145 строки
4.9 KiB
Python
Исполняемый файл
145 строки
4.9 KiB
Python
Исполняемый файл
#!/usr/bin/env pytest
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###############################################################################
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# $Id$
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#
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# Project: GDAL/OGR Test Suite
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# Purpose: Test ESRI shapefile spatial index mechanism (.sbn files). This can serve
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# as a test for the functionality of shapelib's sbnsearch.c
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# Author: Even Rouault <even dot rouault at spatialys.com>
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#
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###############################################################################
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# Copyright (c) 2012, Even Rouault <even dot rouault at spatialys.com>
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#
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# Permission is hereby granted, free of charge, to any person obtaining a
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# copy of this software and associated documentation files (the "Software"),
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# to deal in the Software without restriction, including without limitation
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# the rights to use, copy, modify, merge, publish, distribute, sublicense,
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# and/or sell copies of the Software, and to permit persons to whom the
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# Software is furnished to do so, subject to the following conditions:
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#
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# The above copyright notice and this permission notice shall be included
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# in all copies or substantial portions of the Software.
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#
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# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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# DEALINGS IN THE SOFTWARE.
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###############################################################################
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import os
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import gdaltest
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import pytest
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from osgeo import ogr
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###############################################################################
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#
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def search_all_features(lyr):
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geoms = []
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lyr.SetSpatialFilter(None)
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extents = lyr.GetExtent()
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fc_ref = lyr.GetFeatureCount()
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feat = lyr.GetNextFeature()
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while feat is not None:
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geom = feat.GetGeometryRef()
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geoms.append(geom.Clone())
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feat = lyr.GetNextFeature()
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# Test getting each geom 1 by 1
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for geom in geoms:
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bbox = geom.GetEnvelope()
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lyr.SetSpatialFilterRect(bbox[0], bbox[2], bbox[1], bbox[3])
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lyr.ResetReading()
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found_geom = False
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feat = lyr.GetNextFeature()
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while feat is not None and found_geom is False:
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got_geom = feat.GetGeometryRef()
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if got_geom.Equals(geom) == 1:
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found_geom = True
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else:
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feat = lyr.GetNextFeature()
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assert found_geom, "did not find geometry for %s" % (geom.ExportToWkt())
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# Get all geoms in a single gulp. We do not use exactly the extent bounds, because
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# there is an optimization in the shapefile driver to skip the spatial index in that
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# case.
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eps = 0.0001
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lyr.SetSpatialFilterRect(
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extents[0] + eps, extents[2] + eps, extents[1] - eps, extents[3] - eps
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)
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lyr.ResetReading()
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fc = lyr.GetFeatureCount()
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# For point layers, we need a special case since there may be points on the border
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# of the extent
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if lyr.GetGeomType() == ogr.wkbPoint:
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lyr.SetSpatialFilterRect(
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extents[0], extents[2] + eps, extents[0] + eps, extents[3] - eps
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)
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lyr.ResetReading()
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fc = fc + lyr.GetFeatureCount()
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lyr.SetSpatialFilterRect(
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extents[1] - eps, extents[2] + eps, extents[1], extents[3] - eps
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)
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lyr.ResetReading()
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fc = fc + lyr.GetFeatureCount()
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lyr.SetSpatialFilterRect(extents[0], extents[2], extents[1], extents[2] + eps)
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lyr.ResetReading()
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fc = fc + lyr.GetFeatureCount()
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lyr.SetSpatialFilterRect(extents[0], extents[3] - eps, extents[1], extents[3])
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lyr.ResetReading()
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fc = fc + lyr.GetFeatureCount()
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assert fc == fc_ref, "layer %s: expected %d. got %d" % (lyr.GetName(), fc_ref, fc)
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###############################################################################
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# Test
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def test_ogr_shape_sbn_1():
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gdaltest.download_or_skip(
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"http://pubs.usgs.gov/sim/3194/contents/Cochiti_shapefiles.zip",
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"Cochiti_shapefiles.zip",
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)
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try:
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os.stat("tmp/cache/CochitiDamShapeFiles/CochitiBoundary.shp")
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except OSError:
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try:
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gdaltest.unzip("tmp/cache", "tmp/cache/Cochiti_shapefiles.zip")
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try:
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os.stat("tmp/cache/CochitiDamShapeFiles/CochitiBoundary.shp")
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except OSError:
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pytest.skip()
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except OSError:
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pytest.skip()
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ds = ogr.Open("tmp/cache/CochitiDamShapeFiles")
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for i in range(ds.GetLayerCount()):
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lyr = ds.GetLayer(i)
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search_all_features(lyr)
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###############################################################################
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# Test
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def test_ogr_shape_sbn_2():
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ds = ogr.Open("data/shp/CoHI_GCS12.shp")
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lyr = ds.GetLayer(0)
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return search_all_features(lyr)
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