diff --git a/include/boost/gil/extension/toolbox/metafunctions.hpp b/include/boost/gil/extension/toolbox/metafunctions.hpp
index 16d7ee0184..9fc1bce0ef 100644
--- a/include/boost/gil/extension/toolbox/metafunctions.hpp
+++ b/include/boost/gil/extension/toolbox/metafunctions.hpp
@@ -8,6 +8,7 @@
#ifndef BOOST_GIL_EXTENSION_TOOLBOX_METAFUNCTIONS_HPP
#define BOOST_GIL_EXTENSION_TOOLBOX_METAFUNCTIONS_HPP
+#include <boost/gil/extension/toolbox/metafunctions/aligned.hpp>
#include <boost/gil/extension/toolbox/metafunctions/channel_type.hpp>
#include <boost/gil/extension/toolbox/metafunctions/channel_view.hpp>
#include <boost/gil/extension/toolbox/metafunctions/get_num_bits.hpp>
diff --git a/include/boost/gil/extension/toolbox/metafunctions/aligned.hpp b/include/boost/gil/extension/toolbox/metafunctions/aligned.hpp
new file mode 100644
index 0000000000..49a691ac0c
--- /dev/null
+++ b/include/boost/gil/extension/toolbox/metafunctions/aligned.hpp
@@ -0,0 +1,70 @@
+// Copyright Tom Brinkman 2008. Distributed under 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)
+
+#ifndef BOOST_GIL_EXTENSION_TOOLBOX_METAFUNCTIONS_ALIGNED_HPP
+#define BOOST_GIL_EXTENSION_TOOLBOX_METAFUNCTIONS_ALIGNED_HPP
+
+#include <boost/gil.hpp>
+
+namespace boost { namespace gil {
+
+/// \brief Aligns the image view passed through struct constructor in a specific direction
+/// inside the image view passed through the overloaded '()' operator. The direction of
+/// alignment is specified by constructor parameters.
+template <typename View>
+struct aligned
+{
+ // Following enum variables will be used for specifying alignment of view passed through
+ // constructor with respect to the view passed through overloaded '()' operator.
+ enum
+ {
+ left = 0x1 << 0,
+ center = 0x1 << 1,
+ right = 0x1 << 2,
+ top = 0x1 << 3,
+ middle = 0x1 << 5,
+ bottom = 0x1 << 7,
+ };
+
+ View original_view;
+ int align;
+ aligned(View temp_view, int temp_align = center | middle)
+ : original_view(temp_view)
+ , align(temp_align)
+ {
+ }
+
+ void operator()(View view)
+ {
+ long int const original_view_width = original_view.width();
+ long int const original_view_height = original_view.height();
+ long int const view_width = view.width(), view_height = view.height();
+
+ // For ensuring that view passed through '()' operator has dimensions greater than or
+ // equal to the dimensions of view passed through constructor.
+ if (original_view_height > view_height || original_view_width > view_width)
+ {
+ throw std::length_error("Image view passed through overloaded '()' operator must have"
+ " dimensions greater than or equal to the dimensions of image view passed through"
+ " struct constructor");
+ }
+
+ std::ptrdiff_t x = 0;
+ if (align & center)
+ x = (view_width - original_view_width) / 2;
+ else if (align & right)
+ x = view_width - original_view_width;
+
+ std::ptrdiff_t y = 0;
+ if (align & middle)
+ y = (view_height - original_view_height) / 2;
+ else if (align & bottom)
+ y = view_height - original_view_height;
+
+ View temp_subimage_view = subimage_view(view, x, y, original_view_width, original_view_height);
+ copy_pixels(original_view, temp_subimage_view);
+ }
+}; // aligned
+}} // namespace boost::gil
+#endif
diff --git a/test/extension/toolbox/CMakeLists.txt b/test/extension/toolbox/CMakeLists.txt
index 70df68db42..7b19c9334f 100644
--- a/test/extension/toolbox/CMakeLists.txt
+++ b/test/extension/toolbox/CMakeLists.txt
@@ -9,6 +9,7 @@
message(STATUS "Boost.GIL: Configuring tests in test/extension/toolbox")
foreach(_name
+ aligned
channel_type
channel_view
color_convert_cmyka
diff --git a/test/extension/toolbox/Jamfile b/test/extension/toolbox/Jamfile
index a2a78f7bed..133e936b42 100644
--- a/test/extension/toolbox/Jamfile
+++ b/test/extension/toolbox/Jamfile
@@ -17,6 +17,7 @@ compile is_bit_aligned.cpp ;
compile is_homogeneous.cpp ;
compile pixel_bit_size.cpp ;
+run aligned.cpp ;
run channel_view.cpp ;
run color_convert_cmyka.cpp ;
run color_convert_gray.cpp ;
diff --git a/test/extension/toolbox/aligned.cpp b/test/extension/toolbox/aligned.cpp
new file mode 100644
index 0000000000..4f78009e76
--- /dev/null
+++ b/test/extension/toolbox/aligned.cpp
@@ -0,0 +1,294 @@
+//
+// Copyright 2021 Prathamesh Tagore <prathameshtagore@gmail.com>
+//
+// 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)
+//
+
+// Reference for test cases was taken from
+// https://github.com/tuttleofx/TuttleOFX/blob/develop/libraries/boostHack/boost/gil/extension/toolbox/aligned.tests.cpp
+
+#include <boost/gil/extension/toolbox/metafunctions.hpp>
+#include <boost/core/lightweight_test.hpp>
+#include <vector>
+
+namespace gil = boost::gil;
+
+// This function helps us fill pixels of a rgb view given as 2nd argument with
+// elements of the vector given as 1st argument.
