def set_crs(self, s):
"""Figure out the CRS for layer creation, from the selected options and/or string"""
if self.dlg.CRSFromProject.isChecked():
self.crs_source = 'from project'
self.crs = QgsProject.instance().crs()
elif self.dlg.CRSFromFile.isChecked() and s:
self.crs_source = 'from .3d file'
self.crs = QgsCoordinateReferenceSystem()
match = search('epsg:([0-9]*)', s) # check for epsg in proj string
if match: # if found, use the EPSG number explicitly
self.crs.createFromString('EPSG:{}'.format(int(
match.group(1))))
else: # fall back to proj4
self.crs.createFromProj4(s)
else: # fall back to raising a CRS selection dialog
self.crs_source = 'from dialog'
dialog = QgsProjectionSelectionDialog()
dialog.setMessage('define the CRS for the imported layers')
dialog.exec() # run the dialog ..
self.crs = dialog.crs() # .. and recover the user input
if self.crs.isValid():
msg = 'CRS {} : {}'.format(self.crs_source, self.crs.authid())
QgsMessageLog.logMessage(msg, tag='Import .3d', level=Qgis.Info)
QgsMessageLog.logMessage(self.crs.description(),
tag='Import .3d',
level=Qgis.Info)
else: # hopefully never happens
msg = "CRS invalid!"
QgsMessageLog.logMessage(msg, tag='Import .3d', level=Qgis.Info)
self.crs = None
def reprojectCoords(self):
self.refreshCoordsMatrix(self.prev_row)
if self.valueChecker.checkCoordsMatrix(self.coords_matrix):
srcProj = QgsCoordinateReferenceSystem()
srcProj.createFromSrsId(self.featureCrsId)
crsSelectorFrom = QgsProjectionSelectionDialog()
crsSelectorFrom.setCrs(srcProj)
crsSelectorFrom.setMessage(
self.translate_str("Select source coordinates system"))
if crsSelectorFrom.exec():
crsSelectorTo = QgsProjectionSelectionDialog()
crsSelectorTo.setMessage(
self.translate_str(
"Select destination coordinates system"))
if crsSelectorTo.exec():
rc = ReprojectCoordinates(crsSelectorFrom.crs().srsid(),
crsSelectorTo.crs().srsid(),
self.has_Z, self.has_M)
self.coords_matrix = list(
rc.reproject(self.coords_matrix, False))
self.__part_changing = True
self.refreshTable(self.prev_row)
self.__part_changing = False
self.featureCrsId = crsSelectorTo.crs().srsid()
if self.featureCrsId == self.mapCanvas.currentLayer().crs(
).srsid():
self.rb_LayerCrs.setChecked(True)
elif self.featureCrsId == self.projectCrsId:
self.rb_ProjectCrs.setChecked(True)
else:
self.rb_OtherCrs.blockSignals(True)
self.rb_OtherCrs.setChecked(True)
self.rb_OtherCrs.blockSignals(False)
self.__displayAuthid()
