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#include "../../structures/mask2d.h"
#include "../../algorithms/morphologicalflagger.h"
#include <boost/test/unit_test.hpp>
using algorithms::MorphologicalFlagger;
BOOST_AUTO_TEST_SUITE(dilation, *boost::unit_test::label("algorithms"))
static std::string maskToString(Mask2DCPtr mask, bool flip) {
std::stringstream s;
if (flip) {
for (unsigned x = 0; x < mask->Width(); ++x) {
for (unsigned y = 0; y < mask->Height(); ++y)
s << (mask->Value(x, y) ? 'x' : ' ');
s << '\n';
}
} else {
for (unsigned y = 0; y < mask->Height(); ++y) {
for (unsigned x = 0; x < mask->Width(); ++x)
s << (mask->Value(x, y) ? 'x' : ' ');
s << '\n';
}
}
return s.str();
}
static void setMask(Mask2DPtr mask, bool flip, const std::string& str) {
std::string::const_iterator i = str.begin();
if (flip) {
for (unsigned x = 0; x < mask->Width(); ++x) {
for (unsigned y = 0; y < mask->Height(); ++y) {
mask->SetValue(x, y, (*i) == 'x');
++i;
}
++i; // newline
}
} else {
for (unsigned y = 0; y < mask->Height(); ++y) {
for (unsigned x = 0; x < mask->Width(); ++x) {
mask->SetValue(x, y, (*i) == 'x');
++i;
}
++i; // newline
}
}
}
template <bool Flip, typename DilateFunction>
static void testDilation(DilateFunction dilate) {
std::string expected;
Mask2DPtr mask = Mask2D::CreateSetMaskPtr<false>(5, 5);
dilate(mask.get(), 0);
expected =
" \n"
" \n"
" \n"
" \n"
" \n";
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 1);
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 2);
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 3);
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 4);
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 5);
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 6);
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
expected =
" \n"
" \n"
" x \n"
" \n"
" \n";
setMask(mask, Flip, expected);
dilate(mask.get(), 0);
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 1);
expected =
" \n"
" \n"
" xxx \n"
" \n"
" \n";
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 1);
expected =
" \n"
" \n"
"xxxxx\n"
" \n"
" \n";
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 1);
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
dilate(mask.get(), 100);
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
setMask(mask, Flip,
" x \n"
" x \n"
"x \n"
" x\n"
" x x \n");
dilate(mask.get(), 2);
expected =
"xxxx \n"
" xxxx\n"
"xxx \n"
" xxx\n"
"xxxxx\n";
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
setMask(mask, Flip,
"x \n"
" x \n"
" x \n"
" x \n"
" x\n");
dilate(mask.get(), 6);
expected =
"xxxxx\n"
"xxxxx\n"
"xxxxx\n"
"xxxxx\n"
"xxxxx\n";
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
if (Flip)
mask = Mask2D::CreateSetMaskPtr<false>(4, 6);
else
mask = Mask2D::CreateSetMaskPtr<false>(6, 4);
dilate(mask.get(), 0);
expected =
" \n"
" \n"
" \n"
" \n";
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
setMask(mask, Flip,
"x \n"
" x \n"
" x \n"
" x\n");
dilate(mask.get(), 4);
expected =
"xxxxx \n"
"xxxxxx\n"
"xxxxxx\n"
" xxxxx\n";
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
setMask(mask, Flip,
"x \n"
" \n"
" x \n"
" x\n");
dilate(mask.get(), 7);
expected =
"xxxxxx\n"
" \n"
"xxxxxx\n"
"xxxxxx\n";
BOOST_CHECK_EQUAL(maskToString(mask, Flip), expected);
}
BOOST_AUTO_TEST_CASE(horizontal_dilation) {
testDilation<false>(MorphologicalFlagger::DilateFlagsHorizontally);
}
BOOST_AUTO_TEST_CASE(vertical_dilation) {
testDilation<true>(MorphologicalFlagger::DilateFlagsVertically);
}
BOOST_AUTO_TEST_SUITE_END()
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