+void pixel_fill_rgb(std::vector<std::vector<std::vector<int>>>& vec, gil::rgb8_image_t& img)
+{
+ for (std::ptrdiff_t view_row = 0; view_row < view(img).height(); ++view_row)
+ {
+ for (std::ptrdiff_t view_col = 0; view_col < view(img).width(); ++view_col)
+ {
+ gil::view(img)(view_col, view_row) = gil::rgb8_pixel_t(
+ static_cast<unsigned char>(vec[view_row][view_col][0]),
+ static_cast<unsigned char>(vec[view_row][view_col][1]),
+ static_cast<unsigned char>(vec[view_row][view_col][2]));
+ }
+ }
+}
+
+int main()
+{
+ std::vector<std::vector<std::vector<int>>> original_img_vector {
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191},
+ {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127},
+ {191, 191, 191}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {191, 191, 191}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {191, 191, 191}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191},
+ {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127},
+ {191, 191, 191}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}}
+};
+
+ std::vector<std::vector<std::vector<int>>> expected_center_middle_vector {
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {191, 191, 191}, {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, {127, 127, 127}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {191, 191, 191}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {191, 191, 191}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {191, 191, 191},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {127, 127, 127},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {127, 127, 127},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {191, 191, 191},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {191, 191, 191}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {191, 191, 191}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {191, 191, 191}, {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, {127, 127, 127}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}}
+};
+
+ std::vector<std::vector<std::vector<int>>> expected_left_top_vector {
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191},
+ {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127},
+ {191, 191, 191}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {191, 191, 191}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {191, 191, 191}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191}, { 0, 0, 0},
+ { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0},
+ { 0, 0, 0}, {191, 191, 191}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {191, 191, 191},
+ {127, 127, 127}, { 0, 0, 0}, { 0, 0, 0}, { 0, 0, 0}, {127, 127, 127},
+ {191, 191, 191}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}},
+ {{255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255},
+ {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}, {255, 255, 255}}
+};
+
+ gil::rgb8_image_t original_image(16, 16), expected_center_middle_img(20, 20);
+ gil::rgb8_image_t expected_left_top_img(20, 20), obtained_center_middle_img(20, 20);
+ gil::rgb8_image_t obtained_left_top_img(20, 20);
+
+ gil::rgb8_view_t obtained_center_middle_view = gil::view(obtained_center_middle_img);
+ gil::rgb8_view_t obtained_left_top_view = gil::view(obtained_left_top_img);
+
+ gil::fill_pixels(obtained_center_middle_view, gil::rgb8_pixel_t(255, 255, 255));
+ gil::fill_pixels(obtained_left_top_view, gil::rgb8_pixel_t(255, 255, 255));
+
+ pixel_fill_rgb(original_img_vector, original_image);
+ pixel_fill_rgb(expected_center_middle_vector, expected_center_middle_img);
+ pixel_fill_rgb(expected_left_top_vector, expected_left_top_img);
+
+ using aligned_t = gil::aligned<gil::rgb8_view_t>;
+ aligned_t aligned(gil::view(original_image), aligned_t::center | aligned_t::middle);
+ aligned(obtained_center_middle_view);
+
+ aligned.align = aligned_t::left | aligned_t::top;
+ aligned(obtained_left_top_view);
+
+ BOOST_TEST(gil::equal_pixels(obtained_center_middle_view, gil::view(expected_center_middle_img)));
+ BOOST_TEST(gil::equal_pixels(obtained_left_top_view, gil::view(expected_left_top_img)));
+
+ return boost::report_errors();
+}