Examples of OMGrid

com.bbn.openmap.omGraphics.OMGrid
An OMGrid object is a two-dimensional container object for data. The grid can be laid out in geographic or pixel space. There are two different ways that the OMGrid can be used.
The data placed in the array can represent the attributes of what you want the grid to represent - elevation values, temperatures, etc. In order to render the data on the screen, you'll need to set the OMGridGenerator object, and let it interpret the data to create the desired OMGraphics for you.
The OMGrid data values can also contain integer ID keys for objects contained in the OMGridObjects object held by the OMGrid. By using the OMGrid in this way, the OMGrid becomes a placeholder for other graphics, and will manage the generate() function calls to those objects that are on the screen.
The OMGridGenerator object will take precidence over the OMGridObjects - If the OMGridGenerator is set within the grid, the OMGridGenerator will create the OMGraphics to be displayed for the grid, as opposed the OMGridObjects getting a chance to generate themselves. The OMGrid extends OMGraphicList, and the OMGraphics that the OMGridGenerator creates are added to the OMGrid. If you want the OMGrid to hide the OMGraphics that are created, make it vague.

Examples of com.bbn.openmap.omGraphics.OMGrid

                              LinkProperties propertiesBuffer)
            throws IOException {


        Debug.message("linkdetail", "LinkGrid: reading from link.");


        OMGrid grid = null;
        float lat = 0;
        float lon = 0;
        int x = 0;
        int y = 0;


        int renderType = dis.readByte();


        switch (renderType) {
        case RENDERTYPE_OFFSET:
            lat = dis.readFloat();
            lon = dis.readFloat();
            Debug.message("linkdetail", "LinkGrid: Offset Lat/Lon = " + lat
                    + "/" + lon + " with");
            // Fall through...
        case RENDERTYPE_XY:
            x = dis.readInt();
            y = dis.readInt();
            Debug.message("linkdetail", "LinkGrid: x/y = " + x + "/" + y);
            break;
        case RENDERTYPE_LATLON:
        default:
            lat = dis.readFloat();
            lon = dis.readFloat();
            Debug.message("linkdetail", "LinkGrid: Lat/Lon = " + lat + "/"
                    + lon);
        }


        int rows = dis.readInt();
        int columns = dis.readInt();
        float orientation = dis.readFloat();
        float vResolution = dis.readFloat();
        float hResolution = dis.readFloat();
        int major = dis.readByte();


        int length = dis.readInt();


        Debug.message("linkdetail", "LinkGrid details: rows = "
                + rows
                + ", columns = "
                + columns
                + ", orientation = "
                + orientation
                + ", vertical resolution = "
                + vResolution
                + ", horizontal resolution = "
                + hResolution
                + ", major dimension = "
                + (major == LinkGraphicConstants.COLUMN_MAJOR ? "COLUMN_MAJOR"
                        : "ROW_MAJOR") + ", with number of points = " + length);


        int[][] data;
        if (major == LinkGraphicConstants.COLUMN_MAJOR) {
            data = new int[columns][rows];
        } else {
            data = new int[rows][columns];
        }


        for (int i = 0; i < data.length; i++) {
            for (int j = 0; j < data[0].length; j++) {
                data[i][j] = dis.readInt();
                // Debug.message("linkdetail", "LinkGrid reading " +
                // (rows*i + j) + " " +
                // (major !=
                // LinkGraphicConstants.COLUMN_MAJOR?"column":"row")+
                // " " + j + " = " + Integer.toHexString(data[i][j]) +
                // " (" + data[i][j] + ")");
            }
            // Debug.message("linkdetail", "LinkGrid reading " +
            // (major ==
            // LinkGraphicConstants.COLUMN_MAJOR?"column":"row")+
            // " " + i);
        }


        Debug.message("linkdetail", "LinkGrid read all the data.");


        switch (renderType) {
        case RENDERTYPE_OFFSET:
            grid = new OMGrid(lat, lon, x, y, vResolution, hResolution, data);
            break;
        case RENDERTYPE_XY:
            grid = new OMGrid(x, y, vResolution, hResolution, data);
            break;
        case RENDERTYPE_LATLON:
        default:
            grid = new OMGrid(lat, lon, vResolution, hResolution, data);
        }


        Debug.message("linkdetail", "LinkGrid created OMGrid.");


        if (grid != null) {
            grid.setMajor(major == LinkGraphicConstants.COLUMN_MAJOR ? true
                    : false);
            grid.setOrientation(orientation);
            LinkProperties.loadPropertiesIntoOMGraphic(dis, grid, propertiesBuffer);
        }


        Debug.message("linkdetail", "LinkGrid done.");

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Examples of com.bbn.openmap.omGraphics.OMGrid

    public CacheObject load(String key, double lat, double lon, int level) {
        if (frameCache != null) {


            DTEDFrame frame = frameCache.get(lat, lon, level);
            if (frame != null) {
                OMGrid omgrid = frame.getOMGrid();


                // Need to create a unique generator for each OMGrid.
                omgrid.setGenerator(getGenerator());
                return new DTEDCacheObject(key, omgrid);
            }
        }


        return null;

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Examples of com.bbn.openmap.omGraphics.OMGrid

     * 
     * @param proj EqualArc projection to use to create image.
     * @return raster image to display in OpenMap.
     */
    public OMRaster getOMRaster(EqualArc proj) {
        OMGrid grid = getOMGrid();
        grid.generate(proj);
        SlopeGenerator sg = new SlopeGenerator();
        return sg.generateRasterForProjection(grid, proj);
    }

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