/// <summary>
///
/// </summary>
/// <param name="shape"></param>
/// <param name="rect"></param>
/// <param name="selection"></param>
/// <param name="builder"></param>
/// <param name="treshold"></param>
/// <param name="dx"></param>
/// <param name="dy"></param>
/// <returns></returns>
private static bool HitTest(
BaseShape shape,
Rect2 rect,
Vector2[] selection,
ImmutableHashSet <BaseShape> .Builder builder,
double treshold,
double dx,
double dy)
{
if (shape is XPoint)
{
if (GetPointBounds(shape as XPoint, treshold, dx, dy).IntersectsWith(rect))
{
if (builder != null)
{
builder.Add(shape);
}
else
{
return(true);
}
}
return(false);
}
else if (shape is XLine)
{
var line = shape as XLine;
if (GetPointBounds(line.Start, treshold, dx, dy).IntersectsWith(rect) ||
GetPointBounds(line.End, treshold, dx, dy).IntersectsWith(rect) ||
MathHelpers.LineIntersectsWithRect(rect, new Point2(line.Start.X, line.Start.Y), new Point2(line.End.X, line.End.Y)))
{
if (builder != null)
{
builder.Add(line);
return(false);
}
else
{
return(true);
}
}
return(false);
}
else if (shape is XEllipse)
{
if (GetEllipseBounds(shape as XEllipse, dx, dy).IntersectsWith(rect))
{
if (builder != null)
{
builder.Add(shape);
return(false);
}
else
{
return(true);
}
}
return(false);
}
else if (shape is XRectangle)
{
if (GetRectangleBounds(shape as XRectangle, dx, dy).IntersectsWith(rect))
{
if (builder != null)
{
builder.Add(shape);
return(false);
}
else
{
return(true);
}
}
return(false);
}
else if (shape is XArc)
{
if (GetArcBounds(shape as XArc, dx, dy).IntersectsWith(rect))
{
if (builder != null)
{
builder.Add(shape);
return(false);
}
else
{
return(true);
}
}
return(false);
}
else if (shape is XBezier)
{
if (ConvexHullBounds.Overlap(selection, ConvexHullBounds.GetVertices(shape as XBezier, dx, dy)))
{
if (builder != null)
{
builder.Add(shape);
return(false);
}
else
{
return(true);
}
}
return(false);
}
else if (shape is XQBezier)
{
if (ConvexHullBounds.Overlap(selection, ConvexHullBounds.GetVertices(shape as XQBezier, dx, dy)))
{
if (builder != null)
{
builder.Add(shape);
return(false);
}
else
{
return(true);
}
}
return(false);
}
else if (shape is XText)
{
if (GetTextBounds(shape as XText, dx, dy).IntersectsWith(rect))
{
if (builder != null)
{
builder.Add(shape);
return(false);
}
else
{
return(true);
}
}
return(false);
}
else if (shape is XImage)
{
if (GetImageBounds(shape as XImage, dx, dy).IntersectsWith(rect))
{
if (builder != null)
{
builder.Add(shape);
return(false);
}
else
{
return(true);
}
}
return(false);
}
else if (shape is XPath)
{
if ((shape as XPath).Geometry != null)
{
var points = (shape as XPath).GetAllPoints();
if (ConvexHullBounds.Overlap(selection, ConvexHullBounds.GetVertices(points, dx, dy)))
{
if (builder != null)
{
builder.Add(shape);
return(false);
}
else
{
return(true);
}
}
}
return(false);
}
else if (shape is XGroup)
{
if (HitTest((shape as XGroup).Shapes.Reverse(), rect, selection, null, treshold, dx, dy) == true)
{
if (builder != null)
{
builder.Add(shape);
return(false);
}
else
{
return(true);
}
}
return(false);
}
return(false);
}
