def testMarkerDataDefinedAngleLine(self):
"""Test issue https://github.com/qgis/QGIS/issues/38716"""
s = QgsLineSymbol()
s.deleteSymbolLayer(0)
marker_line = QgsMarkerLineSymbolLayer(True)
marker_line.setRotateSymbols(True)
marker_line.setPlacement(QgsTemplatedLineSymbolLayerBase.CentralPoint)
marker = QgsSimpleMarkerSymbolLayer(QgsSimpleMarkerSymbolLayer.Arrow,
10)
marker.setAngle(90)
marker.setColor(QColor(255, 0, 0))
marker.setStrokeStyle(Qt.NoPen)
marker_symbol = QgsMarkerSymbol()
marker_symbol.changeSymbolLayer(0, marker)
marker_line.setSubSymbol(marker_symbol)
line_symbol = QgsLineSymbol()
line_symbol.changeSymbolLayer(0, marker_line)
s.appendSymbolLayer(marker_line.clone())
g = QgsGeometry.fromWkt('LineString(0 0, 10 10, 20 20)')
rendered_image = self.renderGeometry(s, g)
assert self.imageCheck('markerline_center_angle_dd',
'markerline_center_angle_dd', rendered_image)
# Now with DD
s = QgsLineSymbol()
s.deleteSymbolLayer(0)
marker_line = QgsMarkerLineSymbolLayer(True)
marker_line.setRotateSymbols(True)
marker_line.setPlacement(QgsTemplatedLineSymbolLayerBase.CentralPoint)
marker = QgsSimpleMarkerSymbolLayer(QgsSimpleMarkerSymbolLayer.Arrow,
10)
# Note: set this to a different value than the reference test (90)
marker.setAngle(30)
marker.setColor(QColor(255, 0, 0))
marker.setStrokeStyle(Qt.NoPen)
marker_symbol = QgsMarkerSymbol()
marker_symbol.changeSymbolLayer(0, marker)
# This is the same value of the reference test
marker_symbol.setDataDefinedAngle(QgsProperty.fromExpression('90'))
marker_line.setSubSymbol(marker_symbol)
line_symbol = QgsLineSymbol()
line_symbol.changeSymbolLayer(0, marker_line)
s.appendSymbolLayer(marker_line.clone())
g = QgsGeometry.fromWkt('LineString(0 0, 10 10, 20 20)')
rendered_image = self.renderGeometry(s, g)
assert self.imageCheck('markerline_center_angle_dd',
'markerline_center_angle_dd', rendered_image)
def testDataDefinedAnglePolygon(self):
# test rendering curve polygon with markers at vertices and curve points
s = QgsFillSymbol()
marker_line = QgsMarkerLineSymbolLayer(True)
marker_line.setPlacement(QgsMarkerLineSymbolLayer.SegmentCenter)
marker = QgsSimpleMarkerSymbolLayer(
QgsSimpleMarkerSymbolLayer.Triangle, 4)
marker.setColor(QColor(255, 0, 0))
marker.setStrokeStyle(Qt.NoPen)
marker.setAngle(90)
marker_symbol = QgsMarkerSymbol()
marker_symbol.changeSymbolLayer(0, marker)
marker_line.setSubSymbol(marker_symbol)
s.appendSymbolLayer(marker_line.clone())
g = QgsGeometry.fromWkt(
'Polygon (LineString (0 5, 5 0, 10 5, 5 10, 0 5))')
self.assertFalse(g.isNull())
# rendering test with non data-defined angle
rendered_image = self.renderGeometry(s, g)
self.assertTrue(
self.imageCheck('markerline_datadefinedanglepolygon',
'markerline_datadefinedanglepolygon',
rendered_image))
s = QgsFillSymbol()
marker_line = QgsMarkerLineSymbolLayer(True)
marker_line.setPlacement(QgsMarkerLineSymbolLayer.SegmentCenter)
marker = QgsSimpleMarkerSymbolLayer(
QgsSimpleMarkerSymbolLayer.Triangle, 4)
marker.setColor(QColor(255, 0, 0))
marker.setStrokeStyle(Qt.NoPen)
marker.setAngle(38)
marker_symbol = QgsMarkerSymbol()
marker_symbol.changeSymbolLayer(0, marker)
marker_symbol.setDataDefinedAngle(QgsProperty.fromExpression('90'))
marker_line.setSubSymbol(marker_symbol)
s.appendSymbolLayer(marker_line.clone())
# rendering test with data-defined angle
rendered_image = self.renderGeometry(s, g)
self.assertTrue(
self.imageCheck('markerline_datadefinedanglepolygon',
'markerline_datadefinedanglepolygon',
rendered_image))
