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How to use _calculateBbox method in fMBT

Best Python code snippet using fMBT_python

fmbtandroid.py

Source:fmbtandroid.py

...794        self._rawProps = ""795        if not "scrolling:mScrollX" in self._p:796            self._p["scrolling:mScrollX"] = 0797            self._p["scrolling:mScrollY"] = 0798        fmbtgti.GUIItem.__init__(self, className, self._calculateBbox(displayToScreen), dumpFilename)799    def addChild(self, child): self._children.append(child)800    def _calculateBbox(self, displayToScreen):801        left = int(self._p["layout:mLeft"])802        top = int(self._p["layout:mTop"])803        parent = self._parent804        while parent:805            pp = parent._p806            left += int(pp["layout:mLeft"]) - int(pp["scrolling:mScrollX"])807            top += int(pp["layout:mTop"]) - int(pp["scrolling:mScrollY"])808            parent = parent._parent809        height = int(self._p["layout:getHeight()"])810        width = int(self._p["layout:getWidth()"])811        screenLeft, screenTop = displayToScreen(left, top)812        screenRight, screenBottom = displayToScreen(left + width, top + height)813        return (screenLeft, screenTop, screenRight, screenBottom)814    def children(self):   return self._children...

citymap.py

Source:citymap.py

1import logging2from time import sleep3from math import cos, sin, asin, radians, sqrt4from OSMPythonTools.nominatim import Nominatim5from OSMPythonTools.overpass import overpassQueryBuilder, Overpass6class CityMap:7    def __init__(self, city: str) -> None:8        """Create city map9        Args:10            city (str): City name11            radius (float, optional): City radius, in meters. Defaults to 3000.12        """13        self._city = city14        self._elements_dict = {}15        self._normalized_dict = {}16        self._features_list = []17        # request timing18        self._timeout = 30019        self._try_again = 3020        # initialize instances21        self._nominatim = Nominatim()22        self._overpass = Overpass()23    def __getattr__(self, feature: str) -> list[tuple[float, float]]:24        """Returns a list of features. Too check the available features, try using the features attribute25        Returns:26            list[tuple[float, float]]: list of relative positions27        """28        if feature in self._normalized_dict:29            return self._normalized_dict[feature]30        return []31    @property32    def features(self) -> list[str]:33        """Returns all loaded and normalized features34        Returns:35            list[str]36        """37        return [f for f in self._normalized_dict]38    @property39    def circular_features(self) -> dict[list[tuple[float, float]]]:40        """Returns all features that can must drawn as circles41        Returns:42            dict[list[tuple[float, float]]]43        """44        return {45            k: v46            for k, v in self._normalized_dict.items()47            if any(48                "node" in x["topology"] and x["name"] == k for x in self._features_list49            )50        }51    @property52    def polygonal_features(self) -> dict[list[tuple[float, float]]]:53        """Returns all features that can must drawn as polygons54        Returns:55            dict[list[tuple[float, float]]]56        """57        return {58            k: v59            for k, v in self._normalized_dict.items()60            if any(61                any(y in x["topology"] for y in {"way", "area"}) and x["name"] == k62                for x in self._features_list63            )64        }65    def loadCity(self) -> None:66        """Loads city area id and bounding box (both in xy and coordinates forms)"""67        city_query = self._nominatim.query(68            self._city,69            timeout=self._timeout,70        )71        # city area id72        self._area_id = city_query.areaId()73        # bounding box74        raw_bbox = city_query.toJSON()[0]["boundingbox"]75        self._bbox = (76            float(raw_bbox[0]),77            float(raw_bbox[2]),78            float(raw_bbox[1]),79            float(raw_bbox[3]),80        )81    def _coordsToXY(self, lat: float, lon: float) -> tuple[float, float]:82        """Calculates points x and y coordinates according to its latitude and longitude83        Args:84            lat (float)85            lon (float)86        Returns:87            tuple[float, float]: x, y coordinates88        """89        x = (lat - self._bbox[0]) / (self._bbox[2] - self._bbox[0])90        y = (lon - self._bbox[1]) / (self._bbox[3] - self._bbox[1])91        return x, y92    def _isPositionValid(self, *_) -> bool:93        """Is the provided position valid?94        Let's just say that the position is valid. The actual check is delegated to the subclasses.95        Returns:96            bool:97        """98        return True99    def _queryOSM(self, **kwargs) -> None:100        """Query OSM and load data into self._elements_dict101        Keyword args:102            name (str): Element