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dynamic_io.hpp - Hosted on DriveHQ Cloud IT Platform
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路径: \\game3dprogramming\materials\GameFactory\GameFactoryDemo\references\boost_1_35_0\boost\gil\extension\io\dynamic_io.hpp
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/* Copyright 2005-2007 Adobe Systems Incorporated Use, modification and distribution are subject to the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt). See http://opensource.adobe.com/gil for most recent version including documentation. */ /*************************************************************************************************/ #ifndef GIL_DYNAMIC_IO_H #define GIL_DYNAMIC_IO_H /// \file /// \brief Generic io functions for dealing with dynamic images // /// \author Hailin Jin and Lubomir Bourdev \n /// Adobe Systems Incorporated /// \date 2005-2007 \n Last updated May 30, 2006 #include
#include
#include "../../gil_config.hpp" #include "../dynamic_image/any_image.hpp" namespace boost { namespace gil { namespace detail { template
struct construct_matched_t { template
static bool apply(any_image
& im,Pred pred) { if (pred.template apply
::type>()) { typename mpl::at_c
::type x; im.move_in(x); return true; } else return construct_matched_t
::apply(im,pred); } }; template <> struct construct_matched_t<0> { template
static bool apply(any_image
&,Pred) {return false;} }; // A function object that can be passed to apply_operation. // Given a predicate IsSupported taking a view type and returning an MPL boolean, // calls the apply method of OpClass with the view if the given view IsSupported, or throws an exception otherwise template
class dynamic_io_fnobj { OpClass* _op; template
void apply(const View& view,mpl::true_ ) {_op->apply(view);} template
void apply(const View& view,mpl::false_) {io_error("dynamic_io: unsupported view type for the given file format");} public: dynamic_io_fnobj(OpClass* op) : _op(op) {} typedef void result_type; template
void operator()(const View& view) {apply(view,typename IsSupported::template apply
::type());} }; } // namespace detail /// \brief Within the any_image, constructs an image with the given dimensions /// and a type that satisfies the given predicate template
inline bool construct_matched(any_image
& im,Pred pred) { return detail::construct_matched_t
::value>::apply(im,pred); } } } // namespace boost::gil #endif
dynamic_io.hpp
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