/
SvgSerializer.cpp
2334 lines (1986 loc) · 71.1 KB
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SvgSerializer.cpp
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/********************************************************************************
* *
* Copyright 2015 IfcOpenShell and ROOT B.V. *
* *
* 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/>. *
* *
********************************************************************************/
#include "../ifcgeom_schema_agnostic/Kernel.h"
#include <string>
#include <fstream>
#include <cstdio>
#include <limits>
#include <algorithm>
#include <numeric>
#include <gp_Pln.hxx>
#include <gp_Trsf.hxx>
#include <gp_Circ.hxx>
#include <gp_Elips.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Edge.hxx>
#include <TopExp_Explorer.hxx>
#include <BRep_Tool.hxx>
#include <BRepTools.hxx>
#include <BRepAlgoAPI_Section.hxx>
#include <ShapeAnalysis_FreeBounds.hxx>
#include <TopTools_HSequenceOfShape.hxx>
#include <TopExp.hxx>
#include <BRepAdaptor_Curve.hxx>
#include <GCPnts_QuasiUniformDeflection.hxx>
#include <Geom_Curve.hxx>
#include <Geom_Line.hxx>
#include <Geom_Plane.hxx>
#include <Geom_Circle.hxx>
#include <Geom_Ellipse.hxx>
#include <gp_Ax22d.hxx>
#include <Standard_Version.hxx>
#include <GeomAPI.hxx>
#include <TopoDS_Wire.hxx>
#include <BRepBuilderAPI_Transform.hxx>
#include <BRepBuilderAPI_MakeEdge.hxx>
#include <BRepBuilderAPI_MakeFace.hxx>
#include <BRepBuilderAPI_MakePolygon.hxx>
#include <BRepAlgoAPI_Cut.hxx>
#include <BRepPrimAPI_MakeHalfSpace.hxx>
#include <GProp_GProps.hxx>
#include <BRepGProp.hxx>
#include <BRepTopAdaptor_FClass2d.hxx>
#include <Bnd_Box.hxx>
#include <BRep_Builder.hxx>
#include <BRepBndLib.hxx>
#include <ShapeFix_Edge.hxx>
#include <HLRBRep_PolyHLRToShape.hxx>
#include <Extrema_ExtPElS.hxx>
#include "../ifcparse/IfcGlobalId.h"
#include "../ifcgeom_schema_agnostic/base_utils.h"
#include "../ifcgeom_schema_agnostic/boolean_utils.h"
#include <boost/format.hpp>
#include <boost/tokenizer.hpp>
#include "SvgSerializer.h"
const double PI2 = M_PI * 2.;
bool SvgSerializer::ready() {
return true;
}
void SvgSerializer::write(path_object& p, const TopoDS_Shape& comp_or_wire, boost::optional<std::vector<double>> dash_array) {
/* ShapeFix_Wire fix;
Handle(ShapeExtend_WireData) data = new ShapeExtend_WireData;
for (TopExp_Explorer edges(result, TopAbs_EDGE); edges.More(); edges.Next()) {
data->Add(edges.Current());
}
fix.Load(data);
fix.FixReorder();
fix.FixConnected();
const TopoDS_Wire fixed_wire = fix.Wire(); */
util::string_buffer path;
std::list<TopoDS_Shape> wires;
if (comp_or_wire.ShapeType() == TopAbs_WIRE) {
wires.push_back(comp_or_wire);
} else if (comp_or_wire.ShapeType() == TopAbs_COMPOUND) {
TopoDS_Iterator it(comp_or_wire);
for (; it.More(); it.Next()) {
wires.push_back(it.Value());
}
}
bool first_wire = true;
for (auto& wire : wires) {
bool first = true;
for (TopExp_Explorer edges(wire, TopAbs_EDGE); edges.More(); edges.Next()) {
const TopoDS_Edge& edge = TopoDS::Edge(edges.Current());
double u1, u2;
Handle(Geom_Curve) curve = BRep_Tool::Curve(edge, u1, u2);
Handle(Geom2d_Curve) curve2d;
if (curve.IsNull()) {
TopLoc_Location loc;
Handle_Geom_Surface surf;
BRep_Tool::CurveOnSurface(edge, curve2d, surf, loc, u1, u2);
if (curve2d.IsNull()) {
Logger::Error("Failed to obtain 2d and 3d curve from edge");
continue;
}
Handle(Standard_Type) sty = surf->DynamicType();
if (sty != STANDARD_TYPE(Geom_Plane)) {
Logger::Error("Non-planar p-curves are not supported by this serializer");
continue;
}
gp_Pln pln = Handle(Geom_Plane)::DownCast(surf)->Pln();
curve = GeomAPI::To3d(curve2d, pln);
}
Handle(Standard_Type) ty = curve->DynamicType();
bool conical = (ty == STANDARD_TYPE(Geom_Circle) || ty == STANDARD_TYPE(Geom_Ellipse));
// TODO: ALMOST_THE_SAME utilities in separate header
bool closed = fabs((u1 + PI2) - u2) < 1.e-9;
// Write the element as a svg circle or ellipse. This isn't possible
// when forced writing of polygonal output or when there are multiple
// wires to be written.
