掌握osgEarth快速入门:优秀源码示例教程

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资源摘要信息:"osgEarth源码例子程序是学习和快速掌握osgEarth的一个极佳资源。osgEarth是一个开源的地理空间技术库,它构建在OpenSceneGraph(OSG)之上,用于创建高性能和跨平台的2D/3D地球可视化应用。该库被广泛应用于地图渲染、虚拟地球、飞行模拟以及其他需要空间可视化支持的场景中。 osgEarth的优点包括高性能、可扩展性强以及丰富的功能。它支持多种地图源,如TMS、WMS、WFS、Google Maps、Bing Maps等,也支持多种地形数据源,例如Google Earth地形、Terragen等。此外,osgEarth还提供了丰富的API接口,使得开发者可以自定义图层、数据模型、光照效果等,从而构建复杂的地理信息系统(GIS)应用。 一个快速上手osgEarth的方法是通过研究和运行其提供的示例程序。这些例子程序覆盖了osgEarth的基本使用,包括初始化地图视图、图层叠加、数据源处理、样式自定义、相机控制、动画和特效等。通过分析这些示例的源码,开发者可以快速了解如何将osgEarth集成到自己的项目中,并学习到如何扩展其功能以满足特定的应用需求。 学习osgEarth的过程中,开发者应当熟悉以下几个核心概念: 1. 地图视图(MapView):这是osgEarth的主窗口,负责显示地图和处理用户交互。开发者需要了解如何创建和配置地图视图,以及如何在其中添加和管理图层。 2. 地图模型(MapModel):它是描述地图的配置信息,包括使用的影像、地形、矢量数据源以及各种图层的叠加关系。理解地图模型的结构对于定制地图至关重要。 3. 地图叠加(Layer叠加):这是地图视觉化的基础,开发者需要学习如何将不同的数据源(如影像、地形、矢量数据等)作为图层叠加在地图上。 4. 样式定义(Style definition):样式定义决定了地图的外观,包括颜色、纹理、光照、阴影等。开发者需要掌握如何通过样式来改变图层的表现形式。 5. 相机控制(Camera control):相机控制是指如何在程序中控制视点位置和方向,从而让使用者可以从不同的角度和高度观察地球模型。 6. 动画和特效(Animation and effect):这些是指在地图上添加动态效果,比如飞行路径动画、天气效果等,增强用户交互体验。 学习osgEarth不仅需要了解这些概念,还要通过实践来加深理解。运行和修改源码例子程序是掌握osgEarth的有效方式之一。通过亲自动手修改代码和观察效果的变化,开发者可以更快地熟悉osgEarth的API,并提升解决问题的能力。 最后,官方文档和社区讨论也是学习osgEarth不可或缺的部分。它们提供了丰富的教程、FAQ、API文档和示例代码,这些都是快速解决问题和深入理解技术细节的重要资源。开发者应该充分利用这些资源来提升自己的学习效率和质量。"
2017-11-16 上传
osgEarth 的 121 个案例详解 osgEarth 的 121 个案例详解 ...........................................................................................................1 1. aeqd.earth.................................................................................................................................4 2. annotation.earth .......................................................................................................................5 3. annotation_dateline.earth........................................................................................................6 4. annotation_dateline_projected.earth ......................................................................................8 5. annotation_flat.earth................................................................................................................8 6. arcgisonline.earth .....................................................................................................................9 7. bing.earth................................................................................................................................10 8. boston.earth............................................................................................................................11 9. boston_buildings.earth ...........................................................................................................12 10. boston_projected.earth ..................................................................................................13 11. boston_tfs.earth..............................................................................................................14 12. boston-gpu.earth ............................................................................................................15 13. bumpmap.earth ..............................................................................................................16 14. clouds.earth ....................................................................................................................17 15. colorramp.earth ..............................................................................................................18 16. contourmap.earth ...........................................................................................................19 17. datum_override.earth.....................................................................................................20 18. day_night_mp.earth........................................................................................................21 19. day_night_rex.earth........................................................................................................21 20. detail_texture.earth ........................................................................................................21 21. errors.earth .....................................................................................................................22 22. fade_elevation.earth.......................................................................................................22 23. feature_clip_plane.earth.................................................................................................23 24. feature_country_boundaries.earth.................................................................................24 25. feature_custom_filters.earth ..........................................................................................25 26. feature_draped_lines.earth ............................................................................................26 27. feature_draped_polygons.earth .....................................................................................27 28. feature_elevation.earth ..................................................................................................28 29. feature_extrude.earth.....................................................................................................29 30. feature_geom.earth ........................................................................................................30 31. feature_gpx.earth............................................................................................................31 32. feature_inline_geometry.earth.......................................................................................32 33. feature_labels.earth........................................................................................................33 34. feature_labels_script.earth.............................................................................................35 35. feature_levels_and_selectors.earth................................................................................35 36. feature_model_scatter.earth ..........................................................................................36 37. feature_models.earth .....................................................................................................37 38. feature_occlusion_culling.earth......................................................................................38osgEarth 编辑器 SXEarth www.sxsim.com 2 39. feature_offset_polygons.earth .......................................................................................38 40. feature_overlay.earth......................................................................................................39 41. feature_poles.earth.........................................................................................................40 42. feature_population_cylinders.earth ...............................................................................40 43. feature_raster.earth ........................................................................................................41 44. feature_rasterize.earth ...................................................................................................41 45. feature_rasterize_2.earth ...............................................................................................42 46. feature_scripted_styling.earth........................................................................................43 47. feature_scripted_styling_2.earth....................................................................................43 48. feature_scripted_styling_3.earth....................................................................................43 49. feature_style_selector.earth ...........................................................................................44 50. feature_tfs.earth .............................................................................................................45 51. feature_tfs_scripting.earth .............................................................................................46 52. feature_wfs.earth............................................................................................................47 53. fractal_elevation.earth....................................................................................................47 54. gdal_multiple_files.earth ................................................................................................47 55. gdal_tiff.earth..................................................................................................................48 56. geomshader.earth ...........................................................................................................49 