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test_qgsgeometry.py
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test_qgsgeometry.py
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# -*- coding: utf-8 -*-
"""QGIS Unit tests for QgsGeometry.
.. note:: This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
"""
__author__ = 'Tim Sutton'
__date__ = '20/08/2012'
__copyright__ = 'Copyright 2012, The QGIS Project'
# This will get replaced with a git SHA1 when you do a git archive
__revision__ = '$Format:%H$'
import os
import qgis
from qgis.core import (QgsGeometry,
QgsVectorLayer,
QgsFeature,
QgsPoint,
QgsCoordinateReferenceSystem,
QgsCoordinateTransform,
QgsRectangle,
QGis)
from utilities import (getQgisTestApp,
TestCase,
unittest,
compareWkt,
expectedFailure,
unitTestDataPath,
writeShape)
from PyQt4.QtCore import qDebug
# Convenience instances in case you may need them not used in this test
QGISAPP, CANVAS, IFACE, PARENT = getQgisTestApp()
class TestQgsGeometry(TestCase):
wkbPtr = 1
def testWktPointLoading(self):
myWKT='POINT(10 10)'
myGeometry = QgsGeometry.fromWkt(myWKT)
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(QGis.WKBPoint, myGeometry.type()))
assert myGeometry.wkbType() == QGis.WKBPoint, myMessage
def testFromPoint(self):
myPoint = QgsGeometry.fromPoint(QgsPoint(10, 10))
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(QGis.WKBPoint, myPoint.type()))
assert myPoint.wkbType() == QGis.WKBPoint, myMessage
def testFromMultiPoint(self):
myMultiPoint = QgsGeometry.fromMultiPoint([
(QgsPoint(0, 0)),(QgsPoint(1, 1))])
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(QGis.WKBMultiPoint, myMultiPoint.type()))
assert myMultiPoint.wkbType() == QGis.WKBMultiPoint, myMessage
def testFromLine(self):
myLine = QgsGeometry.fromPolyline([QgsPoint(1, 1), QgsPoint(2, 2)])
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(QGis.WKBLineString, myLine.type()))
assert myLine.wkbType() == QGis.WKBLineString, myMessage
def testFromMultiLine(self):
myMultiPolyline = QgsGeometry.fromMultiPolyline(
[[QgsPoint(0, 0),QgsPoint(1, 1)],[QgsPoint(0, 1), QgsPoint(2, 1)]])
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(QGis.WKBMultiLineString, myMultiPolyline.type()))
assert myMultiPolyline.wkbType() == QGis.WKBMultiLineString, myMessage
def testFromPolygon(self):
myPolygon = QgsGeometry.fromPolygon(
[[QgsPoint(1, 1), QgsPoint(2, 2), QgsPoint(1, 2), QgsPoint(1, 1)]])
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(QGis.WKBPolygon, myPolygon.type()))
assert myPolygon.wkbType() == QGis.WKBPolygon, myMessage
def testFromMultiPolygon(self):
myMultiPolygon = QgsGeometry.fromMultiPolygon([
[[QgsPoint(1, 1),
QgsPoint(2, 2),
QgsPoint(1, 2),
QgsPoint(1, 1)]],
[[QgsPoint(2, 2),
QgsPoint(3, 3),
QgsPoint(3, 1),
QgsPoint(2, 2)]]
])
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(QGis.WKBMultiPolygon, myMultiPolygon.type()))
assert myMultiPolygon.wkbType() == QGis.WKBMultiPolygon, myMessage
def testIntersection(self):
myLine = QgsGeometry.fromPolyline([
QgsPoint(0, 0),
QgsPoint(1, 1),
QgsPoint(2, 2)])
myPoint = QgsGeometry.fromPoint(QgsPoint(1, 1))
intersectionGeom = QgsGeometry.intersection(myLine, myPoint)
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(QGis.Point, intersectionGeom.type()))
assert intersectionGeom.wkbType() == QGis.WKBPoint, myMessage
layer = QgsVectorLayer("Point", "intersection", "memory")
assert layer.isValid(), "Failed to create valid point memory layer"
provider = layer.dataProvider()
ft = QgsFeature()
ft.setGeometry(intersectionGeom)
provider.addFeatures([ft])
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(1, layer.featureCount()))
assert layer.featureCount() == 1, myMessage
def testBuffer(self):
myPoint = QgsGeometry.fromPoint(QgsPoint(1, 1))
bufferGeom = myPoint.buffer(10, 5)
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
(QGis.Polygon, bufferGeom.type()))
assert bufferGeom.wkbType() == QGis.WKBPolygon, myMessage
myTestPoint = QgsGeometry.fromPoint(QgsPoint(3, 3))
assert bufferGeom.intersects(myTestPoint)
def testContains(self):
myPoly = QgsGeometry.fromPolygon(
[[QgsPoint(0, 0),
QgsPoint(2, 0),
QgsPoint(2, 2),
QgsPoint(0, 2),
QgsPoint(0, 0)]])
myPoint = QgsGeometry.fromPoint(QgsPoint(1, 1))
containsGeom = QgsGeometry.contains(myPoly, myPoint)
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
("True", containsGeom))
assert containsGeom == True, myMessage
def testTouches(self):
myLine = QgsGeometry.fromPolyline([
QgsPoint(0, 0),
QgsPoint(1, 1),
QgsPoint(2, 2)])
myPoly = QgsGeometry.fromPolygon([[
QgsPoint(0, 0),
QgsPoint(1, 1),
QgsPoint(2, 0),
QgsPoint(0, 0)]])
touchesGeom = QgsGeometry.touches(myLine, myPoly)
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
("True", touchesGeom))
assert touchesGeom == True, myMessage
