Examples with Zoom uk.me.parabola.imgfmt.app.trergn.Zoom used on opensource projects

Example 1 with Zoom

use of uk.me.parabola.imgfmt.app.trergn.Zoom in project mkgmap by openstreetmap.

the class AbstractTestMap method makeMap.

protected void makeMap(String[] args) {
    // Default to nowhere in particular.
    double lat = 51.724;
    double lng = 0.2487;
    // Arguments allow you to place the map where ever you wish.
    if (args.length > 1) {
        lat = Double.valueOf(args[0]);
        lng = Double.valueOf(args[1]);
    }
    log.debug("this is a test make map program. Start", lat, '/', lng);
    FileSystemParam params = new FileSystemParam();
    params.setBlockSize(512);
    params.setMapDescription("OSM street map");
    Map map;
    try {
        map = Map.createMap("32860003", ".", params, "32860003", SrtTextReader.sortForCodepage(1252));
    } catch (FileExistsException e) {
        throw new ExitException("File exists already", e);
    } catch (FileNotWritableException e) {
        throw new ExitException("Could not create or write file", e);
    }
    map.addInfo("Program released under the GPL");
    map.addInfo("This map data is made available under the Open Database License:");
    // There has to be (at least) two copyright messages or else the map
    // does not show up.  The second one will be displayed at startup,
    // although the conditions where that happens are not known.
    map.addCopyright("program licenced under GPL v2");
    // This one gets shown when you switch on, so put the actual
    // map copyright here.  This is made up data, so no copyright applies.
    map.addCopyright("No copyright");
    Area area = new Area(lat, lng, lat + 1, lng + 1);
    map.setBounds(area);
    // There must always be an empty zoom level at the least detailed level.
    log.info("area " + area);
    log.info(" or " + lat + '/' + lng);
    Zoom z1 = map.createZoom(1, 24);
    Subdivision topdiv = map.topLevelSubdivision(area, z1);
    // Create a most detailed view
    Zoom z = map.createZoom(0, 24);
    Subdivision div = map.createSubdivision(topdiv, area, z);
    div.startDivision();
    drawTestMap(map, div, lat, lng);
    map.close();
}

Example 2 with Zoom

use of uk.me.parabola.imgfmt.app.trergn.Zoom in project mkgmap by openstreetmap.

the class OverviewBuilder method readPoints.

/**
 * Read the points from the .img file and add them to the overview map.
 * We read from the least detailed level (apart from the empty one).
 *
 * @param mapReader Map reader on the detailed .img file.
 */
private void readPoints(MapReader mapReader) {
    Area bounds = overviewSource.getBounds();
    Zoom[] levels = mapReader.getLevels();
    for (int l = 1; l < levels.length; l++) {
        int min = levels[l].getLevel();
        int res = levels[l].getResolution();
        List<Point> pointList = mapReader.pointsForLevel(min, MapReader.WITH_EXT_TYPE_DATA);
        for (Point point : pointList) {
            if (log.isDebugEnabled())
                log.debug("got point", point);
            if (bounds.contains(point.getLocation()) == false) {
                if (log.isDebugEnabled())
                    log.debug(point, "dropped, is outside of tile boundary");
                continue;
            }
            MapPoint mp = new MapPoint();
            mp.setType(point.getType());
            if (point.getLabel() != null) {
                mp.setName(point.getLabel().getText());
            }
            mp.setMaxResolution(res);
            mp.setMinResolution(res);
            mp.setLocation(point.getLocation());
            overviewSource.addPoint(mp);
        }
    }
}

Example 3 with Zoom

use of uk.me.parabola.imgfmt.app.trergn.Zoom in project mkgmap by openstreetmap.

the class OverviewBuilder method readShapes.

/**
 * Read the polygons from the .img file and add them to the overview map.
 * We read from the least detailed level (apart from the empty one).
 *
 * @param mapReader Map reader on the detailed .img file.
 */
private void readShapes(MapReader mapReader) {
    Zoom[] levels = mapReader.getLevels();
    for (int l = 1; l < levels.length; l++) {
        int min = levels[l].getLevel();
        int res = levels[l].getResolution();
        List<Polygon> list = mapReader.shapesForLevel(min, MapReader.WITH_EXT_TYPE_DATA);
        for (Polygon shape : list) {
            if (log.isDebugEnabled())
                log.debug("got polygon", shape);
            if (shape.getType() == 0x4b) {
                hasBackground = true;
            }
            MapShape ms = new MapShape();
            List<Coord> points = shape.getPoints();
            if (log.isDebugEnabled())
                log.debug("polygon point list", points);
            if (points.size() < 3)
                continue;
            ms.setType(shape.getType());
            if (shape.getLabel() != null)
                ms.setName(shape.getLabel().getText());
            ms.setMaxResolution(res);
            ms.setMinResolution(res);
            ms.setPoints(points);
            overviewSource.addShape(ms);
        }
    }
}

Example 4 with Zoom

use of uk.me.parabola.imgfmt.app.trergn.Zoom in project mkgmap by openstreetmap.

the class MapBuilder method makeMapAreas.

