Examples of OMRaster

com.bbn.openmap.omGraphics.OMRaster
The OMRaster object lets you create multi-colored images. An image is a two dimensional array of pixel values that correspond to some color values. The pixels are used from the top left, across each row to the right, down to the bottom row.
There are two colormodels that are implemented in OMRaster - the direct colormodel and the indexed colormodel. The direct colormodel is implemented when the pixel values contain the actual java.awt.Color values for the image. The indexed colormodel is implemented when the pixel values are actually indexes into an array of java.awt.Colors. NOTE: The direct colormodel OMRaster is faster to display, because it doesn't need to take the time to resolve the colortable values into pixels.
For direct colormodel images: If you pass in a null pix or a pix with a zero length, the object will create the pixels for you but will not general a renderable version of the object. You will need to call render before generate after the pixels have been set. This feature is for cached rasters, where the content may be changed later. Use this (null pix) if you are building images in a cache, for tiled mapping data or something else where the data is not yet known. The memory for the pixels will be allocated, and then they can be set with image data later when a database is accessed.
For ImageIcon OMRasters: Using an ImageIcon to create an OMRaster gives you the ability to put an image on the screen based on an ImageIcon made from file or URL. The OMRaster uses this ImageIcon as is - there is no opportunity to change any parameters of this image. So set the colors, transparency, etc. before you create the OMRaster.
For indexed colormodel images: If you pass in an empty byte array, a byte array will be created based on the width and height. You will have to resolve empty colortables and set the pixels later. Use this method (null bytes) if you are building images in a cache, for tiled mapping data or something else where the data is not yet known. The memory for the pixels will be allocated, and then they can be set with image data later when a database is accessed. There is the ability to add a filter to the image, to change it's appearance for rendering. The most common filter, which is included as a kind of default, is the scale filter. Filtering the OMRasterObject replaces the bitmap variable, which is the internal java.awt.Image used for rendering. For OMRasters created with pixels, or with the colortable and the colortable index, the original data is left intact, and can be recreated later, or rescaled on the fly, because the internal bitmap will be recreated prior to rescaling. For OMRasters created by ImageIcons or Images, though, you'll need to hold on to the original Image. The internal version is replaced by the filtered version. @see OMRasterObject

Examples of com.bbn.openmap.omGraphics.OMRaster

     * Given a new x/y screen location, reposition the graphic and
     * label.
     */
    public void setGraphicLocations(int x, int y) {
        if (location instanceof OMRaster) {
            OMRaster ras = (OMRaster) location;
            ras.setX(x);
            ras.setY(y);


            label.setX(x);
            label.setY(y);
            setHorizontalLabelBuffer((ras.getWidth() / 2) + SPACING);
        }
    }

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Examples of com.bbn.openmap.omGraphics.OMRaster

     * reposition the graphic and label.
     */
    public void setGraphicLocations(float latitude, float longitude,
                                    int offsetX, int offsetY) {
        if (location instanceof OMRaster) {
            OMRaster ras = (OMRaster) location;
            ras.setLat(latitude);
            ras.setLon(longitude);
            ras.setX(offsetX);
            ras.setY(offsetY);


            label.setLat(latitude);
            label.setLon(longitude);
            label.setX(offsetX);
            label.setY(offsetY);
            setHorizontalLabelBuffer((ras.getWidth() / 2) + SPACING);
        }
    }

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Examples of com.bbn.openmap.omGraphics.OMRaster

     * 
     * @return OMRaster image.
     */
    public OMRaster getNextImage() {


        OMRaster subframe = null;


        // Subframe coordinates and height and width
        // upper left, lower right
        double sf_ullat, sf_ullon, sf_lrlat, sf_lrlon;
        long sf_width = SF_PIXEL_HW;

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Examples of com.bbn.openmap.omGraphics.OMRaster

    public OMRaster getSubframeOMRaster(DTEDFrameSubframeInfo dfsi,
                                        DTEDFrameColorTable colortable) {
        if (!frame_is_valid)
            return null;


        OMRaster raster = null;


        if (dfsi.viewType == DTEDFrameSubframe.NOSHADING)
            return null;


        if (dfsi.viewType == DTEDFrameSubframe.COLOREDSHADING)
            colortable.setGreyScale(false);
        else
            colortable.setGreyScale(true);


        float lat_origin = dfsi.lat;
        float lon_origin = dfsi.lon;


        if (subframes == null) {
            // Need to set a couple of things up if the DTEDFrameCache
            // isn't being used to set up the subframe information in
            // the dfsi.
            initSubframes(1, 1);
            // NOTE!! The algorithm uses the cordinates of the top
            // left corner as a reference!!!!!!!!
            lat_origin = dsi.lat_origin + 1;
            lon_origin = dsi.lon_origin;
        }


