IfcGeom::Representation::Serialization::Serialization(const BRep& brep)
: Representation(brep.settings())
, _id(brep.getId())
{
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = brep.begin(); it != brep.end(); ++ it) {
const TopoDS_Shape& s = it->Shape();
gp_GTrsf trsf = it->Placement();
if (settings().convert_back_units()) {
gp_Trsf scale;
scale.SetScaleFactor(1.0 / settings().unit_magnitude());
trsf.PreMultiply(scale);
}
bool trsf_valid = false;
gp_Trsf _trsf;
try {
_trsf = trsf.Trsf();
trsf_valid = true;
} catch (...) {}
const TopoDS_Shape moved_shape = trsf_valid ? s.Moved(_trsf) :
BRepBuilderAPI_GTransform(s,trsf,true).Shape();
builder.Add(compound,moved_shape);
}
std::stringstream sstream;
BRepTools::Write(compound,sstream);
_brep_data = sstream.str();
}
void OpenCascadeBasedSerializer::write(const IfcGeom::BRepElement<real_t>* o) {
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = o->geometry().begin(); it != o->geometry().end(); ++ it) {
gp_GTrsf gtrsf = it->Placement();
const gp_Trsf& o_trsf = o->transformation().data();
gtrsf.PreMultiply(o_trsf);
if (o->geometry().settings().get(IfcGeom::IteratorSettings::CONVERT_BACK_UNITS)) {
gp_Trsf scale;
scale.SetScaleFactor(1.0 / o->geometry().settings().unit_magnitude());
gtrsf.PreMultiply(scale);
}
const TopoDS_Shape& s = it->Shape();
bool trsf_valid = false;
gp_Trsf trsf;
try {
trsf = gtrsf.Trsf();
trsf_valid = true;
} catch (...) {}
const TopoDS_Shape moved_shape = trsf_valid
? BRepBuilderAPI_Transform(s, trsf, true).Shape()
: BRepBuilderAPI_GTransform(s, gtrsf, true).Shape();
writeShape(moved_shape);
}
}
BldElement::BldElement(int id, string guid, string name, string type,
const IfcGeomObjects::IfcGeomShapeModelObject *o):id(id),guid(guid),name(name),type(type),geomtool(new Geometry){
BRep_Builder builder;
builder.MakeCompound(shape);
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = o->mesh().begin(); it != o->mesh().end(); ++ it) {
TopoDS_Shape brep = it->Shape();
gp_Trsf trsf = it->Placement().Trsf();
brep.Move(trsf);
// FIXME are the shells in the shape fixed by ifcopenshell?
builder.Add(shape,brep);
}
shape_original=shape;
}
void OpenCascadeBasedSerializer::write(const IfcGeom::BRepElement<real_t>* o) {
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = o->geometry().begin(); it != o->geometry().end(); ++ it) {
gp_GTrsf gtrsf = it->Placement();
const gp_Trsf& o_trsf = o->transformation().data();
gtrsf.PreMultiply(o_trsf);
if (o->geometry().settings().get(IfcGeom::IteratorSettings::CONVERT_BACK_UNITS)) {
gp_Trsf scale;
scale.SetScaleFactor(1.0 / o->geometry().settings().unit_magnitude());
gtrsf.PreMultiply(scale);
}
const TopoDS_Shape& s = it->Shape();
const TopoDS_Shape moved_shape = IfcGeom::Kernel::apply_transformation(s, gtrsf);
writeShape(moved_shape);
}
}
IfcGeom::Representation::Serialization::Serialization(const BRep& brep)
: Representation(brep.settings())
, _id(brep.getId())
{
TopoDS_Compound compound;
BRep_Builder builder;
builder.MakeCompound(compound);
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = brep.begin(); it != brep.end(); ++ it) {
const TopoDS_Shape& s = it->Shape();
gp_GTrsf trsf = it->Placement();
if (it->hasStyle() && it->Style().Diffuse()) {
const IfcGeom::SurfaceStyle::ColorComponent& clr = *it->Style().Diffuse();
_surface_styles.push_back(clr.R());
_surface_styles.push_back(clr.G());
_surface_styles.push_back(clr.B());
} else {
_surface_styles.push_back(-1.);
_surface_styles.push_back(-1.);
_surface_styles.push_back(-1.);
}
if (it->hasStyle() && it->Style().Transparency()) {
_surface_styles.push_back(1. - *it->Style().Transparency());
} else {
_surface_styles.push_back(1.);
}
if (settings().get(IteratorSettings::CONVERT_BACK_UNITS)) {
gp_Trsf scale;
scale.SetScaleFactor(1.0 / settings().unit_magnitude());
trsf.PreMultiply(scale);
}
