bool intersectPlaneWithLine(SnapItem Plane, SnapItem Line, xyzArray LineArray, ref double Lam, ref xyz Result)
{
TriangleF T = Plane.GetTriangle();
if (T == null)
{
return(false);
}
xyz N1 = ((T.B - T.A) & (T.C - T.A)).Toxyz();
if (LineArray == null)
{
}
xyz N2 = LineArray.cross();
if ((N1 & N2).length() < 0.00001) // Parallel
{
xyzArray A = Plane.getxyzArray();
if (A != null)
{
xyzArray B = LineArray;
List <CrossTag1> L = CrossTag1.GetCrossList(A, B);
for (int i = 0; i < L.Count; i++)
{
if (A.Value(L[i].Lam1).dist(Plane.Point) <= SnapItem.Snapdist)
{
Lam = L[i].Lam1;
Result = A.Value(L[i].Lam1);
return(true);
}
}
}
}
int Object = StoredSnapItems.IndexOf(Plane);
int siz = SnapDistance * 2 + 1;
// int siz = SnapDistance;
Drawing3d.PrimIdObj[,] P = SubArray(Device.MousePos.X - siz / 2, (int)Device.ViewPort.Height - Device.MousePos.Y - siz / 2, siz, siz);
List <TriangleF> LT = GetTriangles(P, Object);
Lam = -1;
bool R = Cross(LT, LineArray, ref Lam, ref Result);
return(R);
}
public override Base GetBase()
{
Base B = ModelMatrix.toBase();;
B.BaseO = Point;
int id = -1;
for (int i = 0; i < PolyPoly.Count; i++)
{
xyArray A = PolyPoly[i];
LineType ViewLine = Device.FromScr(Device.MousePos);
double Dummy = -1;
double di = A.Distance(ViewLine, 2 * Snapdist, out Lam, out Dummy);
if (di <= 2 * Snapdist)
{
id = i;
break;
}
}
if (id >= 0)
{
xyzArray A = ModelMatrix * PolyPoly[id].ToxyzArray();
if (Lam >= 0)
{
xyz D = ModelMatrix * PolyPoly[id].Direction(Lam).toXYZ() - ModelMatrix * new xyz(0, 0, 0);
B = Base.DoComplete(Point, D, new xyz(0, 0, 1) & D);
}
}
else
{
xyzArray A = ModelMatrix * PolyPoly[0].ToxyzArray();
xyz D = A.cross();
B = Base.DoComplete(Point, D, new xyz(0, 0, 1) & D);
}
return(B);
}