本文整理汇总了Python中qgis.core.QgsVectorSimplifyMethod.setSimplifyHints方法的典型用法代码示例。如果您正苦于以下问题：Python QgsVectorSimplifyMethod.setSimplifyHints方法的具体用法？Python QgsVectorSimplifyMethod.setSimplifyHints怎么用？Python QgsVectorSimplifyMethod.setSimplifyHints使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类qgis.core.QgsVectorSimplifyMethod的用法示例。
在下文中一共展示了QgsVectorSimplifyMethod.setSimplifyHints方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: TestQgsBlendModes
# 需要导入模块: from qgis.core import QgsVectorSimplifyMethod [as 别名]
# 或者: from qgis.core.QgsVectorSimplifyMethod import setSimplifyHints [as 别名]
class TestQgsBlendModes(TestCase):
def __init__(self, methodName):
"""Run once on class initialisation."""
unittest.TestCase.__init__(self, methodName)
# initialize class MapRegistry, Canvas, MapRenderer, Map and PAL
self.mMapRegistry = QgsMapLayerRegistry.instance()
# create point layer
myShpFile = os.path.join(TEST_DATA_DIR, 'points.shp')
self.mPointLayer = QgsVectorLayer(myShpFile, 'Points', 'ogr')
self.mMapRegistry.addMapLayer(self.mPointLayer)
self.mSimplifyMethod = QgsVectorSimplifyMethod() ;
self.mSimplifyMethod.setSimplifyHints(QgsVectorSimplifyMethod.NoSimplification);
# create polygon layer
myShpFile = os.path.join(TEST_DATA_DIR, 'polys.shp')
self.mPolygonLayer = QgsVectorLayer(myShpFile, 'Polygons', 'ogr')
self.mPolygonLayer.setSimplifyMethod(self.mSimplifyMethod)
self.mMapRegistry.addMapLayer(self.mPolygonLayer)
# create line layer
myShpFile = os.path.join(TEST_DATA_DIR, 'lines.shp')
self.mLineLayer = QgsVectorLayer(myShpFile, 'Lines', 'ogr')
self.mLineLayer.setSimplifyMethod(self.mSimplifyMethod)
self.mMapRegistry.addMapLayer(self.mLineLayer)
# create two raster layers
myRasterFile = os.path.join(TEST_DATA_DIR, 'landsat.tif')
self.mRasterLayer1 = QgsRasterLayer(myRasterFile, "raster1")
self.mRasterLayer2 = QgsRasterLayer(myRasterFile, "raster2")
myMultiBandRenderer1 = QgsMultiBandColorRenderer(self.mRasterLayer1.dataProvider(), 2, 3, 4)
self.mRasterLayer1.setRenderer(myMultiBandRenderer1)
self.mMapRegistry.addMapLayer(self.mRasterLayer1)
myMultiBandRenderer2 = QgsMultiBandColorRenderer(self.mRasterLayer2.dataProvider(), 2, 3, 4)
self.mRasterLayer2.setRenderer(myMultiBandRenderer2)
self.mMapRegistry.addMapLayer(self.mRasterLayer2)
# to match blend modes test comparisons background
self.mCanvas = CANVAS
self.mCanvas.setCanvasColor(QColor(152, 219, 249))
self.mMap = self.mCanvas.map()
self.mMap.resize(QSize(400, 400))
self.mapSettings = self.mCanvas.mapSettings()
self.mapSettings.setOutputSize(QSize(400, 400))
def testVectorBlending(self):
"""Test that blend modes work for vector layers."""
#Add vector layers to map
myLayers = []
myLayers.append(self.mLineLayer.id())
myLayers.append(self.mPolygonLayer.id())
self.mapSettings.setLayers(myLayers)
self.mapSettings.setExtent(self.mPointLayer.extent())
#Set blending modes for both layers
self.mLineLayer.setBlendMode(QPainter.CompositionMode_Difference)
self.mPolygonLayer.setBlendMode(QPainter.CompositionMode_Difference)
checker = QgsRenderChecker()
checker.setControlName("expected_vector_blendmodes")
checker.setMapSettings(self.mapSettings)
myResult = checker.runTest("vector_blendmodes");
myMessage = ('vector blending failed')
assert myResult, myMessage
#Reset layers
self.mLineLayer.setBlendMode(QPainter.CompositionMode_SourceOver)
self.mPolygonLayer.setBlendMode(QPainter.CompositionMode_SourceOver)
def testVectorFeatureBlending(self):
"""Test that feature blend modes work for vector layers."""
#Add vector layers to map
myLayers = []
myLayers.append(self.mLineLayer.id())
myLayers.append(self.mPolygonLayer.id())
self.mapSettings.setLayers(myLayers)
self.mapSettings.setExtent(self.mPointLayer.extent())
#Set feature blending for line layer
self.mLineLayer.setFeatureBlendMode(QPainter.CompositionMode_Plus)
checker = QgsRenderChecker()
checker.setControlName("expected_vector_featureblendmodes")
checker.setMapSettings(self.mapSettings)
myResult = checker.runTest("vector_featureblendmodes");
myMessage = ('vector feature blending failed')
assert myResult, myMessage
#Reset layers
self.mLineLayer.setFeatureBlendMode(QPainter.CompositionMode_SourceOver)
def testVectorLayerTransparency(self):
"""Test that layer transparency works for vector layers."""
#.........这里部分代码省略.........