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Toponaming/Part: transfer in makELoft

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Zheng, Lei
2024-02-15 16:25:28 -05:00
committed by bgbsww
parent 044329ae82
commit d80758e882
2 changed files with 113 additions and 0 deletions
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25
src/Mod/Part/App/TopoShape.h
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@@ -786,6 +786,31 @@ public:
}
};
/** Make an loft that is a shell or solid passing through a set of sections in a given sequence
*
* @param sources: the source shapes. The first shape is used as the spine,
* and the rest as sections. The sections can be of any
* type, but only wires are used. The first and last
* section may be vertex.
* @param isSolid: whether to make a solid
* @param isRuled: If true, then the faces generated between the edges of
* two consecutive section wires are ruled surfaces. If
* false, then they are smoothed out by approximation
* @param isClosed: If true, then the first section is duplicated to close
* the loft as the last section
* @param maxDegree: define the maximal U degree of the result surface
* @param op: optional string to be encoded into topo naming for indicating
* the operation
*
* @return The original content of this TopoShape is discarded and replaced
* with the new shape. The function returns the TopoShape itself as
* a self reference so that multiple operations can be carried out
* for the same shape in the same line of code.
*/
TopoShape &makELoft(const std::vector<TopoShape> &sources,
Standard_Boolean isSolid, Standard_Boolean isRuled, Standard_Boolean isClosed=Standard_False,
Standard_Integer maxDegree=5, const char *op=nullptr);
/** Make a ruled surface
*
* @param sources: the source shapes, each of which must contain either a

88
src/Mod/Part/App/TopoShapeExpansion.cpp
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@@ -1840,6 +1840,38 @@ TopoShape& TopoShape::makeElementCompound(const std::vector<TopoShape>& shapes,
return *this;
}
static std::vector<TopoShape> prepareProfiles(const std::vector<TopoShape> &shapes,size_t offset=0) {
std::vector<TopoShape> ret;
for(size_t i=offset;i<shapes.size();++i) {
auto sh = shapes[i];
if(sh.isNull())
HANDLE_NULL_INPUT;
auto shape = sh.getShape();
// Allow compounds with a single face, wire or vertex or
// if there are only edges building one wire
if (shape.ShapeType() == TopAbs_COMPOUND) {
sh = sh.makEWires();
if(sh.isNull())
HANDLE_NULL_INPUT;
shape = sh.getShape();
}
if (shape.ShapeType() == TopAbs_FACE) {
shape = sh.splitWires().getShape();
} else if (shape.ShapeType() == TopAbs_WIRE) {
// do nothing
} else if (shape.ShapeType() == TopAbs_EDGE) {
BRepBuilderAPI_MakeWire mkWire(TopoDS::Edge(shape));
shape = mkWire.Wire();
} else if (shape.ShapeType() != TopAbs_VERTEX) {
FC_THROWM(Base::CADKernelError,"Profile shape is not a vertex, edge, wire nor face.");
}
ret.push_back(shape);
}
if(ret.empty())
FC_THROWM(Base::CADKernelError,"No profile");
return ret;
}
TopoShape& TopoShape::makeElementWires(const std::vector<TopoShape>& shapes,
const char* op,
double tol,
@@ -2308,6 +2340,62 @@ TopoShape& TopoShape::makeElementShape(BRepPrimAPI_MakeHalfSpace& mkShape,
return makeShapeWithElementMap(mkShape.Solid(), MapperMaker(mkShape), {source}, op);
}
TopoShape &TopoShape::makeElementLoft(const std::vector<TopoShape> &shapes,
Standard_Boolean isSolid,
Standard_Boolean isRuled,
Standard_Boolean isClosed,
Standard_Integer maxDegree,
const char *op)
{
if(!op) op = Part::OpCodes::Loft;
// http://opencascade.blogspot.com/2010/01/surface-modeling-part5.html
BRepOffsetAPI_ThruSections aGenerator (isSolid,isRuled);
aGenerator.SetMaxDegree(maxDegree);
auto profiles = prepareProfiles(shapes);
if (shapes.size() < 2)
FC_THROWM(Base::CADKernelError,"Need at least two vertices, edges or wires to create loft face");
for(auto &sh : profiles) {
const auto &shape = sh.getShape();
if(shape.ShapeType() == TopAbs_VERTEX)
aGenerator.AddVertex(TopoDS::Vertex (shape));
else
aGenerator.AddWire(TopoDS::Wire (shape));
}
// close loft by duplicating initial profile as last profile. not perfect.
if (isClosed) {
/* can only close loft in certain combinations of Vertex/Wire(Edge):
- V1-W1-W2-W3-V2 ==> V1-W1-W2-W3-V2-V1 invalid closed
- V1-W1-W2-W3 ==> V1-W1-W2-W3-V1 valid closed
- W1-W2-W3-V1 ==> W1-W2-W3-V1-W1 invalid closed
- W1-W2-W3 ==> W1-W2-W3-W1 valid closed*/
if (profiles.back().getShape().ShapeType() == TopAbs_VERTEX) {
Base::Console().Message("TopoShape::makeLoft: can't close Loft with Vertex as last profile. 'Closed' ignored.\n");
}
else {
// repeat Add logic above for first profile
const TopoDS_Shape& firstProfile = profiles.front().getShape();
if (firstProfile.ShapeType() == TopAbs_VERTEX) {
aGenerator.AddVertex(TopoDS::Vertex (firstProfile));
}
else if (firstProfile.ShapeType() == TopAbs_EDGE) {
aGenerator.AddWire(BRepBuilderAPI_MakeWire(TopoDS::Edge(firstProfile)).Wire());
}
else if (firstProfile.ShapeType() == TopAbs_WIRE) {
aGenerator.AddWire(TopoDS::Wire (firstProfile));
}
}
}
Standard_Boolean anIsCheck = Standard_True;
aGenerator.CheckCompatibility (anIsCheck); // use BRepFill_CompatibleWires on profiles. force #edges, orientation, "origin" to match.
aGenerator.Build();
return makeShapeWithElementMap(aGenerator.Shape(),MapperThruSections(aGenerator,profiles),shapes,op);
}
TopoShape& TopoShape::makeElementDraft(const TopoShape& shape,
const std::vector<TopoShape>& _faces,
const gp_Dir& pullDirection,