type.103            tag (str): Element tag.104            topology (str): Element topology.105        """106        if not self._bbox:107            raise ValueError("Bounding Box not loaded.")108        self._elements_dict[kwargs["name"]] = []109        for t in kwargs["tag"]:110            query = overpassQueryBuilder(111                bbox=self._bbox,112                selector=t,113                elementType=kwargs["topology"],114                includeGeometry=True,115            )116            while True:117                try:118                    results = self._overpass.query(119                        query,120                        timeout=self._timeout,121                    )122                    break123                except Exception as _:124                    # OFC they couldn't raise proper exceptions.125                    # this exceptions is a "generic" exception.126                    logging.error(f"Trying again in {self._try_again} seconds...")127                    sleep(self._try_again)128            if not results.elements():129                continue130            if "node" in kwargs["topology"]:131                self._elements_dict[kwargs["name"]].extend(results.nodes())132            elif any(t in ["way", "area"] for t in kwargs["topology"]):133                self._elements_dict[kwargs["name"]].extend(results.ways())134    def _rotateCoordinates(self, coords: list[tuple[float, float]], angle: float = -90):135        """Rotates each coordinates around its center136        Args:137            coords (list[tuple[float, float]]): List of normalized coordinates138            angle (float, optional): Rotation angle. Defaults to -90.139        Returns:140            [type]: [description]141        """142        c = cos(radians(angle))143        s = sin(radians(angle))144        translated = [tuple(s - 0.5 for s in t) for t in coords]145        rotated = [(x * c - y * s, x * s + y * c) for x, y in translated]146        return [tuple(s + 0.5 for s in t) for t in rotated]147    def _normalizeElements(self, **kwargs) -> None:148        """Creates an entry in self._normalized_dict for a set of positions in self._elements_dict.149        The resulting coordinates are a list of (x, y) tuples in range [0, 1]x[0, 1], relative to150        the bounding box of the coordinates themselves.151        Keyword args:152            name (str): Element type.153            tag (str): Element tag.154            topology (str): Element topology.155        """156        if "node" in kwargs["topology"]:157            coords = [158                self._coordsToXY(e.lat(), e.lon())159                for e in self._elements_dict[kwargs["name"]]160                if self._isPositionValid(e.lat(), e.lon())161            ]162            if not coords:163                return164            # rotate coordinates165            rotated = self._rotateCoordinates(coords)166            # add to dictionary167            self._normalized_dict[kwargs["name"]] = rotated168        elif any(t in ["way", "area"] for t in kwargs["topology"]):169            self._normalized_dict[kwargs["name"]] = []170            for element in self._elements_dict[kwargs["name"]]:171                for shape in element.geometry()["coordinates"]:172                    # sometimes shape are just an element173                    if len(shape) == 1:174                        shape = shape[0]175                    # filter coords and convert to xy176                    # sometimes coords are not lists? I don't understand why177                    coords = [178                        self._coordsToXY(*s[::-1])179                        for s in shape180                        if isinstance(s, list) and self._isPositionValid(*s[::-1])181                    ]182                    # sometimes the coords list might be empty183                    if len(coords) < 3:184                        continue185                    # rotate coordinates186                    rotated = self._rotateCoordinates(coords)187                    # add to dictionary188                    self._normalized_dict[kwargs["name"]].append(rotated)189    def loadFeatures(self) -> None:190        """Loads and normalize all features."""191        for feature in self._features_list:192            self._queryOSM(**feature)193            self._normalizeElements(**feature)194class MinimalMap(CityMap):195    def __init__(self, city: str):196        super().