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a792a7e2c79d620ece84faad7d6cbf865c37127a
IfcOpenShell/src/ifcgeom/IfcGeomWires.cpp
T
Thomas Krijnen a792a7e2c7 Two simultaneous IfcGeom implementations
2017-12-18 15:25:09 +01:00

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/********************************************************************************
* *
* 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 <http://www.gnu.org/licenses/>. *
* *
********************************************************************************/
/********************************************************************************
* *
* Implementations of the various conversion functions defined in IfcRegister.h *
* *
********************************************************************************/
#define _USE_MATH_DEFINES
#include <cmath>
#include <gp_Pnt.hxx>
#include <gp_Vec.hxx>
#include <gp_Dir.hxx>
#include <gp_Pnt2d.hxx>
#include <gp_Vec2d.hxx>
#include <gp_Dir2d.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_Ax3.hxx>
#include <gp_Ax2d.hxx>
#include <gp_Pln.hxx>
#include <gp_Circ.hxx>
#include <TColgp_Array1OfPnt.hxx>
#include <TColgp_Array1OfPnt2d.hxx>
#include <TColStd_Array1OfReal.hxx>
#include <TColStd_Array1OfInteger.hxx>
#include <Geom_Line.hxx>
#include <Geom_Circle.hxx>
#include <Geom_Ellipse.hxx>
#include <Geom_TrimmedCurve.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>
#include <BRepBuilderAPI_MakeFace.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepBuilderAPI_MakeWire.hxx>
#include <BRepBuilderAPI_MakeShell.hxx>
#include <BRepBuilderAPI_MakeSolid.hxx>
#include <BRepBuilderAPI_MakePolygon.hxx>
#include <BRepBuilderAPI_MakeVertex.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Wire.hxx>
#include <TopoDS_Face.hxx>
#include <TopExp.hxx>
#include <TopExp_Explorer.hxx>
#include <TopLoc_Location.hxx>
#include <TopTools_ListOfShape.hxx>
#include <BRepAlgoAPI_Cut.hxx>
#include <BRepOffsetAPI_Sewing.hxx>
#include <BRepPrimAPI_MakePrism.hxx>
#include <BRepPrimAPI_MakeHalfSpace.hxx>
#include <BRepFilletAPI_MakeFillet2d.hxx>
#include <BRep_Tool.hxx>
#include <ShapeFix_Shape.hxx>
#include <ShapeFix_ShapeTolerance.hxx>
#include <ShapeFix_Solid.hxx>
#include <Geom_BSplineCurve.hxx>
#include <BRepTools_WireExplorer.hxx>
#include "../ifcgeom/IfcGeom.h"
bool IfcGeom::Kernel::convert(const IfcSchema::IfcCompositeCurve* l, TopoDS_Wire& wire) {
if ( getValue(GV_PLANEANGLE_UNIT)<0 ) {
Logger::Message(Logger::LOG_WARNING,"Creating a composite curve without unit information:",l);
// Temporarily pretend we do have unit information
setValue(GV_PLANEANGLE_UNIT,1.0);
bool succes_radians = false;
bool succes_degrees = false;
bool use_radians = false;
bool use_degrees = false;
// First try radians
TopoDS_Wire wire_radians, wire_degrees;
try {
succes_radians = IfcGeom::Kernel::convert(l,wire_radians);
} catch (const std::exception& e) {
Logger::Notice(e);
} catch (const Standard_Failure& e) {
if (e.GetMessageString() && strlen(e.GetMessageString())) {
Logger::Notice(e.GetMessageString());
} else {
Logger::Notice("Unknown error using radians");
}
} catch (...) {
Logger::Notice("Unknown error using radians");
}
// Now try degrees
setValue(GV_PLANEANGLE_UNIT,0.0174532925199433);
try {
succes_degrees = IfcGeom::Kernel::convert(l,wire_degrees);
} catch (const std::exception& e) {
Logger::Notice(e);
} catch (const Standard_Failure& e) {
if (e.GetMessageString() && strlen(e.GetMessageString())) {
Logger::Notice(e.GetMessageString());
} else {
Logger::Notice("Unknown error using degrees");
}
} catch (...) {
Logger::Notice("Unknown error using degrees");
}
// Restore to unknown unit state
setValue(GV_PLANEANGLE_UNIT,-1.0);
if ( succes_degrees && ! succes_radians ) {
use_degrees = true;
} else if ( succes_radians && ! succes_degrees ) {
use_radians = true;
} else if ( succes_radians && succes_degrees ) {
if ( wire_degrees.Closed() && ! wire_radians.Closed() ) {
use_degrees = true;
} else if ( wire_radians.Closed() && ! wire_degrees.Closed() ) {
use_radians = true;
} else {
// No heuristic left to prefer the one over the other,
// apparently both variants are equally succesful.
