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IfcOpenShell/src/ifcgeom/mapping/IfcPointByDistanceExpression.cpp
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2026-04-17 10:05:25 +02:00

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/********************************************************************************
* *
* 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 "mapping.h"
#include "../profile_helper.h"
#include "../function_item_evaluator.h"
#define mapping POSTFIX_SCHEMA(mapping)
using namespace ifcopenshell::geometry;
#if defined SCHEMA_HAS_IfcPointByDistanceExpression
taxonomy::ptr mapping::map_impl(const IfcSchema::IfcPointByDistanceExpression* inst) {
auto u = (*inst->DistanceAlong()->as<IfcSchema::IfcLengthMeasure>()) * length_unit_;
auto basis_curve = map(inst->BasisCurve());
taxonomy::function_item::ptr curve = taxonomy::dcast<taxonomy::function_item>(basis_curve);
if (!curve) {
// if the basis curve is not a function_item, the cast it to piecewise_function. the casting operator
// calls loop_to_piecewise_function_upgrade and will convert loops to a piecewise function
curve = taxonomy::dcast<taxonomy::piecewise_function>(basis_curve);
}
function_item_evaluator evaluator(settings_,curve);
auto m = evaluator.evaluate(u);
auto o = m.col(3).head<3>();
auto z = m.col(2).head<3>();
auto x = m.col(0).head<3>();
if (inst->OffsetLateral().has_value()) {
auto offset_lateral = inst->OffsetLateral().get() * length_unit_;
auto y = Eigen::Vector3d(m.col(1)(0), m.col(1)(1), m.col(1)(2));
o += offset_lateral * y;
}
if (inst->OffsetVertical().has_value()) {
auto offset_vertical = inst->OffsetVertical().get() * length_unit_;
o += offset_vertical * z;
auto tmp1 = (z * offset_vertical).eval();
auto tmp2 = (Eigen::Vector3d(0, 0, 1) * offset_vertical).eval();
auto tmp3 = (tmp1 - tmp2).eval();
std::ostringstream oss;
oss << "local z: " << z.x() << "," << z.y() << "," << z.z() << "; delta: " << tmp3.x() << "," << tmp3.y() << "," << tmp3.z();
auto osss = oss.str();
std::wcout << osss.c_str() << std::endl;
}
if (inst->OffsetLongitudinal().has_value()) {
auto offset_longitudinal = inst->OffsetLongitudinal().get() * length_unit_;
o += offset_longitudinal* x;
}
return taxonomy::make<taxonomy::matrix4>(o,z,x);
}
#endif