/// <summary>
/// Calucalates a <see cref="CrossList"/> for this CurveArray with an other <see cref="Loca"/>.
/// The CrossItemparameter <see cref="CrossItem.Param1"/> is relative to this CurveArray.
/// <br/>
/// The parameter <see cref="CrossItem.Param2"/> relative to the "value"-Loca.
/// If (<see cref="CrossItem.Param2"/> greater Loca[0].Count the take id =<see cref="CrossItem.Param2"/> - Loca[0].count,
/// If (<see cref="CrossItem.Param2"/> greater Loca[1].Count the take id =<see cref="CrossItem.Param2"/> - Loca[1].count,
/// and so on.
/// </summary>
/// <param name="value">A Loca</param>
/// <param name="TangentialPoints">Respect curves, who are tangential an intersection.</param>
/// <returns>A CrossList</returns>
public CrossList getCrossList(Loca value, bool TangentialPoints)
{
CrossList Result = new CrossList();
int ct = 0;
for (int i = 0; i < value.Count; i++)
{
CrossList CL = getCrossList(value[i], TangentialPoints);
for (int j = 0; j < CL.Count; j++)
{
CrossItem CI = CL[j];
CI.Param2 = CI.Param2 + ct;
Result.Add(CI);
CI.CrossList = CL;
}
ct += value[i].Count;
}
return(Result);
}
/// <summary>
/// It`s the same as the overloaded method, but you can set, whether Tangential points
/// should be taken or not.
/// </summary>
/// <param name="value">An other CurveArray</param>
/// <param name="TangentialPoints">True, if the tangential points are taken</param>
/// <returns>A Crosslist</returns>
public CrossList getCrossList(CurveArray value, bool TangentialPoints)
{
ArrayList L1 = GetConnections();
ArrayList L2 = value.GetConnections();
int StartJ;
CrossList CL;
CrossList Result = new CrossList();
Result.AllowMultiCross = TangentialPoints;// for instant
int AIndex = 0;
for (int i = 0; i < L1.Count; i++)
{
CurveArray CA = (CurveArray)L1[i];
xyArray A = CA.getxyArray();
int BIndex = 0;
StartJ = 0;
for (int j = StartJ; j < L2.Count; j++)
{
CurveArray CB = (CurveArray)L2[j];
xyArray B = CB.getxyArray();
CL = A.getCrossList(B, TangentialPoints);
for (int k = 0; k < CL.Count; k++)
{
CrossItem CI = CL[k];
double aID = CA.xyArrayIndexToCurveArrayIndex(CI.Param1);
double bID = CB.xyArrayIndexToCurveArrayIndex(CI.Param2);
CI.Param1 = (float)AIndex + CA.xyArrayIndexToCurveArrayIndex(CI.Param1);
CI.Param2 = (float)BIndex + CB.xyArrayIndexToCurveArrayIndex(CI.Param2);
Curve C1 = CA[Utils.trunc(aID)];
Curve C2 = CB[Utils.trunc(bID)];
double Lam = CI.Param1 - Utils.trunc(CI.Param1);
double Mue = CI.Param2 - Utils.trunc(CI.Param2);
CI.Param1 = IndexOf(C1) + Lam;
CI.Param2 = value.IndexOf(C2) + Mue;
Mue = CI.Param2 - Utils.trunc(CI.Param2);
Lam = CI.Param1 - Utils.trunc(CI.Param1);
if (C1.Cross(C2, Lam, Mue, out Lam, out Mue))
{
if ((Lam < 0) && ((System.Math.Abs(Lam) < 0.000001)))
{
Lam = 0;
}
if (System.Math.Abs(Lam - 1) < 0.00001)
{
Lam = 0.999999;
}
CI.Param1 = Utils.trunc(CI.Param1) + Lam;
if ((Mue < 0) && ((System.Math.Abs(Mue) < 0.000001)))
{
Mue = 0;
}
if (System.Math.Abs(Mue - 1) < 0.00001)
{
Mue = 0.999999;
}
CI.Param2 = Utils.trunc(CI.Param2) + Mue;
}
else
{
Lam = 0;
if (C1.Equals(C2))
{
Lam = 1;
}
}
if ((Utils.trunc(CI.Param1) < 0) && (System.Math.Abs(CI.Param1) < 0.00001))
{
CI.Param1 = 0;
}
if ((Utils.trunc(CI.Param2) < 0) && (System.Math.Abs(CI.Param2) < 0.00001))
{
CI.Param2 = 0;
}
//if (((Utils.trunc(System.Math.Round(CI.Param1,3)) !=System.Math.Round(CI.Param1,3)))
