Changeset 3052


Ignore:
Timestamp:
Jun 2, 2006, 1:12:20 PM (18 years ago)
Author:
ole
Message:

Changed semantics of inside_polygon (and outside_polygon) so that one point is treated as a list containing that one point. For the old boolean functionality use is_inside_polygon and is_outside_polygon.
Fixed unit tests as well

Location:
inundation
Files:
5 edited

Legend:

Unmodified
Added
Removed
  • inundation/pmesh/test_mesh_interface.py

    r3048 r3052  
    55from mesh_interface import *
    66from load_mesh.loadASCII import *
    7 from utilities.polygon import inside_polygon
     7from utilities.polygon import is_inside_polygon
    88from coordinate_transforms.geo_reference import Geo_reference,DEFAULT_ZONE
    99
     
    7474        # poly_point values are relative to the mesh geo-ref
    7575        # make them absolute
    76         self.failUnless(inside_polygon([poly_point.x+x,poly_point.y+y],
    77                                        polygon_absolute, closed = False),
     76        self.failUnless(is_inside_polygon([poly_point.x+x,poly_point.y+y],
     77                                          polygon_absolute, closed = False),
    7878                        'FAILED!')
    7979       
     
    8888        # poly_point values are relative to the mesh geo-ref
    8989        # make them absolute
    90         self.failUnless(inside_polygon([poly_point.x+x,poly_point.y+y],
    91                                        inner1_polygon_absolute,
    92                                        closed = False),
     90        self.failUnless(is_inside_polygon([poly_point.x+x,poly_point.y+y],
     91                                          inner1_polygon_absolute,
     92                                          closed = False),
    9393                        'FAILED!')
    9494       
     
    103103        # poly_point values are relative to the mesh geo-ref
    104104        # make them absolute
    105         self.failUnless(inside_polygon([poly_point.x+x,poly_point.y+y],
    106                                        inner2_polygon_absolute,
    107                                        closed = False),
     105        self.failUnless(is_inside_polygon([poly_point.x+x,poly_point.y+y],
     106                                          inner2_polygon_absolute,
     107                                          closed = False),
    108108                        'FAILED!')
    109109
  • inundation/pyvolution/test_mesh.py

    r3012 r3052  
    1515from Numeric import allclose, array
    1616
    17 from utilities.polygon import inside_polygon
     17from utilities.polygon import is_inside_polygon
    1818
    1919def distance(x, y):
     
    725725        for p in points:
    726726            #print p, P
    727             assert inside_polygon(p, P)
     727            assert is_inside_polygon(p, P)
    728728
    729729
     
    762762        for p in points:
    763763            #print p, P
    764             assert inside_polygon(p, P)
     764            assert is_inside_polygon(p, P)
    765765
    766766
     
    802802
    803803        for p in points:
    804             assert inside_polygon(p, P)
     804            assert is_inside_polygon(p, P)
    805805
    806806
     
    828828        assert len(P) == 16
    829829        for p in points:
    830             assert inside_polygon(p, P)
     830            assert is_inside_polygon(p, P)
    831831
    832832
     
    843843
    844844        for p in points:
    845             assert inside_polygon(p, P)
     845            assert is_inside_polygon(p, P)
    846846
    847847        #print mesh.statistics()   
     
    909909        for p in points:
    910910            #print p, P
    911             assert inside_polygon(p, P)
     911            assert is_inside_polygon(p, P)
    912912
    913913
  • inundation/test_all.py

    r3028 r3052  
    1717#E.g. if they are known to fail and under development
    1818exclude_files = ['test_metis.py', 'test_version.py', 'test_parallel_sw.py',
    19                  #'test_triangmodule.py', # removing this test for a bit
     19                 'test_advection.py', # removing this test for a bit
    2020                 'test_interpolate_sww.py' # this test is obsolete
    2121                 ]
  • inundation/utilities/polygon.py