def testOverlaps(self):
myPolyA = QgsGeometry.fromPolygon([[
QgsPoint(0, 0),
QgsPoint(1, 3),
QgsPoint(2, 0),
QgsPoint(0, 0)]])
myPolyB = QgsGeometry.fromPolygon([[
QgsPoint(0, 0),
QgsPoint(2, 0),
QgsPoint(2, 2),
QgsPoint(0, 2),
QgsPoint(0, 0)]])
overlapsGeom = QgsGeometry.overlaps(myPolyA, myPolyB)
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
("True", overlapsGeom))
assert overlapsGeom == True, myMessage
def testWithin(self):
myLine = QgsGeometry.fromPolyline([
QgsPoint(0.5, 0.5),
QgsPoint(1, 1),
QgsPoint(1.5, 1.5)
])
myPoly = QgsGeometry.fromPolygon([[
QgsPoint(0, 0),
QgsPoint(2, 0),
QgsPoint(2, 2),
QgsPoint(0, 2),
QgsPoint(0, 0)]])
withinGeom = QgsGeometry.within(myLine, myPoly)
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
("True", withinGeom))
assert withinGeom == True, myMessage
def testEquals(self):
myPointA = QgsGeometry.fromPoint(QgsPoint(1, 1))
myPointB = QgsGeometry.fromPoint(QgsPoint(1, 1))
equalsGeom = QgsGeometry.equals(myPointA, myPointB)
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
("True", equalsGeom))
assert equalsGeom == True, myMessage
def testCrosses(self):
myLine = QgsGeometry.fromPolyline([
QgsPoint(0, 0),
QgsPoint(1, 1),
QgsPoint(3, 3)])
myPoly = QgsGeometry.fromPolygon([[
QgsPoint(1, 0),
QgsPoint(2, 0),
QgsPoint(2, 2),
QgsPoint(1, 2),
QgsPoint(1, 0)]])
crossesGeom = QgsGeometry.crosses(myLine, myPoly)
myMessage = ('Expected:\n%s\nGot:\n%s\n' %
("True", crossesGeom))
assert crossesGeom == True, myMessage
def testSimplifyIssue4189(self):
"""Test we can simplify a complex geometry.
Note: there is a ticket related to this issue here:
http://hub.qgis.org/issues/4189
Backstory: Ole Nielson pointed out an issue to me
(Tim Sutton) where simplify ftools was dropping
features. This test replicates that issues.
Interestingly we could replicate the issue in PostGIS too:
- doing straight simplify returned no feature
- transforming to UTM49, then simplify with e.g. 200 threshold is ok
- as above with 500 threshold drops the feature
pgsql2shp -f /tmp/dissolve500.shp gis 'select *,
transform(simplify(transform(geom,32649),500), 4326) as
simplegeom from dissolve;'
"""
myWKTFile = file(os.path.join(unitTestDataPath('wkt'),
'simplify_error.wkt'), 'rt')
myWKT = myWKTFile.readline()
myWKTFile.close()
print myWKT
myGeometry = QgsGeometry().fromWkt(myWKT)
assert myGeometry is not None
myStartLength = len(myWKT)
myTolerance = 0.00001
mySimpleGeometry = myGeometry.simplify(myTolerance)
myEndLength = len(mySimpleGeometry.exportToWkt())
myMessage = 'Before simplify: %i\nAfter simplify: %i\n : Tolerance %e' % (
myStartLength, myEndLength, myTolerance)
myMinimumLength = len('POLYGON(())')
assert myEndLength > myMinimumLength, myMessage
def testClipping(self):
"""Test that we can clip geometries using other geometries."""
myMemoryLayer = QgsVectorLayer(
('LineString?crs=epsg:4326&field=name:string(20)&index=yes'),
'clip-in',
'memory')
assert myMemoryLayer is not None, 'Provider not initialised'
myProvider = myMemoryLayer.dataProvider()
assert myProvider is not None
myFeature1 = QgsFeature()
myFeature1.setGeometry(QgsGeometry.fromPolyline([
QgsPoint(10,10),
QgsPoint(20,10),
QgsPoint(30,10),
QgsPoint(40,10),
]
))
myFeature1.setAttributes(['Johny'])
myFeature2 = QgsFeature()
myFeature2.setGeometry(QgsGeometry.fromPolyline([
QgsPoint(10,10),
QgsPoint(20,20),
QgsPoint(30,30),
QgsPoint(40,40),
]
))
myFeature2.setAttributes(['Be'])
myFeature3 = QgsFeature()
myFeature3.setGeometry(QgsGeometry.fromPolyline([
QgsPoint(10,10),
QgsPoint(10,20),
QgsPoint(10,30),
QgsPoint(10,40),
]
))
myFeature3.setAttributes(['Good'])
myResult, myFeatures = myProvider.addFeatures(
[myFeature1, myFeature2, myFeature3])
assert myResult == True
assert len(myFeatures) == 3
myClipPolygon = QgsGeometry.fromPolygon([[
QgsPoint(20,20),
QgsPoint(20,30),
QgsPoint(30,30),
QgsPoint(30,20),
QgsPoint(20,20),
]]
)
print 'Clip: %s' % myClipPolygon.exportToWkt()
writeShape(myMemoryLayer, 'clipGeometryBefore.shp')
fit = myProvider.getFeatures()
myFeatures = []
myFeature = QgsFeature()
while fit.nextFeature(myFeature):
myGeometry = myFeature.geometry()
if myGeometry.intersects(myClipPolygon):
# Adds nodes where the clip and the line intersec
myCombinedGeometry = myGeometry.combine(myClipPolygon)
# Gives you the areas inside the clip
mySymmetricalGeometry = myGeometry.symDifference(
myCombinedGeometry)
# Gives you areas outside the clip area
# myDifferenceGeometry = myCombinedGeometry.difference(
# myClipPolygon)
#print 'Original: %s' % myGeometry.exportToWkt()
#print 'Combined: %s' % myCombinedGeometry.exportToWkt()
#print 'Difference: %s' % myDifferenceGeometry.exportToWkt()
print 'Symmetrical: %s' % mySymmetricalGeometry.exportToWkt()
myExpectedWkt = 'LINESTRING(20 20, 30 30)'
