/********************************************************************************
* *
* 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 . *
* *
********************************************************************************/
/********************************************************************************
* *
* Implementations of the various conversion functions defined in IfcRegister.h *
* *
********************************************************************************/
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#ifdef USE_IFC4
#include
#include
#include
#include
#endif
#include "../ifcgeom/IfcGeom.h"
bool IfcGeom::Kernel::convert(const IfcSchema::IfcFace* l, TopoDS_Shape& face) {
IfcSchema::IfcFaceBound::list::ptr bounds = l->Bounds();
Handle(Geom_Surface) face_surface;
const bool is_face_surface = l->is(IfcSchema::Type::IfcFaceSurface);
if (is_face_surface) {
IfcSchema::IfcFaceSurface* fs = (IfcSchema::IfcFaceSurface*) l;
fs->FaceSurface();
// FIXME: Surfaces are interpreted as a TopoDS_Shape
TopoDS_Shape surface_shape;
if (!convert_shape(fs->FaceSurface(), surface_shape)) return false;
// FIXME: Assert this obtaines the only face
TopExp_Explorer exp(surface_shape, TopAbs_FACE);
if (!exp.More()) return false;
TopoDS_Face surface = TopoDS::Face(exp.Current());
face_surface = BRep_Tool::Surface(surface);
}
const int num_bounds = bounds->size();
int num_outer_bounds = 0;
for (IfcSchema::IfcFaceBound::list::it it = bounds->begin(); it != bounds->end(); ++it) {
IfcSchema::IfcFaceBound* bound = *it;
if (bound->is(IfcSchema::Type::IfcFaceOuterBound)) num_outer_bounds ++;
}
// The number of outer bounds should be one according to the schema. Also Open Cascade
// expects this, but it is not strictly checked. Regardless, if the number is greater,
// the face will still be processed as long as there are no holes. A compound of faces
// is returned in that case.
if (num_bounds > 1 && num_outer_bounds > 1 && num_bounds != num_outer_bounds) {
Logger::Message(Logger::LOG_ERROR, "Invalid configuration of boundaries for:", l->entity);
return false;
}
TopoDS_Compound compound;
BRep_Builder builder;
if (num_outer_bounds > 1) {
builder.MakeCompound(compound);
}
TopTools_DataMapOfShapeInteger wire_senses;
// The builder is initialized on the heap because of the various different moments
// of initialization depending on the configuration of surfaces and boundaries.
BRepBuilderAPI_MakeFace* mf = 0;
bool success = false;
int processed = 0;
for (int process_interior = 0; process_interior <= 1; ++process_interior) {
for (IfcSchema::IfcFaceBound::list::it it = bounds->begin(); it != bounds->end(); ++it) {
IfcSchema::IfcFaceBound* bound = *it;
IfcSchema::IfcLoop* loop = bound->Bound();
bool same_sense = bound->Orientation();
const bool is_interior =
!bound->is(IfcSchema::Type::IfcFaceOuterBound) &&
(num_bounds > 1) &&
(num_outer_bounds < num_bounds);
// The exterior face boundary is processed first
if (is_interior == !process_interior) continue;
TopoDS_Wire wire;
if (!convert_wire(loop, wire)) {
Logger::Message(Logger::LOG_ERROR, "Failed to process face boundary loop", loop->entity);
delete mf;
return false;
}
/*
The approach below does not result in a significant speed-up
if (loop->is(IfcSchema::Type::IfcPolyLoop) && processed == 0 && face_surface.IsNull()) {
IfcSchema::IfcPolyLoop* polyloop = (IfcSchema::IfcPolyLoop*) loop;
IfcSchema::IfcCartesianPoint::list::ptr points = polyloop->Polygon();
if (points->size() == 3) {
// Help Open Cascade by finding the plane more efficiently
IfcSchema::IfcCartesianPoint::list::it point_iterator = points->begin();
gp_Pnt a, b, c;
convert(*point_iterator++, a);
convert(*point_iterator++, b);
convert(*point_iterator++, c);
const gp_XYZ ab = (b.XYZ() - a.XYZ());
const gp_XYZ ac = (c.XYZ() - a.XYZ());
const gp_Vec cross = ab.Crossed(ac);
if (cross.SquareMagnitude() > ALMOST_ZERO) {
const gp_Dir n = cross;
face_surface = new Geom_Plane(a, n);
}
}
}
*/
if (!same_sense) {
wire.Reverse();
}
wire_senses.Bind(wire.Oriented(TopAbs_FORWARD), same_sense ? TopAbs_FORWARD : TopAbs_REVERSED);
bool flattened_wire = false;
if (!mf) {
process_wire:
if (face_surface.IsNull()) {
if (count(wire, TopAbs_EDGE) > 128) {
// tfk: optimization find the underlying surface ourselves since it's going
// to be planar in IFC if no explicit surface is given. Should we always do this?