// ||
// ((Utils.trunc(System.Math.Round(CI.Param1,3)) !=System.Math.Round(CI.Param1,3))))
Result.Add(CI);
}
BIndex += CB.Count;
}
AIndex += CA.Count;
}
return(Result);
}
static CrossList CrossWithLine(xy A, xy B, xyArray Array, EdgeLoop E)
{
CrossList Result = new CrossList();
double Lam = -1;
double Mue = -1;
_Array1 = Array;
xy Last = Array[Array.Count - 1];
for (int i = 0; i < Array.Count - 1; i++)
{
if (i < Array.Count - 1)
{
if (Array[i].dist(Array[i + 1]) < LuckyEpsilon)
{
continue;
}
}
int Nexti = Succ(i);
xy Next = Array[Nexti];
if (!(TwoLines(A, B, Array[i], Next, ref Lam, ref Mue)))
{
continue;
}
Lam = System.Math.Round(Lam, 8);
Mue = System.Math.Round(Mue, 8);
double D1 = Distance(Next, A, B);
double D2 = Distance(Array[i], A, B);
int Prv = Prev(i);
double D3 = Distance(Array[Prv], A, B);
if ((System.Math.Abs(D1) < EdgeTolerance) &&
(System.Math.Abs(D2) < EdgeTolerance))
{
Last = Array[i];
continue;
}
if ((System.Math.Abs(D1) >= EdgeTolerance) &&
(System.Math.Abs(D2) < EdgeTolerance))
{
if ((System.Math.Abs(D3) < EdgeTolerance))
{
CrossItem CI = new CrossItem(i + LuckyEpsilon, Lam, -1);// FromBorder
if (D1 > 0)
{
CI.CrossKind = 1;
}
else
{
CI.CrossKind = -1;
}
CI.Border1 = BorderBehavior.BorderEnd;
Result.Add(CI);
continue;
}
}
if ((System.Math.Abs(D1) < EdgeTolerance) &&
(System.Math.Abs(D2) >= EdgeTolerance))
{
int succ = Succ(Nexti);
double SuccDistance = System.Math.Abs(Distance(Array[succ], A, B));
if (SuccDistance <= EdgeTolerance)
{
// ToBorder
CrossItem CI = new CrossItem(i + (1 - LuckyEpsilon), Lam, -1);// ToBorder
CI.CrossKind = 1;
if (D2 < 0)
{
CI.CrossKind = 1;
}
else
{
CI.CrossKind = -1;
}
CI.Border1 = BorderBehavior.BorderBegin;
Result.Add(CI);
Last = Array[i];
}
continue;
}
if ((System.Math.Abs(D2) < EdgeTolerance) && (D1 * D3 < 0))
{
// Mue ==0 Durchgehend
int kk = ToSide;
if (D1 < 0)
{
kk = -ToSide;
}
CrossItem CI = new CrossItem(i - Mue - 0.000000001, Lam, -1);
CI.CrossKind = 1;
if (D1 < 0)
{
CI.CrossKind = -1;
}
Result.Add(CI);
Last = Array[i];
continue;
}
else
//else // neu------------------------------------------------------------
if ((System.Math.Abs(D2) < EdgeTolerance) && (D1 * D3 > 0))
{
if ((Mue >= -LuckyEpsilon) && ((Mue < 1 - LuckyEpsilon) &&
(Lam >= -LuckyEpsilon) && ((Lam <= 1 + LuckyEpsilon))))
{
xy v1 = Array[i] - Array[Prv];
xy v2 = Next - Array[i];
double kk = v1 & v2;
if (kk * D1 < 0)
{
}
//D1 = v1 & v2;
//D1 = -D1;
CrossItem CI = null; // new CrossItem(i + Mue, Lam, -1);// ToBorder
if (D1 > 0)
{
CI = new CrossItem(i + Mue - LuckyEpsilon, Lam + LuckyEpsilon, -1); // FromBorder
}
else
{
CI = new CrossItem(i + Mue - LuckyEpsilon, Lam - LuckyEpsilon, -1); // FromBorder
}
if (D1 < 0)
{
CI.CrossKind = 1;
}
else
{
CI.CrossKind = -1;
}
CI.Border1 = BorderBehavior.BorderBegin;
Result.Add(CI);
if (D1 < 0)
{
CI = new CrossItem(i + Mue + LuckyEpsilon, Lam + LuckyEpsilon, -1); // FromBorder
}
else
{
CI = new CrossItem(i + Mue + LuckyEpsilon, Lam - LuckyEpsilon, -1); // FromBorder
}
if (D1 > 0)
{
CI.CrossKind = 1;
}
else
{
CI.CrossKind = -1;
}
CI.Border1 = BorderBehavior.BorderEnd;
Result.Add(CI);
continue;
}
}
if (D1 * D2 < 0)
{
CrossItem CI = new CrossItem(i + Mue, Lam, -1);
CI.CrossKind = 1;
if (D1 < 0)
{
CI.CrossKind = -1;
}
Result.Add(CI);
Last = Array[i];
continue;
}
}
return(Result);
}