public void CreateComparerFromDelegate()
{
var source = new List <int> {
1, 2, 3, 0, 4, 5, 6, 7
};
var comparer = ComparerHelper.CreateComparer <int>(
(x, y) =>
{
if (x == 0)
{
return(y == 0 ? 0 : -1);
}
if (y == 0)
{
return(1);
}
return(y.CompareTo(x));
});
var sorted = source.OrderBy(x => x, comparer).ToList();
var expected = new List <int> {
0, 7, 6, 5, 4, 3, 2, 1
};
CollectionAssert.AreEqual(expected, sorted);
}
/// <summary>
/// Find the index of a rectangle that contains the specified point.
/// </summary>
/// <param name="point">the target point</param>
/// <returns>the rectangle index</returns>
private int FindRectangleIndex(ScreenPoint point)
{
IComparer <OxyRect> comparer;
if (this.IsTransposed())
{
comparer = ComparerHelper.CreateComparer <OxyRect>(
(x, y) =>
{
if (x.Bottom < point.Y)
{
return(1);
}
if (x.Top > point.Y)
{
return(-1);
}
return(0);
});
}
else
{
comparer = ComparerHelper.CreateComparer <OxyRect>(
(x, y) =>
{
if (x.Right < point.X)
{
return(-1);
}
if (x.Left > point.X)
{
return(1);
}
return(0);
});
}
return(this.rectangles.BinarySearch(0, this.rectangles.Count, new OxyRect(), comparer));
}
/// <summary>
/// Find the index of a rectangle that contains the specified point.
/// </summary>
/// <param name="point">the target point</param>
/// <returns>the rectangle index</returns>
private int FindRectangleIndex(ScreenPoint point)
{
var comparer = ComparerHelper.CreateComparer <OxyRect>(
(x, y) =>
{
if (x.Right < point.X)
{
return(-1);
}
if (x.Left > point.X)
{
return(1);
}
return(0);
});
return(this.rectangles.BinarySearch(0, this.rectangles.Count, new OxyRect(), comparer));
}