private PathGeometry BuildPolarStripe(RadPolarVector vector, RadPolarVector nextVector, bool isLargeArc)
{
RadPoint center = this.model.layoutSlot.Center;
double radius = this.model.layoutSlot.Width / 2;
double endAngle = nextVector.Angle;
if (endAngle == 360)
{
endAngle = 0;
}
RadPoint arcEndPoint = RadMath.GetArcPoint(endAngle, center, radius);
PathGeometry geometry = new PathGeometry();
PathFigure figure = new PathFigure();
figure.IsClosed = true;
figure.IsFilled = true;
figure.StartPoint = new Point(vector.Center.X, vector.Center.Y);
// first line
figure.Segments.Add(new LineSegment()
{
Point = new Point(vector.Point.X, vector.Point.Y)
});
// arc
ArcSegment arc = new ArcSegment();
arc.SweepDirection = (this.Chart as RadPolarChart).RadialAxis.SweepDirection;
arc.Size = new Size(radius, radius);
arc.IsLargeArc = isLargeArc;
arc.Point = new Point(arcEndPoint.X, arcEndPoint.Y);
figure.Segments.Add(arc);
// second line
figure.Segments.Add(new LineSegment()
{
Point = new Point(nextVector.Point.X, nextVector.Point.Y)
});
geometry.Figures.Add(figure);
return(geometry);
}
internal override void UpdatePresenters()
{
RadPolarVector vector1 = this.model.polarVector1;
RadPolarVector vector2 = this.model.polarVector2;
bool isLargeArc;
if (vector1.Angle > vector2.Angle)
{
isLargeArc = vector1.Angle - vector2.Angle > 180d;
}
else
{
isLargeArc = (vector1.Angle + 360) - vector2.Angle > 180d;
}
if (this.model.Axis.IsInverse)
{
this.presenter.Data = this.BuildPolarStripe(vector1, vector2, !isLargeArc);
}
else
{
this.presenter.Data = this.BuildPolarStripe(vector2, vector1, isLargeArc);
}
}
private PathGeometry BuildPolarStripe(RadPolarVector vector, RadPolarVector nextVector, bool isLargeArc)
{
double radius = this.model.radius;
Point center = new Point(vector.Center.X, vector.Center.Y);
PathGeometry geometry = new PathGeometry();
PathFigure figure = new PathFigure();
figure.IsClosed = true;
figure.IsFilled = true;
figure.StartPoint = center;
// first line
LineSegment line1 = new LineSegment();
line1.Point = new Point(vector.Point.X, vector.Point.Y);
figure.Segments.Add(line1);
// arc
ArcSegment arc = new ArcSegment();
arc.SweepDirection = SweepDirection.Clockwise;
arc.Size = new Size(radius, radius);
arc.IsLargeArc = isLargeArc;
arc.Point = new Point(nextVector.Point.X, nextVector.Point.Y);
figure.Segments.Add(arc);
// second line
var line2 = new LineSegment();
line2.Point = center;
figure.Segments.Add(line2);
geometry.Figures.Add(figure);
return(geometry);
}