        DTEDFrameSubframe subframe = subframes[dfsi.subx][dfsi.suby];


        if (Debug.debugging("dteddetail")) {
            Debug.output("Subframe lat/lon => lat= " + lat_origin + " vs. "
                    + dfsi.lat + " lon= " + lon_origin + " vs. " + dfsi.lon
                    + " subx = " + dfsi.subx + " suby = " + dfsi.suby);
            Debug.output("Height/width of subframe => height= " + dfsi.height
                    + " width= " + dfsi.width);
        }


        if (subframe != null) {


            // The subframe section will not be null, because it is
            // created when the subframe is.
            if (subframe.image != null && subframe.si.equals(dfsi)) {
                // IF there is an image in the cache and the drawing
                // parameters are correct
                raster = subframe.image;


                if (Debug.debugging("dted"))
                    Debug.output("######## DTEDFrame: returning cached subframe");
                return raster;
            }


            if (Debug.debugging("dted")) {
                Debug.output("   *** DTEDFrame: changing image of cached subframe");
            }


            if (subframe.image == null) {
                if (Debug.debugging("dted")) {
                    Debug.output("   +++ DTEDFrame: creating subframe image");
                }
                if (dfsi.colorModel == OMRasterObject.COLORMODEL_DIRECT)
                    subframe.image = new OMRaster(lat_origin, lon_origin, dfsi.width, dfsi.height, new int[dfsi.height
                            * dfsi.width]);
                else
                    subframe.image = new OMRaster(lat_origin, lon_origin, dfsi.width, dfsi.height, null, colortable.colors, 255);
            }


            //  If there is an image, the types are different and it
            // needs to be
            //  redrawn
            subframe.si = dfsi.makeClone();


        } else {


            if (Debug.debugging("dted")) {
                Debug.output("   +++ DTEDFrame: creating subframe");
            }


            subframes[dfsi.subx][dfsi.suby] = new DTEDFrameSubframe(dfsi);
            subframe = subframes[dfsi.subx][dfsi.suby];
            if (dfsi.colorModel == OMRasterObject.COLORMODEL_DIRECT) {
                subframe.image = new OMRaster(lat_origin, lon_origin, dfsi.width, dfsi.height, new int[dfsi.height
                        * dfsi.width]);
            } else {
                subframe.image = new OMRaster(lat_origin, lon_origin, dfsi.width, dfsi.height, null, colortable.colors, 255);
            }
        }


        raster = subframe.image;


        // lat/lon_post_intervals are *10 too big - // extra 0 in
        // 36000 to counteract
        // start in lower left of subframe
        double start_lat_index = (lat_origin - (double) dsi.sw_lat) * 36000.0
                / (double) uhl.lat_post_interval;
        double start_lon_index = (lon_origin - (double) dsi.sw_lon) * 36000.0
                / (double) uhl.lon_post_interval;
        double end_lat_index = ((lat_origin - ((double) dfsi.height * dfsi.yPixInterval)) - (double) dsi.sw_lat)
                * 36000.0 / (double) uhl.lat_post_interval;
        double end_lon_index = ((lon_origin + ((double) dfsi.width * dfsi.xPixInterval)) - (double) dsi.sw_lon)
                * 36000.0 / (double) uhl.lon_post_interval;
        double lat_interval = (start_lat_index - end_lat_index)
                / (double) dfsi.height;
        double lon_interval = (end_lon_index - start_lon_index)
                / (double) dfsi.width;


        if (Debug.debugging("dteddetail"))
            Debug.output("  start_lat_index => " + start_lat_index + "\n"
                    + "  end_lat_index => " + end_lat_index + "\n"
                    + "  start_lon_index => " + start_lon_index + "\n"
                    + "  end_lon_index => " + end_lon_index + "\n"
                    + "  lat_interval => " + lat_interval + "\n"
                    + "  lon_interval => " + lon_interval);


        short e1, e2;
        short xc = 0;
        short yc = 0;
        short xnw = 0;
        short ynw = 0;
        short xse = 0;
        short yse = 0;
        double slope;
        double distance = 1.0;
        float value = 0.0f;
        int assignment = 0;
        double modifier = (double) 0;
        double xw_offset = 0;
        double xe_offset = 0;
        double yn_offset = 0;
        double ys_offset = 0;
        int elevation = (int) 0;


