void PolylineEditManipulantor_PreviewMouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
if ((System.Windows.Forms.Control.ModifierKeys & System.Windows.Forms.Keys.Control) == 0)
{
return;
}
if (_poly == null)
{
return;
}
var gridMan = ((Views.SchemaView)_view).GridManager;
for (int i = 0; i < _poly.Points.Count - 1; i++)
{
// Hit test
var lg = new LineGeometry(_poly.Points[i], _poly.Points[i + 1]);
var eg = new EllipseGeometry(gridMan.GetMousePos(), gridMan.GridDelta, gridMan.GridDelta);
var id = eg.FillContainsWithDetail(lg);
if (id == IntersectionDetail.Intersects)
{
// Insert point to the polyline
_poly.Points.Insert(i + 1, gridMan.GetMousePos());
// Rendering (new thumbs)
AddThumb(gridMan.GetMousePos());
e.Handled = true;
break;
}
}
InvalidateVisual();
}
private bool HitTestDrawing(GeometryDrawing drawing, Geometry geomDisplay, IntersectionDetail detail)
{
Pen pen = drawing.Pen;
Brush brush = drawing.Brush;
if (pen != null && brush == null)
{
if (drawing.Geometry.StrokeContainsWithDetail(pen, geomDisplay) == detail)
{
return(true);
}
Geometry geometry = drawing.Geometry;
LineGeometry line = null;
EllipseGeometry ellipse = null;
RectangleGeometry rectangle = null;
PathGeometry path = null;
if (TryCast.Cast(geometry, out path))
{
PathFigureCollection pathFigures = path.Figures;
int itemCount = pathFigures.Count;
if (itemCount == 1)
{
if (pathFigures[0].IsClosed && path.FillContainsWithDetail(geomDisplay) == detail)
{
return(true);
}
}
else
{
for (int f = 0; f < itemCount; f++)
{
PathFigure pathFigure = pathFigures[f];
if (pathFigure.IsClosed)
{
PathFigureCollection testFigures = new PathFigureCollection();
testFigures.Add(pathFigure);
PathGeometry testPath = new PathGeometry();
testPath.Figures = testFigures;
if (testPath.FillContainsWithDetail(geomDisplay) == detail)
{
return(true);
}
}
}
}
}
else if (TryCast.Cast(geometry, out line))
{
if (line.FillContainsWithDetail(geomDisplay) == detail)
{
return(true);
}
}
else if (TryCast.Cast(geometry, out ellipse))
{
if (ellipse.FillContainsWithDetail(geomDisplay) == detail)
{
return(true);
}
}
else if (TryCast.Cast(geometry, out rectangle))
{
if (rectangle.FillContainsWithDetail(geomDisplay) == detail)
{
return(true);
}
}
}
else if (brush != null && drawing.Geometry.FillContainsWithDetail(geomDisplay) == detail)
{
return(true);
}
return(false);
}
