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SvgSerializer: Use storey elevation if available

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For the scenario where we a building storey and it has an elevation:
Instead taking the cross section of every product 1 meter above it's
lowest, take the cross section at storey elevation + 1 meter.
This commit is contained in:
Anders Granskogen Bjørnstad
2017-11-08 16:46:53 +01:00
committed by Thomas Krijnen
parent a9606b3044
commit 9be413a308
1 changed files with 17 additions and 1 deletions
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src/ifcconvert/SvgSerializer.cpp
+17 -1
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@@ -170,6 +170,7 @@ SvgSerializer::path_object& SvgSerializer::start_path(IfcSchema::IfcBuildingStor
void SvgSerializer::write(const IfcGeom::BRepElement<real_t>* o)
{
IfcSchema::IfcBuildingStorey* storey = 0;
boost::optional<double> storey_elevation = boost::none;
IfcSchema::IfcObjectDefinition* obdef = static_cast<IfcSchema::IfcObjectDefinition*>(file->entityById(o->id()));
#ifndef USE_IFC4
@@ -206,6 +207,10 @@ void SvgSerializer::write(const IfcGeom::BRepElement<real_t>* o)
}
if (obdef->is(IfcSchema::Type::IfcBuildingStorey)) {
storey = static_cast<IfcSchema::IfcBuildingStorey*>(obdef);
if (storey->hasElevation()) {
const IfcGeom::ElementSettings& settings = o->geometry().settings();
storey_elevation = storey->Elevation() * settings.unit_magnitude();
}
break;
}
}
@@ -241,7 +246,18 @@ void SvgSerializer::write(const IfcGeom::BRepElement<real_t>* o)
if (zmin == inf || (zmax - zmin) < 1.) continue;
}
const double cut_z = section_height.get_value_or(zmin + 1.);
// Priority:
// 1) section_height
// 2) Storey elevation + 1m
// 3) zmin + 1m
double cut_z;
if (section_height) {
cut_z = section_height.get();
} else if (storey_elevation) {
cut_z = storey_elevation.get() + 1.;
} else {
cut_z = 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()));