/********************************************************************************
* *
* This file is part of IfcOpenShell. *
* *
* 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. *
* *
* You should have received a copy of the Lesser GNU General Public License *
* along with this program. If not, see . *
* *
********************************************************************************/
#ifndef IFCGEOM_H
#define IFCGEOM_H
#define ALMOST_ZERO (1e-9)
#define ALMOST_THE_SAME(a,b) (fabs(a-b) < ALMOST_ZERO)
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include "../ifcparse/IfcParse.h"
#include "../ifcparse/IfcUtil.h"
#include "../ifcgeom/IfcRepresentationShapeItem.h"
namespace IfcGeom {
// Tolerances and settings for various geometrical operations:
enum GeomValue {
// Specifies the deflection of the mesher
// Default: 0.001m / 1mm
GV_DEFLECTION_TOLERANCE,
// Specifies the tolerance of the wire builder, most notably for trimmed curves
// Defailt: 0.0001m / 0.1mm
GV_WIRE_CREATION_TOLERANCE,
// Specifies the minimal area of a face to be included in an IfcConnectedFaceset
// Default: 0.000001m 0.01cm2
GV_MINIMAL_FACE_AREA,
// Specifies the treshold distance under which cartesian points are deemed equal
// Default: 0.00001m / 0.01mm
GV_POINT_EQUALITY_TOLERANCE,
// Specifies maximum number of faces for a shell to be sewed. Sewing shells
// that consist of many faces is really detrimental for the performance.
// Default: 1000
GV_MAX_FACES_TO_SEW,
// By default singular faces have no explicitly defined orientation, to
// force faces to be defined CounterClockWise, set this value greater than zero.
GV_FORCE_CCW_FACE_ORIENTATION,
// The length unit used the creation of TopoDS_Shapes, primarily affects the
// interpretation of IfcCartesianPoints and IfcVector magnitudes
// DefaultL 1.0
GV_LENGTH_UNIT,
// The plane angle unit used for the creation of TopoDS_Shapes, primarily affects
// the interpretation of IfcParamaterValues of IfcTrimmedCurves
// Default: -1.0 (= not set, fist try degrees, then radians)
GV_PLANEANGLE_UNIT,
// The precision used in boolean operations, setting this value too low results
// in artefacts and potentially modelling failures
// Default: 0.00001 (obtained from IfcGeometricRepresentationContext if available)
GV_PRECISION
};
const int DISABLE_OPENING_SUBTRACTIONS = 1 << 0;
const int DISABLE_OBJECT_PLACEMENT = 1 << 1;
const int SEW_SHELLS = 1 << 2;
const int CONVERT_TO_METERS = 1 << 3;
bool convert_wire_to_face(const TopoDS_Wire& wire, TopoDS_Face& face);
bool convert_curve_to_wire(const Handle(Geom_Curve)& curve, TopoDS_Wire& wire);
bool convert_shapes(const IfcUtil::IfcBaseClass* L, IfcRepresentationShapeItems& result);
bool is_shape_collection(const IfcUtil::IfcBaseClass* L);
bool convert_shape(const IfcUtil::IfcBaseClass* L, TopoDS_Shape& result);
bool convert_wire(const IfcUtil::IfcBaseClass* L, TopoDS_Wire& result);
bool convert_curve(const IfcUtil::IfcBaseClass* L, Handle(Geom_Curve)& result);
bool convert_face(const IfcUtil::IfcBaseClass* L, TopoDS_Shape& result);
bool convert_openings(const IfcSchema::IfcProduct::ptr entity, const IfcSchema::IfcRelVoidsElement::list& openings, const IfcRepresentationShapeItems& entity_shapes, const gp_Trsf& entity_trsf, IfcRepresentationShapeItems& cut_shapes);
bool convert_openings_fast(const IfcSchema::IfcProduct::ptr entity, const IfcSchema::IfcRelVoidsElement::list& openings, const IfcRepresentationShapeItems& entity_shapes, const gp_Trsf& entity_trsf, IfcRepresentationShapeItems& cut_shapes);
IfcSchema::IfcSurfaceStyleShading* get_surface_style(IfcSchema::IfcRepresentationItem* item);
bool create_solid_from_compound(const TopoDS_Shape& compound, TopoDS_Shape& solid);
bool is_compound(const TopoDS_Shape& shape);
bool is_convex(const TopoDS_Wire& wire);
TopoDS_Shape halfspace_from_plane(const gp_Pln& pln,const gp_Pnt& cent);
gp_Pln plane_from_face(const TopoDS_Face& face);
gp_Pnt point_above_plane(const gp_Pln& pln, bool agree=true);
const TopoDS_Shape& ensure_fit_for_subtraction(const TopoDS_Shape& shape, TopoDS_Shape& solid);
bool profile_helper(int numVerts, double* verts, int numFillets, int* filletIndices, double* filletRadii, gp_Trsf2d trsf, TopoDS_Shape& face);
double shape_volume(const TopoDS_Shape& s);
double face_area(const TopoDS_Face& f);
void apply_tolerance(TopoDS_Shape& s, double t);
void SetValue(GeomValue var, double value);
double GetValue(GeomValue var);
std::string create_brep_data(IfcSchema::IfcProduct* s, unsigned int settings);
void initialize_units_and_precision(IfcSchema::IfcProject* proj, double& unit_magnitude, std::string& unit_name);
bool fill_nonmanifold_wires_with_planar_faces(TopoDS_Shape& shape);
IfcSchema::IfcProductDefinitionShape* tesselate(TopoDS_Shape& shape, double deflection, IfcEntities es);
namespace Cache {
void Purge();
void PurgeShapeCache();
}
#include "IfcRegisterGeomHeader.h"
}
#endif