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);
}
void IntersectPlaneWithLine(SnapItem Plane, SnapItem Line, LineType ViewLine)
{
double Lam = -1;
xyz Result = new xyz(0, 0, 0);
if (intersectPlaneWithLine(Plane, Line, Line.getxyzArray(), ref Lam, ref Result))
{
if (Result.dist(Plane.Point) <= SnapItem.Snapdist)
{
Plane.Point = Result;
Line.Point = Plane.Point;
Line.Crossed = true;
Plane.Crossed = true;
}
}
}
bool IntersectLineWithLine(SnapItem Line1, SnapItem Line2, LineType ViewLine)
{
xyzArray A = Line1.getxyzArray();
int h = A.Count;
xyzArray B = Line2.getxyzArray();
double d1 = 1e10;
int i1 = -1;
double d2 = 1e10;
int i2 = -1;
for (int i = 0; i < A.Count; i++)
{
double d = Line1.Point.dist(A[i]);
if (d < d1)
{
d1 = d;
i1 = i;
}
}
for (int i = 0; i < B.Count; i++)
{
double d = Line1.Point.dist(B[i]);
if (d < d2)
{
d2 = d;
i2 = i;
}
}
if ((A == null) || (B == null))
{
return(false);
}
xyz CrossPoint = new xyz(0, 0, 0);
if (IntersectLines(A, B, Line1.Point, ref CrossPoint))
{
Line1.Point = CrossPoint;
Line2.Point = CrossPoint;
Line1.Crossed = true;
Line2.Crossed = true;
return(true);
}
return(false);
}
public bool IntersectPlaneWithPlane(SnapItem Plane1, SnapItem Plane2, LineType ViewLine)
{
int Object1 = StoredSnapItems.IndexOf(Plane1);
int Object2 = StoredSnapItems.IndexOf(Plane2);
int siz = 2 * SnapDistance + 1;
PrimIdObj[,] P = SubArray(Device.MousePos.X - siz / 2, (int)Device.ViewPort.Height - Device.MousePos.Y - siz / 2, siz, siz);
ListOfTriangles1 = GetTriangles(P, Object1);
ListOfTriangles1.Clear();
Matrix M = Plane1.ModelMatrix;
for (int i = 0; i < Plane1.TriangleInfo.Indices.Length; i++)
{
TriangleInfo TI = Plane1.TriangleInfo;
TriangleF T = new TriangleF(M * TI.Points[TI.Indices[i]], M * TI.Points[TI.Indices[i + 1]], M * TI.Points[TI.Indices[i + 2]]);
i = i + 2;
// if (T.Inside(ViewLine.P.toXYZF()))
ListOfTriangles1.Add(T);
}
for (int i = 0; i < ListOfTriangles1.Count; i++)
{
if (ListOfTriangles1[i].Inside(ViewLine.P.toXYZF()))
{
TriangleF F = ListOfTriangles1[i];
ListOfTriangles1.RemoveAt(i);
ListOfTriangles1.Insert(0, F);
}
}
ListOfTriangles2 = GetTriangles(P, Object2);
ListOfTriangles2.Clear();
M = Plane2.ModelMatrix;
for (int i = 0; i < Plane2.TriangleInfo.Indices.Length; i++)
{
TriangleInfo TI = Plane2.TriangleInfo;
TriangleF T = new TriangleF(M * TI.Points[TI.Indices[i]], M * TI.Points[TI.Indices[i + 1]], M * TI.Points[TI.Indices[i + 2]]);
i = i + 2;
// if (T.Inside(ViewLine.P.toXYZF()))
ListOfTriangles2.Add(T);
}
for (int i = 0; i < ListOfTriangles2.Count; i++)
{
if (ListOfTriangles2[i].Inside(ViewLine.P.toXYZF()))
{
TriangleF F = ListOfTriangles2[i];
ListOfTriangles2.RemoveAt(i);
ListOfTriangles2.Insert(0, F);
}
}
List <Line3D> Lines = Cross(ListOfTriangles1, ListOfTriangles2, ViewLine);
xyz P1 = new xyz(0, 0, 0);