if (!polygonal_ && (conical && closed) && wires.size() == 1) {
if (first) {
if (ty == STANDARD_TYPE(Geom_Circle)) {
Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast(curve);
double r = circle->Radius();
gp_Circ c = circle->Circ();
gp_Pnt center = c.Location();
path.add(" <circle r=\"");
radii.push_back(path.add(r));
path.add("\" cx=\"");
xcoords.push_back(path.add(center.X()));
path.add("\" cy=\"");
ycoords.push_back(path.add(center.Y()));
growBoundingBox(center.X() - r, center.Y() - r);
growBoundingBox(center.X() + r, center.Y() + r);
first = false;
continue;
} else if (ty == STANDARD_TYPE(Geom_Ellipse)) {
Handle(Geom_Ellipse) ellipse = Handle(Geom_Ellipse)::DownCast(curve);
gp_Elips e = ellipse->Elips();
gp_Pnt center = e.Location();
// Write the ellipse with major radius along X axis:
path.add(" <ellipse rx=\"");
radii.push_back(path.add(e.MajorRadius()));
path.add("\" ry=\"");
radii.push_back(path.add(e.MinorRadius()));
path.add("\" cx=\"");
xcoords.push_back(path.add(center.X()));
path.add("\" cy=\"");
ycoords.push_back(path.add(center.Y()));
path.add("\"");
// Rotate it with "transform":
gp_Ax1 major_axis = e.XAxis();
double z_rotation = major_axis.Direction().AngleWithRef(gp_Dir(1., 0., 0.), gp_Dir(0., 0., 1.));
path.add(" transform=\"rotate(");
path.add(z_rotation);
path.add(" ");
path.add(center.X());
path.add(" ");
path.add(center.Y());
// @todo isn't there a ")" missing here?
// @todo also X, Y are not added to {x,y}coords vector
// @todo also z_rotation is in radians, should be in degrees
// Bounding box:
// More important to have all geometry in bounding box than to be minimal
growBoundingBox(center.X() - e.MajorRadius(), center.Y() - e.MajorRadius());
growBoundingBox(center.X() + e.MajorRadius(), center.Y() + e.MajorRadius());
first = false;
continue;
}
} else {
std::stringstream ss;
ss << "Skipping full circle/ellipse inside aggregated <path> (id "
<< p.first << ")";
Logger::Warning(ss.str());
}
}
const bool reversed = edge.Orientation() == TopAbs_REVERSED;
gp_Pnt p1, p2;
curve->D0(u1, p1);
curve->D0(u2, p2);
if (reversed) {
std::swap(p1, p2);
}
if (first) {
if (first_wire) {
path.add(" <path d=\"");
} else {
path.add(" ");
}
path.add("M");
addXCoordinate(path.add(p1.X()));
path.add(",");
addYCoordinate(path.add(p1.Y()));
growBoundingBox(p1.X(), p1.Y());
}
growBoundingBox(p2.X(), p2.Y());
if (!polygonal_ && (ty == STANDARD_TYPE(Geom_Circle) || ty == STANDARD_TYPE(Geom_Ellipse))) {
Handle(Geom_Conic) conic = Handle(Geom_Conic)::DownCast(curve);
const bool mirrored = conic->Position().Axis().Direction().Z() < 0;
double r1, r2;
bool larger_arc_segment = (fmod(u2 - u1 + PI2, PI2) > M_PI);
bool positive_direction = (u2 > u1);
if (mirrored != reversed) {
// In case the local coordinate system is mirrored
// the direction is reversed.
