Examples of com.volantis.mcs.googlemaps.GImage

com.volantis.mcs.googlemaps.GImage

Class taht holds image coordinates. Image coordinates points image from wolrd map stored on server and are used to retrieve it. Each image has three importand coordinates: x,y - points image zoom - points zoom level for which image should be retrieved, this is non-intuitive but the lower zoom the more details are on map and separate images. zoom = 0 is the most detailed map. zoom = 17 is whole world in one image. x,y are dependant on zoom because for some levels there are no images under certain coordinates. This is calculated in GoogleCalculator and not described here. Rough approximation could be: x,y = 2^(17-zoom) where zom belongs to [0,17] Moreover it is not documetned by google as not part of public API, so can be changed without noticing us about that fact. As google maps quality improvement functionality each google original image was splitted into 9 parts (3x3) but it doesn't affect GImage implementation because it still operate on the same coordinates.


            GoogleCalculator calc = GoogleCalculatorExtended.getInstance();
            GLatLng gLatLng = new GLatLng(latitude, longitude);
            GPoint gPoint = calc.fromLatLngToPixel(gLatLng,
                    GoogleCalculator.INITIAL_ZOOM);
            GImage gImage = calc.fromGPixelToGImage(gPoint);
            initialLocation.append(", longitude: ").append(longitude)
                    .append(", latitude: ").append(latitude)
                    .append(", initialLocation: ")
                    .append(OperationHelper.getInstance()
                    .getMapImagesList(gImage.getImgX(), gImage.getImgY(),
                            GoogleCalculator.INITIAL_ZOOM,
                            GoogleCalculator.MAIN_IMAGES));
        }
        return initialLocation;
    }

        int minZoom = attr.getMinZoom();
        int maxZoom = attr.getMaxZoom();
        
        GoogleCalculator calc = GoogleCalculatorExtended.getInstance();
        GPoint gPoint = calc.fromLatLngToPixel(new GLatLng(lat, lng), 0);
        GImage gImage = calc.fromGPixelToGImage(gPoint);
        
        StringBuffer textBuffer = new StringBuffer();
        
        textBuffer.append(
                createJavaScriptWidgetRegistrationOpening(
                        attr.getId()))
                .append("new Widget.MapLocationMarker(")
                .append(createJavaScriptString(attr.getId()))
                .append(", {")
                .append("lng: ").append(gImage.getImgX()).append(", ")
                .append("lat: ").append(gImage.getImgY()).append(", ")
                .append("src: ").append(createJavaScriptString(src)).append(", ")
                .append("minZoom: ").append(minZoom).append(", ")
                .append("maxZoom: ").append(maxZoom)
                .append("})")
                .append(createJavaScriptWidgetRegistrationClosure());

Examples of com.volantis.mcs.googlemaps.GImage

Related Classes of com.volantis.mcs.googlemaps.GImage