xyz P2 = new xyz(0, 0, 0);
if (Lines.Count < 2)
{
double Lam = -1;
double Mue = -1;
List <TriangleF> L1 = new List <TriangleF>();
List <TriangleF> L2 = new List <TriangleF>();
for (int i = 0; i < ListOfTriangles1.Count; i++)
{
if (ListOfTriangles1[i].Inside(ViewLine.P.toXYZF()))
{
L1.Add(ListOfTriangles1[i]);
}
}
for (int i = 0; i < ListOfTriangles2.Count; i++)
{
if (ListOfTriangles2[i].Inside(ViewLine.P.toXYZF()))
{
L2.Add(ListOfTriangles2[i]);
}
}
L1 = ListOfTriangles1;
L2 = ListOfTriangles2;
for (int i = 0; i < L1.Count; i++)
{
for (int j = 0; j < L2.Count; j++)
{
if (TriangleF.Cross(L1[i], L2[j], out Lam, out Mue, out P1, out P2))
{
int _lam = (int)Lam;
switch (_lam)
{
case 0:
Lines.Add(new Line3D(L1[i].A.Toxyz(), L1[i].B.Toxyz()));
break;
case 1:
Lines.Add(new Line3D(L1[i].B.Toxyz(), L1[i].C.Toxyz()));
break;
case 2:
Lines.Add(new Line3D(L1[i].C.Toxyz(), L1[i].A.Toxyz()));
break;
default:
break;
}
int _mue = (int)Mue;
switch (_mue)
{
case 0:
Lines.Add(new Line3D(L2[j].A.Toxyz(), L2[j].B.Toxyz()));
break;
case 1:
Lines.Add(new Line3D(L2[j].B.Toxyz(), L2[j].C.Toxyz()));
break;
case 2:
Lines.Add(new Line3D(L2[j].C.Toxyz(), L2[j].A.Toxyz()));
break;
default:
break;
}
}
break;
}
}
//if (TriangleF.Cross(ListOfTriangles1[0], ListOfTriangles2[0], out Lam, out Mue, out P1, out P2))
//{
// int _lam = (int)Lam;
// switch (_lam)
// {case 0: Lines.Add(new Line3D(ListOfTriangles1[0].A.Toxyz(),ListOfTriangles1[0].B.Toxyz()));
// break;
// case 1: Lines.Add(new Line3D(ListOfTriangles1[0].B.Toxyz(), ListOfTriangles1[0].C.Toxyz()));
// break;
// case 2: Lines.Add(new Line3D(ListOfTriangles1[0].C.Toxyz(), ListOfTriangles1[0].A.Toxyz()));
// break;
// default:
// break;
// }
// int _mue = (int)Mue;
// switch (_mue)
// {
// case 0:
// Lines.Add(new Line3D(ListOfTriangles2[0].A.Toxyz(), ListOfTriangles2[0].B.Toxyz()));
// break;
// case 1: Lines.Add(new Line3D(ListOfTriangles2[0].B.Toxyz(), ListOfTriangles2[0].C.Toxyz()));
// break;
// case 2: Lines.Add(new Line3D(ListOfTriangles2[0].C.Toxyz(), ListOfTriangles2[0].A.Toxyz()));
// break;
// default:
// break;
// }
//}
}
double di = 1e10;
xyz Pos = new xyz(0, 0, 0);
int Id = -1;
for (int i = 0; i < Lines.Count; i++)
{
LineType L = new LineType(Lines[i].A, Lines[i].B - Lines[i].A);
double Lam = -1;
double d = ViewLine.Distance(L, SnapItem.Snapdist, false, false, out Lam);
xyz Nearest = L.Value(Lam);
if ((Lam >= -0.00001) && (Lam <= 1.00001))
{
if (d < di)
{
Pos = Nearest;
di = d;
Id = i;
}
}
}
if ((di < 1e10) && (di <= SnapItem.Snapdist))
{
Plane1.Crossed = true;
Plane1.Point = Pos;
Plane2.Crossed = true;
Plane2.Point = Pos;
return(true);
}
xyzArray A = Plane1.getxyzArray();
xyzArray B = Plane2.getxyzArray();
if ((A != null) && (B != null))
{
return(IntersectLineWithLine(Plane1, Plane2, ViewLine));
}
return(false);
}