gp_Pln pln;
approximate_plane_through_wire(wire, pln);
mf = new BRepBuilderAPI_MakeFace(pln, wire, true);
} else {
mf = new BRepBuilderAPI_MakeFace(wire);
}
} else {
/// @todo check necessity of false here
mf = new BRepBuilderAPI_MakeFace(face_surface, wire, false);
}
/* BRepBuilderAPI_FaceError er = mf->Error();
if (er == BRepBuilderAPI_NotPlanar) {
ShapeFix_ShapeTolerance FTol;
FTol.SetTolerance(wire, getValue(GV_PRECISION), TopAbs_WIRE);
delete mf;
mf = new BRepBuilderAPI_MakeFace(wire);
} */
if (mf->IsDone()) {
TopoDS_Face outer_face_bound = mf->Face();
// In case of (non-planar) face surface, p-curves need to be computed.
// For planar faces, Open Cascade generates p-curves on the fly.
if (!face_surface.IsNull()) {
TopExp_Explorer exp(outer_face_bound, TopAbs_EDGE);
for (; exp.More(); exp.Next()) {
const TopoDS_Edge& edge = TopoDS::Edge(exp.Current());
ShapeFix_Edge fix_edge;
fix_edge.FixAddPCurve(edge, outer_face_bound, false, getValue(GV_PRECISION));
}
}
if (BRepCheck_Face(outer_face_bound).OrientationOfWires() == BRepCheck_BadOrientationOfSubshape) {
wire.Reverse();
same_sense = !same_sense;
delete mf;
if (face_surface.IsNull()) {
mf = new BRepBuilderAPI_MakeFace(wire);
} else {
mf = new BRepBuilderAPI_MakeFace(face_surface, wire);
}
ShapeFix_Face fix(mf->Face());
fix.FixOrientation();
outer_face_bound = fix.Face();
}
if (num_outer_bounds > 1) {
builder.Add(compound, outer_face_bound);
delete mf; mf = 0;
} else if (num_bounds > 1) {
// Reinitialize the builder to the outer face
// bound in order to add holes more robustly.
delete mf;
// TODO: What about the face_surface?
mf = new BRepBuilderAPI_MakeFace(outer_face_bound);
} else {
face = outer_face_bound;
success = true;
}
} else {
const bool non_planar = mf->Error() == BRepBuilderAPI_NotPlanar;
delete mf;
const bool sewing_shells = getValue(GV_MAX_FACES_TO_SEW) > -1;
if (non_planar && sewing_shells && bounds->size() == 1 && face_surface.IsNull()) {
Logger::Message(Logger::LOG_ERROR, "Triangulating face boundary", bound->entity);
// When creating a solid, flatting the boundary only postpones the issue to
// creating a topological manifold out of the individual faces.
TopTools_ListOfShape face_list;
triangulate_wire(wire, face_list);
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
TopTools_ListIteratorOfListOfShape face_iterator;
for (face_iterator.Initialize(face_list); face_iterator.More(); face_iterator.Next()) {
builder.Add(compound, face_iterator.Value());
}
face = compound;
return true;
}
if (!non_planar || flattened_wire || !flatten_wire(wire)) {
Logger::Message(Logger::LOG_ERROR, "Failed to process face boundary", bound->entity);
return false;
} else {
Logger::Message(Logger::LOG_ERROR, "Flattening face boundary", bound->entity);
flattened_wire = true;
goto process_wire;
}
}
} else {
mf->Add(wire);
}
processed ++;
}
}
if (!success) {
success = processed == num_bounds;
if (success) {
if (num_outer_bounds > 1) {
face = compound;
} else {
success = success && mf->IsDone();
if (success) {
face = mf->Face();
}
ShapeFix_Face sfs(TopoDS::Face(face));
TopTools_DataMapOfShapeListOfShape wire_map;
sfs.FixOrientation(wire_map);
TopoDS_Iterator jt(face, false);
for (; jt.More(); jt.Next()) {
const TopoDS_Wire& w = TopoDS::Wire(jt.Value());
if (wire_map.IsBound(w)) {
const TopTools_ListOfShape& shapes = wire_map.Find(w);
TopTools_ListIteratorOfListOfShape it(shapes);
for (; it.More(); it.Next()) {
// Apparently the wire got reversed, so register it with opposite orientation in the map
wire_senses.Bind(it.Value(), wire_senses.Find(w) == TopAbs_FORWARD ? TopAbs_REVERSED : TopAbs_FORWARD);
}
}
}
face = TopoDS::Face(sfs.Face());
}
}
}
if (success) {
// If the wires are reversed the face needs to be reversed as well in order
// to maintain the counter-clock-wise ordering of the bounding wire's vertices.
