mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-12 10:33:20 +00:00
Thomas Krijnen
259 lines
8.1 KiB
C++
259 lines
8.1 KiB
C++
/********************************************************************************
|
|
* *
|
|
* 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 <BRep_Tool.hxx>
|
|
#include <BRepTools.hxx>
|
|
#include <BRep_Builder.hxx>
|
|
|
|
#include <TopoDS_Compound.hxx>
|
|
#include <Geom_Plane.hxx>
|
|
#include <GProp_GProps.hxx>
|
|
#include <BRepGProp.hxx>
|
|
|
|
#include "../ifcgeom/IfcGeom.h"
|
|
|
|
#include "IfcGeomRepresentation.h"
|
|
|
|
IfcGeom::Representation::Serialization::Serialization(const BRep& brep)
|
|
: Representation(brep.settings())
|
|
, id_(brep.id())
|
|
{
|
|
TopoDS_Compound compound = brep.as_compound();
|
|
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = brep.begin(); it != brep.end(); ++ it) {
|
|
int sid = -1;
|
|
|
|
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());
|
|
|
|
sid = it->Style().Id().get_value_or(-1);
|
|
} 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.);
|
|
}
|
|
|
|
surface_style_ids_.push_back(sid);
|
|
}
|
|
std::stringstream sstream;
|
|
BRepTools::Write(compound,sstream);
|
|
brep_data_ = sstream.str();
|
|
}
|
|
|
|
// todo copied from kernel
|
|
#include <BRepBuilderAPI_Transform.hxx>
|
|
#include <BRepBuilderAPI_GTransform.hxx>
|
|
|
|
TopoDS_Shape apply_transformation(const TopoDS_Shape& s, const gp_Trsf& t) {
|
|
if (t.Form() == gp_Identity) {
|
|
return s;
|
|
} else {
|
|
/// @todo set to 1. and exactly 1. or use epsilon?
|
|
if (t.ScaleFactor() != 1.) {
|
|
return BRepBuilderAPI_Transform(s, t, true);
|
|
} else {
|
|
return s.Moved(t);
|
|
}
|
|
}
|
|
}
|
|
|
|
TopoDS_Shape apply_transformation(const TopoDS_Shape& s, const gp_GTrsf& t) {
|
|
if (t.Form() == gp_Other) {
|
|
return BRepBuilderAPI_GTransform(s, t, true);
|
|
} else {
|
|
return apply_transformation(s, t.Trsf());
|
|
}
|
|
}
|
|
|
|
TopoDS_Compound IfcGeom::Representation::BRep::as_compound(bool force_meters) const {
|
|
TopoDS_Compound compound;
|
|
BRep_Builder builder;
|
|
builder.MakeCompound(compound);
|
|
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = begin(); it != end(); ++it) {
|
|
const TopoDS_Shape& s = it->Shape();
|
|
gp_GTrsf trsf = it->Placement();
|
|
|
|
if (!force_meters && settings().get(IteratorSettings::CONVERT_BACK_UNITS)) {
|
|
gp_Trsf scale;
|
|
scale.SetScaleFactor(1.0 / settings().unit_magnitude());
|
|
trsf.PreMultiply(scale);
|
|
}
|
|
|
|
const TopoDS_Shape moved_shape = apply_transformation(s, trsf);
|
|
builder.Add(compound, moved_shape);
|
|
}
|
|
return compound;
|
|
}
|
|
|
|
namespace {
|
|
void accumulate(const gp_Ax3& ax, const gp_Dir& normal, double area, double& along_x, double& along_y, double& along_z) {
|
|
along_x += area * fabs(ax.XDirection().Dot(normal));
|
|
along_y += area * fabs(ax.YDirection().Dot(normal));
|
|
along_z += area * fabs(ax.Direction().Dot(normal));
|
|
}
|
|
|
|
void surface_area_along_direction(double tol, const TopoDS_Shape& s, const gp_Ax3& ax, double& along_x, double& along_y, double& along_z) {
|
|
along_x = along_y = along_z = 0.;
|
|
|
|
bool meshed = false;
|
|
|
|
TopExp_Explorer exp(s, TopAbs_FACE);
|
|
for (; exp.More(); exp.Next()) {
|
|
const TopoDS_Face& face = TopoDS::Face(exp.Current());
|
|
Handle(Geom_Surface) surf = BRep_Tool::Surface(face);
|
|
Handle(Geom_Plane) plane = Handle(Geom_Plane)::DownCast(surf);
|
|
|
|
if (surf->DynamicType() == STANDARD_TYPE(Geom_Plane)) {
|
|
GProp_GProps prop_area;
|
|