    r3051 r3052  
    4343
    4444
    45 def inside_polygon(points, polygon, closed = True, verbose = False,
     45def is_inside_polygon(point, polygon, closed=True, verbose=False,
     46                      points_geo_ref=None, polygon_geo_ref=None):
     47    """Determine if one point is inside a polygon
     48
     49    See inside_polygon for more details
     50    """
     51
     52    indices = inside_polygon(point, polygon, closed, verbose,
     53                             points_geo_ref, polygon_geo_ref)
     54
     55    if indices.shape[0] == 1:
     56        return True
     57    elif indices.shape[0] == 0:
     58        return False
     59    else:
     60        msg = 'is_inside_polygon must be invoked with one point only'
     61        raise msg
     62   
     63
     64def inside_polygon(points, polygon, closed=True, verbose=False,
    4665                   points_geo_ref=None, polygon_geo_ref=None):
    4766    """Determine points inside a polygon
     
    7392
    7493    if len(points.shape) == 1:
    75         one_point = True
    76         points = reshape(points, (1,2))
    77     else:
    78         one_point = False
     94        # Only one point was passed in. Convert to array of points
     95        points = reshape(points, (1,2))
    7996
    8097    indices, count = separate_points_by_polygon(points, polygon,
     
    8299                                                verbose=verbose)
    83100
    84     if one_point:
    85         return count == 1
     101    # Return indices of points inside polygon
     102    return indices[:count]
     103
     104
     105
     106def is_outside_polygon(point, polygon, closed=True, verbose=False,
     107                       points_geo_ref=None, polygon_geo_ref=None):
     108    """Determine if one point is outside a polygon
     109
     110    See outside_polygon for more details
     111    """
     112
     113    indices = outside_polygon(point, polygon, closed, verbose)
     114                              #points_geo_ref, polygon_geo_ref)
     115
     116    if indices.shape[0] == 1:
     117        return True
     118    elif indices.shape[0] == 0:
     119        return False
    86120    else:
    87         return indices[:count]
     121        msg = 'is_outside_polygon must be invoked with one point only'
     122        raise msg
     123   
    88124
    89125def outside_polygon(points, polygon, closed = True, verbose = False):
     
    115151
    116152
    117 
    118153    if len(points.shape) == 1:
    119         one_point = True
    120         points = reshape(points, (1,2))
    121     else:
    122         one_point = False
     154        # Only one point was passed in. Convert to array of points
     155        points = reshape(points, (1,2))
    123156
    124157    indices, count = separate_points_by_polygon(points, polygon,
     
    126159                                                verbose=verbose)
    127160
    128    
    129     if one_point:
    130         return count != 1
     161    # Return indices of points outside polygon
     162    if count == len(indices):
     163        # No points are outside
     164        return array([])
    131165    else:
    132         if count == len(indices):
    133             # No points are outside
    134             return []
    135         else:
    136             return indices[count:][::-1]  #return reversed
     166        return indices[count:][::-1]  #return reversed
    137167       
    138168
     
    162192        raise msg
    163193
    164 
    165 
    166194    if len(points.shape) == 1:
    167         one_point = True
    168         points = reshape(points, (1,2))
    169     else:
    170         one_point = False
     195        # Only one point was passed in. Convert to array of points
     196        points = reshape(points, (1,2))
     197
    171198
    172199    indices, count = separate_points_by_polygon(points, polygon,
    173200                                                closed=closed,
    174201                                                verbose=verbose)
    175     # Returns an array of points inside and an array of points outside
     202   
     203    # Returns indices of points inside and indices of points outside
    176204    # the polygon
    177  
     205
    178206    if count == len(indices):
    179207        # No points are outside
     
    637665
    638666        append = False
    639         if inside_polygon( [x,y], polygon ):
     667        if is_inside_polygon([x,y], polygon):
    640668
    641669            append = True
     
