint(endPoint.X * ppu, endPoint.Y * ppu);
}
else if (type == PathOperation.Quad)
{
var pointIndex = target.GetSegmentPointIndex(segmentIndex);
var startPoint = target[pointIndex - 1];
path.MoveToPoint(startPoint.X * ppu, startPoint.Y * ppu);
var controlPoint = target[pointIndex++];
var endPoint = target[pointIndex];
path.AddQuadCurveToPoint(controlPoint.X * ppu, controlPoint.Y * ppu, endPoint.X * ppu, endPoint.Y * ppu);
}
else if (type == PathOperation.Cubic)
{
var pointIndex = target.GetSegmentPointIndex(segmentIndex);
var startPoint = target[pointIndex - 1];
path.MoveToPoint(startPoint.X * ppu, startPoint.Y * ppu);
var controlPoint1 = target[pointIndex++];
var controlPoint2 = target[pointIndex++];
var endPoint = target[pointIndex];
path.AddCurveToPoint(controlPoint1.X * ppu, controlPoint1.Y * ppu, controlPoint2.X * ppu, controlPoint2.Y * ppu, endPoint.X * ppu, endPoint.Y * ppu);
}
else if (type == PathOperation.Arc)
{
target.GetSegmentInfo(segmentIndex, out var pointIndex, out var arcAngleIndex, out var arcClockwiseIndex);
var topLeft = target[pointIndex++];
var bottomRight = target[pointIndex++];
var startAngle = target.GetArcAngle(arcAngleIndex++);
var endAngle = target.GetArcAngle(arcAngleIndex++);
var clockwise = target.GetArcClockwise(arcClockwiseIndex++);
var startAngleInRadians = Geometry.DegreesToRadians(-startAngle);
var endAngleInRadians = Geometry.DegreesToRadians(-endAngle);
while (startAngleInRadians < 0)
{
startAngleInRadians += (float)Math.PI * 2;
}
while (endAngleInRadians < 0)
{
endAngleInRadians += (float)Math.PI * 2;
}
var cx = (bottomRight.X + topLeft.X) / 2;
var cy = (bottomRight.Y + topLeft.Y) / 2;
var width = bottomRight.X - topLeft.X;
var height = bottomRight.Y - topLeft.Y;
var r = width / 2;
var transform = CGAffineTransform.MakeTranslation(cx * ppu, cy * ppu);
transform = CGAffineTransform.Multiply(CGAffineTransform.MakeScale(1, height / width), transform);
path.AddArc(transform, 0, 0, r * ppu, startAngleInRadians, endAngleInRadians, !clockwise);
}
return(path);
}