positive_direction = !positive_direction;
}
gp_Pnt center;
if (ty == STANDARD_TYPE(Geom_Circle)) {
Handle(Geom_Circle) circle = Handle(Geom_Circle)::DownCast(curve);
r1 = r2 = circle->Radius();
center = circle->Location();
} else {
Handle(Geom_Ellipse) ellipse = Handle(Geom_Ellipse)::DownCast(curve);
r1 = ellipse->MajorRadius();
r2 = ellipse->MinorRadius();
center = ellipse->Location();
}
// Make sure the arc segment is entirely inside bounding box:
growBoundingBox(center.X() - r1, center.Y() - r1);
growBoundingBox(center.X() + r1, center.Y() + r1);
// Calculate the angle between 2d vecs to have signed result
const gp_Dir& d = conic->Position().XDirection();
const gp_Dir2d d2(d.X(), d.Y());
const double ang = closed ? M_PI * 2. : d2.Angle(gp::DX2d());
// Write radii
path.add(" A");
addSizeComponent(path.add(r1));
path.add(",");
addSizeComponent(path.add(r2));
// Write X-axis rotation
{ std::stringstream ss; ss << " " << ang << " ";
path.add(ss.str()); }
// Write large-arc-flag and sweep-flag
path.add(std::string(1, '0' + static_cast<int>(larger_arc_segment)));
path.add(",");
path.add(std::string(1, '0' + static_cast<int>(positive_direction)));
path.add(" ");
// Write arc end point
xcoords.push_back(path.add(p2.X()));
path.add(",");
ycoords.push_back(path.add(p2.Y()));
} else if (ty != STANDARD_TYPE(Geom_Line)) {
BRepAdaptor_Curve crv(edge);
GCPnts_QuasiUniformDeflection tessellater(crv, settings().deflection_tolerance());
// NB: Start at 2: 1-based and skip the first point, assume it coincides with p1.
for (int i = 2; i <= tessellater.NbPoints(); ++i) {
gp_Pnt pi = tessellater.Value(i);
path.add(" L");
xcoords.push_back(path.add(pi.X()));
path.add(",");
ycoords.push_back(path.add(pi.Y()));
growBoundingBox(pi.X(), pi.Y());
}
} else {
// Either a Geom_Line or something unimplemented,
// drawn as a straight line segment.
path.add(" L");
xcoords.push_back(path.add(p2.X()));
path.add(",");
ycoords.push_back(path.add(p2.Y()));
}
first = false;
}
first_wire = false;
}
if (!path.empty()) {
path.add("\"");
if (dash_array) {
path.add(" stroke-dasharray=\"");
bool first = true;
for (auto& d : *dash_array) {
if (!first) {
path.add(" ");
}
first = false;
radii.push_back(path.add(d));
}
path.add("\"");
}
path.add("/>\n");
p.second.push_back(path);
}
}
SvgSerializer::path_object& SvgSerializer::start_path(const gp_Pln& pln, IfcUtil::IfcBaseEntity* storey, const std::string& id) {
auto key = std::make_pair(std::make_pair(storey, ""), path_object());
SvgSerializer::path_object& p = paths.insert(key)->second;
drawing_metadata[key.first].pln_3d = pln;
p.first = id;
return p;
}
SvgSerializer::path_object& SvgSerializer::start_path(const gp_Pln& pln, const std::string& drawing_name, const std::string& id) {
auto key = std::make_pair(std::make_pair(nullptr, drawing_name), path_object());
SvgSerializer::path_object& p = paths.insert(key)->second;
drawing_metadata[key.first].pln_3d = pln;
p.first = id;
return p;
}
namespace {
boost::optional<std::pair<IfcUtil::IfcBaseEntity*, double>> storey_elevation_from_element(const IfcGeom::BRepElement* o) {
for (const auto& p : o->parents()) {
if (p->type() == "IfcBuildingStorey") {
try {
const IfcGeom::ElementSettings& settings = o->geometry().settings();
double e = *p->product()->get("Elevation");
double storey_elevation = e * settings.unit_magnitude();
return std::make_pair(p->product(), storey_elevation);
} catch (...) {
continue;
}
break;
}
}
return boost::none;
}
typedef std::pair<std::array<double, 3>, std::array<double, 3>> box_t;
