/// <summary>
/// Initializes a new instance of the <see cref="Extent"/> class that
/// corresponds to a window (where the coverage is expressed using floating
/// point values).
/// </summary>
/// <param name="extent">The covering rectangle (expressed using floating
/// point values)</param>
internal Extent(IWindow extent)
{
m_X = new RangeValue(Dimension.X,
Length.ToMicrons(extent.Min.X),
Length.ToMicrons(extent.Max.X));
m_Y = new RangeValue(Dimension.Y,
Length.ToMicrons(extent.Min.Y),
Length.ToMicrons(extent.Max.Y));
}
/// <summary>
/// Checks whether a pair of ranges overlap
/// </summary>
/// <param name="that">The range to compare with this one</param>
/// <returns>True if the ranges refer to the same positional dimension and they overlap or touch.
/// False if they refer to different dimensions, or they don't overlap.
/// </returns>
internal bool IsOverlap(RangeValue that)
{
if (this.m_Dimension != that.m_Dimension)
{
return(false);
}
// The "range" may actually be a point
if (that.m_Min == that.m_Max)
{
return(this.m_Min <= that.m_Min && that.m_Max <= this.m_Max);
}
return(Math.Max(this.m_Min, that.m_Min) <= Math.Min(this.m_Max, that.m_Max));
}
/// <summary>
/// Initializes a new instance of the <see cref="Extent"/> class.
/// </summary>
/// <param name="minx">The western edge, in microns</param>
/// <param name="miny">The southern edge, in microns</param>
/// <param name="maxx">The eastern edge, in microns</param>
/// <param name="maxy">The northern edge, in microns</param>
internal Extent(ulong minx, ulong miny, ulong maxx, ulong maxy)
{
m_X = new RangeValue(Dimension.X, minx, maxx);
m_Y = new RangeValue(Dimension.Y, miny, maxy);
}
/// <summary>
/// Checks whether this window overlaps a positional range
/// </summary>
/// <param name="r">The range to examine</param>
/// <returns>True if range overlaps this window.
/// False if there's no overlap (or range only touches)</returns>
internal bool IsOverlap(RangeValue r)
{
return(m_X.IsOverlap(r) || m_Y.IsOverlap(r));
}
/// <summary>
/// Checks whether a pair of ranges overlap
/// </summary>
/// <param name="that">The range to compare with this one</param>
/// <returns>True if the ranges refer to the same positional dimension and they overlap or touch.
/// False if they refer to different dimensions, or they don't overlap.
/// </returns>
internal bool IsOverlap(RangeValue that)
{
if (this.m_Dimension!=that.m_Dimension)
return false;
// The "range" may actually be a point
if (that.m_Min==that.m_Max)
return (this.m_Min<=that.m_Min && that.m_Max<=this.m_Max);
return (Math.Max(this.m_Min, that.m_Min) <= Math.Min(this.m_Max, that.m_Max));
}
