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relate(L,L) some comments added

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Adam Wulkiewicz
2014-02-25 17:59:02 +01:00
parent 37db735b38
commit 6f4094ec2a
1 changed files with 9 additions and 1 deletions
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10
include/boost/geometry/algorithms/detail/relate/linear_linear.hpp
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@@ -530,7 +530,6 @@ struct linear_linear
update<interior, exterior, '1', transpose_result>(res);
}
// fake exit point, reset state
// in reality this will be op == overlay::operation_intersection
else if ( op == overlay::operation_intersection )
{
m_exit_watcher.reset_detected_exit();
@@ -546,6 +545,10 @@ struct linear_linear
m_exit_watcher.reset_detected_exit();
}
// if the new linestring started just now,
// but the previous one went out on the previous point,
// we must check if the boundary of the previous segment is outside
// NOTE: couldn't it be integrated with the handling of the union above?
if ( first_in_range
&& ! fake_enter_detected
&& m_previous_operation == overlay::operation_union )
@@ -761,25 +764,30 @@ struct linear_linear
bool res = false;
// IP on the last point of the linestring
if ( (BoundaryQuery == boundary_back || BoundaryQuery == boundary_any)
&& operation_info.operation == overlay::operation_blocked )
{
BOOST_ASSERT(operation_info.position == overlay::position_back);
// check if this point is a boundary
res = boundary_checker.template is_endpoint_boundary<boundary_back>(ip);
#ifdef BOOST_GEOMETRY_DEBUG_RELATE_LINEAR_LINEAR
BOOST_ASSERT(res == boundary_checker.template is_boundary<boundary_back>(ip, seg_id));
#endif
}
// IP on the last point of the linestring
else if ( (BoundaryQuery == boundary_front || BoundaryQuery == boundary_any)
&& operation_info.position == overlay::position_front )
{
// check if this point is a boundary
res = boundary_checker.template is_endpoint_boundary<boundary_front>(ip);
#ifdef BOOST_GEOMETRY_DEBUG_RELATE_LINEAR_LINEAR
BOOST_ASSERT(res == boundary_checker.template is_boundary<boundary_front>(ip, seg_id));
#endif
}
// IP somewhere in the interior
else
{
#ifdef BOOST_GEOMETRY_DEBUG_RELATE_LINEAR_LINEAR