def testMapUnitsPerPixel(self):
# test computeMapUnitsPerPixel
ms = QgsMapSettings()
ms.setExtent(QgsRectangle(0, 0, 100, 100))
ms.setOutputSize(QSize(100, 50))
ms.setOutputDpi(75)
r = QgsRenderContext.fromMapSettings(ms)
# renderer scale should be about 1:291937841
# start with no min/max scale
c = QgsMapUnitScale()
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.0, places=5)
# add a minimum scale less than the renderer scale, so should be no change
c.minScale = 350000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.0, places=5)
# minimum scale greater than the renderer scale, so should be limited to minScale
c.minScale = 150000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 1.0276160, places=5)
c.minScale = 50000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 0.3425386, places=5)
c.minScale = 350000000.0
# add a maximum scale greater than the renderer scale, so should be no change
c.maxScale = 150000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.0, places=5)
# maximum scale less than the renderer scale, so should be limited to maxScale
c.maxScale = 350000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.3977706, places=5)
c.maxScale = 500000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 3.4253867, places=5)
# test resetting to min/max
c.minScale = 0
c.maxScale = 0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.0, places=5)
def testMapUnitsPerPixel(self):
# test computeMapUnitsPerPixel
ms = QgsMapSettings()
ms.setExtent(QgsRectangle(0, 0, 100, 100))
ms.setOutputSize(QSize(100, 50))
ms.setOutputDpi(75)
r = QgsRenderContext.fromMapSettings(ms)
# renderer scale should be about 1:291937841
# start with no min/max scale
c = QgsMapUnitScale()
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.0, places=5)
# add a minimum scale less than the renderer scale, so should be no change
c.minScale = 350000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.0, places=5)
# minimum scale greater than the renderer scale, so should be limited to minScale
c.minScale = 150000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 1.0276160, places=5)
c.minScale = 50000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 0.3425386, places=5)
c.minScale = 350000000.0
# add a maximum scale greater than the renderer scale, so should be no change
c.maxScale = 150000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.0, places=5)
# maximum scale less than the renderer scale, so should be limited to maxScale
c.maxScale = 350000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.3977706, places=5)
c.maxScale = 500000000.0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 3.4253867, places=5)
# test resetting to min/max
c.minScale = 0
c.maxScale = 0
mup = c.computeMapUnitsPerPixel(r)
self.assertAlmostEqual(mup, 2.0, places=5)