# There should only be one feature that intersects this clip
# poly so this assertion should work.
assert compareWkt( myExpectedWkt,
mySymmetricalGeometry.exportToWkt() )
myNewFeature = QgsFeature()
myNewFeature.setAttributes(myFeature.attributes())
myNewFeature.setGeometry(mySymmetricalGeometry)
myFeatures.append(myNewFeature)
myNewMemoryLayer = QgsVectorLayer(
('LineString?crs=epsg:4326&field=name:string(20)&index=yes'),
'clip-out',
'memory')
myNewProvider = myNewMemoryLayer.dataProvider()
myResult, myFeatures = myNewProvider.addFeatures(myFeatures)
self.assertTrue(myResult)
self.assertEqual(len(myFeatures), 1)
writeShape(myNewMemoryLayer, 'clipGeometryAfter.shp')
def testClosestVertex(self):
# 2-+-+-+-+-3
# | |
# + 6-+-+-7 +
# | | | |
# + + 9-+-8 +
# | | |
# ! 5-+-+-+-4 !
# |
# 1-+-+-+-+-0 !
polyline = QgsGeometry.fromPolyline(
[ QgsPoint(5,0), QgsPoint(0,0), QgsPoint(0,4), QgsPoint(5,4), QgsPoint(5,1), QgsPoint(1,1), QgsPoint(1,3), QgsPoint(4,3), QgsPoint(4,2), QgsPoint(2,2) ]
)
(point, atVertex, beforeVertex, afterVertex, dist ) = polyline.closestVertex( QgsPoint(6,1) )
self.assertEqual( point, QgsPoint(5,1) )
self.assertEqual( beforeVertex, 3 )
self.assertEqual( atVertex, 4 )
self.assertEqual( afterVertex, 5 )
self.assertEqual( dist, 1 )
(dist,minDistPoint,afterVertex) = polyline.closestSegmentWithContext( QgsPoint(6,2) )
self.assertEqual( dist, 1 )
self.assertEqual( minDistPoint, QgsPoint(5,2) )
self.assertEqual( afterVertex, 4)
(point, atVertex, beforeVertex, afterVertex, dist ) = polyline.closestVertex( QgsPoint(6,0) )
self.assertEqual( point, QgsPoint(5,0) )
self.assertEqual( beforeVertex, -1 )
self.assertEqual( atVertex, 0 )
self.assertEqual( afterVertex, 1 )
self.assertEqual( dist, 1 )
(dist,minDistPoint,afterVertex) = polyline.closestSegmentWithContext( QgsPoint(6,0) )
self.assertEqual( dist, 1 )
self.assertEqual( minDistPoint, QgsPoint(5,0) )
self.assertEqual( afterVertex, 1)
(point, atVertex, beforeVertex, afterVertex, dist ) = polyline.closestVertex( QgsPoint(0,1) )
self.assertEqual( point, QgsPoint(0,0) )
self.assertEqual( beforeVertex, 0 )
self.assertEqual( atVertex, 1 )
self.assertEqual( afterVertex, 2 )
self.assertEqual( dist, 1 )
(dist,minDistPoint,afterVertex) = polyline.closestSegmentWithContext( QgsPoint(0,1) )
self.assertEqual( dist, 0 )
self.assertEqual( minDistPoint, QgsPoint(0,1) )
self.assertEqual( afterVertex, 2)
