Please help me, wrong located shapes.

Take a look at this code. Its working quite nice and as you can see we get the orientation directly from the topoface and afterwards apply the transformation again on the resulting mesh.

for (aExpFace.Init(aShape,TopAbs_FACE);aExpFace.More();aExpFace.Next())
{
TopoDS_Face aFace = TopoDS::Face(aExpFace.Current());
TopLoc_Location aLocation;
// takes the triangulation of the face aFace:
Handle_Poly_Triangulation aTr = BRep_Tool::Triangulation(aFace,aLocation);
if (!aTr.IsNull()) // if this triangulation is not NULL
{
// takes the array of nodes for this triangulation:
const TColgp_Array1OfPnt& aNodes = aTr->Nodes();
// takes the array of triangles for this triangulation:
const Poly_Array1OfTriangle& triangles = aTr->Triangles();
// create array of node points in absolute coordinate system
TColgp_Array1OfPnt aPoints(1, aNodes.Length());
for ( Standard_Integer i = 1; i < aNodes.Length()+1; i++)
aPoints(i) = aNodes(i).Transformed(aLocation);
// Takes the node points of each triangle of this triangulation.
// takes a number of triangles:
Standard_Integer nnn = aTr->NbTriangles();
Standard_Integer nt,n1,n2,n3;
for ( nt = 1 ; nt < nnn+1 ; nt++)
{
// takes the node indices of each triangle in n1,n2,n3:
triangles(nt).Get(n1,n2,n3);
// takes the node points:
gp_Pnt aPnt1 = aPoints(n1);
Points[0].Set(float(aPnt1.X()),float(aPnt1.Y()),float(aPnt1.Z()));
gp_Pnt aPnt2 = aPoints(n2);
Points[1].Set(float(aPnt2.X()),float(aPnt2.Y()),float(aPnt2.Z()));
gp_Pnt aPnt3 = aPoints(n3);
Points[2].Set(float(aPnt3.X()),float(aPnt3.Y()),float(aPnt3.Z()));
// give the occ faces to the internal mesh structure of freecad
MeshCore::MeshGeomFacet Face(Points[0],Points[1],Points[2]);
builder.AddFacet(Face);

}

}

Regards,
Joachim

Then it you likely incorrectly explore XDE document. In fact, once you get free shapes you should explore only them and should not use child labels. You need to rely on XDE API to retrieve data you need rather than inspecting the document on your own. Theoretically there is no guarantee that doc structure will forever remain the same, it is API's purpose to ensure compatibility.

So you need to:

1. Get free shapes
TDF_LabelSequence Labels;
Handle(XCAFDoc_ShapeTool) STool = XCAFDoc_DocumentTool::ShapeTool(Doc->Main());
STool->GetFreeShapes(Labels);
2. Explore them using TopoDS_Iterator or TopExp_Explorer
const TopoDS_Shape& aSubShape = ...;
3. Get attributes from XDE, e.g.
XCAFDoc_ColorType aType = ...;
if (XCAFDoc_ColorTool::IsSet (aSubShape, aType)) {
Quantity_Color aColor;
XCAFDoc_ColorTool::GetColor (aSubShape, aType, aColor);
...
}

Hope this helps.
Roman

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