本文整理汇总了Python中qgis.core.QgsSymbolLayerUtils.convertToMapUnits方法的典型用法代码示例。如果您正苦于以下问题：Python QgsSymbolLayerUtils.convertToMapUnits方法的具体用法？Python QgsSymbolLayerUtils.convertToMapUnits怎么用？Python QgsSymbolLayerUtils.convertToMapUnits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.QgsSymbolLayerUtils的用法示例。
在下文中一共展示了QgsSymbolLayerUtils.convertToMapUnits方法的2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: testConvertToMapUnits
# 需要导入模块: from qgis.core import QgsSymbolLayerUtils [as 别名]
# 或者: from qgis.core.QgsSymbolLayerUtils import convertToMapUnits [as 别名]
def testConvertToMapUnits(self):
# test QgsSymbolLayerUtils::convertToMapUnits() without QgsMapUnitScale
ms = QgsMapSettings()
ms.setExtent(QgsRectangle(0, 0, 100, 100))
ms.setOutputSize(QSize(100, 50))
ms.setOutputDpi(300)
r = QgsRenderContext.fromMapSettings(ms)
# renderer scale should be about 1:291937841
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMapUnits)
self.assertEqual(size, 2.0)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMillimeters)
self.assertAlmostEqual(size, 47.244094, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 5.66929, QgsUnitTypes.RenderPoints)
self.assertAlmostEqual(size, 47.2440833, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderPixels)
self.assertAlmostEqual(size, 4.0, places=5)示例2: testConvertToMapUnits
# 需要导入模块: from qgis.core import QgsSymbolLayerUtils [as 别名]
# 或者: from qgis.core.QgsSymbolLayerUtils import convertToMapUnits [as 别名]
def testConvertToMapUnits(self):
# test QgsSymbolLayerUtils::convertToMapUnits() using QgsMapUnitScale
ms = QgsMapSettings()
ms.setExtent(QgsRectangle(0, 0, 100, 100))
ms.setOutputSize(QSize(100, 50))
ms.setOutputDpi(300)
r = QgsRenderContext.fromMapSettings(ms)
# renderer scale should be about 1:291937841
# start with no min/max scale
c = QgsMapUnitScale()
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMapUnits, c)
self.assertEqual(size, 2.0)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMillimeters, c)
self.assertAlmostEqual(size, 47.244094, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 5.66929, QgsUnitTypes.RenderPoints, c)
self.assertAlmostEqual(size, 47.2440833, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderPixels, c)
self.assertAlmostEqual(size, 4.0, places=5)
# minimum size greater than the calculated size, so size should be limited to minSizeMM
c.minSizeMM = 5
c.minSizeMMEnabled = True
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMapUnits, c)
self.assertAlmostEqual(size, 118.1102362, places=5)
# only conversion from mapunits should be affected
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMillimeters, c)
self.assertAlmostEqual(size, 47.244094, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 5.66929, QgsUnitTypes.RenderPoints, c)
self.assertAlmostEqual(size, 47.2440833, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderPixels, c)
self.assertAlmostEqual(size, 4.0, places=5)
c.minSizeMMEnabled = False
# maximum size less than the calculated size, so size should be limited to maxSizeMM
c.maxSizeMM = 0.05
c.maxSizeMMEnabled = True
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMapUnits, c)
self.assertAlmostEqual(size, 1.1811023622047245, places=5)
# only conversion from mapunits should be affected
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMillimeters, c)
self.assertAlmostEqual(size, 47.244094, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 5.66929, QgsUnitTypes.RenderPoints, c)
self.assertAlmostEqual(size, 47.2440833, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderPixels, c)
self.assertAlmostEqual(size, 4.0, places=5)
c.maxSizeMMEnabled = False
# test with minimum scale set
c.minScale = 1 / 150000000.0
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMapUnits, c)
self.assertAlmostEqual(size, 15.57001821, places=5)
# only conversion from mapunits should be affected
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMillimeters, c)
self.assertAlmostEqual(size, 47.244094, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 5.66929, QgsUnitTypes.RenderPoints, c)
self.assertAlmostEqual(size, 47.2440833, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderPixels, c)
self.assertAlmostEqual(size, 4.0, places=5)
c.minScale = 0
# test with maximum scale set
c.maxScale = 1 / 1550000000.0
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMapUnits, c)
self.assertAlmostEqual(size, 1.50677595625, places=5)
# only conversion from mapunits should be affected
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderMillimeters, c)
self.assertAlmostEqual(size, 47.244094, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 5.66929, QgsUnitTypes.RenderPoints, c)
self.assertAlmostEqual(size, 47.2440833, places=5)
size = QgsSymbolLayerUtils.convertToMapUnits(r, 2, QgsUnitTypes.RenderPixels, c)
self.assertAlmostEqual(size, 4.0, places=5)
c.maxScale = 0