boost::optional<TopoDS_Edge> edge_from_compound(TopoDS_Shape& compound) {
TopoDS_Iterator it(compound);
if (it.More()) {
TopoDS_Shape wire = it.Value();
it.Next();
if (!it.More() && wire.ShapeType() == TopAbs_WIRE) {
TopoDS_Iterator jt(wire);
if (jt.More()) {
TopoDS_Shape edge = jt.Value();
jt.Next();
if (!jt.More() && edge.ShapeType() == TopAbs_EDGE) {
return TopoDS::Edge(edge);
}
}
}
}
return boost::none;
}
class almost {
private:
double v_, eps_;
public:
almost(double v, double eps = 1.e-7)
: v_(v)
, eps_(eps)
{}
bool operator==(double other) const {
return std::fabs(other - v_) < eps_;
}
bool operator!=(double other) const {
return !(*this == other);
}
};
boost::optional<box_t> box_from_compound(TopoDS_Shape& compound) {
TopExp_Explorer exp(compound, TopAbs_SHELL);
TopoDS_Shell shell;
if (exp.More()) {
shell = TopoDS::Shell(exp.Current());
exp.Next();
if (exp.More()) {
return boost::none;
}
}
else {
return boost::none;
}
if (IfcGeom::util::count(shell, TopAbs_FACE) != 6) {
return boost::none;
}
TopoDS_Iterator it(shell);
for (; it.More(); it.Next()) {
const auto& face = TopoDS::Face(it.Value());
auto surf = BRep_Tool::Surface(face);
if (surf->DynamicType() != STANDARD_TYPE(Geom_Plane)) {
return boost::none;
}
auto pln = Handle(Geom_Plane)::DownCast(surf);
auto dz = std::abs(pln->Position().Direction().Z());
if (almost(0.) != dz && almost(1.) != dz) {
return boost::none;
}
auto dy = std::abs(pln->Position().Direction().Y());
if (almost(0.) != dy && almost(1.) != dy) {
return boost::none;
}
}
Bnd_Box b;
BRepBndLib::Add(compound, b, false);
double x0, y0, z0, x1, y1, z1;
b.Get(x0, y0, z0, x1, y1, z1);
return box_t{ {{x0, y0, z0}}, {{x1, y1, z1}} };
}
struct string_property {
std::string pset_name, prop_name, value;
};
template <typename It>
void enumerate_string_properties(IfcUtil::IfcBaseEntity* product, It output_it) {
auto rels = product->get_inverse("IsDefinedBy");
for (auto& rel : *rels) {
if (rel->declaration().is("IfcRelDefinesByProperties")) {
auto pset = (IfcUtil::IfcBaseEntity*) (IfcUtil::IfcBaseClass*) *((IfcUtil::IfcBaseEntity*) rel)->get("RelatingPropertyDefinition");
std::string pset_name;
if (!pset->get("Name")->isNull()) {
pset_name = (std::string) *pset->get("Name");
}
aggregate_of_instance::ptr props = *pset->get("HasProperties");
for (auto& prop : *props) {
if (prop->declaration().is("IfcPropertySingleValue")) {
std::string name = *((IfcUtil::IfcBaseEntity*) prop)->get("Name");
IfcUtil::IfcBaseClass* v = *((IfcUtil::IfcBaseEntity*) prop)->get("NominalValue");
auto value = v->data().getArgument(0);
if (value->type() == IfcUtil::Argument_STRING) {
std::string v_str = *value;
*output_it++ = string_property{ pset_name, name, v_str };
}
}
}
}
}
}
}
namespace {
boost::optional<std::string> get_curve_style_name(IfcUtil::IfcBaseEntity* item) {
auto refs = item->get_inverse("StyledByItem");
for (auto& ref : *refs) {
if (ref->declaration().is("IfcStyledItem")) {
aggregate_of_instance::ptr styles = *((IfcUtil::IfcBaseEntity*)ref)->get("Styles");
for (auto& s_ : *styles) {
auto s = (IfcUtil::IfcBaseEntity*) s_;
std::vector<IfcUtil::IfcBaseEntity*> pss;
if (s->declaration().is("IfcPresentationStyleAssignment")) {
aggregate_of_instance::ptr pstyles = *s->get("Styles");
for (auto& ssss : *pstyles) {
pss.push_back((IfcUtil::IfcBaseEntity*) ssss);
}
} else {
pss.push_back(s);
}
for (auto& ps : pss) {
if (ps->declaration().is("IfcCurveStyle")) {
auto arg = ps->get("Name");
if (!arg->isNull()) {
return (std::string) *arg;
}
}
}
