worldwind 地图显示字体修改

worldwind 地图显示字体修改

近期用到worldwind，研究了一下，把二次开发中遇到的问题与心得在此记录一下。

问题

工程code完之后，发现在显示器上显示的并不太理想，主要是字体太小，而显示出的字体又不会根据地图比例尺的变化而变化，所以只能在worldwind源码中对字号进行修改。

版本

开发用的版本是Java worldwind2.1。源码可以在worldwind官网上进行下载。

修改前效果

修改方法

在源码中修改，在gov.nasa.worldwind.layers.Earth包中，找到NASAWFSPlaceNameLayer类，在类的makePlaceNameServiceSet方法中将宋体字号对应的对size修改。

修改后的代码如下所示：

private static PlaceNameServiceSet makePlaceNameServiceSet() {
        final String service = "http://127.0.0.1/wfs.jsp";
        final String fileCachePath = "Earth/PlaceNames/WFSPlaceNamesVersion1.0";
        PlaceNameServiceSet placeNameServiceSet = new PlaceNameServiceSet();
        placeNameServiceSet.setExpiryTime(new GregorianCalendar(2008, 1, 11).getTimeInMillis());
        PlaceNameService placeNameService;
        final boolean addVersionTag=true;  //true if pointing to a new wfs server
        // Oceans
        if (activeNamesList.contains(OCEANS)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_oceans", fileCachePath, Sector.FULL_SPHERE, GRID_1x1,
                    java.awt.Font.decode("宋体-BOLDITALIC-20"), addVersionTag);
            placeNameService.setColor(new java.awt.Color(200, 200, 200));
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_A);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // Continents
        if (activeNamesList.contains(CONTINENTS)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_continents", fileCachePath, Sector.FULL_SPHERE,
                    GRID_1x1, java.awt.Font.decode("宋体-BOLD-20"), addVersionTag);
            placeNameService.setColor(new java.awt.Color(255, 255, 240));
            placeNameService.setMinDisplayDistance(LEVEL_G);
            placeNameService.setMaxDisplayDistance(LEVEL_A);
            placeNameServiceSet.addService(placeNameService, false);
        }

         // Water Bodies
        if (activeNamesList.contains(WATERBODIES)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_waterbodies", fileCachePath, Sector.FULL_SPHERE,
                    GRID_4x8, java.awt.Font.decode("宋体-ITALIC-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.cyan);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_B);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // Trenches & Ridges
        if (activeNamesList.contains(TRENCHESRIDGES)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_trenchesridges", fileCachePath, Sector.FULL_SPHERE,
                    GRID_4x8, java.awt.Font.decode("宋体-BOLDITALIC-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.cyan);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_B);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // Deserts & Plains
        if (activeNamesList.contains(DESERTSPLAINS)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_desertsplains", fileCachePath, Sector.FULL_SPHERE,
                    GRID_4x8, java.awt.Font.decode("宋体-BOLDITALIC-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.orange);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_B);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // Lakes & Rivers
        if (activeNamesList.contains(LAKESRIVERS)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_lakesrivers", fileCachePath, Sector.FULL_SPHERE,
                    GRID_8x16, java.awt.Font.decode("宋体-ITALIC-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.cyan);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_C);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // Mountains & Valleys
        if (activeNamesList.contains(MOUNTAINSVALLEYS)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_mountainsvalleys", fileCachePath, Sector.FULL_SPHERE,
                    GRID_8x16, java.awt.Font.decode("宋体-BOLDITALIC-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.orange);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_C);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // Countries
        if (activeNamesList.contains(COUNTRIES)) {
            placeNameService = new PlaceNameService(service, "topp:countries", fileCachePath, Sector.FULL_SPHERE, GRID_4x8,
                    java.awt.Font.decode("宋体-BOLD-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.white);
            placeNameService.setMinDisplayDistance(LEVEL_G);
            placeNameService.setMaxDisplayDistance(LEVEL_D);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // GeoNet World Capitals
        if (activeNamesList.contains(GEONET_P_PPLC)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_geonet_p_pplc", fileCachePath, Sector.FULL_SPHERE,
                    GRID_16x32,  java.awt.Font.decode("宋体-BOLD-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.yellow);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_D);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // World Cities >= 500k
        if (activeNamesList.contains(CITIESOVER500K)) {
            placeNameService = new PlaceNameService(service, "topp:citiesover500k", fileCachePath, Sector.FULL_SPHERE,
                    GRID_8x16, java.awt.Font.decode("宋体-BOLD-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.yellow);
            placeNameService.setMinDisplayDistance(0);
            placeNameService.setMaxDisplayDistance(LEVEL_D);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // World Cities >= 100k
        if (activeNamesList.contains(CITIESOVER100K)) {
            placeNameService = new PlaceNameService(service, "topp:citiesover100k", fileCachePath, Sector.FULL_SPHERE,
                    GRID_16x32, java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.yellow);
            placeNameService.setMinDisplayDistance(LEVEL_N);
            placeNameService.setMaxDisplayDistance(LEVEL_F);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // World Cities >= 50k and <100k
        if (activeNamesList.contains(CITIESOVER50K)) {
            placeNameService = new PlaceNameService(service, "topp:citiesover50k", fileCachePath, Sector.FULL_SPHERE,
                    GRID_16x32, java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.yellow);
            placeNameService.setMinDisplayDistance(LEVEL_N);
            placeNameService.setMaxDisplayDistance(LEVEL_H);
            placeNameServiceSet.addService(placeNameService, false);
        }