/**
 * Drive the map generation by stepping through the levels, generating the
 * subdivisions for the level and filling in the map elements that should
 * go into the area.
 *
 * This is fairly complex: you need to divide into subdivisions depending on
 * their size and the number of elements that will be contained.
 *
 * @param map The map.
 * @param src The data for the map.
 */
private void makeMapAreas(Map map, LoadableMapDataSource src) {
    // The top level has to cover the whole map without subdividing, so
    // do a special check to make sure.
    LevelInfo[] levels = null;
    if (src instanceof OverviewMapDataSource) {
        mergeLines = true;
        prepShapesForMerge(src.getShapes());
        mergeShapes = true;
        levels = src.mapLevels();
    } else {
        if (OverviewBuilder.isOverviewImg(map.getFilename())) {
            levels = src.overviewMapLevels();
        } else {
            levels = src.mapLevels();
        }
    }
    if (levels == null) {
        throw new ExitException("no info about levels available.");
    }
    LevelInfo levelInfo = levels[0];
    // If there is already a top level zoom, then we shouldn't add our own
    Subdivision topdiv;
    if (levelInfo.isTop()) {
        // There is already a top level definition.  So use the values from it and
        // then remove it from the levels definition.
        levels = Arrays.copyOfRange(levels, 1, levels.length);
        Zoom zoom = map.createZoom(levelInfo.getLevel(), levelInfo.getBits());
        topdiv = makeTopArea(src, map, zoom);
    } else {
        // We have to automatically create the definition for the top zoom level.
        int maxBits = getMaxBits(src);
        // decrease it so that it is less.
        if (levelInfo.getBits() <= maxBits)
            maxBits = levelInfo.getBits() - 1;
        // Create the empty top level
        Zoom zoom = map.createZoom(levelInfo.getLevel() + 1, maxBits);
        topdiv = makeTopArea(src, map, zoom);
    }
    // We start with one map data source.
    List<SourceSubdiv> srcList = Collections.singletonList(new SourceSubdiv(src, topdiv));
    // Now the levels filled with features.
    for (LevelInfo linfo : levels) {
        List<SourceSubdiv> nextList = new ArrayList<>();
        Zoom zoom = map.createZoom(linfo.getLevel(), linfo.getBits());
        for (SourceSubdiv srcDivPair : srcList) {
            MapSplitter splitter = new MapSplitter(srcDivPair.getSource(), zoom);
            MapArea[] areas = splitter.split(orderByDecreasingArea);
            log.info("Map region", srcDivPair.getSource().getBounds(), "split into", areas.length, "areas at resolution", zoom.getResolution());
            for (MapArea area : areas) {
                Subdivision parent = srcDivPair.getSubdiv();
                Subdivision div = makeSubdivision(map, parent, area, zoom);
                if (log.isDebugEnabled())
                    log.debug("ADD parent-subdiv", parent, srcDivPair.getSource(), ", z=", zoom, " new=", div);
                nextList.add(new SourceSubdiv(area, div));
            }
            if (nextList.size() > 0) {
                Subdivision lastdiv = nextList.get(nextList.size() - 1).getSubdiv();
                lastdiv.setLast(true);
            }
        }
        srcList = nextList;
    }
}

Example 5 with Zoom

use of uk.me.parabola.imgfmt.app.trergn.Zoom in project mkgmap by openstreetmap.

the class OverviewBuilder method readFileIntoOverview.

/**
 * Add an individual .img file to the overview map.
 *
 * @param finfo Information about an individual map.
 */
private void readFileIntoOverview(FileInfo finfo) throws FileNotFoundException {
    addMapCoverageArea(finfo);
    MapReader mapReader = null;
    String filename = finfo.getFilename();
    if (codepage == null) {
        codepage = finfo.getCodePage();
    }
    if (codepage != finfo.getCodePage()) {
        System.err.println("WARNING: input file " + filename + " has different code page " + finfo.getCodePage());
    }
    try {
        mapReader = new MapReader(filename);
        if (encodingType == null) {
            encodingType = mapReader.getEncodingType();
        }
        if (encodingType != mapReader.getEncodingType()) {
            System.err.println("WARNING: input file " + filename + " has different charset type " + encodingType);
        }
        String[] msgs = mapReader.getCopyrights();
        boolean found = false;
        for (String[] block : copyrightMsgs) {
            if (Arrays.deepEquals(block, msgs)) {
                found = true;
                break;
            }
        }
        if (!found)
            copyrightMsgs.add(msgs);
        msgs = finfo.getLicenseInfo();
        found = false;
        for (String[] block : licenseInfos) {
            if (Arrays.deepEquals(block, msgs)) {
                found = true;
                break;
            }
        }
        if (!found)
            licenseInfos.add(msgs);
        Zoom[] levels = mapReader.getLevels();
        if (wantedLevels == null) {
            LevelInfo[] mapLevels;
            if (isOverviewImg(filename)) {
                mapLevels = new LevelInfo[levels.length - 1];
                for (int i = 1; i < levels.length; i++) {
                    mapLevels[i - 1] = new LevelInfo(levels[i].getLevel(), levels[i].getResolution());
                }
            } else {
                mapLevels = new LevelInfo[1];
                mapLevels[0] = new LevelInfo(levels[1].getLevel(), levels[1].getResolution());
            }
            wantedLevels = mapLevels;
        }
        if (isOverviewImg(filename)) {
            readPoints(mapReader);
            readLines(mapReader);
            readShapes(mapReader);
        }
    } catch (FileNotFoundException e) {
        throw new ExitException("Could not open " + filename + " when creating overview file");
    } finally {
        Utils.closeFile(mapReader);
    }
}