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https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-09-10 22:16:41 +00:00
Initial implementation of layerset slicing
This commit is contained in:
aothms
+108
-30
@@ -20,8 +20,14 @@
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#ifndef IFCGEOM_H
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#define IFCGEOM_H
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#define ALMOST_ZERO (1e-9)
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#define ALMOST_THE_SAME(a,b) (fabs(a-b) < ALMOST_ZERO)
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#include <cmath>
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static const double ALMOST_ZERO = 1.e-9;
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template <typename T>
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inline static bool ALMOST_THE_SAME(const T& a, const T& b, double tolerance=ALMOST_ZERO) {
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return fabs(a-b) < tolerance;
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}
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#include <gp_Pnt.hxx>
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#include <gp_Vec.hxx>
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@@ -61,8 +67,49 @@ public:
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class Kernel {
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private:
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double deflection_tolerance;
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double wire_creation_tolerance;
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double minimal_face_area;
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double point_equality_tolerance;
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double max_faces_to_sew;
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double ifc_length_unit;
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double ifc_planeangle_unit;
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double modelling_precision;
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double dimensionality;
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Cache cache;
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const SurfaceStyle* internalize_surface_style(const std::pair<IfcSchema::IfcSurfaceStyle*, IfcSchema::IfcSurfaceStyleShading*>& shading_style);
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public:
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Kernel()
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: deflection_tolerance(0.001)
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, wire_creation_tolerance(0.0001)
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, minimal_face_area(0.000001)
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, point_equality_tolerance(0.00001)
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, max_faces_to_sew(-1.0)
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, ifc_length_unit(1.0)
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, ifc_planeangle_unit(-1.0)
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, modelling_precision(0.00001)
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, dimensionality(1.)
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{}
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Kernel(const Kernel& other) {
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*this = other;
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}
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Kernel& Kernel::operator=(const Kernel& other) {
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setValue(GV_DEFLECTION_TOLERANCE, other.getValue(GV_DEFLECTION_TOLERANCE));
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setValue(GV_WIRE_CREATION_TOLERANCE, other.getValue(GV_WIRE_CREATION_TOLERANCE));
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setValue(GV_MINIMAL_FACE_AREA, other.getValue(GV_MINIMAL_FACE_AREA));
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setValue(GV_POINT_EQUALITY_TOLERANCE, other.getValue(GV_POINT_EQUALITY_TOLERANCE));
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setValue(GV_MAX_FACES_TO_SEW, other.getValue(GV_MAX_FACES_TO_SEW));
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setValue(GV_LENGTH_UNIT, other.getValue(GV_LENGTH_UNIT));
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setValue(GV_PLANEANGLE_UNIT, other.getValue(GV_PLANEANGLE_UNIT));
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setValue(GV_PRECISION, other.getValue(GV_PRECISION));
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setValue(GV_DIMENSIONALITY, other.getValue(GV_DIMENSIONALITY));
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setValue(GV_DEFLECTION_TOLERANCE, other.getValue(GV_DEFLECTION_TOLERANCE));
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return *this;
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}
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// Tolerances and settings for various geometrical operations:
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enum GeomValue {
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// Specifies the deflection of the mesher
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@@ -108,6 +155,29 @@ public:
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bool convert_face(const IfcUtil::IfcBaseClass* L, TopoDS_Shape& result);
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bool convert_openings(const IfcSchema::IfcProduct* entity, const IfcSchema::IfcRelVoidsElement::list::ptr& openings, const IfcRepresentationShapeItems& entity_shapes, const gp_Trsf& entity_trsf, IfcRepresentationShapeItems& cut_shapes);
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bool convert_openings_fast(const IfcSchema::IfcProduct* entity, const IfcSchema::IfcRelVoidsElement::list::ptr& openings, const IfcRepresentationShapeItems& entity_shapes, const gp_Trsf& entity_trsf, IfcRepresentationShapeItems& cut_shapes);
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bool convert_layerset(const IfcSchema::IfcProduct*, std::vector<Handle_Geom_Surface>&, std::vector<const SurfaceStyle*>&, std::vector<double>&);