if (num_bounds == 1 || true) {
bool all_reversed = true;
TopoDS_Iterator jt(face, false);
for (; jt.More(); jt.Next()) {
const TopoDS_Wire& w = TopoDS::Wire(jt.Value());
if (!wire_senses.IsBound(w.Oriented(TopAbs_FORWARD)) || (w.Orientation() == wire_senses.Find(w.Oriented(TopAbs_FORWARD)))) {
all_reversed = false;
}
}
if (all_reversed) {
face.Reverse();
}
}
}
delete mf;
return success;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcArbitraryClosedProfileDef* l, TopoDS_Shape& face) {
TopoDS_Wire wire;
if ( ! convert_wire(l->OuterCurve(),wire) ) return false;
TopoDS_Face f;
bool success = convert_wire_to_face(wire, f);
if (success) face = f;
return success;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcArbitraryProfileDefWithVoids* l, TopoDS_Shape& face) {
TopoDS_Wire profile;
if ( ! convert_wire(l->OuterCurve(),profile) ) return false;
BRepBuilderAPI_MakeFace mf(profile);
IfcSchema::IfcCurve::list::ptr voids = l->InnerCurves();
for( IfcSchema::IfcCurve::list::it it = voids->begin(); it != voids->end(); ++ it ) {
TopoDS_Wire hole;
if ( convert_wire(*it,hole) ) {
mf.Add(hole);
}
}
ShapeFix_Shape sfs(mf.Face());
sfs.Perform();
face = TopoDS::Face(sfs.Shape());
return true;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcRectangleProfileDef* l, TopoDS_Shape& face) {
const double x = l->XDim() / 2.0f * getValue(GV_LENGTH_UNIT);
const double y = l->YDim() / 2.0f * getValue(GV_LENGTH_UNIT);
if ( x < ALMOST_ZERO || y < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords[8] = {-x,-y,x,-y,x,y,-x,y};
return profile_helper(4,coords,0,0,0,trsf2d,face);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcRoundedRectangleProfileDef* l, TopoDS_Shape& face) {
const double x = l->XDim() / 2.0f * getValue(GV_LENGTH_UNIT);
const double y = l->YDim() / 2.0f * getValue(GV_LENGTH_UNIT);
const double r = l->RoundingRadius() * getValue(GV_LENGTH_UNIT);
if ( x < ALMOST_ZERO || y < ALMOST_ZERO || r < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords[8] = {-x,-y, x,-y, x,y, -x,y};
int fillets[4] = {0,1,2,3};
double radii[4] = {r,r,r,r};
return profile_helper(4,coords,4,fillets,radii,trsf2d,face);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcRectangleHollowProfileDef* l, TopoDS_Shape& face) {
const double x = l->XDim() / 2.0f * getValue(GV_LENGTH_UNIT);
const double y = l->YDim() / 2.0f * getValue(GV_LENGTH_UNIT);
const double d = l->WallThickness() * getValue(GV_LENGTH_UNIT);
const bool fr1 = l->hasOuterFilletRadius();
const bool fr2 = l->hasInnerFilletRadius();
const double r1 = fr1 ? l->OuterFilletRadius() * getValue(GV_LENGTH_UNIT) : 0.;
const double r2 = fr2 ? l->InnerFilletRadius() * getValue(GV_LENGTH_UNIT) : 0.;
if ( x < ALMOST_ZERO || y < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
TopoDS_Face f1;
TopoDS_Face f2;
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords1[8] = {-x ,-y, x ,-y, x, y, -x, y };
double coords2[8] = {-x+d,-y+d, x-d,-y+d, x-d,y-d, -x+d,y-d};
double radii1[4] = {r1,r1,r1,r1};
double radii2[4] = {r2,r2,r2,r2};
int fillets[4] = {0,1,2,3};
bool s1 = profile_helper(4,coords1,fr1 ? 4 : 0,fillets,radii1,trsf2d,f1);
bool s2 = profile_helper(4,coords2,fr2 ? 4 : 0,fillets,radii2,trsf2d,f2);
