public override Base GetBase()
{
Base B = Base.UnitBase;
B.BaseO = Point;
int id = -1;
xyArray A = null;
LineType ViewLine = Device.FromScr(Device.MousePos);
xyz P = ModelMatrix * ViewLine.P;
xyz Q = ModelMatrix * ViewLine.Q;
ViewLine = new LineType(P, Q);
for (int i = 1; i < Loca.Count; i++)
{
A = Loca[i].getxyArray();
A = ModelMatrix * A;
double Dummy = -1;
double di = A.Distance(ViewLine, Snapdist * 8, out Lam, out Dummy);
if (di <= Snapdist)
{
id = i;
// break;
}
}
if (id >= 0)
{
if (id == 1)
{
}
if (Lam >= 0)
{
double L = Lam;
Lam = Loca[id].xyArrayIndexToCurveArrayIndex(Lam);
xyz D = Loca[id].Direction(Lam).toXYZ();
B = Base.DoComplete(A.Value(L).toXYZ(), D, new xyz(0, 0, 1) & D);
}
}
else
{
B = ModelMatrix.toBase();
B.BaseO = Point;
}
return(B);
}
protected internal override xyz Cross(LineType ViewLine)
{
double Dummy = -1;
double di = Poly.Distance(ViewLine, 2 * Snapdist, out Lam, out Dummy);
if (di <= 2 * Snapdist)
{
return(Poly.Value(Lam).toXYZ());
}
else
{
Lam = -1;
}
xyz Result = new xyz(0, 0, 0);
double LineLam = -1;
new Plane(new xyz(0, 0, 0), new xyz(0, 0, 1)).Cross(ViewLine, out LineLam, out Result);
return(Result);
}