        // World Cities >= 10k and <50k
        if (activeNamesList.contains(CITIESOVER10K)) {
            placeNameService = new PlaceNameService(service, "topp:citiesover10k", fileCachePath, Sector.FULL_SPHERE,
                    GRID_36x72, java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.yellow);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_I);
            placeNameServiceSet.addService(placeNameService, false);
        }

        // World Cities >= 1k and <10k
        if (activeNamesList.contains(CITIESOVER1K)) {
            placeNameService = new PlaceNameService(service, "topp:citiesover1k", fileCachePath, Sector.FULL_SPHERE,
                    GRID_36x72, java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.yellow);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_K);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // US Cities (Population Over 0)
        if (activeNamesList.contains(USCITIESOVER0)) {
            //values for masking sector pulled from wfs capabilities request
            Sector maskingSector = new Sector(Angle.fromDegrees(18.0), Angle.fromDegrees(70.7), Angle.fromDegrees(-176.66), Angle.fromDegrees(-66.0));
            placeNameService = new PlaceNameService(service, "topp:wpl_uscitiesover0", fileCachePath, maskingSector,
                    GRID_36x72, java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.yellow);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_N);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // US Cities (No Population)
        if (activeNamesList.contains(USCITIES0)) {
            //values for masking sector pulled from wfs capabilities request
            Sector maskingSector = new Sector(Angle.fromDegrees(-14.4), Angle.fromDegrees(71.3), Angle.fromDegrees(-176.66), Angle.fromDegrees(178.88));
            placeNameService = new PlaceNameService(service, "topp:wpl_uscities0", fileCachePath, maskingSector,
                    GRID_288x576, java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.orange);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_N);//M);
            placeNameServiceSet.addService(placeNameService, false);
        }

        // US Anthropogenic Features
        if (activeNamesList.contains(US_ANTHROPOGENIC)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_us_anthropogenic", fileCachePath, Sector.FULL_SPHERE, GRID_288x576,
                    java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.orange);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_P);
            placeNameServiceSet.addService(placeNameService, false);
        }

        // US Water Features
        if (activeNamesList.contains(US_WATER)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_us_water", fileCachePath, Sector.FULL_SPHERE, GRID_144x288,
                    java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.cyan);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_M);
            placeNameServiceSet.addService(placeNameService, false);
        }
       // US Terrain Features
        if (activeNamesList.contains(US_TERRAIN)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_us_terrain", fileCachePath, Sector.FULL_SPHERE, GRID_72x144,
                    java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.orange);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_O);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // GeoNET Administrative 1st Order
        if (activeNamesList.contains(GEONET_A_ADM1)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_geonet_a_adm1", fileCachePath, Sector.FULL_SPHERE, GRID_36x72,
                    java.awt.Font.decode("宋体-BOLD-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.yellow);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_N);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // GeoNET Administrative 2nd Order
        if (activeNamesList.contains(GEONET_A_ADM2)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_geonet_a_adm2", fileCachePath, Sector.FULL_SPHERE, GRID_36x72,
                    java.awt.Font.decode("宋体-BOLD-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.yellow);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_N);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // GeoNET Populated Place Administrative
        if (activeNamesList.contains(GEONET_P_PPLA)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_geonet_p_ppla", fileCachePath, Sector.FULL_SPHERE, GRID_36x72,
                    java.awt.Font.decode("宋体-BOLD-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.pink);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_N);
            placeNameServiceSet.addService(placeNameService, false);
        }
        // GeoNET Populated Place
        if (activeNamesList.contains(GEONET_P_PPL)) {
            placeNameService = new PlaceNameService(service, "topp:wpl_geonet_p_ppl", fileCachePath, Sector.FULL_SPHERE, GRID_36x72,
                    java.awt.Font.decode("宋体-PLAIN-20"), addVersionTag);
            placeNameService.setColor(java.awt.Color.pink);
            placeNameService.setMinDisplayDistance(0d);
            placeNameService.setMaxDisplayDistance(LEVEL_O);
            placeNameServiceSet.addService(placeNameService, false);
        }

        return placeNameServiceSet;
    }

修改后保存源码，在IDE中export。

导出

我用的MyEclipse导出jar包，选择 Jar File,导出时只选择项目下的src目录。导出后将导出的worldwind.jar build进自己二次开发的项目中。

修改后效果

有问题可以一起交流。