BRepGProp::SurfaceProperties(face, prop_area);
|
|
const double area = prop_area.Mass();
|
|
|
|
accumulate(ax, plane->Position().Direction(), area, along_x, along_y, along_z);
|
|
} else {
|
|
|
|
if (!meshed) {
|
|
try {
|
|
BRepMesh_IncrementalMesh(s, tol);
|
|
} catch (...) {
|
|
Logger::Message(Logger::LOG_ERROR, "Failed to triangulate shape");
|
|
return;
|
|
}
|
|
meshed = true;
|
|
}
|
|
|
|
TopLoc_Location loc;
|
|
Handle(Poly_Triangulation) tri = BRep_Tool::Triangulation(face, loc);
|
|
if (!tri.IsNull()) {
|
|
const TColgp_Array1OfPnt& nodes = tri->Nodes();
|
|
std::vector<gp_XYZ> coords;
|
|
coords.reserve(nodes.Length());
|
|
|
|
for (int i = 1; i <= nodes.Length(); ++i) {
|
|
coords.push_back(nodes(i).Transformed(loc).XYZ());
|
|
}
|
|
|
|
const Poly_Array1OfTriangle& triangles = tri->Triangles();
|
|
for (int i = 1; i <= triangles.Length(); ++i) {
|
|
int n1, n2, n3;
|
|
|
|
if (face.Orientation() == TopAbs_REVERSED) {
|
|
triangles(i).Get(n3, n2, n1);
|
|
} else {
|
|
triangles(i).Get(n1, n2, n3);
|
|
}
|
|
|
|
const gp_XYZ& pt1 = coords[n1 - 1];
|
|
const gp_XYZ& pt2 = coords[n2 - 1];
|
|
const gp_XYZ& pt3 = coords[n3 - 1];
|
|
const gp_Vec v1 = pt2 - pt1;
|
|
const gp_Vec v2 = pt3 - pt2;
|
|
const gp_Vec v3 = pt1 - pt3;
|
|
const gp_Vec normal_vector = v1 ^ v2;
|
|
if (normal_vector.Magnitude() > ALMOST_ZERO) {
|
|
gp_Dir normal = gp_Dir();
|
|
|
|
double edge_lengths[3] = { v1.Magnitude(), v2.Magnitude(), v3.Magnitude() };
|
|
std::sort(&edge_lengths[0], &edge_lengths[2]);
|
|
|
|
const double& a = edge_lengths[0];
|
|
const double& b = edge_lengths[1];
|
|
const double& c = edge_lengths[2];
|
|
|
|
const double area = 0.25 * sqrt((a + (b + c))*(c - (a - b))*(c + (a - b))*(a + (b - c)));
|
|
accumulate(ax, normal, area, along_x, along_y, along_z);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool IfcGeom::Representation::BRep::calculate_surface_area(double& area) const {
|
|
try {
|
|
area = 0.;
|
|
|
|
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = begin(); it != end(); ++it) {
|
|
GProp_GProps prop;
|
|
BRepGProp::SurfaceProperties(it->Shape(), prop);
|
|
area += prop.Mass();
|
|
}
|
|
|
|
return true;
|
|
} catch (...) {
|
|
Logger::Error("Error during calculation of surface area");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool IfcGeom::Representation::BRep::calculate_volume(double& volume) const {
|
|
try {
|
|
volume = 0.;
|
|
|
|
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = begin(); it != end(); ++it) {
|
|
if (Kernel::is_manifold(it->Shape())) {
|
|
GProp_GProps prop;
|
|
BRepGProp::VolumeProperties(it->Shape(), prop);
|
|
volume += prop.Mass();
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
} catch (...) {
|
|
Logger::Error("Error during calculation of volume");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool IfcGeom::Representation::BRep::calculate_projected_surface_area(const gp_Ax3 & ax, double & along_x, double & along_y, double & along_z) const {
|
|
try {
|
|
along_x = along_y = along_z = 0.;
|
|
|
|
for (IfcGeom::IfcRepresentationShapeItems::const_iterator it = begin(); it != end(); ++it) {
|
|
double x, y, z;
|
|
surface_area_along_direction(settings().deflection_tolerance(), it->Shape(), ax, x, y, z);
|
|
|
|
if (Kernel::is_manifold(it->Shape())) {
|
|
x /= 2.;
|
|
y /= 2.;
|
|
z /= 2.;
|
|
}
|
|
|
|
along_x += x;
|
|
along_y += y;
|
|
along_z += z;
|
|
}
|
|
|
|
return true;
|
|
} catch (...) {
|
|
Logger::Error("Error during calculation of projected surface area");
|
|
return false;
|
|
}
|
|
}
|