}
}
}
return boost::none;
}
}
void SvgSerializer::write(const IfcGeom::BRepElement* brep_obj) {
boost::optional<std::string> object_type;
if (!brep_obj->product()->get("ObjectType")->isNull()) {
object_type = static_cast<std::string>(*brep_obj->product()->get("ObjectType"));
}
std::vector<boost::optional<std::vector<double>>> dash_arrays;
TopoDS_Shape compound_local = brep_obj->geometry().as_compound();
for (auto& x : brep_obj->geometry()) {
dash_arrays.emplace_back();
boost::optional<std::string> curve_style_name;
if (file) {
auto item = (IfcUtil::IfcBaseEntity*) this->file->instance_by_id(x.ItemId());
curve_style_name = get_curve_style_name(item);
}
if (curve_style_name &&
(boost::starts_with(*curve_style_name, "LINE_") ||
boost::starts_with(*curve_style_name, "DASH_")))
{
std::vector<std::string> tokens;
boost::split(tokens, *curve_style_name, boost::is_any_of("_"));
if (tokens.size() > 1) {
dash_arrays.back().emplace();
for (auto& tok : tokens) {
double d;
try {
d = boost::lexical_cast<double>(tok);
} catch (boost::bad_lexical_cast&) {
continue;
}
dash_arrays.back()->push_back(d / 1000.);
}
}
}
}
const gp_Trsf& trsf = brep_obj->transformation().data();
const bool is_section = (section_ref_ && object_type && *section_ref_ == *object_type);
bool is_elevation = false;
if (elevation_ref_ && object_type) {
is_elevation = *elevation_ref_ == *object_type;
} else if (elevation_ref_guid_) {
is_elevation = *elevation_ref_guid_ == brep_obj->guid();
}
BRepBuilderAPI_Transform make_transform_global(compound_local, trsf, true);
make_transform_global.Build();
// (When determinant < 0, copy is implied and the input is not mutated.)
auto compound_unmirrored = make_transform_global.Shape();
if (is_section || is_elevation) {
boost::optional<double> scale;
boost::optional<std::pair<double, double>> size;
auto e = edge_from_compound(compound_unmirrored);
boost::optional<gp_Pln> pln;
if (e) {
TopoDS_Edge global_edge = TopoDS::Edge(e->Moved(trsf));
double u0, u1;
auto crv = BRep_Tool::Curve(global_edge, u0, u1);
if (crv->DynamicType() == STANDARD_TYPE(Geom_Line)) {
gp_Pnt P;
gp_Vec V;
crv->D1((u0 + u1) / 2., P, V);
auto N = V.Crossed(gp::DZ());
pln = gp_Pln(gp_Ax3(P, N, V));
}
}
else if (boost::optional<box_t> b = box_from_compound(compound_local)) {
pln = gp_Pln().Transformed(trsf);
size = std::make_pair(
b->second[0] - b->first[0],
b->second[1] - b->first[1]
);
#if OCC_VERSION_HEX >= 0x70300
view_box_3d_.emplace();
BRepBndLib::AddOBB(compound_unmirrored, *view_box_3d_, false, false, false);
#endif
}
std::vector<string_property> props;
enumerate_string_properties(brep_obj->product(), std::back_inserter(props));
std::map<std::string, std::string> prop_map;
for (auto& p : props) {
prop_map[p.pset_name + "." + p.prop_name] = p.value;
}
auto pit = prop_map.find("EPset_Drawing.Scale");
if (pit != prop_map.end()) {
typedef boost::tokenizer<boost::char_separator<char>> tokenizer;
tokenizer tok{ pit->second };
auto tokit = tok.begin();
std::string num, denum;
if (tokit != tok.end()) {
num = *tokit++;
}
tokit++;
if (tokit != tok.end()) {
denum = *tokit++;
}
if (num.size() && denum.size()) {
try {
scale = (float) boost::lexical_cast<int>(num) / boost::lexical_cast<int>(denum);
}
catch (boost::bad_lexical_cast&) {}
}
}
if (!emit_building_storeys_ && scale && size) {
scale_ = scale;
size_ = std::make_pair(
// The header writes values in mm
size->first * 1000 * *scale_,
size->second * 1000 * *scale_
);
}
if (pln) {
// Move pln to have projection of origin at plane center.