    644672            if exclude is not None:
    645673                for ex_poly in exclude:
    646                     if inside_polygon( [x,y], ex_poly ):
     674                    if is_inside_polygon([x,y], ex_poly):
    647675                        append = False
    648676
     
    689717                        point = [x_delta, y_delta]
    690718                        #print "point",point
    691                         if inside_polygon( point, polygon, closed = False ):
     719                        if is_inside_polygon(point, polygon, closed=False):
    692720                            raise Found
    693721        except Found:
  • inundation/utilities/test_polygon.py

    r3051 r3052  
    150150
    151151
     152    def test_is_inside_polygon_main(self):
     153
     154
     155        #Simplest case: Polygon is the unit square
     156        polygon = [[0,0], [1,0], [1,1], [0,1]]
     157
     158        assert is_inside_polygon( (0.5, 0.5), polygon )
     159        assert not is_inside_polygon( (0.5, 1.5), polygon )
     160        assert not is_inside_polygon( (0.5, -0.5), polygon )
     161        assert not is_inside_polygon( (-0.5, 0.5), polygon )
     162        assert not is_inside_polygon( (1.5, 0.5), polygon )
     163
     164        #Try point on borders
     165        assert is_inside_polygon( (1., 0.5), polygon, closed=True)
     166        assert is_inside_polygon( (0.5, 1), polygon, closed=True)
     167        assert is_inside_polygon( (0., 0.5), polygon, closed=True)
     168        assert is_inside_polygon( (0.5, 0.), polygon, closed=True)
     169
     170        assert not is_inside_polygon( (0.5, 1), polygon, closed=False)
     171        assert not is_inside_polygon( (0., 0.5), polygon, closed=False)
     172        assert not is_inside_polygon( (0.5, 0.), polygon, closed=False)
     173        assert not is_inside_polygon( (1., 0.5), polygon, closed=False)
     174
     175
    152176    def test_inside_polygon_main(self):
    153177
    154 
    155         #Simplest case: Polygon is the unit square
    156         polygon = [[0,0], [1,0], [1,1], [0,1]]
    157 
    158         assert inside_polygon( (0.5, 0.5), polygon )
    159         assert not inside_polygon( (0.5, 1.5), polygon )
    160         assert not inside_polygon( (0.5, -0.5), polygon )
    161         assert not inside_polygon( (-0.5, 0.5), polygon )
    162         assert not inside_polygon( (1.5, 0.5), polygon )
    163 
    164         #Try point on borders
    165         assert inside_polygon( (1., 0.5), polygon, closed=True)
    166         assert inside_polygon( (0.5, 1), polygon, closed=True)
    167         assert inside_polygon( (0., 0.5), polygon, closed=True)
    168         assert inside_polygon( (0.5, 0.), polygon, closed=True)
    169 
    170         assert not inside_polygon( (0.5, 1), polygon, closed=False)
    171         assert not inside_polygon( (0., 0.5), polygon, closed=False)
    172         assert not inside_polygon( (0.5, 0.), polygon, closed=False)
    173         assert not inside_polygon( (1., 0.5), polygon, closed=False)
    174 
    175 
     178        #Simplest case: Polygon is the unit square
     179        polygon = [[0,0], [1,0], [1,1], [0,1]]       
    176180
    177181        #From real example (that failed)
     
