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  • Committer: Brandon Craig Rhodes
  • Date: 2009-04-30 19:43:18 UTC
  • Revision ID: brandon@rhodesmill.org-20090430194318-r6b7yt25jspcyjk8
Merged changes 421 and 422 from the main "pyephem" branch, with one or
two tweaks to make them compatible with Python 3.0.  This brings over
the new next_pass() method for finding when a satellite next appears.

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src/ephem/__init__.py
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    def _compute_transit(self, body, start, sign, offset):
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        """Internal function used to compute transits."""
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        if isinstance(body, EarthSatellite):
 
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            raise TypeError(
 
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                'the next and previous transit methods do not'
 
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                ' support earth satellites because of their speed;'
 
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                ' please use the higher-resolution next_pass() method'
 
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                )
 
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        def f(d):
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            self.date = d
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            body.compute(self)
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    def _riset_helper(self, body, start, rising, previous):
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        """Internal function for finding risings and settings."""
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        if isinstance(body, EarthSatellite):
 
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            raise TypeError(
 
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                'the rising and settings methods do not'
 
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                ' support earth satellites because of their speed;'
 
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                ' please use the higher-resolution next_pass() method'
 
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                )
 
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        def visit_transit():
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            d = (previous and self.previous_transit(body)
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                 or self.next_transit(body)) # if-then
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        """Move to the given body's next setting, returning the date."""
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        return self._riset_helper(body, start, False, False)
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    def next_pass(self, body):
 
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        """Return the next rising, culmination, and setting of a satellite."""
 
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        if not isinstance(body, EarthSatellite):
 
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            raise TypeError(
 
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                'the next_pass() method is only for use with'
 
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                ' EarthSatellite objects because of their high speed'
 
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                )
 
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        return _libastro._next_pass(self, body)
 
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# Time conversion.
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def localtime(date):