void ProfileBased::getUpToFace(TopoDS_Face& upToFace,
const TopoDS_Shape& support,
const TopoDS_Face& supportface,
const TopoDS_Shape& sketchshape,
const std::string& method,
const gp_Dir& dir,
const double offset)
{
if ((method == "UpToLast") || (method == "UpToFirst")) {
// Check for valid support object
if (support.IsNull())
throw Base::ValueError("SketchBased: Up to face: No support in Sketch and no base feature!");
std::vector<Part::cutFaces> cfaces = Part::findAllFacesCutBy(support, sketchshape, dir);
if (cfaces.empty())
throw Base::ValueError("SketchBased: Up to face: No faces found in this direction");
// Find nearest/furthest face
std::vector<Part::cutFaces>::const_iterator it, it_near, it_far;
it_near = it_far = cfaces.begin();
for (it = cfaces.begin(); it != cfaces.end(); it++)
if (it->distsq > it_far->distsq)
it_far = it;
else if (it->distsq < it_near->distsq)
it_near = it;
upToFace = (method == "UpToLast" ? it_far->face : it_near->face);
}
// Check whether the face has limits or not. Unlimited faces have no wire
// Note: Datum planes are always unlimited
TopExp_Explorer Ex(upToFace,TopAbs_WIRE);
if (Ex.More()) {
// Remove the limits of the upToFace so that the extrusion works even if sketchshape is larger
// than the upToFace
bool remove_limits = false;
for (Ex.Init(sketchshape,TopAbs_FACE); Ex.More(); Ex.Next()) {
// Get outermost wire of sketch face
TopoDS_Face sketchface = TopoDS::Face(Ex.Current());
TopoDS_Wire outerWire = ShapeAnalysis::OuterWire(sketchface);
if (!checkWireInsideFace(outerWire, upToFace, dir)) {
remove_limits = true;
break;
}
}
// It must also be checked that all projected inner wires of the upToFace
// lie outside the sketch shape. If this is not the case then the sketch
// shape is not completely covered by the upToFace. See #0003141
if (!remove_limits) {
TopoDS_Wire outerWire = ShapeAnalysis::OuterWire(upToFace);
for (Ex.Init(upToFace, TopAbs_WIRE); Ex.More(); Ex.Next()) {
if (!outerWire.IsSame(Ex.Current())) {
BRepProj_Projection proj(TopoDS::Wire(Ex.Current()), sketchshape, -dir);
if (proj.More()) {
remove_limits = true;
break;
}
}
}
}
if (remove_limits) {
// Note: Using an unlimited face every time gives unnecessary failures for concave faces
TopLoc_Location loc = upToFace.Location();
BRepAdaptor_Surface adapt(upToFace, Standard_False);
// use the placement of the adapter, not of the upToFace
loc = TopLoc_Location(adapt.Trsf());
BRepBuilderAPI_MakeFace mkFace(adapt.Surface().Surface()
#if OCC_VERSION_HEX >= 0x060502
, Precision::Confusion()
#endif
);
if (!mkFace.IsDone())
throw Base::ValueError("SketchBased: Up To Face: Failed to create unlimited face");
upToFace = TopoDS::Face(mkFace.Shape());
upToFace.Location(loc);
}
}
// Check that the upToFace does not intersect the sketch face and
// is not parallel to the extrusion direction (for simplicity, supportface is used instead of sketchshape)
BRepAdaptor_Surface adapt1(TopoDS::Face(supportface));
BRepAdaptor_Surface adapt2(TopoDS::Face(upToFace));
if (adapt2.GetType() == GeomAbs_Plane) {
if (adapt1.Plane().Axis().IsNormal(adapt2.Plane().Axis(), Precision::Confusion()))
throw Base::ValueError("SketchBased: Up to face: Must not be parallel to extrusion direction!");
}
// We must measure from sketchshape, not supportface, here
BRepExtrema_DistShapeShape distSS(sketchshape, upToFace);
if (distSS.Value() < Precision::Confusion())
throw Base::ValueError("SketchBased: Up to face: Must not intersect sketch!");
// Move the face in the extrusion direction
// TODO: For non-planar faces, we could consider offsetting the surface
if (fabs(offset) > Precision::Confusion()) {
if (adapt2.GetType() == GeomAbs_Plane) {
gp_Trsf mov;
mov.SetTranslation(offset * gp_Vec(dir));
TopLoc_Location loc(mov);
upToFace.Move(loc);
} else {
throw Base::TypeError("SketchBased: Up to Face: Offset not supported yet for non-planar faces");
}
}
}
void SketchBased::getUpToFace(TopoDS_Face& upToFace,
const TopoDS_Shape& support,
const TopoDS_Face& supportface,
const TopoDS_Shape& sketchshape,
const std::string& method,
const gp_Dir& dir)
{
if ((method == "UpToLast") || (method == "UpToFirst")) {
// Check for valid support object
if (support.IsNull())
throw Base::Exception("SketchBased: Up to face: No support in Sketch!");
std::vector<Part::cutFaces> cfaces = Part::findAllFacesCutBy(support, sketchshape, dir);
if (cfaces.empty())
throw Base::Exception("SketchBased: Up to face: No faces found in this direction");
// Find nearest/furthest face
std::vector<Part::cutFaces>::const_iterator it, it_near, it_far;
it_near = it_far = cfaces.begin();
for (it = cfaces.begin(); it != cfaces.end(); it++)
if (it->distsq > it_far->distsq)
it_far = it;
else if (it->distsq < it_near->distsq)
it_near = it;
upToFace = (method == "UpToLast" ? it_far->face : it_near->face);
}
// Remove the limits of the upToFace so that the extrusion works even if sketchshape is larger
// than the upToFace
bool remove_limits = false;
TopExp_Explorer Ex;
for (Ex.Init(sketchshape,TopAbs_FACE); Ex.More(); Ex.Next()) {
// Get outermost wire of sketch face
TopoDS_Face sketchface = TopoDS::Face(Ex.Current());
TopoDS_Wire outerWire = ShapeAnalysis::OuterWire(sketchface);
if (!checkWireInsideFace(outerWire, upToFace, dir)) {
remove_limits = true;
break;
}
}
if (remove_limits) {
// Note: Using an unlimited face every time gives unnecessary failures for concave faces
TopLoc_Location loc = upToFace.Location();
BRepAdaptor_Surface adapt(upToFace, Standard_False);
BRepBuilderAPI_MakeFace mkFace(adapt.Surface().Surface()
#if OCC_VERSION_HEX >= 0x060502
, Precision::Confusion()
#endif
);
if (!mkFace.IsDone())
throw Base::Exception("SketchBased: Up To Face: Failed to create unlimited face");
upToFace = TopoDS::Face(mkFace.Shape());
upToFace.Location(loc);
}
// Check that the upToFace does not intersect the sketch face and
// is not parallel to the extrusion direction (for simplicity, supportface is used instead of sketchshape)
BRepAdaptor_Surface adapt1(TopoDS::Face(supportface));
BRepAdaptor_Surface adapt2(TopoDS::Face(upToFace));
if (adapt2.GetType() == GeomAbs_Plane) {
if (adapt1.Plane().Axis().IsNormal(adapt2.Plane().Axis(), Precision::Confusion()))
throw Base::Exception("SketchBased: Up to face: Must not be parallel to extrusion direction!");
}
// We must measure from sketchshape, not supportface, here
BRepExtrema_DistShapeShape distSS(sketchshape, upToFace);
if (distSS.Value() < Precision::Confusion())
throw Base::Exception("SketchBased: Up to face: Must not intersect sketch!");
}