__init__(city)197        self._features_list = [198            {199                "name": "benches",200                "tag": ["amenity=bench"],201                "topology": ["node"],202                "color": "#cb99c9",203            },204            {205                "name": "traffic signals",206                "tag": ["traffic_signals"],207                "topology": ["node"],208                "color": "#ff6961",209            },210            {211                "name": "water fountains",212                "tag": ["amenity=drinking_water"],213                "topology": ["node"],214                "color": "#89cff0",215            },216            {217                "name": "trees",218                "tag": ["natural=tree"],219                "topology": ["node"],220                "color": "#77dd77",221            },222            {223                "name": "bars",224                "tag": ["amenity=bar"],225                "topology": ["node"],226                "color": "#ca9bf7",227            },228            {229                "name": "restaurants",230                "tag": ["amenity=restaurant"],231                "topology": ["node"],232                "color": "#ffb7ce",233            },234            {235                "name": "ATMs",236                "tag": ["amenity=atm"],237                "topology": ["node"],238                "color": "#ffee93",239            },240        ]241    def _isPositionValid(self, *_) -> bool:242        """243        All positions are valid in the minimal map. There's no need to check if they are in bbox.244        This is redundant and probably unnecessary, but I wouldn't know how to change this."""245        return True246    def getColor(self, feature: str) -> str:247        """Returns color relative to feature.248        Args:249            feature (str): Feature in class250        Returns:251            str: Feature colorÂ¨252        """253        for f in self._features_list:254            if f["name"] == feature:255                return f.get("color")256        return None257class RoundCityMap(CityMap):258    def __init__(self, city: str, radius: float = 3000):259        """Creates a round city260        Args:261            city (str): Name of the city262            radius (float, optional): City radius. Defaults to 3000.263        """264        super().__init__(city)265        self._radius = radius266        self._features_list = [267            {268                "name": "trees",269                "tag": ["natural=tree"],270                "topology": ["node"],271            },272            {273                "name": "water",274                "tag": [275                    "natural=water",276                    "water",277                    "waterway",278                    "leisure=marinas",279                    "place=sea",280                    "place=ocean",281                ],282                "topology": ["way"],283            },284            {285                "name": "parks",286                "tag": [287                    "leisure=park",288                    "leisure=garden",289                    "leisure=dog_park",290                    "leisure=pitch",291                    "landuse=green",292                    "landuse=grass",293                    "landuse=cemetery",294                ],295                "topology": ["area"],296            },297            {298                "name": "buildings",299                "tag": ["building"],300                "topology": ["way"],301            },302        ]303    def loadCity(self) -> None:304        """Loads city area id and bounding box (both in xy and coordinates forms)"""305        city_query = self._nominatim.query(306            self._city,307            timeout=self._timeout,308        )309        # city area id310        self._area_id = city_query.areaId()311        # city center cords312        self._city_center = tuple(313            float(city_query.toJSON()[0][x]) for x in ["lat", "lon"]314        )315        self._city_center_rad = tuple(radians(x) for x in self._city_center)316        self._calculateBBOX()317    def _calculateBBOX(self) -> None:318        """Calculates city area bounding box according to its center"""319        r_lat = radians(self._city_center[0])320        km_lat, km_lon = 110.574235, 110.572833 * cos(r_lat)321        d_lat = self._radius / 1000 / km_lat322        d_lon = self._radius / 1000 / km_lon323        self._bbox = (324            self._city_center[0] - d_lat,325            self._city_center[1] - d_lon,326            self._city_center[0] + d_lat,327            self._city_center[1] + d_lon,328        )329    def _distFromCityCenter(self, lat: float, lon: float) -> float:330        """Returns distance between a point and the city center coordinates331        Args:332            lat (float)333            lon (float)334        Returns:335            float: distance in meters336        """337        R = 6371338        r_lat, r_lon = radians(lat), radians(lon)339        d_lat, d_lon = (340            r_lat - self._city_center_rad[0],341            r_lon - self._city_center_rad[1],342        )343        a = (344            sin(d_lat / 2) ** 2345            + cos(r_lat) * cos(self._city_center_rad[0]) * sin(d_lon / 2) ** 2346        )347        c = 2 * asin(sqrt(a))348        return R * c * 1000  # meters349    def _isPositionValid(self, lat: float, lon: float) -> bool:350        """Checks whether the given point is indide the circle radius351        Args:352            lat (float): longitude of the point353            lon (float): latitude of the point354        Returns:355            bool356        """...

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