Adds support for IfcLinearPlacement

2026-08-13 10:57:49 +00:00 · 2023-10-20 13:29:33 -07:00
parent 4f3dacd6d5
commit fc22d2fa51
8 changed files with 497 additions and 157 deletions
@@ -0,0 +1,55 @@
+/********************************************************************************
+ *                                                                              *
+ * 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"
+#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_;
+   // @todo: rb - is it safe to assume the basis curve is a piecewise_function?
+	auto curve = ifcopenshell::geometry::taxonomy::cast<ifcopenshell::geometry::taxonomy::piecewise_function>(map(inst->BasisCurve()));
+   auto m = curve->evaluate(u);
+
+   auto o = Eigen::Vector3d(m.col(3)(0), m.col(3)(1), m.col(3)(2));
+   auto z = Eigen::Vector3d(m.col(2)(0), m.col(2)(1), m.col(2)(2));
+   auto x = Eigen::Vector3d(m.col(0)(0), m.col(0)(1), m.col(0)(2));
+
+   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