bool trsf_valid = false;
gp_Trsf _trsf;
try {
_trsf = trsf.Trsf();
trsf_valid = true;
} catch (...) {}
const TopoDS_Shape moved_shape = trsf_valid ? s.Moved(_trsf) :
BRepBuilderAPI_GTransform(s,trsf,true).Shape();
builder.Add(compound,moved_shape);
}
std::stringstream sstream;
BRepTools::Write(compound,sstream);
_brep_data = sstream.str();
}
void SvgSerializer::write(const IfcGeom::BRepElement<double>* o) {
IfcSchema::IfcBuildingStorey* storey = 0;
IfcSchema::IfcObjectDefinition* obdef = static_cast<IfcSchema::IfcObjectDefinition*>(file->entityById(o->id()));
#ifndef USE_IFC4
typedef IfcSchema::IfcRelDecomposes decomposition_element;
#else
typedef IfcSchema::IfcRelAggregates decomposition_element;
#endif
while (true) {
// Iterate over the decomposing element to find the parent IfcBuildingStorey
decomposition_element::list::ptr decomposes = obdef->Decomposes();
if (!decomposes->size()) {
if (obdef->is(IfcSchema::Type::IfcElement)) {
IfcSchema::IfcRelContainedInSpatialStructure::list::ptr containment = ((IfcSchema::IfcElement*)obdef)->ContainedInStructure();
if (!containment->size()) {
break;
}
for (IfcSchema::IfcRelContainedInSpatialStructure::list::it it = containment->begin(); it != containment->end(); ++it) {
IfcSchema::IfcRelContainedInSpatialStructure* container = *it;
if (container->RelatingStructure() != obdef) {
obdef = container->RelatingStructure();
}
}
} else {
break;
}
} else {
for (decomposition_element::list::it it = decomposes->begin(); it != decomposes->end(); ++it) {
decomposition_element* decompose = *it;
if (decompose->RelatingObject() != obdef) {
obdef = decompose->RelatingObject();
}
}
}
if (obdef->is(IfcSchema::Type::IfcBuildingStorey)) {
storey = static_cast<IfcSchema::IfcBuildingStorey*>(obdef);
break;
}
}
if (!storey) return;
path_object& p = start_path(storey, nameElement(o));
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = o->geometry().begin(); it != o->geometry().end(); ++ it) {
gp_GTrsf gtrsf = it->Placement();
gp_Trsf o_trsf;
const std::vector<double>& matrix = o->transformation().matrix().data();
o_trsf.SetValues(
matrix[0], matrix[3], matrix[6], matrix[ 9],
matrix[1], matrix[4], matrix[7], matrix[10],
matrix[2], matrix[5], matrix[8], matrix[11]
#if OCC_VERSION_HEX < 0x60800
, Precision::Angular(), Precision::Confusion()
#endif
);
gtrsf.PreMultiply(o_trsf);
const TopoDS_Shape& s = it->Shape();
bool trsf_valid = false;
gp_Trsf trsf;
try {
trsf = gtrsf.Trsf();
trsf_valid = true;
} catch (...) {}
const TopoDS_Shape moved_shape = trsf_valid
? BRepBuilderAPI_Transform(s, trsf, true).Shape()
: BRepBuilderAPI_GTransform(s, gtrsf, true).Shape();
const double inf = std::numeric_limits<double>::infinity();
double zmin = inf;
double zmax = -inf;
{TopExp_Explorer exp(moved_shape, TopAbs_VERTEX);
for (; exp.More(); exp.Next()) {
const TopoDS_Vertex& vertex = TopoDS::Vertex(exp.Current());
gp_Pnt pnt = BRep_Tool::Pnt(vertex);
if (pnt.Z() < zmin) { zmin = pnt.Z(); }
if (pnt.Z() > zmax) { zmax = pnt.Z(); }
}}
if (section_height) {
if (zmin > section_height || zmax < section_height) continue;
} else {
if (zmin == inf || (zmax - zmin) < 1.) continue;
}
const double cut_z = section_height.get_value_or(zmin + 1.);
// Create a horizontal cross section 1 meter above the bottom point of the shape
TopoDS_Shape result = BRepAlgoAPI_Section(moved_shape, gp_Pln(gp_Pnt(0, 0, cut_z), gp::DZ()));
Handle(TopTools_HSequenceOfShape) edges = new TopTools_HSequenceOfShape();
Handle(TopTools_HSequenceOfShape) wires = new TopTools_HSequenceOfShape();
{TopExp_Explorer exp(result, TopAbs_EDGE);
for (; exp.More(); exp.Next()) {
edges->Append(exp.Current());
}}
ShapeAnalysis_FreeBounds::ConnectEdgesToWires(edges, 1e-5, false, wires);
gp_Pnt prev;
for (int i = 1; i <= wires->Length(); ++i) {
const TopoDS_Wire& wire = TopoDS::Wire(wires->Value(i));
write(p, wire);
}
}
}