Adds support for IfcLinearPlacement

2026-08-17 10:59:17 +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 +1,71 @@
+/********************************************************************************
+ *                                                                              *
+ * 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_IfcAxis2PlacementLinear
+
+taxonomy::ptr mapping::map_impl(const IfcSchema::IfcAxis2PlacementLinear* inst) {
+
+	if (!inst->Location()->as<IfcSchema::IfcPointByDistanceExpression>())
+         Logger::Error(std::runtime_error("Location must be IfcPointByDistanceExpression for IfcAxis2PlacementLinear"));
+
+	Eigen::Vector3d o, axis(0, 0, 1), refDirection;
+
+	taxonomy::matrix4::ptr m = taxonomy::cast<taxonomy::matrix4>(map(inst->Location()));
+    o = Eigen::Vector3d(m->components().col(3)(0), m->components().col(3)(1), m->components().col(3)(2));
+
+   const bool hasAxis = !!inst->Axis();
+	const bool hasRef = !!inst->RefDirection();
+
+	if (hasAxis != hasRef) {
+		Logger::Warning("Axis and RefDirection should be specified together", inst);
+	}
+
+	if (hasAxis) {
+		taxonomy::direction3::ptr v = taxonomy::cast<taxonomy::direction3>(map(inst->Axis()));
+		axis = *v->components_;
+	}
+
+	if (hasRef) {
+		taxonomy::direction3::ptr v = taxonomy::cast<taxonomy::direction3>(map(inst->RefDirection()));
+		refDirection = *v->components_;
+	} else {
+		// @todo: rb "If RefDirection is omitted, the direction is taken from the curve tangent at Location"
+		// https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcAxis2PlacementLinear.htm
+		// Based on our email discussion, I'm using the perpendicular direction towards the right as viewed in the XY Plane for .RefDirection
+		//
+		// When the PointByDistanceExpression Location is evaluated, it is evaluating the basis curve and returning
+		// the matrix of orthogonal vectors that define the coordinate system at the point on curve as well as the point on curve
+		// In other words, the m matrix has everything needed
+
+		refDirection(0) = m->components().col(1)(0);
+      refDirection(1) = m->components().col(1)(1);
+      refDirection(2) = m->components().col(1)(2);
+        
+		axis(0) = m->components().col(2)(0);
+      axis(1) = m->components().col(2)(1);
+      axis(2) = m->components().col(2)(2);
+    }
+	return taxonomy::make<taxonomy::matrix4>(o, axis, refDirection);
+}
+
+#endif