        //  Calculations needed once for slope shading
        if (dfsi.viewType == DTEDFrameSubframe.SLOPESHADING
                || (dfsi.viewType == DTEDFrameSubframe.COLOREDSHADING && colortable.colors.length > DTEDFrameColorTable.NUM_ELEVATION_COLORS)) {
            // to get to the right part of the frame, kind of like a
            // subframe
            // indexing thing
            xw_offset = start_lon_index - Math.ceil(lon_interval);
            xe_offset = start_lon_index + Math.ceil(lon_interval);
            yn_offset = start_lat_index + Math.ceil(lat_interval);
            ys_offset = start_lat_index - Math.ceil(lat_interval);


            switch (dfsi.dtedLevel) {
            //larger numbers make less contrast
            case 0:
                modifier = (double) 4;
                break;//1000 ideal
            case 1:
                modifier = (double) .02;
                break;//2 ideal
            case 2:
                modifier = (double) .0001;
                break;
            case 3:
                modifier = (double) .000001;
                break;
            default:
                modifier = (double) 1;
            }
            // With more colors, contrast tends to be a little light
            // for the
            // default - brighten it up more
            if (colortable.colors.length > 215)
                modifier = modifier / 10;


            for (int h = dfsi.slopeAdjust; h < 5; h++)
                modifier = modifier * 10;
            distance = Math.sqrt((modifier * lon_interval * lon_interval)
                    + (modifier * lat_interval * lat_interval));
        }
        for (short x = 0; x < dfsi.width; x++) {


            //used for both elevation banding and slope
            xc = (short) (start_lon_index + ((x) * lon_interval));
            if (xc < 0)
                xc = 0;
            if (xc > dsi.num_lon_points - 1)
                xc = (short) (dsi.num_lon_points - 1);


            if ((elevations[xc] == null) && !read_data_record(xc)) {
                Debug.error("DTEDFrame: Problem reading lat point line in data record");
                return null;
            }
            if (dfsi.viewType == DTEDFrameSubframe.SLOPESHADING
                    || (dfsi.viewType == DTEDFrameSubframe.COLOREDSHADING && colortable.colors.length > DTEDFrameColorTable.NUM_ELEVATION_COLORS)) {
                //  This is actually finding the right x post for this
                // pixel,
                //  within the subframe measurements.
                xnw = (short) (xw_offset + Math.floor(x * lon_interval));
                xse = (short) (xe_offset + Math.floor(x * lon_interval));


                // trying to smooth out the edge of the frame
                if (xc == 0 || xnw < 0) {
                    xnw = xc;
                    xse = (short) (xnw + 2.0 * Math.ceil(lon_interval));
                }
                if (xc == dsi.num_lon_points - 1
                        || xse > dsi.num_lon_points - 1) {
                    xse = (short) (dsi.num_lon_points - 1);
                    xnw = (short) (xse - 2.0 * Math.ceil(lon_interval));
                }


                if (((elevations[xnw] == null) && !read_data_record(xnw))
                        || ((elevations[xse] == null) && !read_data_record(xse))) {
                    Debug.error("DTEDFrame: Problem reading lat point line in data record");
                    return null;
                }
            }


            // Now, calculate the data and assign the pixels based on
            // y
            for (short y = 0; y < dfsi.height; y++) {


                // used for elevation band and slope
                yc = (short) (start_lat_index - ((y) * lat_interval));
                if (yc < 0)
                    yc = 0;
                elevation = (int) elevations[xc][yc];


                // elevation shading
                if (dfsi.viewType == DTEDFrameSubframe.METERSHADING
                        || dfsi.viewType == DTEDFrameSubframe.FEETSHADING) {


                    // Just use the top two-thirds of the colors
                    if (elevation == 0)
                        assignment = 0; // color water Blue
                    else {
                        if (elevation < 0)
                            elevation *= -1; // Death Valley
                        if (dfsi.viewType == DTEDFrameSubframe.FEETSHADING)
                            elevation = (int) (elevation * 3.2);
                        // Start at the darkest color, and then go up
                        // through the
                        // colormap for each band height, the start
                        // back at the
                        // darkest when you get to the last color. To
                        // make this
                        // more useful, I limit the number of colors
                        // (10) used - if
                        // there isn;t enough contrast between the
                        // colors, you can't
                        // see the bands. The contrast adjustment in
                        // 24-bit color
                        // mode(216 colors) lets you add a few colors.
                        if (colortable.colors.length < 216) {
                            try {
                                assignment = (int) ((elevation / dfsi.bandHeight)
                                        % (colortable.colors.length - 6) + 6);
                            } catch (java.lang.ArithmeticException ae) {
                                assignment = 1;
                            }
                        } else {
                            try {
                                assignment = (int) (((elevation / dfsi.bandHeight)
                                        % (10 - 2 * (3 - dfsi.slopeAdjust)) * (colortable.colors.length / (10 - 2 * (3 - dfsi.slopeAdjust)))) + 6);
                            } catch (java.lang.ArithmeticException ae) {
                                assignment = 1;
                            }
                        }
                    }
                    if (dfsi.colorModel == OMRasterObject.COLORMODEL_DIRECT)
                        raster.setPixel(x,
                                y,
                                colortable.colors[assignment].getRGB());
                    else
                        raster.setByte(x, y, (byte) assignment);
                }


