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vector: add homogenous converter

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added for symmetry with point classes
This commit is contained in:
Danny Robson 2015-07-21 01:40:53 +10:00
parent 6095c755cf
commit 5b8df525a2
3 changed files with 40 additions and 1 deletions
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1
Makefile.am
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@ -246,6 +246,7 @@ UTIL_FILES = \
variadic.ipp \
vector.cpp \
vector.hpp \
vector.ipp \
version.cpp \
version.hpp \
view.cpp \

7
vector.hpp
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@ -11,7 +11,7 @@
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2011 Danny Robson <danny@nerdcruft.net>
* Copyright 2011-2015 Danny Robson <danny@nerdcruft.net>
*/
#ifndef __UTIL_VECTOR_HPP
@ -45,6 +45,9 @@ namespace util {
vector<S,T>& normalise (void);
vector<S,T> normalised [[gnu::warn_unused_result]] (void) const;
// representations
template <size_t D> vector<D,T> homog (void) const;
// constants
static const vector<S,T> UNIT;
static const vector<S,T> ZERO;
@ -83,5 +86,7 @@ namespace util {
typedef vector<3,double> vector4d;
}
#include "vector.ipp"
#endif

33
vector.ipp Normal file
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@ -0,0 +1,33 @@
/*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* Copyright 2011-2015 Danny Robson <danny@nerdcruft.net>
*/
#if defined(__UTIL_VECTOR_IPP)
#error
#else
#define __UTIL_VECTOR_IPP
#endif
namespace util {
template <size_t S, typename T>
template <size_t D>
vector<D,T>
vector<S,T>::homog (void) const
{
static_assert (D > S, "reducing size loses data");
return (*this).template redim<D> (0.f);
}
}