public static RoundData nullRoundData()
{
RoundData rd = new RoundData();
rd.IsNull = true;
return(rd);
}
public RoundData Copy()
{
if (nullCircle)
{
return(RoundData.nullRoundData());
}
else
{
return(new RoundData(DCenterX, DCenterY, DRadius));
}
}
/// <summary>
/// Determines whether the testing point is inside the circle.
/// </summary>
/// <param name="pt">The testing point.</param>
/// <param name="theCircle">The circle.</param>
/// <returns>System.Int32:
/// -1 => pt is outside the circle
/// 0 => pt is at the circle margin
/// 1 => pt is inside the circle
/// default (for empty circle data) is outside
/// </returns>
public static int IsPointInsideCircle(this PointD pt, RoundData theCircle, double marginDetectorPrecision = 2.0d)
{
if (theCircle.IsNull)
{
return(-1); // default is outside
}
if (PointD.Distance(pt, theCircle.pointDCircleCenter()) < theCircle.DRadius)
{
return(1);
}
if (Math.Abs(PointD.Distance(pt, theCircle.pointDCircleCenter()) - theCircle.DRadius) <= marginDetectorPrecision)
{
return(0);
}
return(-1);
}
public static bool isNull(RoundData rd)
{
return(rd.IsNull);
}