// The curve might be composed of only straight segments.
// Let's go with the wire created using radians as that
// at least is a SI unit.
use_radians = true;
}
}
if ( use_radians ) {
Logger::Message(Logger::LOG_NOTICE,"Used radians to create composite curve");
wire = wire_radians;
} else if ( use_degrees ) {
Logger::Message(Logger::LOG_NOTICE,"Used degrees to create composite curve");
wire = wire_degrees;
}
return use_radians || use_degrees;
}
BRepBuilderAPI_MakeWire w;
TopoDS_Vertex wire_first_vertex, wire_last_vertex, edge_first_vertex, edge_last_vertex;
IfcSchema::IfcCompositeCurveSegment::list::ptr segments = l->Segments();
const double precision_sq_2 = 2 * getValue(GV_PRECISION) * getValue(GV_PRECISION);
for(IfcSchema::IfcCompositeCurveSegment::list::it it = segments->begin(); it != segments->end(); ++it) {
IfcSchema::IfcCurve* curve = (*it)->ParentCurve();
TopoDS_Wire segment;
if (!convert_wire(curve, segment)) {
Logger::Message(Logger::LOG_ERROR, "Failed to convert curve:", curve);
continue;
}
if (!(*it)->SameSense()) {
segment.Reverse();
}
ShapeFix_ShapeTolerance FTol;
FTol.SetTolerance(segment, getValue(GV_PRECISION), TopAbs_WIRE);
TopExp::Vertices(segment, edge_first_vertex, edge_last_vertex);
if (it == segments->begin()) {
wire_first_vertex = edge_first_vertex;
} else {
gp_Pnt first = BRep_Tool::Pnt(edge_first_vertex);
gp_Pnt last = BRep_Tool::Pnt(wire_last_vertex);
Standard_Real distance = first.SquareDistance(last);
if (distance > precision_sq_2) {
w.Add(BRepBuilderAPI_MakeEdge(wire_last_vertex, edge_first_vertex));
Logger::Message(Logger::LOG_ERROR, "Closed gap on:", l);
}
}
w.Add(segment);
if ( w.Error() != BRepBuilderAPI_WireDone ) {
if (w.Error() == BRepBuilderAPI_NonManifoldWire) {
Logger::Message(Logger::LOG_ERROR, "Non-manifold curve segments:", l);
} else if (w.Error() == BRepBuilderAPI_DisconnectedWire) {
Logger::Message(Logger::LOG_ERROR, "Failed to join curve segments:", l);
gp_Pnt p1, p2;
int precision = 4;
double d = 0.;
if (!wire_last_vertex.IsNull()) {
p1 = BRep_Tool::Pnt(wire_last_vertex);
}
if (!edge_first_vertex.IsNull()) {
p2 = BRep_Tool::Pnt(edge_first_vertex);
}
if (!wire_last_vertex.IsNull() && !edge_first_vertex.IsNull()) {
d = p1.Distance(p2);
precision = ceil(-log10(d)) + 3;
}
if (!wire_last_vertex.IsNull()) {
std::stringstream ss;
ss << std::setprecision(precision) << "Last vertex at (" << p1.X() << " " << p1.Y() << " " << p1.Z() << ")";
Logger::Message(Logger::LOG_NOTICE, ss.str());
}
if (!edge_first_vertex.IsNull()) {
std::stringstream ss;
ss << std::setprecision(precision) << "Segment starts at (" << p2.X() << " " << p2.Y() << " " << p2.Z() << ")";
if (d > 0.) {
ss << ", distance " << d << " > precision " << std::fixed << getValue(GV_PRECISION) / 10.;
}
ss << " for:";
Logger::Message(Logger::LOG_NOTICE, ss.str(), (*it));
}
}
return false;
}
wire_last_vertex = edge_last_vertex;
}
gp_Pnt first = BRep_Tool::Pnt(edge_last_vertex);
gp_Pnt last = BRep_Tool::Pnt(wire_first_vertex);
Standard_Real distance = first.SquareDistance(last);
if (distance > precision_sq_2) {
w.Add(BRepBuilderAPI_MakeEdge(edge_last_vertex, wire_first_vertex));
