<div dir="ltr"><div><div>Hi Volker,<br><br></div>This entirely depends on what "this" is, i.e. whether the class you are writing was correctly registered in Boost.Geometry as a geometry type to which a ring can be converted (ring, polygon...). Have you checked that?<br>
<br></div>Bruno<br></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Thu, Mar 28, 2013 at 5:05 PM, Volker Sch�ch <span dir="ltr"><<a href="mailto:vschoech@think-cell.com" target="_blank">vschoech@think-cell.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">Hi,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">I have this clumsy piece of code:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"><u></u>�<u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white" lang="EN-US">if</span><span style="background:white;font-size:9.5pt;font-family:Consolas" lang="EN-US">(
!vecpt.empty() ) {<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="background:white;font-size:9.5pt;font-family:Consolas" lang="EN-US">������ emplace_back( polygon_type() );<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="background:white;font-size:9.5pt;font-family:Consolas" lang="EN-US">������
</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white" lang="EN-US">static_cast</span><span style="background:white;font-size:9.5pt;font-family:Consolas" lang="EN-US">< std::vector<
_TPoint< T > >& >( back().outer() ) = std::move(vecpt);<u></u><u></u></span></p>
<p class="MsoNormal" style="text-autospace:none"><span style="background:white;font-size:9.5pt;font-family:Consolas">}<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"><u></u>�<u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">which actually should be written like this:<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"><u></u>�<u></u></span></p>
<p class="MsoNormal"><span style="background:white;font-size:9.5pt;font-family:Consolas" lang="EN-US">boost::geometry::convert( polygon_type::ring_type( std::move(vecpt) ), *</span><span style="font-size:9.5pt;font-family:Consolas;color:blue;background:white" lang="EN-US">this</span><span style="background:white;font-size:9.5pt;font-family:Consolas" lang="EN-US">
);</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US"><u></u>�<u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">but unfortunately this kind of conversion does not work. Did I make a mistake in my above statement, or is this not (yet) supported? If the latter, do you plan
on adding support for this at some point?<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">Thanks!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"" lang="EN-US">�� Volker<u></u><u></u></span></p>
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--<br>
Volker Sch�ch | <a href="mailto:vschoech@think-cell.com" target="_blank">vschoech@think-cell.com</a><br>
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