/// <summary>
/// Test whether object intersects with rectangle
/// </summary>
public override bool IntersectsWith(Rect rectangle)
{
RectangleGeometry rg = new RectangleGeometry(rectangle);
LineGeometry lg = new LineGeometry(lineStart, lineEnd);
PathGeometry widen = lg.GetWidenedPathGeometry(new Pen(Brushes.Black, LineHitTestWidth));
PathGeometry p = Geometry.Combine(rg, widen, GeometryCombineMode.Intersect, null);
return (!p.IsEmpty());
}
protected void CheckResizeLines(Point cursorPt)
{
// Determine if the cursor is over a line for resizing
ResizeTopLine = new LineGeometry(_FocusedAnnotation.Marking.Rect.TopLeft, _FocusedAnnotation.Marking.Rect.TopRight);
ResizeLeftLine = new LineGeometry(_FocusedAnnotation.Marking.Rect.TopLeft, _FocusedAnnotation.Marking.Rect.BottomLeft);
ResizeBottomLine = new LineGeometry(_FocusedAnnotation.Marking.Rect.BottomLeft, _FocusedAnnotation.Marking.Rect.BottomRight);
ResizeRightLine = new LineGeometry(_FocusedAnnotation.Marking.Rect.TopRight, _FocusedAnnotation.Marking.Rect.BottomRight);
if (ResizeBottomLine.GetWidenedPathGeometry(_FocusedAnnotation.Pen).StrokeContains(_FocusedAnnotation.Pen, cursorPt))
{
this.Cursor = System.Windows.Input.Cursors.SizeNS;
ResizeTopLine = null;
}
else if (ResizeTopLine.GetWidenedPathGeometry(_FocusedAnnotation.Pen).StrokeContains(_FocusedAnnotation.Pen, cursorPt))
{
this.Cursor = System.Windows.Input.Cursors.SizeNS;
ResizeBottomLine = null;
}
else
{
ResizeBottomLine = null;
ResizeTopLine = null;
}
if (ResizeRightLine.GetWidenedPathGeometry(_FocusedAnnotation.Pen).StrokeContains(_FocusedAnnotation.Pen, cursorPt))
{
if (ResizeBottomLine != null)
{
this.Cursor = System.Windows.Input.Cursors.SizeNWSE;
}
else if (ResizeTopLine != null)
{
this.Cursor = System.Windows.Input.Cursors.SizeNESW;
}
else
{
this.Cursor = System.Windows.Input.Cursors.SizeWE;
}
ResizeLeftLine = null;
}
else if (ResizeLeftLine.GetWidenedPathGeometry(_FocusedAnnotation.Pen).StrokeContains(_FocusedAnnotation.Pen, cursorPt))
{
if (ResizeBottomLine != null)
{
this.Cursor = System.Windows.Input.Cursors.SizeNESW;
}
else if (ResizeTopLine != null)
{
this.Cursor = System.Windows.Input.Cursors.SizeNWSE;
}
else
{
this.Cursor = System.Windows.Input.Cursors.SizeWE;
}
ResizeRightLine = null;
}
else
{
ResizeRightLine = null;
ResizeLeftLine = null;
}
}