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Adds loop_to_piecewise_function_upgrade

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This provides for a more uniform treatment of curves when mapping IfcOffsetCurveByDistances and IfcPointByDistanceExpression
This commit is contained in:
Richard Brice
2024-01-11 15:37:44 -08:00
parent 5815417198
commit a8b88b8ae1
4 changed files with 117 additions and 27 deletions
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src/ifcgeom/mapping/IfcPointByDistanceExpression.cpp
+7 -3
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@@ -18,6 +18,8 @@
********************************************************************************/
#include "mapping.h"
#include "../profile_helper.h"
#define mapping POSTFIX_SCHEMA(mapping)
using namespace ifcopenshell::geometry;
@@ -25,9 +27,11 @@ using namespace ifcopenshell::geometry;
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 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>();