# 2-3 6-+-7 !
# | | | |
# 0-1 4 5 8-9
polyline = QgsGeometry.fromMultiPolyline(
[
[ QgsPoint(0,0), QgsPoint(1,0), QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,0), ],
[ QgsPoint(3,0), QgsPoint(3,1), QgsPoint(5,1), QgsPoint(5,0), QgsPoint(6,0), ]
]
)
(point, atVertex, beforeVertex, afterVertex, dist ) = polyline.closestVertex( QgsPoint(6,1) )
self.assertEqual( point, QgsPoint(5,1) )
self.assertEqual( beforeVertex, 6 )
self.assertEqual( atVertex, 7 )
self.assertEqual( afterVertex, 8 )
self.assertEqual( dist, 1 )
(dist,minDistPoint,afterVertex) = polyline.closestSegmentWithContext( QgsPoint(7,0) )
self.assertEqual( dist, 1 )
self.assertEqual( minDistPoint, QgsPoint(6,0) )
self.assertEqual( afterVertex, 9)
# 5---4
# |! |
# | 2-3
# | |
# 0-1
polygon = QgsGeometry.fromPolygon(
[[
QgsPoint(0,0), QgsPoint(1,0), QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,2), QgsPoint(0,2), QgsPoint(0,0),
]]
)
(point, atVertex, beforeVertex, afterVertex, dist ) = polygon.closestVertex( QgsPoint(0.7,1.1) )
self.assertEqual( point, QgsPoint(1,1) )
self.assertEqual( beforeVertex, 1 )
self.assertEqual( atVertex, 2 )
self.assertEqual( afterVertex, 3 )
assert abs( dist - 0.1 ) < 0.00001, "Expected: %f; Got:%f" % (dist,0.1)
(dist,minDistPoint,afterVertex) = polygon.closestSegmentWithContext( QgsPoint(0.7,1.1) )
self.assertEqual( afterVertex, 2)
self.assertEqual( minDistPoint, QgsPoint(1,1) )
exp = 0.3**2 + 0.1**2
assert abs( dist - exp ) < 0.00001, "Expected: %f; Got:%f" % (exp,dist)
# 3-+-+-2
# | |
# + 8-7 +
# | |!| |
# + 5-6 +
# | |
# 0-+-+-1
polygon = QgsGeometry.fromPolygon(
[
[ QgsPoint(0,0), QgsPoint(3,0), QgsPoint(3,3), QgsPoint(0,3), QgsPoint(0,0) ],
[ QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,2), QgsPoint(1,2), QgsPoint(1,1) ],
]
)
(point, atVertex, beforeVertex, afterVertex, dist ) = polygon.closestVertex( QgsPoint(1.1,1.9) )
self.assertEqual( point, QgsPoint(1,2) )
self.assertEqual( beforeVertex, 7 )
self.assertEqual( atVertex, 8 )
self.assertEqual( afterVertex, 9 )
assert abs( dist - 0.02 ) < 0.00001, "Expected: %f; Got:%f" % (dist,0.02)
(dist,minDistPoint,afterVertex) = polygon.closestSegmentWithContext( QgsPoint(1.2,1.9) )
self.assertEqual( afterVertex, 8)
self.assertEqual( minDistPoint, QgsPoint(1.2,2) )
exp = 0.01
assert abs( dist - exp ) < 0.00001, "Expected: %f; Got:%f" % (exp,dist)
# 5-+-4 0-+-9
# | | | |
# 6 2-3 1-2!+
# | | | |
# 0-1 7-8
polygon = QgsGeometry.fromMultiPolygon(
[
[ [ QgsPoint(0,0), QgsPoint(1,0), QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,2), QgsPoint(0,2), QgsPoint(0,0), ] ],
[ [ QgsPoint(4,0), QgsPoint(5,0), QgsPoint(5,2), QgsPoint(3,2), QgsPoint(3,1), QgsPoint(4,1), QgsPoint(4,0), ] ]
]
)
(point, atVertex, beforeVertex, afterVertex, dist ) = polygon.closestVertex( QgsPoint(4.1,1.1) )
self.assertEqual( point, QgsPoint(4,1) )
self.assertEqual( beforeVertex, 11 )
self.assertEqual( atVertex, 12 )
self.assertEqual( afterVertex, 13 )
assert abs( dist - 0.02 ) < 0.00001, "Expected: %f; Got:%f" % (dist,0.02)
(dist,minDistPoint,afterVertex) = polygon.closestSegmentWithContext( QgsPoint(4.1,1.1) )
self.assertEqual( afterVertex, 12)
self.assertEqual( minDistPoint, QgsPoint(4,1) )
exp = 0.02
assert abs( dist - exp ) < 0.00001, "Expected: %f; Got:%f" % (exp,dist)
def testAdjacentVertex(self):