Logger::Message(Logger::LOG_ERROR, "Closed gap on:", l);
}
wire = w.Wire();
return true;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcTrimmedCurve* l, TopoDS_Wire& wire) {
IfcSchema::IfcCurve* basis_curve = l->BasisCurve();
bool isConic = basis_curve->declaration().is(IfcSchema::IfcConic::Class());
double parameterFactor = isConic ? getValue(GV_PLANEANGLE_UNIT) : getValue(GV_LENGTH_UNIT);
Handle(Geom_Curve) curve;
if ( !convert_curve(basis_curve,curve) ) return false;
bool trim_cartesian = l->MasterRepresentation() != IfcSchema::IfcTrimmingPreference::IfcTrimmingPreference_PARAMETER;
IfcEntityList::ptr trims1 = l->Trim1();
IfcEntityList::ptr trims2 = l->Trim2();
unsigned sense_agreement = l->SenseAgreement() ? 0 : 1;
double flts[2];
gp_Pnt pnts[2];
bool has_flts[2] = {false,false};
bool has_pnts[2] = {false,false};
BRepBuilderAPI_MakeWire w;
for ( IfcEntityList::it it = trims1->begin(); it != trims1->end(); it ++ ) {
IfcUtil::IfcBaseClass* i = *it;
if ( i->declaration().is(IfcSchema::IfcCartesianPoint::Class()) ) {
IfcGeom::Kernel::convert((IfcSchema::IfcCartesianPoint*)i, pnts[sense_agreement] );
has_pnts[sense_agreement] = true;
} else if ( i->declaration().is(IfcSchema::IfcParameterValue::Class()) ) {
const double value = *((IfcSchema::IfcParameterValue*)i);
flts[sense_agreement] = value * parameterFactor;
has_flts[sense_agreement] = true;
}
}
for ( IfcEntityList::it it = trims2->begin(); it != trims2->end(); it ++ ) {
IfcUtil::IfcBaseClass* i = *it;
if ( i->declaration().is(IfcSchema::IfcCartesianPoint::Class()) ) {
IfcGeom::Kernel::convert((IfcSchema::IfcCartesianPoint*)i, pnts[1-sense_agreement] );
has_pnts[1-sense_agreement] = true;
} else if ( i->declaration().is(IfcSchema::IfcParameterValue::Class()) ) {
const double value = *((IfcSchema::IfcParameterValue*)i);
flts[1-sense_agreement] = value * parameterFactor;
has_flts[1-sense_agreement] = true;
}
}
trim_cartesian &= has_pnts[0] && has_pnts[1];
bool trim_cartesian_failed = !trim_cartesian;
if ( trim_cartesian ) {
if ( pnts[0].Distance(pnts[1]) < 2 * getValue(GV_PRECISION) ) {
Logger::Message(Logger::LOG_WARNING,"Skipping segment with length below tolerance level:",l);
return false;
}
ShapeFix_ShapeTolerance FTol;
TopoDS_Vertex v1 = BRepBuilderAPI_MakeVertex(pnts[0]);
TopoDS_Vertex v2 = BRepBuilderAPI_MakeVertex(pnts[1]);
FTol.SetTolerance(v1, getValue(GV_PRECISION), TopAbs_VERTEX);
FTol.SetTolerance(v2, getValue(GV_PRECISION), TopAbs_VERTEX);
BRepBuilderAPI_MakeEdge e (curve,v1,v2);
if ( ! e.IsDone() ) {
BRepBuilderAPI_EdgeError err = e.Error();
if ( err == BRepBuilderAPI_PointProjectionFailed ) {
Logger::Message(Logger::LOG_WARNING,"Point projection failed for:",l);
trim_cartesian_failed = true;
}
} else {
w.Add(e.Edge());
}
}
if ( (!trim_cartesian || trim_cartesian_failed) && (has_flts[0] && has_flts[1]) ) {
// The Geom_Line is constructed from a gp_Pnt and gp_Dir, whereas the IfcLine
// is defined by an IfcCartesianPoint and an IfcVector with Magnitude. Because
// the vector is normalised when passed to Geom_Line constructor the magnitude
// needs to be factored in with the IfcParameterValue here.
