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Fix boolean results on non-solid shells #4832

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This commit is contained in:
Thomas Krijnen
2024-06-18 21:30:00 +02:00
parent 0e42130e9d
commit a3d4642ea9
7 changed files with 17 additions and 19 deletions
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src/ifcgeom/kernels/opencascade/OpenCascadeKernel.cpp
+2 -5
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@@ -248,9 +248,8 @@ bool IfcGeom::OpenCascadeKernel::convert_openings(const IfcUtil::IfcBaseEntity*
AbstractKernel::convert(op.first, opening_shapes);
for (unsigned int i = 0; i < opening_shapes.size(); ++i) {
TopoDS_Shape opening_shape_solid;
auto opening_shape_i = std::static_pointer_cast<OpenCascadeShape>(opening_shapes[i].Shape())->shape();
const TopoDS_Shape& opening_shape_unlocated = util::ensure_fit_for_subtraction(opening_shape_i, opening_shape_solid, settings_.get<settings::Precision>().get());
const TopoDS_Shape& opening_shape_unlocated = util::ensure_fit_for_subtraction(opening_shape_i, settings_.get<settings::Precision>().get());
auto gtrsf = opening_shapes[i].Placement();
// @todo check
@@ -306,13 +305,11 @@ bool IfcGeom::OpenCascadeKernel::convert_openings(const IfcUtil::IfcBaseEntity*
TopoDS_Shape entity_part_result;
for (int as_shell = 0; as_shell < 2; ++as_shell) {
TopoDS_Shape entity_shape_solid;
TopoDS_Shape entity_shape_unlocated;
if (as_shell) {
entity_shape_unlocated = entity_part;
} else {
entity_shape_unlocated = util::ensure_fit_for_subtraction(entity_part, entity_shape_solid, settings_.get<settings::Precision>().get());
entity_shape_unlocated = util::ensure_fit_for_subtraction(entity_part, settings_.get<settings::Precision>().get());
}
const auto& m = it3->Placement()->ccomponents();
// @todo
src/ifcgeom/kernels/opencascade/base_utils.cpp
+3 -3
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@@ -762,7 +762,7 @@ bool IfcGeom::util::create_solid_from_faces(const TopTools_ListOfShape& face_lis
return valid_shell;
}
bool IfcGeom::util::flatten_shape_list(const IfcGeom::ConversionResults& shapes, TopoDS_Shape& result, bool fuse, double tol) {
bool IfcGeom::util::flatten_shape_list(const IfcGeom::ConversionResults& shapes, TopoDS_Shape& result, bool fuse, bool create_shell, double tol) {
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
@@ -772,8 +772,8 @@ bool IfcGeom::util::flatten_shape_list(const IfcGeom::ConversionResults& shapes,
for (IfcGeom::ConversionResults::const_iterator it = shapes.begin(); it != shapes.end(); ++it) {
TopoDS_Shape merged;
const TopoDS_Shape& s = std::static_pointer_cast<ifcopenshell::geometry::OpenCascadeShape>(it->Shape())->shape();
if (fuse) {
util::ensure_fit_for_subtraction(s, merged, tol);
if (fuse || create_shell) {
merged = util::ensure_fit_for_subtraction(s, tol);
} else {
merged = s;
}
src/ifcgeom/kernels/opencascade/base_utils.h
+1 -1
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@@ -73,7 +73,7 @@ namespace IfcGeom {
TopoDS_Shape apply_transformation(const TopoDS_Shape&, const gp_Trsf&);
TopoDS_Shape apply_transformation(const TopoDS_Shape&, const gp_GTrsf&);
bool flatten_shape_list(const IfcGeom::ConversionResults& shapes, TopoDS_Shape& result, bool fuse, double tol);
bool flatten_shape_list(const IfcGeom::ConversionResults& shapes, TopoDS_Shape& result, bool fuse, bool create_shell, double tol);
bool validate_shape(const TopoDS_Shape&);
}
}
src/ifcgeom/kernels/opencascade/boolean_result.cpp
+3 -1
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@@ -98,7 +98,7 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::boolean_result::ptr br, Con
AbstractKernel::convert(c, cr);
if (first && br->operation == taxonomy::boolean_result::SUBTRACTION) {
// @todo A will be null on union/intersection, intended?