# 2-+-+-+-+-3
# | |
# + 6-+-+-7 +
# | | | |
# + + 9-+-8 +
# | | |
# ! 5-+-+-+-4 !
# |
# 1-+-+-+-+-0 !
polyline = QgsGeometry.fromPolyline(
[ QgsPoint(5,0), QgsPoint(0,0), QgsPoint(0,4), QgsPoint(5,4), QgsPoint(5,1), QgsPoint(1,1), QgsPoint(1,3), QgsPoint(4,3), QgsPoint(4,2), QgsPoint(2,2) ]
)
# don't crash
(before,after) = polyline.adjacentVertices(-100)
if TestQgsGeometry.wkbPtr:
# CHANGE previous implementation returned (-101,-99) here
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
for i in range(0, 10):
(before,after) = polyline.adjacentVertices(i)
if i==0:
assert before==-1 and after==1, "Expected (0,1), Got:(%d,%d)" % (before,after)
elif i==9:
assert before==i-1 and after==-1, "Expected (0,1), Got:(%d,%d)" % (before,after)
else:
assert before==i-1 and after==i+1, "Expected (0,1), Got:(%d,%d)" % (before,after)
(before,after) = polyline.adjacentVertices(100)
if TestQgsGeometry.wkbPtr:
# CHANGE previous implementation returned (99,101) here
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
# 2-3 6-+-7
# | | | |
# 0-1 4 5 8-9
polyline = QgsGeometry.fromMultiPolyline(
[
[ QgsPoint(0,0), QgsPoint(1,0), QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,0), ],
[ QgsPoint(3,0), QgsPoint(3,1), QgsPoint(5,1), QgsPoint(5,0), QgsPoint(6,0), ]
]
)
(before,after) = polyline.adjacentVertices(-100)
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
for i in range(0,10):
(before,after) = polyline.adjacentVertices(i)
if i==0 or i==5:
assert before==-1 and after==i+1, "Expected (-1,%d), Got:(%d,%d)" % (i+1,before,after)
elif i==4 or i==9:
assert before==i-1 and after==-1, "Expected (%d,-1), Got:(%d,%d)" % (i-1,before,after)
else:
assert before==i-1 and after==i+1, "Expected (%d,%d), Got:(%d,%d)" % (i-1,i+1,before,after)
(before,after) = polyline.adjacentVertices(100)
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
# 5---4
# | |
# | 2-3
# | |
# 0-1
polygon = QgsGeometry.fromPolygon(
[[
QgsPoint(0,0), QgsPoint(1,0), QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,2), QgsPoint(0,2), QgsPoint(0,0),
]]
)
(before,after) = polygon.adjacentVertices(-100)
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
for i in range(0,7):
(before,after) = polygon.adjacentVertices(i)
if i==0 or i==6:
assert before==5 and after==1, "Expected (5,1), Got:(%d,%d)" % (before,after)
else:
assert before==i-1 and after==i+1, "Expected (%d,%d), Got:(%d,%d)" % (i-1,i+1,before,after)
(before,after) = polygon.adjacentVertices(100)
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
# 3-+-+-2
# | |
# + 8-7 +
# | | | |
# + 5-6 +
# | |
# 0-+-+-1
polygon = QgsGeometry.fromPolygon(
[
[ QgsPoint(0,0), QgsPoint(3,0), QgsPoint(3,3), QgsPoint(0,3), QgsPoint(0,0) ],
[ QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,2), QgsPoint(1,2), QgsPoint(1,1) ],
]
)
(before,after) = polygon.adjacentVertices(-100)
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
for i in range(0,8):
(before,after) = polygon.adjacentVertices(i)
if i==0 or i==4:
assert before==3 and after==1, "Expected (3,1), Got:(%d,%d)" % (before,after)
elif i==5:
assert before==8 and after==6, "Expected (2,0), Got:(%d,%d)" % (before,after)
else:
assert before==i-1 and after==i+1, "Expected (%d,%d), Got:(%d,%d)" % (i-1,i+1,before,after)
(before,after) = polygon.adjacentVertices(100)
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
# 5-+-4 0-+-9
# | | | |
# | 2-3 1-2 |
# | | | |
# 0-1 7-8
polygon = QgsGeometry.fromMultiPolygon(
[
[ [ QgsPoint(0,0), QgsPoint(1,0), QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,2), QgsPoint(0,2), QgsPoint(0,0), ] ],
[ [ QgsPoint(4,0), QgsPoint(5,0), QgsPoint(5,2), QgsPoint(3,2), QgsPoint(3,1), QgsPoint(4,1), QgsPoint(4,0), ] ]
]
)
(before,after) = polygon.adjacentVertices(-100)
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
for i in range(0,14):
(before,after) = polygon.adjacentVertices(i)
if i==0 or i==6:
assert before==5 and after==1, "Expected (5,1), Got:(%d,%d)" % (before,after)
elif i==7 or i==13:
assert before==12 and after==8, "Expected (12,8), Got:(%d,%d)" % (before,after)
else:
assert before==i-1 and after==i+1, "Expected (%d,%d), Got:(%d,%d)" % (i-1,i+1,before,after)
(before,after) = polygon.adjacentVertices(100)
assert before==-1 and after==-1, "Expected (-1,-1), Got:(%d,%d)" % (before,after)
def testVertexAt(self):
