本文整理汇总了Python中qgis.core.QgsSymbolLayerV2Utils.convertToPainterUnits方法的典型用法代码示例。如果您正苦于以下问题:Python QgsSymbolLayerV2Utils.convertToPainterUnits方法的具体用法?Python QgsSymbolLayerV2Utils.convertToPainterUnits怎么用?Python QgsSymbolLayerV2Utils.convertToPainterUnits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.QgsSymbolLayerV2Utils
的用法示例。
在下文中一共展示了QgsSymbolLayerV2Utils.convertToPainterUnits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: testConvertToPainterUnits
# 需要导入模块: from qgis.core import QgsSymbolLayerV2Utils [as 别名]
# 或者: from qgis.core.QgsSymbolLayerV2Utils import convertToPainterUnits [as 别名]
def testConvertToPainterUnits(self):
# test QgsSymbolLayerV2Utils::convertToPainterUnits() 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 = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MapUnit, c)
self.assertAlmostEqual(size, 1.0, places=5)
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MM, c)
self.assertAlmostEqual(size, 23.622047, places=5)
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.Pixel, c)
self.assertAlmostEqual(size, 2.0, places=5)
# minimum size greater than the calculated size, so size should be limited to minSizeMM
c.minSizeMM = 5
c.minSizeMMEnabled = True
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MapUnit, c)
self.assertAlmostEqual(size, 59.0551181, places=5)
# only conversion from mapunits should be affected
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MM, c)
self.assertAlmostEqual(size, 23.622047, places=5)
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.Pixel, c)
self.assertAlmostEqual(size, 2.0, places=5)
c.minSizeMMEnabled = False
# maximum size less than the calculated size, so size should be limited to maxSizeMM
c.maxSizeMM = 0.1
c.maxSizeMMEnabled = True
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MapUnit, c)
self.assertAlmostEqual(size, 1.0, places=5)
# only conversion from mapunits should be affected
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.MM, c)
self.assertAlmostEqual(size, 23.622047, places=5)
size = QgsSymbolLayerV2Utils.convertToPainterUnits(r, 2, QgsSymbolV2.Pixel, c)
self.assertAlmostEqual(size, 2.0, places=5)