if (!s1 || !s2) return false;
TopExp_Explorer exp1(f1, TopAbs_WIRE);
TopExp_Explorer exp2(f2, TopAbs_WIRE);
TopoDS_Wire w1 = TopoDS::Wire(exp1.Current());
TopoDS_Wire w2 = TopoDS::Wire(exp2.Current());
BRepBuilderAPI_MakeFace mf(w1, false);
mf.Add(w2);
ShapeFix_Shape sfs(mf.Face());
sfs.Perform();
face = TopoDS::Face(sfs.Shape());
return true;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcTrapeziumProfileDef* l, TopoDS_Shape& face) {
const double x1 = l->BottomXDim() / 2.0f * getValue(GV_LENGTH_UNIT);
const double w = l->TopXDim() * getValue(GV_LENGTH_UNIT);
const double dx = l->TopXOffset() * getValue(GV_LENGTH_UNIT);
const double y = l->YDim() / 2.0f * getValue(GV_LENGTH_UNIT);
if ( x1 < ALMOST_ZERO || w < ALMOST_ZERO || y < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords[8] = {-x1,-y, x1,-y, dx+w-x1,y, dx-x1,y};
return profile_helper(4,coords,0,0,0,trsf2d,face);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcIShapeProfileDef* l, TopoDS_Shape& face) {
const double x1 = l->OverallWidth() / 2.0f * getValue(GV_LENGTH_UNIT);
const double y = l->OverallDepth() / 2.0f * getValue(GV_LENGTH_UNIT);
const double d1 = l->WebThickness() / 2.0f * getValue(GV_LENGTH_UNIT);
const double dy1 = l->FlangeThickness() * getValue(GV_LENGTH_UNIT);
bool doFillet1 = l->hasFilletRadius();
double f1 = 0.;
if ( doFillet1 ) {
f1 = l->FilletRadius() * getValue(GV_LENGTH_UNIT);
}
bool doFillet2 = doFillet1;
double x2 = x1, dy2 = dy1, f2 = f1;
if (l->is(IfcSchema::Type::IfcAsymmetricIShapeProfileDef)) {
IfcSchema::IfcAsymmetricIShapeProfileDef* assym = (IfcSchema::IfcAsymmetricIShapeProfileDef*) l;
x2 = assym->TopFlangeWidth() / 2. * getValue(GV_LENGTH_UNIT);
doFillet2 = assym->hasTopFlangeFilletRadius();
if (doFillet2) {
f2 = assym->TopFlangeFilletRadius() * getValue(GV_LENGTH_UNIT);
}
if (assym->hasTopFlangeThickness()) {
dy2 = assym->TopFlangeThickness() * getValue(GV_LENGTH_UNIT);
}
}
if ( x1 < ALMOST_ZERO || x2 < ALMOST_ZERO || y < ALMOST_ZERO || d1 < ALMOST_ZERO || dy1 < ALMOST_ZERO || dy2 < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords[24] = {-x1,-y, x1,-y, x1,-y+dy1, d1,-y+dy1, d1,y-dy2, x2,y-dy2, x2,y, -x2,y, -x2,y-dy2, -d1,y-dy2, -d1,-y+dy1, -x1,-y+dy1};
int fillets[4] = {3,4,9,10};
double radii[4] = {f1,f1,f2,f2};
return profile_helper(12,coords,(doFillet1||doFillet2) ? 4 : 0,fillets,radii,trsf2d,face);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcZShapeProfileDef* l, TopoDS_Shape& face) {
const double x = l->FlangeWidth() * getValue(GV_LENGTH_UNIT);
const double y = l->Depth() / 2.0f * getValue(GV_LENGTH_UNIT);
const double dx = l->WebThickness() / 2.0f * getValue(GV_LENGTH_UNIT);
const double dy = l->FlangeThickness() * getValue(GV_LENGTH_UNIT);
bool doFillet = l->hasFilletRadius();
bool doEdgeFillet = l->hasEdgeRadius();
double f1 = 0.;
double f2 = 0.;
if ( doFillet ) {
f1 = l->FilletRadius() * getValue(GV_LENGTH_UNIT);
}
if ( doEdgeFillet ) {
f2 = l->EdgeRadius() * getValue(GV_LENGTH_UNIT);
}
if ( x == 0.0f || y == 0.0f || dx == 0.0f || dy == 0.0f ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords[16] = {-dx,-y, x,-y, x,-y+dy, dx,-y+dy, dx,y, -x,y, -x,y-dy, -dx,y-dy};
int fillets[4] = {2,3,6,7};