# 2-+-+-+-+-3
# | |
# + 6-+-+-7 +
# | | | |
# + + 9-+-8 +
# | | |
# ! 5-+-+-+-4 !
# |
# 1-+-+-+-+-0 !
points = [ QgsPoint(5,0), QgsPoint(0,0), QgsPoint(0,4), QgsPoint(5,4), QgsPoint(5,1), QgsPoint(1,1), QgsPoint(1,3), QgsPoint(4,3), QgsPoint(4,2), QgsPoint(2,2) ]
polyline = QgsGeometry.fromPolyline(points)
for i in range(0, len(points)):
assert points[i] == polyline.vertexAt(i), "Mismatch at %d" % i
# 2-3 6-+-7
# | | | |
# 0-1 4 5 8-9
points = [
[ QgsPoint(0,0), QgsPoint(1,0), QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,0), ],
[ QgsPoint(3,0), QgsPoint(3,1), QgsPoint(5,1), QgsPoint(5,0), QgsPoint(6,0), ]
]
polyline = QgsGeometry.fromMultiPolyline(points)
p = polyline.vertexAt(-100)
assert p==QgsPoint(0,0), "Expected 0,0, Got %s" % p.toString()
p = polyline.vertexAt(100)
assert p==QgsPoint(0,0), "Expected 0,0, Got %s" % p.toString()
i = 0
for j in range(0, len(points)):
for k in range(0, len(points[j])):
assert points[j][k] == polyline.vertexAt(i), "Mismatch at %d / %d,%d" % (i,j,k)
i+=1
# 5---4
# | |
# | 2-3
# | |
# 0-1
points = [[
QgsPoint(0,0), QgsPoint(1,0), QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,2), QgsPoint(0,2), QgsPoint(0,0),
]]
polygon = QgsGeometry.fromPolygon(points)
p = polygon.vertexAt(-100)
assert p==QgsPoint(0,0), "Expected 0,0, Got %s" % p.toString()
p = polygon.vertexAt(100)
assert p==QgsPoint(0,0), "Expected 0,0, Got %s" % p.toString()
i = 0
for j in range(0, len(points)):
for k in range(0, len(points[j])):
assert points[j][k] == polygon.vertexAt(i), "Mismatch at %d / %d,%d" % (i,j,k)
i+=1
# 3-+-+-2
# | |
# + 8-7 +
# | | | |
# + 5-6 +
# | |
# 0-+-+-1
points = [
[ QgsPoint(0,0), QgsPoint(3,0), QgsPoint(3,3), QgsPoint(0,3), QgsPoint(0,0) ],
[ QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,2), QgsPoint(1,2), QgsPoint(1,1) ],
]
polygon = QgsGeometry.fromPolygon(points)
p = polygon.vertexAt(-100)
assert p==QgsPoint(0,0), "Expected 0,0, Got %s" % p.toString()
p = polygon.vertexAt(100)
assert p==QgsPoint(0,0), "Expected 0,0, Got %s" % p.toString()
i = 0
for j in range(0, len(points)):
for k in range(0, len(points[j])):
assert points[j][k] == polygon.vertexAt(i), "Mismatch at %d / %d,%d" % (i,j,k)
i+=1
# 5-+-4 0-+-9
# | | | |
# | 2-3 1-2 |
# | | | |
# 0-1 7-8
points = [
[ [ QgsPoint(0,0), QgsPoint(1,0), QgsPoint(1,1), QgsPoint(2,1), QgsPoint(2,2), QgsPoint(0,2), QgsPoint(0,0), ] ],
[ [ QgsPoint(4,0), QgsPoint(5,0), QgsPoint(5,2), QgsPoint(3,2), QgsPoint(3,1), QgsPoint(4,1), QgsPoint(4,0), ] ]
]
polygon = QgsGeometry.fromMultiPolygon(points)
p = polygon.vertexAt(-100)
assert p==QgsPoint(0,0), "Expected 0,0, Got %s" % p.toString()
p = polygon.vertexAt(100)
assert p==QgsPoint(0,0), "Expected 0,0, Got %s" % p.toString()
i = 0
for j in range(0, len(points)):
for k in range(0, len(points[j])):
for l in range(0, len(points[j][k])):
p = polygon.vertexAt(i)
assert points[j][k][l] == p, "Got %s, Expected %s at %d / %d,%d,%d" % (p.toString(),points[j][k][l].toString(),i,j,k,l)
i+=1
def testMultipoint(self):
# CHANGE previous implementation didn't support multipoint too much
if not TestQgsGeometry.wkbPtr:
return
# #9423
points = [ QgsPoint(10, 30), QgsPoint(40, 20), QgsPoint(30,10), QgsPoint(20,10) ]
wkt = "MULTIPOINT (10 30, 40 20, 30 10, 20 10)"
multipoint = QgsGeometry.fromWkt(wkt)
assert multipoint.isMultipart(), "Expected MULTIPOINT to be multipart"
assert multipoint.wkbType() == QGis.WKBMultiPoint, "Expected wkbType to be WKBMultipoint"
i = 0
for p in multipoint.asMultiPoint():
assert p == points[i], "Expected %s at %d, got %s" % (points[i].toString(), i, p.toString())
i+=1
multipoint = QgsGeometry.fromWkt( "MULTIPOINT(5 5)" )
assert multipoint.vertexAt( 0 ) == QgsPoint(5,5), "MULTIPOINT fromWkt failed"
assert multipoint.insertVertex(4, 4, 0), "MULTIPOINT insert 4,4 at 0 failed"
expwkt = "MULTIPOINT(4 4, 5 5)"
wkt = multipoint.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert multipoint.insertVertex(7, 7, 2), "MULTIPOINT append 7,7 at 2 failed"
expwkt = "MULTIPOINT(4 4, 5 5, 7 7)"
wkt = multipoint.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert multipoint.insertVertex(6, 6, 2), "MULTIPOINT append 6,6 at 2 failed"
expwkt = "MULTIPOINT(4 4, 5 5, 6 6, 7 7)"
wkt = multipoint.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert not multipoint.deleteVertex(4), "MULTIPOINT delete at 4 unexpectedly succeeded"
assert not multipoint.deleteVertex(-1), "MULTIPOINT delete at -1 unexpectedly succeeded"
assert multipoint.deleteVertex(1), "MULTIPOINT delete at 1 failed"
expwkt = "MULTIPOINT(4 4, 6 6, 7 7)"
wkt = multipoint.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert multipoint.deleteVertex(2), "MULTIPOINT delete at 2 failed"
expwkt = "MULTIPOINT(4 4, 6 6)"
wkt = multipoint.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert multipoint.deleteVertex(0), "MULTIPOINT delete at 2 failed"
expwkt = "MULTIPOINT(6 6)"
wkt = multipoint.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
def testMoveVertex(self):
multipoint = QgsGeometry.fromWkt( "MULTIPOINT(5 0,0 0,0 4,5 4,5 1,1 1,1 3,4 3,4 2,2 2)" )
for i in range(0,10):
assert multipoint.moveVertex( i+1, -1-i, i ), "move vertex %d failed" % i
expwkt = "MULTIPOINT(1 -1, 2 -2, 3 -3, 4 -4, 5 -5, 6 -6, 7 -7, 8 -8, 9 -9, 10 -10)"
