def __linePreview(self, point):
"""
To create a line geometry preview (rubberBand)
:param point: new position as mapPoint
"""
line_v2, curved = GeometryV2.asLineV2(
self.__selectedFeature.geometry(), self.__iface)
vertex = QgsPointV2()
line_v2.pointAt(self.__selectedVertex, vertex)
self.__rubberBand = QgsRubberBand(self.canvas(), QGis.Line)
dx = vertex.x() - point.x()
dy = vertex.y() - point.y()
if isinstance(curved, (list, tuple)):
self.__newFeature = QgsCompoundCurveV2()
for pos in range(line_v2.nCurves()):
curve_v2 = self.__newCurve(curved[pos], line_v2.curveAt(pos),
dx, dy)
self.__newFeature.addCurve(curve_v2)
if pos == 0:
self.__rubberBand.setToGeometry(
QgsGeometry(curve_v2.curveToLine()), None)
else:
self.__rubberBand.addGeometry(
QgsGeometry(curve_v2.curveToLine()), None)
else:
self.__newFeature = self.__newCurve(curved, line_v2, dx, dy)
self.__rubberBand.setToGeometry(
QgsGeometry(self.__newFeature.curveToLine()), None)
def __linePreview(self, distance):
"""
To create the preview (rubberBand) of the duplicate line at a certain distance
:param distance: the given distance
"""
self.__rubberBand = QgsRubberBand(self.canvas(), QGis.Line)
line_v2, curved = GeometryV2.asLineV2(
self.__selectedFeature.geometry(), self.__iface)
if isinstance(curved, (list, tuple)):
self.__newFeature = QgsCompoundCurveV2()
for pos in range(line_v2.nCurves()):
if curved[pos]:
curve_v2 = self.__newArc(line_v2.curveAt(pos), distance)
else:
curve_v2 = self.__newLine(line_v2.curveAt(pos), distance)
self.__newFeature.addCurve(curve_v2)
if pos == 0:
self.__rubberBand.setToGeometry(
QgsGeometry(curve_v2.curveToLine()), None)
else:
self.__rubberBand.addGeometry(
QgsGeometry(curve_v2.curveToLine()), None)
else:
if curved:
self.__newFeature = self.__newArc(line_v2, distance)
else:
self.__newFeature = self.__newLine(line_v2, distance)
self.__rubberBand.setToGeometry(
QgsGeometry(self.__newFeature.curveToLine()), None)
def asLineV2(geometry, iface):
"""
To get the feature geometry from a line as a QgsLineStringV2/QgsCircularStringV2
(as soon as the geometry().geometry() is crashing)
:param geometry: the feature geometry
:param iface: interface
:return: the line as QgsLineStringV2/QgsCircularStringV2 , and true if it has curves or false if it hasn't,
or none
"""
wktLine = geometry.exportToWkt()
curved = False
if wktLine.startswith('LineStringZ'):
line = wktLine.replace('LineStringZ', '')
elif wktLine.startswith('LineString'):
line = wktLine.replace('LineString', '')
elif wktLine.startswith('CircularStringZ'):
curved = True
line = wktLine.replace('CircularStringZ', '')
elif wktLine.startswith('CircularString'):
curved = True
line = wktLine.replace('CircularString', '')
else:
if wktLine.startswith('CompoundCurveZ'):
compound = wktLine.replace('CompoundCurveZ', '')
elif wktLine.startswith('CompoundCurve'):
compound = wktLine.replace('CompoundCurve', '')
else:
iface.messageBar().pushMessage(
QCoreApplication.translate("VDLTools", "This geometry is not yet implemented"),
level=QgsMessageBar.WARNING)
return None
compound = compound.strip()[1:-1]
lines = compound.split('),')
compoundV2 = QgsCompoundCurveV2()
curved = []
for i in range(0, len(lines)):
line = lines[i]
if line.startswith('CircularStringZ'):
curved.append(True)
line = line.replace('CircularStringZ', '')
elif line.startswith('CircularString'):
curved.append(True)
line = line.replace('CircularString', '')
else:
curved.append(False)
line = line.strip()[1:-1]
compoundV2.addCurve(GeometryV2.__createLine(line.split(','), curved[i]))
return compoundV2, curved
line = line.strip()[1:-1]
points = line.split(',')
return GeometryV2.__createLine(points, curved), curved