                // Slope shading
                else if (dfsi.viewType == DTEDFrameSubframe.SLOPESHADING
                        || (dfsi.viewType == DTEDFrameSubframe.COLOREDSHADING && colortable.colors.length > DTEDFrameColorTable.NUM_ELEVATION_COLORS)) {


                    // find the y post indexes within the subframe
                    ynw = (short) (yn_offset - Math.floor(y * lat_interval));
                    yse = (short) (ys_offset - Math.floor(y * lat_interval));


                    //  trying to smooth out the edge of the frame by
                    // handling the
                    //  frame limits
                    if (yse < 0)
                        yse = 0;
                    if (yc == dsi.num_lat_lines - 1
                            || ynw > dsi.num_lat_lines - 1)
                        ynw = (short) (dsi.num_lat_lines - 1);


                    e2 = elevations[xse][yse]; // down & right
                                               // elevation
                    e1 = elevations[xnw][ynw]; // up and left
                                               // elevation


                    slope = (e2 - e1) / distance; // slope relative to
                                                  // nw sun
                    // colormap value darker for negative slopes,
                    // brighter for
                    // positive slopes


                    if (dfsi.viewType == DTEDFrameSubframe.COLOREDSHADING) {
                        assignment = 1;
                        elevation = (int) (elevation * 3.2);// feet
                        for (int l = 1; l < DTEDFrameColorTable.NUM_ELEVATION_COLORS; l++)
                            if (elevation <= colortable.elevation_color_cutoff[l]) {
                                if (slope < 0)
                                    assignment = (int) (l + DTEDFrameColorTable.NUM_ELEVATION_COLORS);
                                else if (slope > 0)
                                    assignment = (int) (l + (DTEDFrameColorTable.NUM_ELEVATION_COLORS * 2));
                                else
                                    assignment = (int) l;
                                break;
                            }
                        if (elevation == 0)
                            assignment = 0;
                        if (dfsi.colorModel == OMRasterObject.COLORMODEL_DIRECT)
                            raster.setPixel(x,
                                    y,
                                    colortable.colors[assignment].getRGB());
                        else
                            raster.setByte(x, y, (byte) assignment);
                    }


                    else {
                        value = (float) (((colortable.colors.length - 1) / 2) + slope);


                        // not water, but close in the colormap - max
                        // dark
                        if (slope != 0 && value < 1)
                            value = 1;
                        if (elevation == 0)
                            value = 0; // water?!?
                        if (value > (colortable.colors.length - 1))
                            value = colortable.colors.length - 1; // max
                                                                  // bright


                        assignment = (int) value;
                        if (dfsi.colorModel == OMRasterObject.COLORMODEL_DIRECT)
                            raster.setPixel(x,
                                    y,
                                    colortable.colors[assignment].getRGB());
                        else
                            raster.setByte(x, y, (byte) assignment);


                    }
                }
                // Subframe outlines - different colors for each side
                // of the frame
                // This is really for debugging purposes, really.
                else if (dfsi.viewType == DTEDFrameSubframe.BOUNDARYSHADING) {
                    int c;
                    if (x < 1)
                        c = 1;
                    else if (x > dfsi.width - 2)
                        c = 12;
                    else if (y < 1)
                        c = 1;
                    else if (y > dfsi.height - 2)
                        c = 12;
                    else
                        c = 7;


                    if (dfsi.colorModel == OMRasterObject.COLORMODEL_DIRECT)
                        raster.setPixel(x, y, colortable.colors[c].getRGB());
                    else
                        raster.setByte(x, y, (byte) c);


                } else if (dfsi.viewType == DTEDFrameSubframe.COLOREDSHADING) {
                    assignment = 1;
                    elevation = (int) (elevation * 3.2);// feet
                    for (int l = 1; l < DTEDFrameColorTable.NUM_ELEVATION_COLORS; l++)
                        if (elevation <= colortable.elevation_color_cutoff[l]) {
                            assignment = (int) l;
                            break;
                        }


                    if (elevation == 0)
                        assignment = 0;
                    if (elevation < 0)
                        assignment = 1;
                    if (elevation > 33000)
                        assignment = 1;


                    if (dfsi.colorModel == OMRasterObject.COLORMODEL_DIRECT)
                        raster.setPixel(x,
                                y,
                                colortable.colors[assignment].getRGB());
                    else
                        raster.setByte(x, y, (byte) assignment);
                }
            }
        }


        if (Debug.debugging("dteddetail"))

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