104 lines
1.4 KiB
Python
Executable File
104 lines
1.4 KiB
Python
Executable File
#!/usr/bin/python
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import sys
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#import logging
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#logging.basicConfig(level = logging.DEBUG)
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from gi.repository import Vips
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from vips8 import vips
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a = Vips.Image.new_from_file(sys.argv[1])
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def should_equal(test, a, b):
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if abs(a - b) > 0.01:
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print '%s: seen %g and %g' % (test, a, b)
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sys.exit(1)
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def bandsplit(a):
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return [a.extract_band(i) for i in range(0, a.bands)]
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# test operator overloads
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# addition
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b = a + 12
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should_equal('add constant', a.avg() + 12, b.avg())
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b = a + [12, 0, 0]
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x = map (lambda x: x.avg()) bandsplit(a)
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y = map (lambda x: x.avg()) bandsplit(b)
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x[0] += 12
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should_equal('add multiband constant', sum(x), sum(y))
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b = a + [12, 0, 0]
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b = a + b
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b = 12 + a
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b = [12, 0, 0] + a
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b = a - 12
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b = a - [12, 0, 0]
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b = a - b
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b = 12 - a
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b = [12, 0, 0] - a
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b = a * 12
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b = a * [12, 1, 1]
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b = a * b
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b = 12 * a
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b = [12, 1, 1] * a
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b = a / 12
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b = a / [12, 1, 1]
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b = 12 / a
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b = [12, 1, 1] / a
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b = a / b
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b = a // 12
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b = a // [12, 1, 1]
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b = 12 // a
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b = [12, 1, 1] // a
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b = a // b
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b = a % 12
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b = a % [12, 1, 1]
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b = a % b
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b = a ** 12
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b = a ** [12, 1, 1]
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b = 12 ** a
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b = [12, 1, 1] ** a
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b = a ** b
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b = a << 12
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b = a << [12, 1, 1]
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b = a << b
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b = a >> 12
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b = a >> [12, 1, 1]
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b = a >> b
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b = a & 12
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b = a & [12, 1, 1]
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b = 12 & a
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b = [12, 1, 1] & a
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b = a & b
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b = a | 12
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b = a | [12, 1, 1]
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b = 12 | a
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b = [12, 1, 1] | a
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b = a | b
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b = a ^ 12
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b = a ^ [12, 1, 1]
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b = 12 ^ a
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b = [12, 1, 1] ^ a
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b = a ^ b
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b = -a
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b = +a
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b = abs(a)
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b = ~a
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