def __polygonPreview(self, distance):
"""
To create the preview (rubberBand) of the duplicate polygon at a certain distance
:param distance: the given distance
"""
self.__rubberBand = QgsRubberBand(self.canvas(), QGis.Line)
polygon_v2, curved = GeometryV2.asPolygonV2(self.__selectedFeature.geometry(), self.__iface)
self.__newFeature = QgsCurvePolygonV2()
line_v2 = self.__newPolygonCurve(polygon_v2.exteriorRing(), distance, curved[0])
self.__newFeature.setExteriorRing(line_v2)
self.__rubberBand.setToGeometry(QgsGeometry(line_v2.curveToLine()), None)
for num in range(polygon_v2.numInteriorRings()):
if self.__dstDlg.isInverted():
distance = -distance
line_v2 = self.__newPolygonCurve(polygon_v2.interiorRing(num), distance, curved[num+1])
self.__newFeature.addInteriorRing(line_v2)
self.__rubberBand.addGeometry(QgsGeometry(line_v2.curveToLine()), None)
def asPolygonV2(geometry, iface):
"""
To get the feature geometry from a polygon as a QgsCurvePolygonV2
:param geometry: the feature geometry
:param iface: interface
:return: the polygon as QgsCurvePolygonV2 , and true if it has curves or false if it hasn't, or none
"""
wktPolygon = geometry.exportToWkt()
curved = []
if wktPolygon.startswith('PolygonZ'):
polygon = wktPolygon.replace('PolygonZ', '')
elif wktPolygon.startswith('Polygon'):
polygon = wktPolygon.replace('Polygon', '')
elif wktPolygon.startswith('CurvePolygonZ'):
polygon = wktPolygon.replace('CurvePolygonZ', '')
elif wktPolygon.startswith('CurvePolygon'):
polygon = wktPolygon.replace('CurvePolygon', '')
else:
iface.messageBar().pushMessage(
QCoreApplication.translate("VDLTools", "This geometry is not yet implemented"),
level=QgsMessageBar.WARNING)
return None
polygon = polygon.strip()[1:-1]
lines = polygon.split('),')
polygonV2 = QgsCurvePolygonV2()
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]
if i == 0:
polygonV2.setExteriorRing(GeometryV2.__createLine(line.split(','), curved[i]))
else:
polygonV2.addInteriorRing(GeometryV2.__createLine(line.split(','), curved[i]))
return polygonV2, curved
def asPolygonV2(geometry):
"""
To get the feature geometry from a polygon as a QgsCurvePolygonV2
(as soon as the geometry().geometry() is crashing)
:param geometry: the feature geometry
:return: the polygon as QgsCurvePolygonV2 , and true if it has curves or false if it hasn't, or none
"""
wktPolygon = geometry.exportToWkt()
curved = []
if wktPolygon.startswith('PolygonZ'):
polygon = wktPolygon.replace('PolygonZ', '')
elif wktPolygon.startswith('Polygon'):
polygon = wktPolygon.replace('Polygon', '')
elif wktPolygon.startswith('CurvePolygonZ'):
polygon = wktPolygon.replace('CurvePolygonZ', '')
elif wktPolygon.startswith('CurvePolygon'):
polygon = wktPolygon.replace('CurvePolygon', '')
else:
print "This geometry is not yet implemented"
return None
polygon = polygon.strip()[1:-1]
lines = polygon.split('),')
polygonV2 = QgsCurvePolygonV2()
for i in xrange(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]
if i == 0:
polygonV2.setExteriorRing(GeometryV2.__createLine(line.split(','), curved[i]))
else:
polygonV2.addInteriorRing(GeometryV2.__createLine(line.split(','), curved[i]))
return polygonV2, curved
def __polygonPreview(self, point):
"""
To create a polygon geometry preview (rubberBand)
:param point: new position as mapPoint
"""
polygon_v2, curved = GeometryV2.asPolygonV2(
self.__selectedFeature.geometry())
vertex = polygon_v2.vertexAt(self.__polygonVertexId(polygon_v2))
dx = vertex.x() - point.x()
dy = vertex.y() - point.y()
self.__newFeature = QgsCurvePolygonV2()
self.__rubberBand = QgsRubberBand(self.__canvas, QGis.Line)
line_v2 = self.__newLine(polygon_v2.exteriorRing(), dx, dy, curved[0])
self.__newFeature.setExteriorRing(line_v2)
self.__rubberBand.setToGeometry(QgsGeometry(line_v2.curveToLine()),
None)
for num in xrange(polygon_v2.numInteriorRings()):
line_v2 = self.__newLine(polygon_v2.interiorRing(num), dx, dy,
curved[num + 1])
self.__newFeature.addInteriorRing(line_v2)
self.__rubberBand.addGeometry(QgsGeometry(line_v2.curveToLine()),
None)