Added '--strict-tolerance' option

src/ifcgeom/IfcGeom.h

@@ -225,6 +225,7 @@ private:
 	double dimensionality;
 	double layerset_first;
 	double no_wire_intersection_check;
+	double precision_factor;
 
 	// For stopping PlacementRelTo recursion in convert(const IfcSchema::IfcObjectPlacement* l, gp_Trsf& trsf)
 	const IfcParse::declaration* placement_rel_to;
@@ -258,6 +259,7 @@ public:
 		, layerset_first(-1.)
 		, disable_boolean_result(-1.)
 		, no_wire_intersection_check(-1)
+		, precision_factor(10.)
 	{}
 
 	MAKE_TYPE_NAME(Kernel)(const MAKE_TYPE_NAME(Kernel)& other)

src/ifcgeom/IfcGeomFunctions.cpp

@@ -1418,6 +1418,9 @@ void IfcGeom::Kernel::setValue(GeomValue var, double value) {
 	case GV_NO_WIRE_INTERSECTION_CHECK:
 		no_wire_intersection_check = value;
 		break;
+	case GV_PRECISION_FACTOR:
+		precision_factor = value;
+		break;
 	default:
 		throw std::runtime_error("Invalid setting");
 	}
@@ -1449,6 +1452,8 @@ double IfcGeom::Kernel::getValue(GeomValue var) const {
 		return disable_boolean_result;
 	case GV_NO_WIRE_INTERSECTION_CHECK:
 		return no_wire_intersection_check;
+	case GV_PRECISION_FACTOR:
+		return precision_factor;
 	}
 	throw std::runtime_error("Invalid setting");
 }

src/ifcgeom/IfcGeomIteratorImplementation.h

@@ -350,7 +350,7 @@ namespace IfcGeom {
 
 			if (any_precision_encountered) {
 				// Some arbitrary factor that has proven to work better for the models in the set of test files.
-				lowest_precision_encountered *= 10.;
+				lowest_precision_encountered *= kernel.getValue(IfcGeom::Kernel::GV_PRECISION_FACTOR);
 
 				lowest_precision_encountered *= unit_magnitude;
 				if (lowest_precision_encountered < 1.e-7) {
@@ -1008,6 +1008,11 @@ namespace IfcGeom {
 							? +1.0
 							: -1.0
 			);
+			kernel.setValue(IfcGeom::Kernel::GV_PRECISION_FACTOR,
+							settings.get(IteratorSettings::STRICT_TOLERANCE)
+							? 1.0
+							: 10.0
+			);
 
 			kernel.setValue(IfcGeom::Kernel::GV_DISABLE_BOOLEAN_RESULT,
 				settings.get(IteratorSettings::DISABLE_BOOLEAN_RESULT)

src/ifcgeom/IfcGeomIteratorSettings.h

@@ -96,9 +96,10 @@ namespace IfcGeom
 			DISABLE_BOOLEAN_RESULT = 1 << 20,
 			// Disables wire intersection checks
 			NO_WIRE_INTERSECTION_CHECK = 1 << 21,
-
+			// Sets kernel precision factor to 1
+			STRICT_TOLERANCE = 1 << 22,
 			/// Number of different setting flags.
-			NUM_SETTINGS = 21,
+			NUM_SETTINGS = 22,
         };
         /// Used to store logical OR combination of setting flags.
         typedef unsigned SettingField;