// This is necessary to have Poly and BRep HLR at the same position
// (Poly) is wrong otherwise.
double pu, pv;
Extrema_ExtPElS ext;
ext.Perform(gp::Origin(), *pln, 1.e-5);
auto P0 = pln->Location();
pln->SetLocation(ext.Point(1).Value());
ext.Point(1).Parameter(pu, pv);
if (!emit_building_storeys_ && scale && size) {
offset_2d_ = std::make_pair(
((-size->first / 2.) - pu) * 1000 * *scale_,
((-size->second / 2.) + pv) * 1000 * *scale_
);
}
if (!deferred_section_data_) {
deferred_section_data_.emplace();
}
std::string name = brep_obj->name();
if (name.empty()) {
name = boost::lexical_cast<std::string>(brep_obj->id());
}
if (is_section) {
deferred_section_data_->push_back(vertical_section{ *pln , "Section " + name, false, scale, size });
}
if (is_elevation) {
deferred_section_data_->push_back(vertical_section{ *pln , "Elevation " + name, true, scale, size });
}
}
return;
}
auto p = storey_elevation_from_element(brep_obj);
IfcUtil::IfcBaseEntity* storey = p ? p->first : nullptr;
double elev = p ? p->second : std::numeric_limits<double>::quiet_NaN();
// @todo is it correct to call nameElement() here with a single storey (what if this element spans multiple?)
geometry_data data{ compound_local, dash_arrays, trsf, brep_obj->product(), storey, elev, brep_obj->name(), nameElement(storey, brep_obj) };
if (auto_section_ || auto_elevation_ || section_ref_ || elevation_ref_ || elevation_ref_guid_ || deferred_section_data_) {
element_buffer_.push_back(data);
}
// Augment bnd_ regardless of whether emitting storeys as we depend
// on the global bounds also for the storey height annotations.
BRepBndLib::Add(compound_unmirrored, bnd_);
if (emit_building_storeys_) {
write(data);
}
}
namespace {
int infront_or_behind(const gp_Pln& pln, const gp_Pnt& p) {
auto d = (p.XYZ() - pln.Location().XYZ()).Dot(pln.Axis().Direction().XYZ());
int state;
if (std::abs(d) < 1.e-5) {
state = 0;
} else {
state = d < 0. ? -1 : 1;
}
return state;
}
}
void SvgSerializer::write(const geometry_data& data) {
std::vector<section_data> section_heights_storage;
const std::vector<section_data>* section_heights_used = §ion_heights_storage;
if (section_data_) {
section_heights_used = section_data_.get_ptr();
} else {
if (data.storey) {
section_heights_storage.push_back(horizontal_plan{ data.storey, data.storey_elevation, +1. });
} else {
Logger::Warning("No global section height and unable to determine building storey for:", data.product);
return;
}
}
BRepBuilderAPI_Transform make_transform_global(data.compound_local, data.trsf, true);
make_transform_global.Build();
// (When determinant < 0, copy is implied and the input is not mutated.)
auto compound_unmirrored = make_transform_global.Shape();
#if OCC_VERSION_HEX >= 0x70300
if (view_box_3d_) {
Bnd_OBB obb;
BRepBndLib::AddOBB(compound_unmirrored, obb, false, false, false);
if (view_box_3d_->IsOut(obb)) {
Logger::Notice("Not including element due to viewBox", data.product);
return;
}
}
#endif
// SVG has a coordinate system with the origin in the *upper*-left corner
// therefore we mirror the shape along the XZ-plane.
