/// <summary>
/// defines <see cref="aRadius"/> and <see cref="bRadius"/> by keeping the ratio of aRadius and bRadius.
/// The arc contains the point <b>Pt</b>.
/// </summary>
/// <param name="Pt">Point, which lies on the new arc.</param>
public void SetRadiusbyPoint(xy Pt)
{
xy _PT = Transformation.invert() * Pt;
double A = _PT.length();
Transformation = Matrix3x3.Scale(A, A) * Transformation;
Dirty = true;
}
static int Succ(int i)
{
xy V1 = new xy(0, 0);
int result = i + 1;
do
{
if (result == _Array1.Count)
{
result = 1;
}
V1 = _Array1[result] - _Array1[i];
if (V1.length() < LuckyEpsilon)
{
result++;
}
} while (V1.length() < LuckyEpsilon);
return(result);
}
static int Prev(int i)
{
xy V1 = new xy(0, 0);
int result = i - 1;
do
{
if (result < 0)
{
result = _Array1.Count - 2;
}
V1 = _Array1[result] - _Array1[i];
if (V1.length() < 0.001)
{
result--;
}
} while (V1.dist(xy.Null) < 0.000001);
return(result);
}
/// <summary>
/// This method calculates the distance to a point Pt.
/// The parameter Lam can be taken to calculate the nearest point of the LineType, which is
/// also returned by the outvalue Nearest
/// </summary>
/// <param name="Pt">Point to calculate the distance to the LineType</param>
/// <param name="Lam">Parameter to calculate the nearest point</param>
/// <param name="Nearest">The point on the line which has the smallest distance to Pt</param>
/// <returns>Returns the distance from the line to the point Pt</returns>
public double Distance(xy Pt, out double Lam, out xy Nearest)
{
Lam = Direction.normalize() * (Pt - P) / Direction.length();
Nearest = P + Direction * Lam;
return(Nearest.dist(Pt));
}