double radii[4] = {f2,f1,f2,f1};
return profile_helper(8,coords,(doFillet || doEdgeFillet) ? 4 : 0,fillets,radii,trsf2d,face);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcCShapeProfileDef* l, TopoDS_Shape& face) {
const double y = l->Depth() / 2.0f * getValue(GV_LENGTH_UNIT);
const double x = l->Width() / 2.0f * getValue(GV_LENGTH_UNIT);
const double d1 = l->WallThickness() * getValue(GV_LENGTH_UNIT);
const double d2 = l->Girth() * getValue(GV_LENGTH_UNIT);
bool doFillet = l->hasInternalFilletRadius();
double f1 = 0;
double f2 = 0;
if ( doFillet ) {
f1 = l->InternalFilletRadius() * getValue(GV_LENGTH_UNIT);
f2 = f1 + d1;
}
if ( x < ALMOST_ZERO || y < ALMOST_ZERO || d1 < ALMOST_ZERO || d2 < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords[24] = {-x,-y,x,-y,x,-y+d2,x-d1,-y+d2,x-d1,-y+d1,-x+d1,-y+d1,-x+d1,y-d1,x-d1,y-d1,x-d1,y-d2,x,y-d2,x,y,-x,y};
int fillets[8] = {0,1,4,5,6,7,10,11};
double radii[8] = {f2,f2,f1,f1,f1,f1,f2,f2};
return profile_helper(12,coords,doFillet ? 8 : 0,fillets,radii,trsf2d,face);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcLShapeProfileDef* l, TopoDS_Shape& face) {
const bool hasSlope = l->hasLegSlope();
const bool doEdgeFillet = l->hasEdgeRadius();
const bool doFillet = l->hasFilletRadius();
const double y = l->Depth() / 2.0f * getValue(GV_LENGTH_UNIT);
const double x = (l->hasWidth() ? l->Width() : l->Depth()) / 2.0f * getValue(GV_LENGTH_UNIT);
const double d = l->Thickness() * getValue(GV_LENGTH_UNIT);
const double slope = hasSlope ? (l->LegSlope() * getValue(GV_PLANEANGLE_UNIT)) : 0.;
double f1 = 0.0f;
double f2 = 0.0f;
if (doFillet) {
f1 = l->FilletRadius() * getValue(GV_LENGTH_UNIT);
}
if ( doEdgeFillet) {
f2 = l->EdgeRadius() * getValue(GV_LENGTH_UNIT);
}
if ( x < ALMOST_ZERO || y < ALMOST_ZERO || d < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
double xx = -x+d;
double xy = -y+d;
double dy1 = 0.;
double dy2 = 0.;
double dx1 = 0.;
double dx2 = 0.;
if (hasSlope) {
dy1 = tan(slope) * x;
dy2 = tan(slope) * (x - d);
dx1 = tan(slope) * y;
dx2 = tan(slope) * (y - d);
const double x1s = x; const double y1s = -y + d - dy1;
const double x1e = -x + d; const double y1e = -y + d + dy2;
const double x2s = -x + d - dx1; const double y2s = y;
const double x2e = -x + d + dx2; const double y2e = -y + d;
const double a1 = y1e - y1s;
const double b1 = x1s - x1e;
const double c1 = a1*x1s + b1*y1s;
const double a2 = y2e - y2s;
const double b2 = x2s - x2e;
const double c2 = a2*x2s + b2*y2s;
const double det = a1*b2 - a2*b1;
if (ALMOST_THE_SAME(det, 0.)) {
Logger::Message(Logger::LOG_NOTICE, "Legs do not intersect for:",l->entity);
return false;
}
xx = (b2*c1 - b1*c2) / det;
xy = (a1*c2 - a2*c1) / det;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords[12] = {-x,-y, x,-y, x,-y+d-dy1, xx, xy, -x+d-dx1,y, -x,y};
int fillets[3] = {2,3,4};
double radii[3] = {f2,f1,f2};
return profile_helper(6,coords,doFillet ? 3 : 0,fillets,radii,trsf2d,face);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcUShapeProfileDef* l, TopoDS_Shape& face) {
const bool doEdgeFillet = l->hasEdgeRadius();
const bool doFillet = l->hasFilletRadius();
const bool hasSlope = l->hasFlangeSlope();