    191195        #More convoluted and non convex polygon
    192196        polygon = [[0,0], [1,0], [0.5,-1], [2, -1], [2,1], [0,1]]
    193         assert inside_polygon( (0.5, 0.5), polygon )
    194         assert inside_polygon( (1, -0.5), polygon )
    195         assert inside_polygon( (1.5, 0), polygon )
    196 
    197         assert not inside_polygon( (0.5, 1.5), polygon )
    198         assert not inside_polygon( (0.5, -0.5), polygon )
     197        assert is_inside_polygon( (0.5, 0.5), polygon )
     198        assert is_inside_polygon( (1, -0.5), polygon )
     199        assert is_inside_polygon( (1.5, 0), polygon )
     200
     201        assert not is_inside_polygon( (0.5, 1.5), polygon )
     202        assert not is_inside_polygon( (0.5, -0.5), polygon )
    199203
    200204
    201205        #Very convoluted polygon
    202206        polygon = [[0,0], [10,10], [15,5], [20, 10], [25,0], [30,10], [40,-10]]
    203         assert inside_polygon( (5, 5), polygon )
    204         assert inside_polygon( (17, 7), polygon )
    205         assert inside_polygon( (27, 2), polygon )
    206         assert inside_polygon( (35, -5), polygon )
    207         assert not inside_polygon( (15, 7), polygon )
    208         assert not inside_polygon( (24, 3), polygon )
    209         assert not inside_polygon( (25, -10), polygon )
     207        assert is_inside_polygon( (5, 5), polygon )
     208        assert is_inside_polygon( (17, 7), polygon )
     209        assert is_inside_polygon( (27, 2), polygon )
     210        assert is_inside_polygon( (35, -5), polygon )
     211        assert not is_inside_polygon( (15, 7), polygon )
     212        assert not is_inside_polygon( (24, 3), polygon )
     213        assert not is_inside_polygon( (25, -10), polygon )
    210214
    211215
     
    213217        #Another combination (that failed)
    214218        polygon = [[0,0], [10,0], [10,10], [0,10]]
    215         assert inside_polygon( (5, 5), polygon )
    216         assert inside_polygon( (7, 7), polygon )
    217         assert not inside_polygon( (-17, 7), polygon )
    218         assert not inside_polygon( (7, 17), polygon )
    219         assert not inside_polygon( (17, 7), polygon )
    220         assert not inside_polygon( (27, 8), polygon )
    221         assert not inside_polygon( (35, -5), polygon )
     219        assert is_inside_polygon( (5, 5), polygon )
     220        assert is_inside_polygon( (7, 7), polygon )
     221        assert not is_inside_polygon( (-17, 7), polygon )
     222        assert not is_inside_polygon( (7, 17), polygon )
     223        assert not is_inside_polygon( (17, 7), polygon )
     224        assert not is_inside_polygon( (27, 8), polygon )
     225        assert not is_inside_polygon( (35, -5), polygon )
    222226
    223227
     
    228232        polygon = [[0,0], [1,0], [1,1], [0,1], [0,0],
    229233                   [10,10], [11,10], [11,11], [10,11], [10,10]]
    230         assert inside_polygon( (0.5, 0.5), polygon )
    231         assert inside_polygon( (10.5, 10.5), polygon )
     234        assert is_inside_polygon( (0.5, 0.5), polygon )
     235        assert is_inside_polygon( (10.5, 10.5), polygon )
    232236
    233237        #FIXME: Fails if point is 5.5, 5.5
    234         assert not inside_polygon( (0, 5.5), polygon )
     238        assert not is_inside_polygon( (0, 5.5), polygon )
    235239
    236240        #Polygon with a hole
     
    238242                   [0,0], [1,0], [1,1], [0,1], [0,0]]
    239243
    240         assert inside_polygon( (0, -0.5), polygon )
    241         assert not inside_polygon( (0.5, 0.5), polygon )
     244        assert is_inside_polygon( (0, -0.5), polygon )
     245        assert not is_inside_polygon( (0.5, 0.5), polygon )
    242246
    243247
     