gp_Trsf trsf_mirror;
if (!mirror_y_) {
trsf_mirror.SetMirror(gp_Ax2(gp::Origin(), gp::DY()));
}
if (mirror_x_) {
gp_Trsf mirror_x;
mirror_x.SetMirror(gp_Ax2(gp::Origin(), gp::DX()));
trsf_mirror.PreMultiply(mirror_x);
}
BRepBuilderAPI_Transform make_transform_mirror(compound_unmirrored, trsf_mirror, true);
make_transform_mirror.Build();
// (When determinant < 0, copy is implied and the input is not mutated.)
auto compound = make_transform_mirror.Shape();
TopoDS_Wire annotation;
if (is_floor_plan_ && draw_door_arcs_ && data.product->declaration().is("IfcDoor")) {
boost::optional<std::string> operation_type;
try {
aggregate_of_instance::ptr rels;
if (data.product->declaration().schema()->name() == "IFC2X3") {
rels = data.product->get_inverse("IsDefinedBy");
} else {
// Damn you, IFC
rels = data.product->get_inverse("IsTypedBy");
}
for (auto& rel : *rels) {
if (rel->declaration().name() == "IfcRelDefinesByType") {
IfcUtil::IfcBaseClass* ty = *((IfcUtil::IfcBaseEntity*)rel)->get("RelatingType");
const std::string& ty_entity_name = ty->declaration().name();
// Damn you, IFC
if (ty_entity_name == "IfcDoorStyle" || ty_entity_name == "IfcDoorType") {
operation_type = (std::string)*((IfcUtil::IfcBaseEntity*)ty)->get("OperationType");
}
}
}
} catch (std::exception& e) {
Logger::Error(e);
}
if (operation_type && ((*operation_type == "SINGLE_SWING_LEFT") || (*operation_type == "SINGLE_SWING_RIGHT"))) {
const bool is_left = *operation_type == "SINGLE_SWING_LEFT";
Bnd_Box bb;
BRepBndLib::Add(data.compound_local, bb);
if (bb.IsVoid()) {
return;
}
double x1, y1, z1, x2, y2, z2;
bb.Get(x1, y1, z1, x2, y2, z2);
double width = x2 - x1;
double y12 = (y1 + y2) / 2.;
gp_Pnt center(is_left ? x1 : x2, y12, 0);
gp_Pnt p1(is_left ? x2 : x1, y12, 0);
gp_Pnt p2(is_left ? x1 : x2, y12 + width, 0);
if (!is_left) {
// circles are counter clockwise, so for swing right
// we need to reverse the points in order to get the
// shorter part of the circle arc.
std::swap(p1, p2);
}
BRepBuilderAPI_MakeEdge me(gp_Circ(gp_Ax2(center, gp::DZ()), width), p1, p2);
if (me.IsDone()) {
BRep_Builder B;
B.MakeWire(annotation);
auto edge = me.Edge();
make_transform_global.Perform(edge, true);
auto edge_global = make_transform_global.Shape();
make_transform_mirror.Perform(edge_global, true);
auto edge_global_mirrored = make_transform_mirror.Shape();
center.Transform(data.trsf);
p1.Transform(data.trsf);
p2.Transform(data.trsf);
center.Transform(trsf_mirror);
p1.Transform(trsf_mirror);
p2.Transform(trsf_mirror);
if (!is_left) {
// For the purpose of the SVG serializer we do not a topologically
// connected wire. So adding disconnected edges is fine.