wkt = multipoint.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
# 2-+-+-+-+-3
# | |
# + 6-+-+-7 +
# | | | |
# + + 9-+-8 +
# | | |
# ! 5-+-+-+-4 !
# |
# 1-+-+-+-+-0 !
polyline = QgsGeometry.fromWkt( "LINESTRING(5 0,0 0,0 4,5 4,5 1,1 1,1 3,4 3,4 2,2 2)" )
assert polyline.moveVertex( 5.5, 4.5, 3 ), "move vertex failed"
expwkt = "LINESTRING(5 0, 0 0, 0 4, 5.5 4.5, 5 1, 1 1, 1 3, 4 3, 4 2, 2 2)"
wkt = polyline.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
# 5-+-4
# | |
# 6 2-3
# | |
# 0-1
polygon = QgsGeometry.fromWkt( "POLYGON((0 0,1 0,1 1,2 1,2 2,0 2,0 0))" )
assert not polygon.moveVertex( 3, 4, -10 ), "move vertex unexpectedly succeeded"
assert not polygon.moveVertex( 3, 4, 7 ), "move vertex unexpectedly succeeded"
assert polygon.moveVertex( 1, 2, 0 ), "move vertex failed"
expwkt = "POLYGON((1 2,1 0,1 1,2 1,2 2,0 2,1 2))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert polygon.moveVertex( 3, 4, 3 ), "move vertex failed"
expwkt = "POLYGON((1 2,1 0,1 1,3 4,2 2,0 2,1 2))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert polygon.moveVertex( 2, 3, 6 ), "move vertex failed"
expwkt = "POLYGON((2 3,1 0,1 1,3 4,2 2,0 2,2 3))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
# 5-+-4 0-+-9
# | | | |
# 6 2-3 1-2!+
# | | | |
# 0-1 7-8
polygon = QgsGeometry.fromWkt( "MULTIPOLYGON(((0 0,1 0,1 1,2 1,2 2,0 2,0 0)),((4 0,5 0,5 2,3 2,3 1,4 1,4 0)))" )
assert polygon.moveVertex( 6, 2, 9 ), "move vertex failed"
expwkt = "MULTIPOLYGON(((0 0,1 0,1 1,2 1,2 2,0 2,0 0)),((4 0,5 0,6 2,3 2,3 1,4 1,4 0)))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert polygon.moveVertex( 1, 2, 0 ), "move vertex failed"
expwkt = "MULTIPOLYGON(((1 2,1 0,1 1,2 1,2 2,0 2,1 2)),((4 0,5 0,6 2,3 2,3 1,4 1,4 0)))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert polygon.moveVertex( 2, 1, 7 ), "move vertex failed"
expwkt = "MULTIPOLYGON(((1 2,1 0,1 1,2 1,2 2,0 2,1 2)),((2 1,5 0,6 2,3 2,3 1,4 1,2 1)))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
def testDeleteVertex(self):
# 2-+-+-+-+-3
# | |
# + 6-+-+-7 +
# | | | |
# + + 9-+-8 +
# | | |
# ! 5-+-+-+-4
# |
# 1-+-+-+-+-0
polyline = QgsGeometry.fromWkt( "LINESTRING(5 0,0 0,0 4,5 4,5 1,1 1,1 3,4 3,4 2,2 2)" )
assert polyline.deleteVertex( 3 ), "Delete vertex 5 4 failed"
expwkt = "LINESTRING(5 0, 0 0, 0 4, 5 1, 1 1, 1 3, 4 3, 4 2, 2 2)"
wkt = polyline.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert not polyline.deleteVertex( -5 ), "Delete vertex -5 unexpectedly succeeded"
assert not polyline.deleteVertex( 100 ), "Delete vertex 100 unexpectedly succeeded"
# 2-3 6-+-7
# | | | |
# 0-1 4 5 8-9
polyline = QgsGeometry.fromWkt("MULTILINESTRING((0 0, 1 0, 1 1, 2 1,2 0),(3 0, 3 1, 5 1, 5 0, 6 0))")
assert polyline.deleteVertex(5), "Delete vertex 5 failed"
expwkt = "MULTILINESTRING((0 0, 1 0, 1 1, 2 1, 2 0), (3 1, 5 1, 5 0, 6 0))"
wkt = polyline.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert not polyline.deleteVertex(-100), "Delete vertex -100 unexpectedly succeeded"
assert not polyline.deleteVertex(100), "Delete vertex 100 unexpectedly succeeded"
assert polyline.deleteVertex(0), "Delete vertex 0 failed"
expwkt = "MULTILINESTRING((1 0, 1 1, 2 1, 2 0), (3 1, 5 1, 5 0, 6 0))"
wkt = polyline.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
# 5---4
# | |
# | 2-3
# | |
# 0-1
polygon = QgsGeometry.fromWkt("POLYGON((0 0, 1 0, 1 1, 2 1, 2 2, 0 2, 0 0))")
assert polygon.deleteVertex(2), "Delete vertex 2 failed"
print "FIXME: exportToWkt doesn't put a blank behind the comma"