IfcGeom::util::flatten_shape_list(cr, a, false, settings_.get<settings::Precision>().get());
IfcGeom::util::flatten_shape_list(cr, a, false, true, settings_.get<settings::Precision>().get());
first_item_style = c->surface_style;
if (!first_item_style && c->kind() == taxonomy::COLLECTION) {
// @todo recursively right?
@@ -144,6 +144,8 @@ bool OpenCascadeKernel::convert_impl(const taxonomy::boolean_result::ptr br, Con
} else {
S = result;
}
} else {
S = util::ensure_fit_for_subtraction(S, tol);
}
b.Append(S);
src/ifcgeom/kernels/opencascade/boolean_utils.cpp
+4 -3
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@@ -1430,14 +1430,15 @@ bool IfcGeom::util::boolean_operation(const boolean_settings& settings, const To
return boolean_operation(settings, a, bs, op, result, fuzziness);
}
const TopoDS_Shape& IfcGeom::util::ensure_fit_for_subtraction(const TopoDS_Shape& shape, TopoDS_Shape& solid, double tol) {
TopoDS_Shape IfcGeom::util::ensure_fit_for_subtraction(const TopoDS_Shape& shape, double tol) {
const bool is_comp = is_compound(shape);
if (!is_comp) {
return solid = shape;
return shape;
}
TopoDS_Solid solid;
if (!create_solid_from_compound(shape, solid, tol)) {
return solid = shape;
return shape;
}
return solid;
src/ifcgeom/kernels/opencascade/boolean_utils.h
+1 -1
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@@ -96,7 +96,7 @@ namespace IfcGeom {
bool boolean_operation(const boolean_settings& settings, const TopoDS_Shape&, const TopoDS_Shape&, BOPAlgo_Operation, TopoDS_Shape&, double fuzziness = -1.);
const TopoDS_Shape& ensure_fit_for_subtraction(const TopoDS_Shape& shape, TopoDS_Shape& solid, double tol);
TopoDS_Shape ensure_fit_for_subtraction(const TopoDS_Shape& shape, double tol);
}
}
src/ifcgeom/kernels/opencascade/layerset.cpp
+3 -5
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@@ -167,7 +167,7 @@ namespace {
bool IfcGeom::util::apply_folded_layerset(const ConversionResults& items, const std::vector< std::vector<Handle_Geom_Surface> >& surfaces, const std::vector<ifcopenshell::geometry::taxonomy::style::ptr>& styles, ConversionResults& result, double tol) {
Bnd_Box bb;
TopoDS_Shape input;
flatten_shape_list(items, input, false, tol);
flatten_shape_list(items, input, false, false, tol);
typedef std::vector< std::vector<Handle_Geom_Surface> > folded_surfaces_t;
typedef std::vector< std::pair< TopoDS_Face, std::pair<gp_Pnt, gp_Pnt> > > faces_with_mass_t;
@@ -263,8 +263,7 @@ bool IfcGeom::util::apply_folded_layerset(const ConversionResults& items, const
for (ConversionResults::const_iterator it = items.begin(); it != items.end(); ++it) {
const TopoDS_Shape& s = std::static_pointer_cast<OpenCascadeShape>(it->Shape())->shape();
TopoDS_Solid sld;
ensure_fit_for_subtraction(s, sld, tol);
TopoDS_Shape sld = ensure_fit_for_subtraction(s, tol);
std::vector<TopoDS_Shape> slices;
if (split(s, shells, tol, slices) && slices.size() == styles.size()) {
@@ -335,8 +334,7 @@ bool IfcGeom::util::apply_layerset(const ConversionResults& items, const std::ve
for (ConversionResults::const_iterator it = items.begin(); it != items.end(); ++it) {
const TopoDS_Shape& s = std::static_pointer_cast<OpenCascadeShape>(it->Shape())->shape();
TopoDS_Solid sld;
ensure_fit_for_subtraction(s, sld, tol);
TopoDS_Shape sld = ensure_fit_for_subtraction(s, tol);
TopTools_ListOfShape operands;
for (unsigned i = 1; i < surfaces.size() - 1; ++i) {