B.Add(annotation, BRepBuilderAPI_MakeEdge(center, p1).Edge());
}
B.Add(annotation, edge_global_mirrored);
if (is_left) {
B.Add(annotation, BRepBuilderAPI_MakeEdge(p2, center).Edge());
}
}
}
}
bool emitted = false;
for (auto sit = section_heights_used->begin(); sit != section_heights_used->end(); ++sit) {
const auto& variant = *sit;
// Elev + offset
double cut_z = std::numeric_limits<double>::infinity();
// Elev .. Elev(next)
std::pair<double, double> range;
gp_Vec projection_direction;
gp_Pln projection_plane;
IfcUtil::IfcBaseEntity* storey = nullptr;
std::string drawing_name;
bool use_hlr = always_project_;
// @todo use visitor
// horizontal_plan, horizontal_plan_at_element, vertical_section
if (variant.which() == 0) {
const auto& plan = boost::get<horizontal_plan>(variant);
storey = plan.storey;
cut_z = plan.elevation + plan.offset;
range = { plan.elevation, plan.next_elevation };
if (sit == section_heights_used->begin()) {
range.first = -std::numeric_limits<double>::infinity();
}
projection_direction = gp::DZ();
projection_plane = gp_Pln(gp_Ax3(gp_Pnt(0, 0, cut_z), gp_Dir(0, 0, 1), gp_Dir(1, 0, 0)));
} else if (variant.which() == 1) {
projection_direction = gp::DZ();
projection_plane = gp_Pln(gp_Ax3(gp_Pnt(0, 0, cut_z), gp_Dir(0, 0, 1), gp_Dir(1, 0, 0)));
} else if (variant.which() == 2) {
const auto& section = boost::get<vertical_section>(variant);
projection_direction = section.plane.Axis().Direction();
projection_plane = section.plane;
drawing_name = section.name;
use_hlr = section.with_projection;
}
auto& compound_to_use = is_floor_plan_ ? compound : compound_unmirrored;
if (use_hlr) { // && (hlr.which())) {
// Check if any of the bounding box points is on the correct side of the plane
Bnd_Box bb;
try {
BRepBndLib::Add(compound_to_use, bb);
}
catch (const Standard_Failure&) {}
if (bb.IsVoid()) {
continue;
}
double xs[2], ys[2], zs[2];
bb.Get(xs[0], ys[0], zs[0], xs[1], ys[1], zs[1]);
bool any_in_front = false, any_behind = false;
// See if any of the vertices is in the negative Z-axis of the projection plane
for (int i = 0; i < 8; ++i) {
gp_Pnt p(xs[(i & 1) == 1], ys[(i & 2) == 2], zs[(i & 4) == 4]);
int state = infront_or_behind(projection_plane, p);
if (state == -1) {
any_in_front = true;
} else if (state == +1) {
any_behind = true;
}
}
// Exclude annotations, spaces and grids from HLR
if (any_in_front && !data.product->declaration().is("IfcAnnotation") && !data.product->declaration().is("IfcSpace") && !data.product->declaration().is("IfcGrid")) {
TopoDS_Shape* compound_to_hlr = &compound_to_use;
TopoDS_Shape subtracted_shape;
bool should_subtract = false;
if (subtraction_settings_ == ON_SLABS_AT_FLOORPLANS) {
should_subtract = data.product->declaration().is("IfcSlab") && is_floor_plan_;
} else if (subtraction_settings_ == ON_SLABS_AND_WALLS) {
should_subtract = data.product->declaration().is("IfcSlab") || data.product->declaration().is("IfcWall");
} else if (subtraction_settings_ == ALWAYS) {
should_subtract = true;
}
if (any_in_front && any_behind && should_subtract) {
// This is currently only for slanted roof slabs on floor plans
bool should_cut = false;
TopExp_Explorer exp(compound_to_use, TopAbs_FACE);
for (; exp.More(); exp.Next()) {
const TopoDS_Face& face = TopoDS::Face(exp.Current());
BRepGProp_Face prop(face);
gp_Pnt _;
gp_Vec normal_direction;
double u0, u1, v0, v1;
BRepTools::UVBounds(face, u0, u1, v0, v1);
prop.Normal((u0 + u1) / 2., (v0 + v1) / 2., _, normal_direction);
const double dx = std::fabs(normal_direction.X());
const double dy = std::fabs(normal_direction.Y());
const double dz = std::fabs(normal_direction.Z());
auto largest = dx > dy ? dx : dy;
largest = largest > dz ? largest : dz;
if (subtraction_settings_ != ON_SLABS_AT_FLOORPLANS || largest < (1. - 1.e-5)) {
bool any_in_front_face = false, any_behind_face = false;
TopExp_Explorer exp2(face, TopAbs_VERTEX);
for (; exp2.More(); exp2.Next()) {
gp_Pnt p = BRep_Tool::Pnt(TopoDS::Vertex(exp2.Current()));
int state = infront_or_behind(projection_plane, p);
if (state == -1) {
any_in_front_face = true;
} else if (state == +1) {
any_behind_face = true;
}
}
should_cut = any_in_front_face && any_behind_face;
if (should_cut) {
break;
}
}
}
if (should_cut) {
// Sample eight bounding box points, project on plane
// and take the min and max U, V parameters to form
// a 2d bounding box in parameter space on the plane.