IfcOpenShell/src/ifcgeom/mapping/IfcPointByDistanceExpression.cpp

/********************************************************************************
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 * This file is part of IfcOpenShell.                                           *
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 * IfcOpenShell is free software: you can redistribute it and/or modify         *
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 * Lesser GNU General Public License for more details.                          *
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#include "mapping.h"
#include "../profile_helper.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 = inst->BasisCurve();
   //auto item = map(basis_curve);
   //auto pw_curve = ifcopenshell::geometry::piecewise_from_item(item);
   auto pw_curve = taxonomy::dcast<taxonomy::piecewise_function>(map(inst->BasisCurve()));
   auto m = pw_curve->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;
   }

   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