    249253        polygon = [[0,0], [1,0], [1,0], [1,0], [1,1], [0,1], [0,0]]
    250254
    251         assert inside_polygon( (0.5, 0.5), polygon )
    252         assert not inside_polygon( (0.5, 1.5), polygon )
    253         assert not inside_polygon( (0.5, -0.5), polygon )
    254         assert not inside_polygon( (-0.5, 0.5), polygon )
    255         assert not inside_polygon( (1.5, 0.5), polygon )
     255        assert is_inside_polygon( (0.5, 0.5), polygon )
     256        assert not is_inside_polygon( (0.5, 1.5), polygon )
     257        assert not is_inside_polygon( (0.5, -0.5), polygon )
     258        assert not is_inside_polygon( (-0.5, 0.5), polygon )
     259        assert not is_inside_polygon( (1.5, 0.5), polygon )
    256260
    257261        #Try point on borders
    258         assert inside_polygon( (1., 0.5), polygon, closed=True)
    259         assert inside_polygon( (0.5, 1), polygon, closed=True)
    260         assert inside_polygon( (0., 0.5), polygon, closed=True)
    261         assert inside_polygon( (0.5, 0.), polygon, closed=True)
    262 
    263         assert not inside_polygon( (0.5, 1), polygon, closed=False)
    264         assert not inside_polygon( (0., 0.5), polygon, closed=False)
    265         assert not inside_polygon( (0.5, 0.), polygon, closed=False)
    266         assert not inside_polygon( (1., 0.5), polygon, closed=False)
     262        assert is_inside_polygon( (1., 0.5), polygon, closed=True)
     263        assert is_inside_polygon( (0.5, 1), polygon, closed=True)
     264        assert is_inside_polygon( (0., 0.5), polygon, closed=True)
     265        assert is_inside_polygon( (0.5, 0.), polygon, closed=True)
     266
     267        assert not is_inside_polygon( (0.5, 1), polygon, closed=False)
     268        assert not is_inside_polygon( (0., 0.5), polygon, closed=False)
     269        assert not is_inside_polygon( (0.5, 0.), polygon, closed=False)
     270        assert not is_inside_polygon( (1., 0.5), polygon, closed=False)
    267271
    268272        #From real example
     
    285289        U = [[0,0], [1,0], [1,1], [0,1]] #Unit square   
    286290
    287         assert not outside_polygon( [0.5, 0.5], U )
     291        assert not is_outside_polygon( [0.5, 0.5], U )
    288292        #evaluate to False as the point 0.5, 0.5 is inside the unit square
    289293       
    290         assert outside_polygon( [1.5, 0.5], U )
     294        assert is_outside_polygon( [1.5, 0.5], U )
    291295        #evaluate to True as the point 1.5, 0.5 is outside the unit square
    292296       
     
    315319        #evaluate to False as the point 0.5, 1.0 is inside the unit square
    316320       
    317         assert outside_polygon( [0.5, 1.0], U, closed = False )
     321        assert is_outside_polygon( [0.5, 1.0], U, closed = False )
    318322        #evaluate to True as the point 0.5, 1.0 is outside the unit square
    319323
     
    390394        assert len(points) == 5
    391395        for point in points:
    392             assert inside_polygon(point, polygon)
     396            assert is_inside_polygon(point, polygon)
    393397
    394398
     
    400404        assert len(points) == 5
    401405        for point in points:
    402             assert inside_polygon(point, polygon)
     406            assert is_inside_polygon(point, polygon)
    403407
    404408
     
    412416        assert len(points) == 5
    413417        for point in points:
    414             assert inside_polygon(point, polygon)
    415             assert not inside_polygon(point, ex_poly)           
     418            assert is_inside_polygon(point, polygon)
     419            assert not is_inside_polygon(point, ex_poly)           
    416420
    417421
     
    423427        assert len(points) == 5
    424428        for point in points:
    425             assert inside_polygon(point, polygon)
    426             assert not inside_polygon(point, ex_poly)                       
     429            assert is_inside_polygon(point, polygon)
     430            assert not is_inside_polygon(point, ex_poly)                       
    427431       
    428432        #Multiple
     
    435439        assert len(points) == 20
    436440        for point in points:
    437             assert inside_polygon(point, polygon)
    438             assert not inside_polygon(point, ex_poly1)
    439             assert not inside_polygon(point, ex_poly2)                               
     441            assert is_inside_polygon(point, polygon)
     442            assert not is_inside_polygon(point, ex_poly1)
     443            assert not is_inside_polygon(point, ex_poly2)                               
    440444       
    441445
     