if ( basis_curve->declaration().is(IfcSchema::IfcLine::Class()) ) {
IfcSchema::IfcLine* line = static_cast<IfcSchema::IfcLine*>(basis_curve);
const double magnitude = line->Dir()->Magnitude();
flts[0] *= magnitude; flts[1] *= magnitude;
}
if ( basis_curve->declaration().is(IfcSchema::IfcEllipse::Class()) ) {
IfcSchema::IfcEllipse* ellipse = static_cast<IfcSchema::IfcEllipse*>(basis_curve);
double x = ellipse->SemiAxis1() * getValue(GV_LENGTH_UNIT);
double y = ellipse->SemiAxis2() * getValue(GV_LENGTH_UNIT);
const bool rotated = y > x;
if (rotated) {
flts[0] -= M_PI / 2.;
flts[1] -= M_PI / 2.;
}
}
if ( isConic && ALMOST_THE_SAME(fmod(flts[1]-flts[0],M_PI*2.),0.) ) {
w.Add(BRepBuilderAPI_MakeEdge(curve));
} else {
BRepBuilderAPI_MakeEdge e (curve,flts[0],flts[1]);
w.Add(e.Edge());
}
} else if ( trim_cartesian_failed && (has_pnts[0] && has_pnts[1]) ) {
w.Add(BRepBuilderAPI_MakeEdge(pnts[0],pnts[1]));
}
if (w.IsDone()) {
wire = w.Wire();
// When SenseAgreement == .F. the vertices above have been reversed to
// comply with the direction of conical curves. The ordering of the
// vertices then still needs to be reversed in order to have begin and
// end vertex consistent with IFC.
if (sense_agreement != 0) { // .F.
wire.Reverse();
}
return true;
} else {
return false;
}
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcPolyline* l, TopoDS_Wire& result) {
IfcSchema::IfcCartesianPoint::list::ptr points = l->Points();
// Parse and store the points in a sequence
TColgp_SequenceOfPnt polygon;
for(IfcSchema::IfcCartesianPoint::list::it it = points->begin(); it != points->end(); ++ it) {
gp_Pnt pnt;
IfcGeom::Kernel::convert(*it, pnt);
polygon.Append(pnt);
}
// Remove points that are too close to one another
remove_duplicate_points_from_loop(polygon, false);
BRepBuilderAPI_MakePolygon w;
for (int i = 1; i <= polygon.Length(); ++i) {
w.Add(polygon.Value(i));
}
result = w.Wire();
return true;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcPolyLoop* l, TopoDS_Wire& result) {
IfcSchema::IfcCartesianPoint::list::ptr points = l->Polygon();
// Parse and store the points in a sequence
TColgp_SequenceOfPnt polygon;
for(IfcSchema::IfcCartesianPoint::list::it it = points->begin(); it != points->end(); ++ it) {
gp_Pnt pnt;
IfcGeom::Kernel::convert(*it, pnt);
polygon.Append(pnt);
}
// A loop should consist of at least three vertices
int original_count = polygon.Length();
if (original_count < 3) {
Logger::Message(Logger::LOG_ERROR, "Not enough edges for:", l);
return false;
}
// Remove points that are too close to one another
remove_duplicate_points_from_loop(polygon, true);
int count = polygon.Length();
if (original_count - count != 0) {
std::stringstream ss; ss << (original_count - count) << " edges removed for:";
Logger::Message(Logger::LOG_WARNING, ss.str(), l);
}
if (count < 3) {
Logger::Message(Logger::LOG_ERROR, "Not enough edges for:", l);
return false;
}
BRepBuilderAPI_MakePolygon w;
for (int i = 1; i <= polygon.Length(); ++i) {
w.Add(polygon.Value(i));
}
w.Close();
result = w.Wire();
return true;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcArbitraryOpenProfileDef* l, TopoDS_Wire& result) {
return convert_wire(l->Curve(), result);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcEdgeCurve* l, TopoDS_Wire& result) {
IfcSchema::IfcPoint* pnt1 = ((IfcSchema::IfcVertexPoint*) l->EdgeStart())->VertexGeometry();
IfcSchema::IfcPoint* pnt2 = ((IfcSchema::IfcVertexPoint*) l->EdgeEnd())->VertexGeometry();
if (!pnt1->declaration().is(IfcSchema::IfcCartesianPoint::Class()) || !pnt2->declaration().is(IfcSchema::IfcCartesianPoint::Class())) {
Logger::Message(Logger::LOG_ERROR, "Only IfcCartesianPoints are supported for VertexGeometry", l);
return false;
}
gp_Pnt p1, p2;
if (!IfcGeom::Kernel::convert(((IfcSchema::IfcCartesianPoint*)pnt1), p1) ||
!IfcGeom::Kernel::convert(((IfcSchema::IfcCartesianPoint*)pnt2), p2))
{
return false;
}
BRepBuilderAPI_MakeWire mw;
Handle_Geom_Curve crv;
// The lack of a clear separation between topological and geometrical entities
// is starting to get problematic. If the underlying curve is bounded it is
// assumed that a topological wire can be crafted from it. After which an
// attempt is made to reconstruct it from the individual curves and the vertices
// of the IfcEdgeCurve.
