mirror of
https://github.com/IfcOpenShell/IfcOpenShell.git
synced 2026-08-13 19:07:57 +00:00
Richard Brice
72 lines
3.5 KiB
C++
72 lines
3.5 KiB
C++
/********************************************************************************
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* *
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* This file is part of IfcOpenShell. *
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* *
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* IfcOpenShell is free software: you can redistribute it and/or modify *
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* it under the terms of the Lesser GNU General Public License as published by *
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* the Free Software Foundation, either version 3.0 of the License, or *
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* (at your option) any later version. *
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* *
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* IfcOpenShell is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* Lesser GNU General Public License for more details. *
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* *
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* You should have received a copy of the Lesser GNU General Public License *
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* along with this program. If not, see <http://www.gnu.org/licenses/>. *
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* *
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********************************************************************************/
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#include "mapping.h"
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#define mapping POSTFIX_SCHEMA(mapping)
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using namespace ifcopenshell::geometry;
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#if defined SCHEMA_HAS_IfcAxis2PlacementLinear
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taxonomy::ptr mapping::map_impl(const IfcSchema::IfcAxis2PlacementLinear* inst) {
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if (!inst->Location()->as<IfcSchema::IfcPointByDistanceExpression>())
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Logger::Error(std::runtime_error("Location must be IfcPointByDistanceExpression for IfcAxis2PlacementLinear"));
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Eigen::Vector3d o, axis(0, 0, 1), refDirection;
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taxonomy::matrix4::ptr m = taxonomy::cast<taxonomy::matrix4>(map(inst->Location()));
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o = m->components().col(3).head<3>();
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const bool hasAxis = !!inst->Axis();
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const bool hasRef = !!inst->RefDirection();
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if (hasAxis != hasRef) {
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Logger::Warning("Axis and RefDirection should be specified together", inst);
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}
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if (hasAxis) {
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taxonomy::direction3::ptr v = taxonomy::cast<taxonomy::direction3>(map(inst->Axis()));
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axis = *v->components_;
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} else {
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// 8.9.3.4 IfcAxis2LinearPlacement does not specify the default when Axis is omitted
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// When RefDirection is omitted, see comment below, it is taken to be tangent to the curve.
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// To be consistent, Axis is taken to be orthogonal to RefDirection
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axis = m->components().col(2).head<3>();
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}
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if (hasRef) {
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taxonomy::direction3::ptr v = taxonomy::cast<taxonomy::direction3>(map(inst->RefDirection()));
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refDirection = *v->components_;
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} else {
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// 8.9.3.4 IfcAxis2LinearPlacement
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// https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcAxis2PlacementLinear.htm
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// "If RefDirection is omitted, the direction is taken from the curve tangent at Location"
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//
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// When the PointByDistanceExpression Location is evaluated, it is evaluating the basis curve and returning
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// the matrix of orthogonal vectors that define the coordinate system at the point on curve as well as the point on curve
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// In other words, the m matrix has everything needed
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refDirection = m->components().col(0).head<3>();
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}
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return taxonomy::make<taxonomy::matrix4>(o, axis, refDirection);
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}
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#endif
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