const double y = l->Depth() / 2.0f * getValue(GV_LENGTH_UNIT);
const double x = l->FlangeWidth() / 2.0f * getValue(GV_LENGTH_UNIT);
const double d1 = l->WebThickness() * getValue(GV_LENGTH_UNIT);
const double d2 = l->FlangeThickness() * getValue(GV_LENGTH_UNIT);
const double slope = hasSlope ? (l->FlangeSlope() * getValue(GV_PLANEANGLE_UNIT)) : 0.;
double dy1 = 0.0f;
double dy2 = 0.0f;
double f1 = 0.0f;
double f2 = 0.0f;
if (doFillet) {
f1 = l->FilletRadius() * getValue(GV_LENGTH_UNIT);
}
if (doEdgeFillet) {
f2 = l->EdgeRadius() * getValue(GV_LENGTH_UNIT);
}
if (hasSlope) {
dy1 = (x - d1) * tan(slope);
dy2 = x * tan(slope);
}
if ( x < ALMOST_ZERO || y < ALMOST_ZERO || d1 < ALMOST_ZERO || d2 < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords[16] = {-x,-y, x,-y, x,-y+d2-dy2, -x+d1,-y+d2+dy1, -x+d1,y-d2-dy1, x,y-d2+dy2, x,y, -x,y};
int fillets[4] = {2,3,4,5};
double radii[4] = {f2,f1,f1,f2};
return profile_helper(8, coords, (doFillet || doEdgeFillet) ? 4 : 0, fillets, radii, trsf2d, face);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcTShapeProfileDef* l, TopoDS_Shape& face) {
const bool doFlangeEdgeFillet = l->hasFlangeEdgeRadius();
const bool doWebEdgeFillet = l->hasWebEdgeRadius();
const bool doFillet = l->hasFilletRadius();
const bool hasFlangeSlope = l->hasFlangeSlope();
const bool hasWebSlope = l->hasWebSlope();
const double y = l->Depth() / 2.0f * getValue(GV_LENGTH_UNIT);
const double x = l->FlangeWidth() / 2.0f * getValue(GV_LENGTH_UNIT);
const double d1 = l->WebThickness() * getValue(GV_LENGTH_UNIT);
const double d2 = l->FlangeThickness() * getValue(GV_LENGTH_UNIT);
const double flangeSlope = hasFlangeSlope ? (l->FlangeSlope() * getValue(GV_PLANEANGLE_UNIT)) : 0.;
const double webSlope = hasWebSlope ? (l->WebSlope() * getValue(GV_PLANEANGLE_UNIT)) : 0.;
if ( x < ALMOST_ZERO || y < ALMOST_ZERO || d1 < ALMOST_ZERO || d2 < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
double dy1 = 0.0f;
double dy2 = 0.0f;
double dx1 = 0.0f;
double dx2 = 0.0f;
double f1 = 0.0f;
double f2 = 0.0f;
double f3 = 0.0f;
if (doFillet) {
f1 = l->FilletRadius() * getValue(GV_LENGTH_UNIT);
}
if (doWebEdgeFillet) {
f2 = l->WebEdgeRadius() * getValue(GV_LENGTH_UNIT);
}
if (doFlangeEdgeFillet) {
f3 = l->FlangeEdgeRadius() * getValue(GV_LENGTH_UNIT);
}
double xx, xy;
if (hasFlangeSlope) {
dy1 = (x / 2. - d1) * tan(flangeSlope);
dy2 = x / 2. * tan(flangeSlope);
}
if (hasWebSlope) {
dx1 = (y - d2) * tan(webSlope);
dx2 = y * tan(webSlope);
}
if (hasWebSlope || hasFlangeSlope) {
const double x1s = d1/2. - dx2; const double y1s = -y;
const double x1e = d1/2. + dx1; const double y1e = y - d2;
const double x2s = x; const double y2s = y - d2 + dy2;
const double x2e = d1/2.; const double y2e = y - d2 - dy1;
const double a1 = y1e - y1s;
const double b1 = x1s - x1e;
const double c1 = a1*x1s + b1*y1s;
const double a2 = y2e - y2s;
const double b2 = x2s - x2e;
const double c2 = a2*x2s + b2*y2s;
const double det = a1*b2 - a2*b1;
if (ALMOST_THE_SAME(det, 0.)) {
Logger::Message(Logger::LOG_NOTICE, "Web and flange do not intersect for:",l->entity);
return false;
}
xx = (b2*c1 - b1*c2) / det;
xy = (a1*c2 - a2*c1) / det;
} else {
xx = d1 / 2;
