def set_project_aoi(self, draft_project_dto: DraftProjectDTO):
""" Sets the AOI for the supplied project """
aoi_geojson = geojson.loads(json.dumps(draft_project_dto.area_of_interest))
aoi_geometry = GridService.merge_to_multi_polygon(aoi_geojson, dissolve=True)
valid_geojson = geojson.dumps(aoi_geometry)
self.geometry = ST_SetSRID(ST_GeomFromGeoJSON(valid_geojson), 4326)
self.centroid = ST_Centroid(self.geometry)
def from_dict(cls, area_poly: dict):
""" Create a new Priority Area from dictionary """
pa_geojson = geojson.loads(json.dumps(area_poly))
if type(pa_geojson) is not geojson.Polygon:
raise InvalidGeoJson("Priority Areas must be supplied as Polygons")
is_valid_geojson = geojson.is_valid(pa_geojson)
if is_valid_geojson["valid"] == "no":
raise InvalidGeoJson(
f"Priority Area: Invalid Polygon - {is_valid_geojson['message']}"
)
pa = cls()
valid_geojson = geojson.dumps(pa_geojson)
pa.geometry = ST_SetSRID(ST_GeomFromGeoJSON(valid_geojson), 4326)
return pa
def from_geojson_feature(cls, task_id, task_feature):
"""
Constructs and validates a task from a GeoJson feature object
:param task_id: Unique ID for the task
:param task_feature: A geoJSON feature object
:raises InvalidGeoJson, InvalidData
"""
if type(task_feature) is not geojson.Feature:
raise InvalidGeoJson("Task: Invalid GeoJson should be a feature")
task_geometry = task_feature.geometry
if type(task_geometry) is not geojson.MultiPolygon:
raise InvalidGeoJson("Task: Geometry must be a MultiPolygon")
is_valid_geojson = geojson.is_valid(task_geometry)
if is_valid_geojson["valid"] == "no":
raise InvalidGeoJson(
f"Task: Invalid MultiPolygon - {is_valid_geojson['message']}"
)
task = cls()
try:
task.x = task_feature.properties["x"]
task.y = task_feature.properties["y"]
task.zoom = task_feature.properties["zoom"]
task.is_square = task_feature.properties["isSquare"]
except KeyError as e:
raise InvalidData(f"Task: Expected property not found: {str(e)}")
if "extra_properties" in task_feature.properties:
task.extra_properties = json.dumps(
task_feature.properties["extra_properties"]
)
task.id = task_id
task_geojson = geojson.dumps(task_geometry)
task.geometry = ST_SetSRID(ST_GeomFromGeoJSON(task_geojson), 4326)
return task