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0001-templatetags-add-reproj-to-transform-lon-lat-to-give.patch

Frédéric Péters, 19 juillet 2019 16:01

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Subject: [PATCH] templatetags: add |reproj to transform lon/lat to given map
 projection (#34966)


 tests/test_templates.py           | 11 +++++++++++
 wcs/qommon/templatetags/qommon.py |  7 +++++++
 2 files changed, 18 insertions(+)
tests/test_templates.py
6 6 

  		




  7
  7
  
    
from django.test import override_settings

  		




  8
  8
  
    
from quixote import cleanup

  		




  
  9
  
    
from qommon.substitution import CompatibilityNamesDict

  		




  9
  10
  
    
from qommon.template import Template, TemplateError

  		




  10
  11
  
    
from wcs.conditions import Condition

  		




  11
  12
  
    
from wcs.variables import LazyFormData

  		




  ......




  511
  512
  
    

  		




  512
  513
  
    
    tmpl = Template('{{ foo|get:0 }}')

  		




  513
  514
  
    
    assert tmpl.render({'foo': ['bar', 'baz']}) == 'bar'

  		




  
  515
  
    

  		




  
  516
  
    
def test_reproj():

  		




  
  517
  
    

  		




  
  518
  
    
    class MockFormData(object):

  		




  
  519
  
    
        formdef = None

  		




  
  520
  
    
        geolocations = {'base': {'lat': 48, 'lon': 2}}

  		




  
  521
  
    

  		




  
  522
  
    
    lazy_formdata = LazyFormData(MockFormData())

  		




  
  523
  
    
    tmpl = Template('{% with form_geoloc_base|reproj:"EPSG:3946" as c %}{{c.0}}/{{c.1}}{% endwith %}')

  		




  
  524
  
    
    assert tmpl.render(CompatibilityNamesDict({'form': lazy_formdata})) == '1625337.15483/5422836.71627'

  		












  

    
      wcs/qommon/templatetags/qommon.py
    
  





  23
  23
  
    
import string

  		




  24
  24
  
    
import random

  		




  25
  25
  
    

  		




  
  26
  
    
import pyproj

  		




  26
  27
  
    
from pyproj import Geod

  		




  27
  28
  
    

  		




  28
  29
  
    
from django import template

  		




  ......




  341
  342
  
    
@register.filter

  		




  342
  343
  
    
def order_by(queryset, attribute):

  		




  343
  344
  
    
    return queryset.order_by(attribute)

  		




  
  345
  
    

  		




  
  346
  
    
@register.filter

  		




  
  347
  
    
def reproj(coords, projection_name):

  		




  
  348
  
    
    proj = pyproj.Proj(init='EPSG:4326')

  		




  
  349
  
    
    target_proj = pyproj.Proj(init=projection_name)

  		




  
  350
  
    
    return pyproj.transform(proj, target_proj, coords['lon'], coords['lat'])

  		




  344
  
  
    
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