xy = y - d2;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
double coords[16] = {d1/2.-dx2,-y, xx,xy, x,y-d2+dy2, x,y, -x,y, -x,y-d2+dy2, -xx,xy, -d1/2.+dx2,-y};
int fillets[6] = {0,1,2,5,6,7};
double radii[6] = {f2,f1,f3,f3,f1,f2};
return profile_helper(8, coords, (doFillet || doWebEdgeFillet || doFlangeEdgeFillet) ? 6 : 0, fillets, radii, trsf2d, face);
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcCircleProfileDef* l, TopoDS_Shape& face) {
const double r = l->Radius() * getValue(GV_LENGTH_UNIT);
if ( r == 0.0f ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
gp_Ax2 ax = gp_Ax2().Transformed(trsf2d);
Handle(Geom_Circle) circle = new Geom_Circle(ax, r);
TopoDS_Edge edge = BRepBuilderAPI_MakeEdge(circle);
BRepBuilderAPI_MakeWire w;
w.Add(edge);
TopoDS_Face f;
bool success = convert_wire_to_face(w, f);
if (success) face = f;
return success;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcCircleHollowProfileDef* l, TopoDS_Shape& face) {
const double r = l->Radius() * getValue(GV_LENGTH_UNIT);
const double t = l->WallThickness() * getValue(GV_LENGTH_UNIT);
if ( r == 0.0f || t == 0.0f ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
gp_Ax2 ax = gp_Ax2().Transformed(trsf2d);
BRepBuilderAPI_MakeWire outer;
Handle(Geom_Circle) outerCircle = new Geom_Circle(ax, r);
outer.Add(BRepBuilderAPI_MakeEdge(outerCircle));
BRepBuilderAPI_MakeFace mf(outer.Wire(), false);
BRepBuilderAPI_MakeWire inner;
Handle(Geom_Circle) innerCirlce = new Geom_Circle(ax, r-t);
inner.Add(BRepBuilderAPI_MakeEdge(innerCirlce));
mf.Add(inner);
ShapeFix_Shape sfs(mf.Face());
sfs.Perform();
face = TopoDS::Face(sfs.Shape());
return true;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcEllipseProfileDef* l, TopoDS_Shape& face) {
double rx = l->SemiAxis1() * getValue(GV_LENGTH_UNIT);
double ry = l->SemiAxis2() * getValue(GV_LENGTH_UNIT);
if ( rx < ALMOST_ZERO || ry < ALMOST_ZERO ) {
Logger::Message(Logger::LOG_NOTICE,"Skipping zero sized profile:",l->entity);
return false;
}
const bool rotated = ry > rx;
gp_Trsf2d trsf2d;
bool has_position = true;
#ifdef USE_IFC4
has_position = l->hasPosition();
#endif
if (has_position) {
IfcGeom::Kernel::convert(l->Position(), trsf2d);
}
gp_Ax2 ax = gp_Ax2();
if (rotated) {
ax.Rotate(ax.Axis(), M_PI / 2.);
std::swap(rx, ry);
}
ax.Transform(trsf2d);
BRepBuilderAPI_MakeWire w;
Handle(Geom_Ellipse) ellipse = new Geom_Ellipse(ax, rx, ry);
TopoDS_Edge edge = BRepBuilderAPI_MakeEdge(ellipse);
w.Add(edge);
TopoDS_Face f;
bool success = convert_wire_to_face(w, f);
if (success) face = f;
return success;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcCenterLineProfileDef* l, TopoDS_Shape& face) {
const double d = l->Thickness() * getValue(GV_LENGTH_UNIT) / 2.;
TopoDS_Wire wire;
if (!convert_wire(l->Curve(), wire)) return false;
// BRepOffsetAPI_MakeOffset insists on creating circular arc
// segments for joining the curves that constitute the center
// line. This is probably not in accordance with the IFC spec.
// Although it does not specify a method to join segments
// explicitly, it does dictate 'a constant thickness along the
// curve'. Therefore for simple singular wires a quick
// alternative is provided that uses a straight join.
