| private FirstIntersectionWith ( Circle circle ) : Point? | ||
| circle | Circle | |
| return | Point? | |
private static Point Find(Ray ray, double strokeThickness, Ellipse ellipse)
{
var ip = ray.FirstIntersectionWith(ellipse);
if (ip != null)
{
return(ip.Value + strokeThickness * ray.Direction);
}
return(FindTangentPoint(ray, ellipse));
}
private static Point FindForRotated(Ray ray, double strokeThickness, Rect rectangle, CornerRadius cornerRadius)
{
var ip = ray.FirstIntersectionWith(rectangle);
if (ip == null)
{
return(FindTangentPoint(ray, rectangle, cornerRadius));
}
Circle corner;
if (TryGetCorner(ip.Value, rectangle, cornerRadius, out corner))
{
ip = ray.FirstIntersectionWith(corner);
if (ip == null)
{
return(FindTangentPoint(ray, rectangle, cornerRadius));
}
return(ip.Value + strokeThickness * ray.Direction);
}
return(ip.Value + strokeThickness * ray.Direction);
}
protected override Geometry GetOrCreateConnectorGeometry(Size renderSize)
{
var rectangle = new Rect(new Point(0, 0), renderSize);
if (rectangle.Width <= 0 || rectangle.Height <= 0)
{
return(Geometry.Empty);
}
var fromCenter = new Ray(rectangle.CenterPoint(), this.ConnectorOffset);
var ip = fromCenter.FirstIntersectionWith(rectangle);
if (ip == null)
{
Debug.Assert(false, $"Line {fromCenter} does not intersect rectangle {rectangle}");
// ReSharper disable once HeuristicUnreachableCode
return(Geometry.Empty);
}
var cr = this.AdjustedCornerRadius();
var vertexPoint = ip.Value + this.ConnectorOffset;
var toCenter = new Ray(vertexPoint, this.ConnectorOffset.Negated());
var p1 = ConnectorPoint.Find(toCenter, this.ConnectorAngle / 2, this.StrokeThickness, rectangle, cr);
var p2 = ConnectorPoint.Find(toCenter, -this.ConnectorAngle / 2, this.StrokeThickness, rectangle, cr);
this.SetValue(ConnectorVertexPointProperty, vertexPoint);
this.SetValue(ConnectorPoint1Property, p1);
this.SetValue(ConnectorPoint2Property, p2);
if (this.ConnectorGeometry is PathGeometry)
{
return(this.ConnectorGeometry);
}
var figure = this.CreatePathFigureStartingAt(ConnectorPoint1Property);
figure.Segments.Add(this.CreateLineSegmentTo(ConnectorVertexPointProperty));
figure.Segments.Add(this.CreateLineSegmentTo(ConnectorPoint2Property));
var geometry = new PathGeometry();
geometry.Figures.Add(figure);
return(geometry);
}
private static Point Find(Ray ray, double strokeThickness, Ellipse ellipse)
{
var ip = ray.FirstIntersectionWith(ellipse);
if (ip != null)
{
return ip.Value + strokeThickness * ray.Direction;
}
return FindTangentPoint(ray, ellipse);
}
protected override Geometry GetOrCreateConnectorGeometry(Size renderSize)
{
var rectangle = new Rect(new Point(0, 0), renderSize);
if (rectangle.Width <= 0 || rectangle.Height <= 0)
{
return Geometry.Empty;
}
var fromCenter = new Ray(rectangle.CenterPoint(), this.ConnectorOffset);
var ip = fromCenter.FirstIntersectionWith(rectangle);
if (ip == null)
{
Debug.Assert(false, $"Line {fromCenter} does not intersect rectangle {rectangle}");
// ReSharper disable once HeuristicUnreachableCode
return Geometry.Empty;
}
var cr = this.AdjustedCornerRadius();
var vertexPoint = ip.Value + this.ConnectorOffset;
var toCenter = new Ray(vertexPoint, this.ConnectorOffset.Negated());
var p1 = ConnectorPoint.Find(toCenter, this.ConnectorAngle / 2, this.StrokeThickness, rectangle, cr);
var p2 = ConnectorPoint.Find(toCenter, -this.ConnectorAngle / 2, this.StrokeThickness, rectangle, cr);
this.SetCurrentValue(ConnectorVertexPointProperty, vertexPoint);
this.SetCurrentValue(ConnectorPoint1Property, p1);
this.SetCurrentValue(ConnectorPoint2Property, p2);
if (this.ConnectorGeometry is PathGeometry)
{
return this.ConnectorGeometry;
}
var figure = this.CreatePathFigureStartingAt(ConnectorPoint1Property);
figure.Segments.Add(this.CreateLineSegmentTo(ConnectorVertexPointProperty));
figure.Segments.Add(this.CreateLineSegmentTo(ConnectorPoint2Property));
var geometry = new PathGeometry();
geometry.Figures.Add(figure);
return geometry;
}
private static Point FindForRotated(Ray ray, double strokeThickness, Rect rectangle, CornerRadius cornerRadius)
{
var ip = ray.FirstIntersectionWith(rectangle);
if (ip == null)
{
return FindTangentPoint(ray, rectangle, cornerRadius);
}
Circle corner;
if (TryGetCorner(ip.Value, rectangle, cornerRadius, out corner))
{
ip = ray.FirstIntersectionWith(corner);
if (ip == null)
{
return FindTangentPoint(ray, rectangle, cornerRadius);
}
return ip.Value + strokeThickness * ray.Direction;
}
return ip.Value + strokeThickness * ray.Direction;
}