[Boost-bugs] [Boost C++ Libraries] #10033: scale_down on rectangle does not compile

Subject: [Boost-bugs] [Boost C++ Libraries] #10033: scale_down on rectangle does not compile
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2014-05-10 08:47:54

#10033: scale_down on rectangle does not compile
-------------------------------------------------+-------------------------
 Reporter:  Jakob Schou Jensen                   |      Owner:  ljsimons
  <jakob.schou.jensen@…>                         |     Status:  new
     Type:  Bugs                                 |  Component:  polygon
Milestone:  To Be Determined                     |   Severity:  Problem
  Version:  Boost 1.55.0                         |
 Keywords:                                       |
-------------------------------------------------+-------------------------
 I get a compile error when calling scale_down on a rectangle: eg:

 {{{
 rectangle_data<int> r;
 scale_down( r, 2 );
 }}}

 {{{
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/rectangle_concept.hpp:984:25:
 error: no matching function for
       call to 'scale_down'
     vertical(rectangle, scale_down(vertical(rectangle), factor));
                         ^~~~~~~~~~
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/interval_concept.hpp:386:10:
 note: candidate function [with
       IntervalType = boost::polygon::interval_data<int>] not viable:
 expects an l-value for 1st argument
 >::type& scale_down(
          ^
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/point_concept.hpp:395:3:
 note: candidate template ignored:
       disabled by 'enable_if' [with PointType =
 boost::polygon::interval_data<int>, CType = unsigned long long]
   typename gtl_and<
   ^
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/rectangle_concept.hpp:979:22:
 note: candidate template
       ignored: disabled by 'enable_if' [with rectangle_type =
 boost::polygon::interval_data<int>]
   typename enable_if<typename gtl_and<y_r_scale_down, typename
 is_mutable_rectangle_concept<typename geo...
                      ^
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/segment_concept.hpp:437:3:
 note: candidate template ignored:
       disabled by 'enable_if' [with Segment =
 boost::polygon::interval_data<int>]
   typename gtl_and<
   ^
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/polygon_traits.hpp:735:5:
 note: candidate template ignored:
       disabled by 'enable_if' [with polygon_type =
 boost::polygon::interval_data<int>]
     typename gtl_and< typename
 is_any_mutable_polygon_without_holes_type<polygon_type>::type,
     ^
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/polygon_traits.hpp:870:5:
 note: candidate template ignored:
       disabled by 'enable_if' [with polygon_type =
 boost::polygon::interval_data<int>]
     typename gtl_and< typename
 is_any_mutable_polygon_without_holes_type<polygon_type>::type,
     ^
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/polygon_traits.hpp:889:23:
 note: candidate template ignored:
       disabled by 'enable_if' [with T =
 boost::polygon::interval_data<int>]
   typename enable_if< typename
 is_any_mutable_polygon_with_holes_type<T>::type, T>::type &
                       ^
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/polygon_90_set_concept.hpp:437:23:
 note: candidate template
       ignored: disabled by 'enable_if' [with polygon_set_type =
 boost::polygon::interval_data<int>]
   typename enable_if< typename
 is_mutable_polygon_90_set_type<polygon_set_type>::type,
                       ^
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/polygon_45_set_concept.hpp:248:23:
 note: candidate template
       ignored: disabled by 'enable_if' [with polygon_set_type =
 boost::polygon::interval_data<int>]
   typename enable_if< typename
 is_mutable_polygon_45_set_type<polygon_set_type>::type,
                       ^
 /Users/schou/frameworks/boost_1_55_0/boost/polygon/polygon_set_concept.hpp:237:23:
 note: candidate template
       ignored: disabled by 'enable_if' [with polygon_set_type =
 boost::polygon::interval_data<int>]
   typename enable_if< typename
 is_mutable_polygon_set_type<polygon_set_type>::type,
                       ^
 2 errors generated.
 }}}

 I am compiling on mac osx maverics.

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/10033>
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