azimuth.py

Diogo Caribe Caribe, 2016-07-08 06:22 AM

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"""
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Define new functions using @qgsfunction. feature and parent must always be the
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last args. Use args=-1 to pass a list of values as arguments
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"""
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from qgis.core import *


    		
  

  

    
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from qgis.gui import *


    		
  

  

    
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@qgsfunction(args='auto', group='Custom')


    		
  

  

    
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def azimuth(x1,y1,x2,y2, feature, parent):


    		
  

  

    
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    p1 = QgsPoint(x1,y1)


    		
  

  

    
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    p2 = QgsPoint(x2,y2)


    		
  

  

    
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    a = p1.azimuth(p2)


    		
  

  

    
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    if a < 0:


    		
  

  

    
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        a += 360


    		
  

  

    
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    return a