57. glsl.earth..........................................................................................................................50 58. glsl_filter.earth ................................................................................................................51 59. graticules.earth ...............................................................................................................52 60. hires-inset.earth..............................................................................................................53 61. intersect_filter.earth .......................................................................................................54 62. land_cover_mixed.earth .................................................................................................55 63. layer_opacity.earth .........................................................................................................55 64. ldb.earth..........................................................................................................................56 65. mapbox.earth..................................................................................................................56 66. mask.earth ......................................................................................................................57 67. mb_tiles.earth.................................................................................................................58 68. mercator_to_plate_carre.earth ......................................................................................59 69. mgrs_graticule.earth.......................................................................................................60 70. min_max_level.earth ......................................................................................................60 71. min_max_range.earth.....................................................................................................61 72. min_max_range_rex.earth..............................................................................................62 73. min_max_resolutions.earth............................................................................................62 74. multiple_heightfields.earth.............................................................................................64 75. night.earth.......................................................................................................................65 76. nodata.earth ...................................................................................................................65 77. noise.earth ......................................................................................................................68 78. normalmap.earth ............................................................................................................68 79. ocean.earth .....................................................................................................................69 80. ocean_no_elevation.earth ..............................................................................................69 81. openstreetmap.earth......................................................................................................69 82. openstreetmap_buildings.earth .....................................................................................70osgEarth 编辑器 SXEarth www.sxsim.com 3 83. openstreetmap_flat.earth...............................................................................................70 84. openstreetmap_full.earth...............................................................................................70 85. openweathermap_clouds.earth......................................................................................71 86. openweathermap_precipitation.earth ...........................................................................71 87. openweathermap_pressure.earth ..................................................................................71 88. photosphere1.earth ........................................................................................................71 89. photosphere2.earth ........................................................................................................72 90. readymap.earth...............................................................................................................73 91. readymap_flat.earth .......................................................................................................73 92. readymap_include.earth.................................................................................................74 93. readymap_template.earth..............................................................................................74 94. readymap-elevation-only.earth.......................................................................................74 95. readymap-osm.earth ......................................................................................................75 96. readymap-priority.earth..................................................................................................75 97. readymap-rex.earth ........................................................................................................75 98. roads.earth......................................................................................................................76 99. roads-flattened.earth......................................................................................................76 100. roads-test.earth...............................................................................................................76 101. scene_clamping.earth.....................................................................................................76 102. silverlining.earth..............................................................................................................78 103. simple_model.earth........................................................................................................78 104. skyview1.earth ................................................................................................................79 105. skyview2.earth ................................................................................................................80 106. splat.earth .......................................................................................................................81 107. splat-blended-with-imagery.earth ..................................................................................81 108. splat-with-mask-layer.earth.............................................................................................81 109. splat-with-multiple-zones.earth......................................................................................82 110. splat-with-rasterized-land-cover.earth............................................................................82 111. stamen_toner.earth ........................................................................................................82 112. stamen_watercolor.earth................................................................................................82 113. state_plane.earth............................................................................................................82 114. tess_screen_space.earth.................................................................................................82 115. tess-coastlines.earth .......................................................................................................82 116. tess-terrain.earth ............................................................................................................83 117. triton.earth......................................................................................................................83 118. triton_drop_shader.earth................................................................................................83 119. utm.earth ........................................................................................................................83 120. utm_graticule.earth ........................................................................................................83 121. vertical_datum.earth ......................................................................................................83 122. wms_nexrad.earth ..........................................................................................................84 123. wms-t_nexrad_animated.earth ......................................................................................84 124. 编辑问题总结....................................................................................错误!未定义书签。