const bool is_bounded = l->EdgeGeometry()->declaration().is(IfcSchema::IfcBoundedCurve::Class());
if (!is_bounded && convert_curve(l->EdgeGeometry(), crv)) {
mw.Add(BRepBuilderAPI_MakeEdge(crv, p1, p2));
result = mw;
return true;
} else if (is_bounded && convert_wire(l->EdgeGeometry(), result)) {
if (!l->SameSense()) {
result.Reverse();
}
bool first = true;
TopExp_Explorer exp(result, TopAbs_EDGE);
while (exp.More()) {
const TopoDS_Edge& ed = TopoDS::Edge(exp.Current());
Standard_Real u1, u2;
Handle(Geom_Curve) ecrv = BRep_Tool::Curve(ed, u1, u2);
exp.Next();
const bool last = !exp.More();
gp_Pnt a, b;
if (first && last) {
a = p1;
b = p2;
} else if (first) {
a = p1;
ecrv->D0(u2, b);
} else if (last) {
ecrv->D0(u1, a);
b = p2;
} else {
mw.Add(BRepBuilderAPI_MakeEdge(ecrv, u1, u2));
first = false;
continue;
}
BRep_Builder builder;
TopoDS_Vertex v1, v2;
/// @todo project first and emit warnings accordingly
builder.MakeVertex(v1, a, getValue(GV_PRECISION));
builder.MakeVertex(v2, b, getValue(GV_PRECISION));
mw.Add(BRepBuilderAPI_MakeEdge(ecrv, v1, v2));
first = false;
}
result = mw;
return true;
} else {
return false;
}
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcEdgeLoop* l, TopoDS_Wire& result) {
IfcSchema::IfcOrientedEdge::list::ptr li = l->EdgeList();
BRepBuilderAPI_MakeWire mw;
for (IfcSchema::IfcOrientedEdge::list::it it = li->begin(); it != li->end(); ++it) {
TopoDS_Wire w;
if (convert_wire(*it, w)) {
mw.Add(TopoDS::Edge(TopoDS_Iterator(w).Value()));
}
}
result = mw;
return true;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcEdge* l, TopoDS_Wire& result) {
if (!l->EdgeStart()->declaration().is(IfcSchema::IfcVertexPoint::Class()) || !l->EdgeEnd()->declaration().is(IfcSchema::IfcVertexPoint::Class())) {
Logger::Message(Logger::LOG_ERROR, "Only IfcVertexPoints are supported for EdgeStart and -End", l);
return false;
}
IfcSchema::IfcPoint* pnt1 = ((IfcSchema::IfcVertexPoint*) l->EdgeStart())->VertexGeometry();
IfcSchema::IfcPoint* pnt2 = ((IfcSchema::IfcVertexPoint*) l->EdgeEnd())->VertexGeometry();
if (!pnt1->declaration().is(IfcSchema::IfcCartesianPoint::Class()) || !pnt2->declaration().is(IfcSchema::IfcCartesianPoint::Class())) {
Logger::Message(Logger::LOG_ERROR, "Only IfcCartesianPoints are supported for VertexGeometry", l);
return false;
}
gp_Pnt p1, p2;
if (!convert(((IfcSchema::IfcCartesianPoint*)pnt1), p1) ||
!convert(((IfcSchema::IfcCartesianPoint*)pnt2), p2))
{
return false;
}
BRepBuilderAPI_MakeWire mw;
mw.Add(BRepBuilderAPI_MakeEdge(p1, p2));
result = mw.Wire();
return true;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcOrientedEdge* l, TopoDS_Wire& result) {
if (convert_wire(l->EdgeElement(), result)) {
if (!l->Orientation()) {
result.Reverse();
}
return true;
} else {
return false;
}
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcSubedge* l, TopoDS_Wire& result) {
TopoDS_Wire temp;
if (convert_wire(l->ParentEdge(), result) && convert((IfcSchema::IfcEdge*) l, temp)) {
TopExp_Explorer exp(result, TopAbs_EDGE);