TopExp_Explorer exp(wire, TopAbs_EDGE);
TopoDS_Edge edge = TopoDS::Edge(exp.Current());
exp.Next();
if (!exp.More()) {
double u1, u2;
Handle(Geom_Curve) curve = BRep_Tool::Curve(edge, u1, u2);
Handle(Geom_TrimmedCurve) trim = new Geom_TrimmedCurve(curve, u1, u2);
Handle(Geom_OffsetCurve) c1 = new Geom_OffsetCurve(trim, d, gp::DZ());
Handle(Geom_OffsetCurve) c2 = new Geom_OffsetCurve(trim, -d, gp::DZ());
gp_Pnt c1a, c1b, c2a, c2b;
c1->D0(c1->FirstParameter(), c1a);
c1->D0(c1->LastParameter(), c1b);
c2->D0(c2->FirstParameter(), c2a);
c2->D0(c2->LastParameter(), c2b);
BRepBuilderAPI_MakeWire mw;
mw.Add(BRepBuilderAPI_MakeEdge(c1));
mw.Add(BRepBuilderAPI_MakeEdge(c1a, c2a));
mw.Add(BRepBuilderAPI_MakeEdge(c2));
mw.Add(BRepBuilderAPI_MakeEdge(c2b, c1b));
face = BRepBuilderAPI_MakeFace(mw.Wire());
} else {
BRepOffsetAPI_MakeOffset offset(BRepBuilderAPI_MakeFace(gp_Pln(gp::Origin(), gp::DZ())));
offset.AddWire(wire);
offset.Perform(d);
face = BRepBuilderAPI_MakeFace(TopoDS::Wire(offset));
}
return true;
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcCompositeProfileDef* l, TopoDS_Shape& face) {
// BRepBuilderAPI_MakeFace mf;
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
IfcSchema::IfcProfileDef::list::ptr profiles = l->Profiles();
//bool first = true;
for (IfcSchema::IfcProfileDef::list::it it = profiles->begin(); it != profiles->end(); ++it) {
TopoDS_Face f;
if (convert_face(*it, f)) {
builder.Add(compound, f);
/* TopExp_Explorer exp(f, TopAbs_WIRE);
for (; exp.More(); exp.Next()) {
const TopoDS_Wire& wire = TopoDS::Wire(exp.Current());
if (first) {
mf.Init(BRepBuilderAPI_MakeFace(wire));
} else {
mf.Add(wire);
}
first = false;
} */
}
}
face = compound;
return !face.IsNull();
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcDerivedProfileDef* l, TopoDS_Shape& face) {
TopoDS_Face f;
gp_Trsf2d trsf2d;
if (convert_face(l->ParentProfile(), f) && IfcGeom::Kernel::convert(l->Operator(), trsf2d)) {
gp_Trsf trsf = trsf2d;
face = TopoDS::Face(BRepBuilderAPI_Transform(f, trsf));
return true;
} else {
return false;
}
}
bool IfcGeom::Kernel::convert(const IfcSchema::IfcPlane* l, TopoDS_Shape& face) {
gp_Pln pln;
convert(l, pln);
Handle_Geom_Surface surf = new Geom_Plane(pln);
#if OCC_VERSION_HEX < 0x60502
face = BRepBuilderAPI_MakeFace(surf);
#else
face = BRepBuilderAPI_MakeFace(surf, getValue(GV_PRECISION));
#endif
return true;
}
#ifdef USE_IFC4
bool IfcGeom::Kernel::convert(const IfcSchema::IfcBSplineSurfaceWithKnots* l, TopoDS_Shape& face) {
boost::shared_ptr< IfcTemplatedEntityListList > cps = l->ControlPointsList();
std::vector uknots = l->UKnots();
std::vector vknots = l->VKnots();
std::vector umults = l->UMultiplicities();
std::vector vmults = l->VMultiplicities();
TColgp_Array2OfPnt Poles (0, (int)cps->size() - 1, 0, (int)(*cps->begin()).size() - 1);
TColStd_Array1OfReal UKnots(0, (int)uknots.size() - 1);
TColStd_Array1OfReal VKnots(0, (int)vknots.size() - 1);
TColStd_Array1OfInteger UMults(0, (int)umults.size() - 1);
TColStd_Array1OfInteger VMults(0, (int)vmults.size() - 1);
Standard_Integer UDegree = l->UDegree();
Standard_Integer VDegree = l->VDegree();
int i = 0, j;
for (IfcTemplatedEntityListList::outer_it it = cps->begin(); it != cps->end(); ++it, ++i) {
j = 0;
for (IfcTemplatedEntityListList::inner_it jt = (*it).begin(); jt != (*it).end(); ++jt, ++j) {
IfcSchema::IfcCartesianPoint* p = *jt;
gp_Pnt pnt;
if (!convert(p, pnt)) return false;
Poles(i, j) = pnt;
}
}
i = 0;
for (std::vector::const_iterator it = uknots.begin(); it != uknots.end(); ++it, ++i) {
UKnots(i) = *it;
}
i = 0;
for (std::vector::const_iterator it = vknots.begin(); it != vknots.end(); ++it, ++i) {
VKnots(i) = *it;
}
i = 0;
for (std::vector::const_iterator it = umults.begin(); it != umults.end(); ++it, ++i) {
UMults(i) = *it;
}
i = 0;
for (std::vector::const_iterator it = vmults.begin(); it != vmults.end(); ++it, ++i) {
VMults(i) = *it;
}
Handle_Geom_Surface surf = new Geom_BSplineSurface(Poles, UKnots, VKnots, UMults, VMults, UDegree, VDegree);
#if OCC_VERSION_HEX < 0x60502
face = BRepBuilderAPI_MakeFace(surf);
#else
face = BRepBuilderAPI_MakeFace(surf, getValue(GV_PRECISION));
#endif
return true;
}
#endif