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bool apply_layerset(const IfcRepresentationShapeItems&, const std::vector<Handle_Geom_Surface>&, const std::vector<const SurfaceStyle*>&, const std::vector<double>& thickness, IfcRepresentationShapeItems&);
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bool apply_folded_layerset(const IfcRepresentationShapeItems&, const std::vector< std::vector<Handle_Geom_Surface> >&, const std::vector<const SurfaceStyle*>&, const std::vector<double>& thickness, IfcRepresentationShapeItems&);
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bool fold_layers(const IfcSchema::IfcWall*, const IfcRepresentationShapeItems&, const std::vector<Handle_Geom_Surface>&, const std::vector<double>&, std::vector< std::vector<Handle_Geom_Surface> >&);
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bool split_solid_by_surface(const TopoDS_Shape&, const Handle_Geom_Surface&, TopoDS_Shape&, TopoDS_Shape&);
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bool split_solid_by_shell(const TopoDS_Shape&, const TopoDS_Shape& s, TopoDS_Shape&, TopoDS_Shape&);
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const Handle_Geom_Curve intersect(const Handle_Geom_Surface&, const Handle_Geom_Surface&);
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const Handle_Geom_Curve intersect(const Handle_Geom_Surface&, const TopoDS_Face&);
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const Handle_Geom_Curve intersect(const TopoDS_Face&, const Handle_Geom_Surface&);
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bool intersect(const Handle_Geom_Curve&, const Handle_Geom_Surface&, gp_Pnt&, double& u, double& v, double& w);
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bool intersect(const Handle_Geom_Curve&, const TopoDS_Face&, gp_Pnt&);
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bool intersect(const Handle_Geom_Curve&, const TopoDS_Shape&, std::vector<gp_Pnt>&);
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bool intersect(const Handle_Geom_Surface&, const TopoDS_Shape&, std::vector< std::pair<Handle_Geom_Surface, Handle_Geom_Curve> >&);
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bool closest(const gp_Pnt&, const std::vector<gp_Pnt>&, gp_Pnt&);
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bool project(const Handle_Geom_Curve&, const gp_Pnt&, gp_Pnt& p, double& u, double& d);
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bool project(const Handle_Geom_Surface&, const TopoDS_Shape&, double& u1, double& v1, double& u2, double& v2, double widen=0.1);
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int count(const TopoDS_Shape&, TopAbs_ShapeEnum);
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bool find_wall_end_points(const IfcSchema::IfcWall*, gp_Pnt& start, gp_Pnt& end);
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IfcSchema::IfcSurfaceStyleShading* get_surface_style(IfcSchema::IfcRepresentationItem* item);
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bool create_solid_from_compound(const TopoDS_Shape& compound, TopoDS_Shape& solid);
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bool is_compound(const TopoDS_Shape& shape);
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@@ -125,6 +195,8 @@ public:
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bool fill_nonmanifold_wires_with_planar_faces(TopoDS_Shape& shape);
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void remove_redundant_points_from_loop(TColgp_SequenceOfPnt& polygon, bool closed, double tol=-1.);
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IfcSchema::IfcRepresentation* find_representation(const IfcSchema::IfcProduct*, const std::string&);
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std::pair<std::string, double> initializeUnits(IfcSchema::IfcUnitAssignment*);
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IfcSchema::IfcObjectDefinition* get_decomposing_entity(IfcSchema::IfcProduct*);
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@@ -132,48 +204,54 @@ public:
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template <typename P>
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IfcGeom::BRepElement<P>* create_brep_for_representation_and_product(const IteratorSettings&, IfcSchema::IfcRepresentation*, IfcSchema::IfcProduct*);
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const SurfaceStyle* get_style(const IfcSchema::IfcRepresentationItem* representation_item);
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const SurfaceStyle* get_style(const IfcSchema::IfcRepresentationItem*);
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const SurfaceStyle* get_style(const IfcSchema::IfcMaterial*);
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template <typename T> std::pair<IfcSchema::IfcSurfaceStyle*, T*> get_surface_style(const IfcSchema::IfcRepresentationItem* representation_item) {
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IfcSchema::IfcStyledItem::list::ptr styled_items = representation_item->StyledByItem();
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for (IfcSchema::IfcStyledItem::list::it jt = styled_items->begin(); jt != styled_items->end(); ++jt) {
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template <typename T> std::pair<IfcSchema::IfcSurfaceStyle*, T*> _get_surface_style(const IfcSchema::IfcStyledItem* si) {
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#ifdef USE_IFC4
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IfcEntityList::ptr style_assignments = (*jt)->Styles();
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for (IfcEntityList::it kt = style_assignments->begin(); kt != style_assignments->end(); ++kt) {
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if (!(*kt)->is(IfcSchema::Type::IfcPresentationStyleAssignment)) {
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continue;
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}
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IfcSchema::IfcPresentationStyleAssignment* style_assignment = (IfcSchema::IfcPresentationStyleAssignment*) *kt;
