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modified CvMat#flip to confirm to the behavior of OpenCV's cvFlip(), and added some tests

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This commit is contained in:
ser1zw 2011-01-02 04:06:12 +09:00
parent cc1c1e23be
commit 2235b89552
2 changed files with 52 additions and 11 deletions
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27
ext/cvmat.cpp
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@ -1380,14 +1380,16 @@ rb_repeat(VALUE self, VALUE object)
/*
* call-seq:
* flip(:x) -> cvmat
* flip(:y) -> cvmat
* flip -> -> cvmat
* flip(:x) -> cvmat
* flip(:y) -> cvmat
* flip(:xy) -> cvmat
* flip -> cvmat
*
* Return new flipped 2D array.
* * flip(:x) - flip around horizontal
* * flip(:y) - flip around vertical
* * flip - flip around both axises
* * flip(:x) - flip around horizontal
* * flip(:y) - flip around vertical
* * flip(:xy) - flip around both axises
* * flip - flip around vertical
*/
VALUE
rb_flip(int argc, VALUE *argv, VALUE self)
@ -1397,9 +1399,10 @@ rb_flip(int argc, VALUE *argv, VALUE self)
/*
* call-seq:
* flip!(:x) -> self
* flip!(:y) -> self
* flip! -> self
* flip!(:x) -> self
* flip!(:y) -> self
* flip!(:xy) -> self
* flip! -> self
*
* Flip 2D array. Return self.
*
@ -1409,14 +1412,16 @@ VALUE
rb_flip_bang(int argc, VALUE *argv, VALUE self)
{
VALUE format;
int mode = -1;
int mode = 0;
if (rb_scan_args(argc, argv, "01", &format) > 0) {
if (rb_to_id(format) == rb_intern("x"))
mode = 1;
else if (rb_to_id(format) == rb_intern("y"))
mode = 0;
else if (rb_to_id(format) == rb_intern("xy"))
mode = -1;
else
rb_warn("argument may be :x or :y");
rb_warn("argument may be :x or :y or :xy");
}
cvFlip(CVARR(self), NULL, mode);
return self;

36
test/test_cvmat.rb
View file

@ -604,6 +604,42 @@ class TestCvMat < OpenCVTestCase
}
}
end
def test_flip
m0 = create_cvmat(2, 3)
m1 = m0.clone
m1.flip!(:x)
m2 = m0.clone.flip(:x)
m3 = m0.clone
m3.flip!(:y)
m4 = m0.clone.flip(:y)
m5 = m0.clone
m5.flip!(:xy)
m6 = m0.clone.flip(:xy)
m7 = m0.clone
m7.flip!
m8 = m0.clone.flip
[m1, m2, m3, m4, m5, m6, m7, m8].each { |m|
assert_equal(m0.height, m.height)
assert_equal(m0.width, m.width)
}
m0.height.times { |j|
m0.width.times { |i|
ri = m0.width - i - 1
rj = m0.height - j - 1
assert_cvscalar_equal(m0[ri, j], m1[i, j])
assert_cvscalar_equal(m0[ri, j], m2[i, j])
assert_cvscalar_equal(m0[i, rj], m3[i, j])
assert_cvscalar_equal(m0[i, rj], m4[i, j])
assert_cvscalar_equal(m0[ri, rj], m5[i, j])
assert_cvscalar_equal(m0[ri, rj], m6[i, j])
assert_cvscalar_equal(m0[i, rj], m7[i, j])
assert_cvscalar_equal(m0[i, rj], m8[i, j])
}
}
end
# def test_avg_sdv
# m = CvMat.new(1, 8, CV_32F)