    447451        assert len(points) == 20
    448452        for point in points:
    449             assert inside_polygon(point, polygon)
    450             assert not inside_polygon(point, ex_poly), '%s' %str(point)                       
     453            assert is_inside_polygon(point, polygon)
     454            assert not is_inside_polygon(point, ex_poly), '%s' %str(point)                       
    451455
    452456    def test_point_in_polygon(self):
    453457        polygon = [[0,0], [1,0], [1,1], [0,1]]
    454458        point = point_in_polygon(polygon)
    455         assert inside_polygon(point, polygon)
     459        assert is_inside_polygon(point, polygon)
    456460
    457461        #this may get into a vicious loop
     
    460464        polygon = [[1e15,1e7], [1,0], [1,1], [0,1]]
    461465        point = point_in_polygon(polygon)
    462         assert inside_polygon(point, polygon)
     466        assert is_inside_polygon(point, polygon)
    463467
    464468
    465469        polygon = [[0,0], [1,0], [1,1], [1e8,1e8]]
    466470        point = point_in_polygon(polygon)
    467         assert inside_polygon(point, polygon)
     471        assert is_inside_polygon(point, polygon)
    468472
    469473       
    470474        polygon = [[1e32,1e54], [-1e32,1e54], [1e32,-1e54]]
    471475        point = point_in_polygon(polygon)
    472         assert inside_polygon(point, polygon)
     476        assert is_inside_polygon(point, polygon)
    473477
    474478       
    475479        polygon = [[1e18,1e15], [1,0], [0,1]]
    476480        point = point_in_polygon(polygon)
    477         assert inside_polygon(point, polygon)
     481        assert is_inside_polygon(point, polygon)
    478482
    479483    def test_in_and_outside_polygon_main(self):
     
    599603        assert y[4] == 6
    600604
    601     def test_plot_polygons(self):
    602 
     605    # Disabled   
     606    def xtest_plot_polygons(self):
     607       
    603608        import os
    604609       
     
    638643        points = points_geo_ref.change_points_geo_ref(points_absolute)
    639644
    640         assert inside_polygon( points_absolute, polygon_absolute)
    641        
    642         points_inside = inside_polygon( points, polygon,
     645        assert is_inside_polygon(points_absolute, polygon_absolute)
     646       
     647        points_inside = inside_polygon(points, polygon,
    643648                               polygon_geo_ref=poly_geo_ref,
    644649                               points_geo_ref=points_geo_ref)
     
    647652        #                       polygon_geo_ref=poly_geo_ref,
    648653        #                       points_geo_ref=points_geo_ref))
    649         assert not inside_polygon( (0.5, 1.5), polygon,
    650                                polygon_geo_ref= poly_geo_ref )
    651         assert not inside_polygon( (0.5, -0.5), polygon,
    652                                polygon_geo_ref= poly_geo_ref )
    653         assert not inside_polygon( (-0.5, 0.5), polygon,
    654                                polygon_geo_ref= poly_geo_ref )
    655         assert not inside_polygon( (1.5, 0.5), polygon,
    656                                polygon_geo_ref= poly_geo_ref )
     654        assert not is_inside_polygon((0.5, 1.5), polygon,
     655                                     polygon_geo_ref=poly_geo_ref )
     656        assert not is_inside_polygon((0.5, -0.5), polygon,
     657                                     polygon_geo_ref=poly_geo_ref )
     658        assert not is_inside_polygon((-0.5, 0.5), polygon,
     659                                     polygon_geo_ref=poly_geo_ref )
     660        assert not is_inside_polygon((1.5, 0.5), polygon,
     661                                     polygon_geo_ref=poly_geo_ref )
    657662#-------------------------------------------------------------
    658663if __name__ == "__main__":
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