Program Listing for File opencascade_kernel.h¶
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/********************************************************************************
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* This file is part of IfcOpenShell. *
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* IfcOpenShell is free software: you can redistribute it and/or modify *
* it under the terms of the Lesser GNU General Public License as published by *
* the Free Software Foundation, either version 3.0 of the License, or *
* (at your option) any later version. *
* *
* IfcOpenShell is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* Lesser GNU General Public License for more details. *
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* You should have received a copy of the Lesser GNU General Public License *
* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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********************************************************************************/
#ifndef IFCGEOM_H
#define IFCGEOM_H
#include <cmath>
#include <array>
#include <gp_Pnt.hxx>
#include <gp_Vec.hxx>
#include <gp_Mat.hxx>
#include <gp_Mat2d.hxx>
#include <gp_GTrsf.hxx>
#include <gp_GTrsf2d.hxx>
#include <gp_Trsf.hxx>
#include <gp_Trsf2d.hxx>
#include <gp_Quaternion.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Wire.hxx>
#include <TopoDS_Face.hxx>
#include <Geom_Curve.hxx>
#include <gp_Pln.hxx>
#include <BOPAlgo_Operation.hxx>
#include <BRep_Builder.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include "../../../ifcgeom/abstract_kernel.h"
#include "../../../ifcgeom/element.h"
#include "../../../ifcgeom/representation.h"
#include "../../../ifcgeom/conversion_result.h"
#include "../../../ifcgeom/kernels/opencascade/opencascade_conversion_result.h"
#include "../../../ifcgeom/kernels/ifc_geomlibrary_api.h"
#include "../../../ifcgeom/taxonomy.h"
#include "../../../ifcgeom/conversion_settings.h"
namespace {
template <typename Fn>
bool handle_occt_exception(Fn&& fn) {
try {
return std::forward<Fn>(fn)();
} catch (const Standard_Failure& e) {
if (e.GetMessageString() && strlen(e.GetMessageString())) {
throw std::runtime_error(e.GetMessageString());
} else {
throw std::runtime_error("Unknown error creating geometry");
}
}
}
}
namespace ifcopenshell::geom {
class IFC_GEOMLIBRARY_API open_cascade_kernel : public ifcopenshell::geom::kernels::abstract_kernel {
private:
/*
faceset_helper traverses the forward instance references of IfcConnectedFaceSet and then provides a mapping
M of (IfcCartesianPoint, IfcCartesianPoint) -> TopoDS_Edge, where M(a, b) is a partner of M(b, a), ie share
the same underlying edge but with orientation reversed. This then later speeds op the process of creating a
manifold Shell / Solid from this set of faces. Only IfcPolyLoop instances are used. Points within the tolerance
threshiold are merged, so consider points a, b, c, distance(a, b) < eps then M(a, b) = Null, M(a, b) = M(a, c).
*/
class faceset_helper {
private:
open_cascade_kernel* kernel_;
std::set<int> duplicates_;
std::set<int> duplicate_identities_built_;
std::map<int, int> vertex_mapping_;
std::map<std::pair<int, int>, TopoDS_Edge> edges_;
double eps_;
bool non_manifold_;
void loop_(const ifcopenshell::geom::taxonomy::loop::ptr ps, const std::function<void(int, int, bool)>& callback);
public:
faceset_helper(open_cascade_kernel* kernel, const ifcopenshell::geom::taxonomy::shell::ptr l);
~faceset_helper();
bool non_manifold() const { return non_manifold_; }
bool& non_manifold() { return non_manifold_; }
double epsilon() const { return eps_; }
bool edge(int A, int B, TopoDS_Edge& e);
bool wire(const ifcopenshell::geom::taxonomy::loop::ptr loop, TopoDS_Wire& wire);
bool wires(const ifcopenshell::geom::taxonomy::loop::ptr loop, NCollection_List<TopoDS_Shape>& wires);
};
faceset_helper* faceset_helper_;
public:
open_cascade_kernel(const ifcopenshell::geom::settings& settings, ifcopenshell::logger& logger = ifcopenshell::logger::root())
: abstract_kernel("opencascade", settings, logger)
, faceset_helper_(nullptr)
{}
virtual abstract_kernel* clone(ifcopenshell::logger& logger) const {
return new open_cascade_kernel(settings(), logger);
}
virtual bool supports_boolean_operations() const { return true; }
bool convert(const ifcopenshell::geom::taxonomy::extrusion::ptr, TopoDS_Shape&);
bool convert(const ifcopenshell::geom::taxonomy::face::ptr, TopoDS_Shape&, bool reversed_surface = false);
bool convert(const ifcopenshell::geom::taxonomy::loop::ptr, TopoDS_Wire&);
bool convert(const ifcopenshell::geom::taxonomy::matrix4::ptr, gp_GTrsf&);
bool convert(const ifcopenshell::geom::taxonomy::shell::ptr, TopoDS_Shape&);
bool convert(const ifcopenshell::geom::taxonomy::solid::ptr, TopoDS_Shape&);
bool convert(const ifcopenshell::geom::taxonomy::loft::ptr, TopoDS_Shape&);
bool convert(const ifcopenshell::geom::taxonomy::bspline_surface::ptr bs, Handle(Geom_Surface) surf);
bool convert(const ifcopenshell::geom::taxonomy::sweep_along_curve::ptr, TopoDS_Shape&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::edge::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::loop::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::face::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::solid::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::shell::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::extrusion::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::revolve::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::boolean_result::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::loft::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_impl(const ifcopenshell::geom::taxonomy::sweep_along_curve::ptr, std::vector<ifcopenshell::geom::conversion_result>&);
virtual bool convert_openings(const express::base& entity, const std::vector<std::pair<ifcopenshell::geom::taxonomy::ptr, ifcopenshell::geom::taxonomy::matrix4>>& openings,
const std::vector<ifcopenshell::geom::conversion_result>& entity_shapes, const ifcopenshell::geom::taxonomy::matrix4& entity_trsf, std::vector<ifcopenshell::geom::conversion_result>& cut_shapes);
virtual bool unify_shapes(const std::vector<ifcopenshell::geom::conversion_result>& input, std::vector<ifcopenshell::geom::conversion_result>& output);
typedef std::variant<boost::blank, Handle(Geom_Curve), TopoDS_Wire> curve_creation_visitor_result_type;
curve_creation_visitor_result_type convert_curve(const ifcopenshell::geom::taxonomy::ptr);
Handle(Geom_Surface) convert_surface(const ifcopenshell::geom::taxonomy::ptr);
template <typename T, typename U>
static T convert_xyz(const U& u) {
const auto& vs = u.ccomponents();
return T(vs(0), vs(1), vs(2));
}
// @todo eliminate
template <typename T, typename U>
static T convert_xyz2(const U& vs) {
return T(vs(0), vs(1), vs(2));
}
};
express::base POSTFIX_SCHEMA(tesselate_)(const TopoDS_Shape& shape, double deflection);
express::base POSTFIX_SCHEMA(serialise_)(const TopoDS_Shape& shape, bool advanced);
}
#endif