public ViewRectangle GetIntersection(ViewRectangle rectangleA, ViewRectangle rectangleB)
{
Rectangle firstRectangle = rectangleA.ConvertToRectangle();
Rectangle secondRectangle = rectangleB.ConvertToRectangle();
return(new ViewRectangle(firstRectangle.GetIntersection(secondRectangle)));
}
public bool TestContain(ViewRectangle rectangleA, ViewRectangle rectangleB)
{
Rectangle firstRectangle = rectangleA.ConvertToRectangle();
Rectangle secondRectangle = rectangleB.ConvertToRectangle();
return(firstRectangle.Contains(secondRectangle));
}
public int ViewPointToItemIndex(Point viewPt)
{
if (!ViewRectangle.Contains(viewPt))
{
return(-1);
}
Size itemSize = ItemSize;
int index = viewPt.X / itemSize.Width;
return(index);
}
public ViewRectangle GetContained(ViewRectangle rectangleA, ViewRectangle rectangleB)
{
Rectangle firstRectangle = rectangleA.ConvertToRectangle();
Rectangle secondRectangle = rectangleB.ConvertToRectangle();
if (firstRectangle.Contains(secondRectangle))
{
return(rectangleB);
}
return(new ViewRectangle(null));
}
private void AddRectangle(double startX, double startY, double width, double height)
{
ViewRectangle viewRectangle = new ViewRectangle(startX, startY, width, height);
DataContext.Rectangles.Add(viewRectangle);
_notFirstRectangle = true;
Rectangle rect = new Rectangle {
Width = width, Height = width, Stroke = Brushes.Black
};
RectCanvas.Children.Add(rect);
Canvas.SetLeft(rect, startX);
Canvas.SetTop(rect, startY);
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
MouseDownButton = e.Button;
if (e.Button == MouseButtons.Left)
{
TempViewRectangle = ViewRectangle;
Capture = true;
MouseDownPoint = new Point(e.X, e.Y);
if (!ViewRectangle.Contains(e.X, e.Y))
{
int x = Math.Min(FullRectangle.X + FullRectangle.Width - ViewRectangle.Width,
Math.Max(FullRectangle.X, (e.X - ViewRectangle.Width / 2)));
int y = Math.Min(FullRectangle.Y + FullRectangle.Height - ViewRectangle.Height,
Math.Max(FullRectangle.Y, (e.Y - ViewRectangle.Height / 2)));
SetViewRectangle(new Rectangle(x, y, ViewRectangle.Width, ViewRectangle.Height));
}
MouseDownViewRectangle = ViewRectangle;
}
}
private void CheckContainment_Click(object sender, RoutedEventArgs e)
{
List <ViewRectangle> containedAreas = new List <ViewRectangle>();
// Go through all of the rectangles on the page, compare them to each other for intersection
for (int i = 0; i < DataContext.Rectangles.Count; i++)
{
for (int j = 0; j < DataContext.Rectangles.Count; j++)
{
if (i != j)
{
ViewRectangle area = DataContext.GetContained(DataContext.Rectangles[i], DataContext.Rectangles[j]);
if (area.Equals(null))
{
continue;
}
containedAreas.Add(area);
}
}
}
ColorIntersectingRectangles(containedAreas);
}