expwkt = "POLYGON((0 0,1 0,2 1,2 2,0 2,0 0))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert polygon.deleteVertex(0), "Delete vertex 0 failed"
expwkt = "POLYGON((1 0,2 1,2 2,0 2,1 0))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert polygon.deleteVertex(4), "Delete vertex 4 failed"
expwkt = "POLYGON((2 1,2 2,0 2,2 1))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert not polygon.deleteVertex(-100), "Delete vertex -100 unexpectedly succeeded"
assert not polygon.deleteVertex(100), "Delete vertex 100 unexpectedly succeeded"
# 5-+-4 0-+-9
# | | | |
# 6 2-3 1-2 +
# | | | |
# 0-1 7-8
polygon = QgsGeometry.fromWkt( "MULTIPOLYGON(((0 0,1 0,1 1,2 1,2 2,0 2,0 0)),((4 0,5 0,5 2,3 2,3 1,4 1,4 0)))" )
assert polygon.deleteVertex( 9 ), "Delete vertex 5 2 failed"
expwkt = "MULTIPOLYGON(((0 0,1 0,1 1,2 1,2 2,0 2,0 0)),((4 0,5 0,3 2,3 1,4 1,4 0)))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert polygon.deleteVertex( 0 ), "Delete vertex 0 failed"
expwkt = "MULTIPOLYGON(((1 0,1 1,2 1,2 2,0 2,1 0)),((4 0,5 0,3 2,3 1,4 1,4 0)))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert polygon.deleteVertex( 6 ), "Delete vertex 6 failed"
expwkt = "MULTIPOLYGON(((1 0,1 1,2 1,2 2,0 2,1 0)),((5 0,3 2,3 1,4 1,5 0)))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
def testInsertVertex(self):
linestring = QgsGeometry.fromWkt( "LINESTRING(1 0,2 0)" )
if TestQgsGeometry.wkbPtr:
# CHANGE old implementation fails to insert vertex
assert linestring.insertVertex( 0, 0, 0 ), "Insert vertex 0 0 at 0 failed"
expwkt = "LINESTRING(0 0, 1 0, 2 0)"
wkt = linestring.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert linestring.insertVertex( 1.5, 0, 2 if TestQgsGeometry.wkbPtr else 1 ), "Insert vertex 1.5 0 at 2 failed"
expwkt = "LINESTRING(0 0, 1 0, 1.5 0, 2 0)" if TestQgsGeometry.wkbPtr else "LINESTRING(1 0, 1.5 0, 2 0)"
wkt = linestring.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
assert not linestring.insertVertex( 3, 0, 5 ), "Insert vertex 3 0 at 5 should have failed"
polygon = QgsGeometry.fromWkt( "MULTIPOLYGON(((0 0,1 0,1 1,2 1,2 2,0 2,0 0)),((4 0,5 0,5 2,3 2,3 1,4 1,4 0)))" )
assert polygon.insertVertex( 0, 0, 8 ), "Insert vertex 0 0 at 8 failed"
expwkt = "MULTIPOLYGON(((0 0,1 0,1 1,2 1,2 2,0 2,0 0)),((4 0,0 0,5 0,5 2,3 2,3 1,4 1,4 0)))"
wkt = polygon.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
polygon = QgsGeometry.fromWkt( "MULTIPOLYGON(((0 0,1 0,1 1,2 1,2 2,0 2,0 0)),((4 0,5 0,5 2,3 2,3 1,4 1,4 0)))" )
assert polygon.insertVertex( 0, 0, 7 ), "Insert vertex 0 0 at 7 failed"
expwkt = "MULTIPOLYGON(((0 0,1 0,1 1,2 1,2 2,0 2,0 0)),((0 0,4 0,5 0,5 2,3 2,3 1,4 1,0 0)))"
wkt = polygon.exportToWkt()
if TestQgsGeometry.wkbPtr:
# CHANGE old implementation produces: MULTIPOLYGON(((0 0,1 0,1 1,2 1,2 2,0 2,0 0)),())
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
def testTranslate(self):
point = QgsGeometry.fromWkt( "POINT(1 1)" )
assert point.translate( 1, 2 )==0, "Translate failed"
expwkt = "POINT(2 3)"
wkt = point.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
point = QgsGeometry.fromWkt( "MULTIPOINT(1 1,2 2,3 3)" )
assert point.translate( 1, 2 )==0, "Translate failed"
expwkt = "MULTIPOINT(2 3, 3 4, 4 5)"
wkt = point.exportToWkt()
assert compareWkt( expwkt, wkt ), "Expected:\n%s\nGot:\n%s\n" % (expwkt, wkt )
linestring = QgsGeometry.fromWkt( "LINESTRING(1 0,2 0)" )
assert linestring.translate( 1, 2 )==0, "Translate failed"
expwkt = "LINESTRING(2 2, 3 2)"