TopoDS_Edge edge = TopoDS::Edge(exp.Current());
Standard_Real u1, u2;
Handle(Geom_Curve) crv = BRep_Tool::Curve(edge, u1, u2);
TopoDS_Vertex v1, v2;
TopExp::Vertices(temp, v1, v2);
BRepBuilderAPI_MakeWire mw;
mw.Add(BRepBuilderAPI_MakeEdge(crv, v1, v2));
result = mw.Wire();
return true;
} else {
return false;
}
}
#ifdef USE_IFC4
#include <GC_MakeCircle.hxx>
bool IfcGeom::Kernel::convert(const IfcSchema::IfcIndexedPolyCurve* l, TopoDS_Wire& result) {
IfcSchema::IfcCartesianPointList* point_list = l->Points();
std::vector< std::vector<double> > coordinates;
if (point_list->as<IfcSchema::IfcCartesianPointList2D>()) {
coordinates = point_list->as<IfcSchema::IfcCartesianPointList2D>()->CoordList();
} else if (point_list->as<IfcSchema::IfcCartesianPointList3D>()) {
coordinates = point_list->as<IfcSchema::IfcCartesianPointList3D>()->CoordList();
}
std::vector<gp_Pnt> points;
points.reserve(coordinates.size());
for (std::vector< std::vector<double> >::const_iterator it = coordinates.begin(); it != coordinates.end(); ++it) {
const std::vector<double>& coords = *it;
points.push_back(gp_Pnt(
coords.size() < 1 ? 0. : coords[0] * getValue(GV_LENGTH_UNIT),
coords.size() < 2 ? 0. : coords[1] * getValue(GV_LENGTH_UNIT),
coords.size() < 3 ? 0. : coords[2] * getValue(GV_LENGTH_UNIT)));
}
int max_index = points.size();
BRepBuilderAPI_MakeWire w;
IfcEntityList::ptr segments = l->Segments();
for (IfcEntityList::it it = segments->begin(); it != segments->end(); ++it) {
IfcUtil::IfcBaseClass* segment = *it;
if (segment->declaration().is(IfcSchema::IfcLineIndex::Class())) {
IfcSchema::IfcLineIndex* line = (IfcSchema::IfcLineIndex*) segment;
std::vector<int> indices = *line;
gp_Pnt previous;
for (std::vector<int>::const_iterator jt = indices.begin(); jt != indices.end(); ++jt) {
if (*jt < 1 || *jt > max_index) {
throw IfcParse::IfcException("IfcIndexedPolyCurve index out of bounds for index " + boost::lexical_cast<std::string>(*jt));
}
const gp_Pnt& current = points[*jt - 1];
if (jt != indices.begin()) {
w.Add(BRepBuilderAPI_MakeEdge(previous, current));
}
previous = current;
}
} else if (segment->declaration().is(IfcSchema::IfcArcIndex::Class())) {
IfcSchema::IfcArcIndex* arc = (IfcSchema::IfcArcIndex*) segment;
std::vector<int> indices = *arc;
if (indices.size() != 3) {
throw IfcParse::IfcException("Invalid IfcArcIndex encountered");
}
for (int i = 0; i < 3; ++i) {
const int& idx = indices[i];
if (idx < 1 || idx > max_index) {
throw IfcParse::IfcException("IfcIndexedPolyCurve index out of bounds for index " + boost::lexical_cast<std::string>(idx));
}
}
const gp_Pnt& a = points[indices[0] - 1];
const gp_Pnt& b = points[indices[1] - 1];
const gp_Pnt& c = points[indices[2] - 1];
Handle(Geom_Circle) circ = GC_MakeCircle(a, b, c).Value();
w.Add(BRepBuilderAPI_MakeEdge(circ, a, c));
} else {
throw IfcParse::IfcException("Unexpected IfcIndexedPolyCurve segment of type " + segment->declaration().name());
}
}
result = w.Wire();
return true;
}
#endif
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