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IfcEntityList::ptr style_assignments = si->Styles();
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for (IfcEntityList::it kt = style_assignments->begin(); kt != style_assignments->end(); ++kt) {
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if (!(*kt)->is(IfcSchema::Type::IfcPresentationStyleAssignment)) {
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continue;
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}
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IfcSchema::IfcPresentationStyleAssignment* style_assignment = (IfcSchema::IfcPresentationStyleAssignment*) *kt;
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#else
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IfcSchema::IfcPresentationStyleAssignment::list::ptr style_assignments = (*jt)->Styles();
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for (IfcSchema::IfcPresentationStyleAssignment::list::it kt = style_assignments->begin(); kt != style_assignments->end(); ++kt) {
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IfcSchema::IfcPresentationStyleAssignment* style_assignment = *kt;
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IfcSchema::IfcPresentationStyleAssignment::list::ptr style_assignments = si->Styles();
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for (IfcSchema::IfcPresentationStyleAssignment::list::it kt = style_assignments->begin(); kt != style_assignments->end(); ++kt) {
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IfcSchema::IfcPresentationStyleAssignment* style_assignment = *kt;
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#endif
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IfcEntityList::ptr styles = style_assignment->Styles();
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for (IfcEntityList::it lt = styles->begin(); lt != styles->end(); ++lt) {
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IfcUtil::IfcBaseClass* style = *lt;
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if (style->is(IfcSchema::Type::IfcSurfaceStyle)) {
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IfcSchema::IfcSurfaceStyle* surface_style = (IfcSchema::IfcSurfaceStyle*) style;
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if (surface_style->Side() != IfcSchema::IfcSurfaceSide::IfcSurfaceSide_NEGATIVE) {
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IfcEntityList::ptr styles_elements = surface_style->Styles();
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for (IfcEntityList::it mt = styles_elements->begin(); mt != styles_elements->end(); ++mt) {
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if ((*mt)->is(T::Class())) {
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return std::make_pair(surface_style, (T*) *mt);
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}
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IfcEntityList::ptr styles = style_assignment->Styles();
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for (IfcEntityList::it lt = styles->begin(); lt != styles->end(); ++lt) {
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IfcUtil::IfcBaseClass* style = *lt;
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if (style->is(IfcSchema::Type::IfcSurfaceStyle)) {
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IfcSchema::IfcSurfaceStyle* surface_style = (IfcSchema::IfcSurfaceStyle*) style;
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if (surface_style->Side() != IfcSchema::IfcSurfaceSide::IfcSurfaceSide_NEGATIVE) {
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IfcEntityList::ptr styles_elements = surface_style->Styles();
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for (IfcEntityList::it mt = styles_elements->begin(); mt != styles_elements->end(); ++mt) {
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if ((*mt)->is(T::Class())) {
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return std::make_pair(surface_style, (T*) *mt);
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}
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}
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}
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}
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}
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// StyledByItem is a SET [0:1] OF IfcStyledItem, so we
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// break after encountering the first IfcStyledItem
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break;
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}
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return std::make_pair<IfcSchema::IfcSurfaceStyle*, T*>(0,0);
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}
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template <typename T> std::pair<IfcSchema::IfcSurfaceStyle*, T*> get_surface_style(const IfcSchema::IfcRepresentationItem* representation_item) {
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if (representation_item->as<IfcSchema::IfcStyledItem>()) {
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return _get_surface_style<T>(representation_item->as<IfcSchema::IfcStyledItem>());
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}
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IfcSchema::IfcStyledItem::list::ptr styled_items = representation_item->StyledByItem();
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for (IfcSchema::IfcStyledItem::list::it jt = styled_items->begin(); jt != styled_items->end(); ++jt) {
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// StyledByItem is a SET [0:1] OF IfcStyledItem, so we return after the first IfcStyledItem:
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return _get_surface_style<T>(*jt);
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}
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return std::make_pair<IfcSchema::IfcSurfaceStyle*, T*>(0,0);
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}
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#include "IfcRegisterGeomHeader.h"
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};
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