def writeVectors(writer, legendInterface=None, progress=None): settings = writer.settings baseExtent = settings.baseExtent progress = progress or dummyProgress renderer = QgsMapRenderer() layers = [] if legendInterface is None: for parentId in [ ObjectTreeItem.ITEM_POINT, ObjectTreeItem.ITEM_LINE, ObjectTreeItem.ITEM_POLYGON ]: for layerId, properties in settings.get(parentId, {}).iteritems(): if properties.get("visible", False): layers.append([layerId, properties]) else: # use vector layer order in legendInterface for layer in legendInterface.layers(): if layer.type() != QgsMapLayer.VectorLayer: continue parentId = ObjectTreeItem.parentIdByLayer(layer) properties = settings.get(parentId, {}).get(layer.id(), {}) if properties.get("visible", False): layers.append([layer.id(), properties]) finishedLayers = 0 for layerId, properties in layers: mapLayer = QgsMapLayerRegistry.instance().mapLayer(layerId) if mapLayer is None: continue prop = VectorPropertyReader(writer.objectTypeManager, mapLayer, properties) obj_mod = writer.objectTypeManager.module(prop.mod_index) if obj_mod is None: logMessage("Module not found") continue # prepare triangle mesh geom_type = mapLayer.geometryType() if geom_type == QGis.Polygon and prop.type_index == 1 and prop.isHeightRelativeToDEM( ): # Overlay progress(None, "Initializing triangle mesh for overlay polygons") writer.triangleMesh() progress( 30 + 30 * finishedLayers / len(layers), u"Writing vector layer ({0} of {1}): {2}".format( finishedLayers + 1, len(layers), mapLayer.name())) # write layer object layer = VectorLayer(writer, mapLayer, prop, obj_mod) writer.writeLayer(layer.layerObject(), layer.fieldNames) # initialize symbol rendering mapLayer.rendererV2().startRender( renderer.rendererContext(), mapLayer.pendingFields() if QGis.QGIS_VERSION_INT >= 20300 else mapLayer) # features to export request = QgsFeatureRequest() clipGeom = None if properties.get("radioButton_IntersectingFeatures", False): request.setFilterRect( layer.transform.transformBoundingBox( baseExtent.boundingBox(), QgsCoordinateTransform.ReverseTransform)) if properties.get("checkBox_Clip"): extent = baseExtent.clone().scale( 0.999999 ) # clip with slightly smaller extent than map canvas extent clipGeom = extent.geometry() for feat in layer.features(request, clipGeom): # write geometry obj_mod.write(writer, layer, feat) # writer.writeFeature(layer, feat, obj_mod) # stack attributes in writer if layer.writeAttrs: writer.addAttributes(feat.attributes()) # write attributes if layer.writeAttrs: writer.writeAttributes() # write materials writer.writeMaterials(layer.materialManager) mapLayer.rendererV2().stopRender(renderer.rendererContext()) finishedLayers += 1