Function checkSegmentMatch

src/core/objects/boolean_tool.cpp:1185–1216

}

bool checkSegmentMatch(
        const PathObject* original,
        int coord_index,
        const ClipperLib::Path& polygon,
        ClipperLib::Path::size_type start_index,
        ClipperLib::Path::size_type end_index,
        bool& out_coords_increasing,
        bool& out_is_curve )
{
	
	const MapCoord first = original->getCoordinate(coord_index);
	out_is_curve = first.isCurveStart();
	
	auto other_index = (coord_index + (out_is_curve ? 3 : 1)) % original->getCoordinateCount();
	const MapCoord other = original->getCoordinate(other_index);
	
	bool found = true;
	if (first == polygon.at(start_index) && other == polygon.at(end_index))
	{
		out_coords_increasing = true;
	}
	else if (first == polygon.at(end_index) && other == polygon.at(start_index))
	{
		out_coords_increasing = false;
	}
	else
	{
		found = false;
	}
	
	return found;
}

}  // namespace