[Boost-bugs] [Boost C++ Libraries] #13381: Compile error with matrix_transformer.apply in Visual C++

Subject: [Boost-bugs] [Boost C++ Libraries] #13381: Compile error with matrix_transformer.apply in Visual C++
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2018-01-05 15:05:03

#13381: Compile error with matrix_transformer.apply in Visual C++
------------------------------+----------------------------
 Reporter:  chw@…             |      Owner:  Barend Gehrels
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  geometry
  Version:  Boost 1.66.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+----------------------------
 I just upgraded my code from boost 1.61.0 to 1.66.0 and had to make some
 smaller changes due to the switch to boost::qvm for the transformations.

 However, every single line containing transform (transforming
 point<double, 3, cartesian> to point<double, 3, cartesian> via
 matrix_transformer<double, 3, 3>) failed to compile in my case, because
 the compiler kept complaining that the template argument for operator 'R'
 could not be deduced.

 The compiler errors were not particularly helpful, but I figured out that
 the following modification helps:

 {{{
 172c172
 <             c1 * m_matrix(0,0) + c2 * m_matrix(0,1) + c3 * m_matrix(0,2)
 + m_matrix(0,3)));
 ---
 >             c1 * qvm::A<0,0>(m_matrix) + c2 * qvm::A<0,1>(m_matrix) + c3
 * qvm::A<0,2>(m_matrix) + qvm::A<0,3>(m_matrix)));
 174c174
 <             c1 * m_matrix(1,0) + c2 * m_matrix(1,1) + c3 * m_matrix(1,2)
 + m_matrix(1,3)));
 ---
 >             c1 * qvm::A<1,0>(m_matrix) + c2 * qvm::A<1,1>(m_matrix) + c3
 * qvm::A<1,2>(m_matrix) + qvm::A<1,3>(m_matrix)));
 176c176
 <             c1 * m_matrix(2,0) + c2 * m_matrix(2,1) + c3 * m_matrix(2,2)
 + m_matrix(2,3)));
 ---
 >             c1 * qvm::A<2,0>(m_matrix) + c2 * qvm::A<2,1>(m_matrix) + c3
 * qvm::A<2,2>(m_matrix) + qvm::A<2,3>(m_matrix)));
 }}}

 Basically I just replaced m_matrix(i,j) by qvm::A<i,j>(m_matrix) in
 matrix_transformer::apply.

-- 
Ticket URL: <https://svn.boost.org/trac10/boost/ticket/13381>
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