osg加载boston.earth 出现异常 求助~
我现在使用osgearth_viewer 观察boston.earth是正常的，我将boston.earth拷贝到osg工程下，在一个简单的osg程序中加载boston.earth，结果出现如图的情况，请问：1 是什么原因造成的，那些背景去哪里了？
2 拿boston.earth这个文件来说，有没有办法可以去掉它里面的地球，同时保留星空背景啊、太阳什么的？是要修改earth文件吗？请各位指点一二，不胜感激。
boston.earth的代码，需要的话，大概要改什么地方？<!--
osgEarth Sample.
Demonstrates the use of a Resource Library in order to apply "typical" textures
to extruded buildings.
-->
<map name="Boston Demo" type="geocentric" version="2">
<image name="ReadyMap.org - Imagery" driver="tms">
<url>http://readymap.org/readymap/tiles/1.0.0/22/</url>
</image>
<model name="buildings" driver="feature_geom">
<features name="buildings" driver="ogr">
<url>../data/boston_buildings_utm19.shp</url>
<build_spatial_index>true</build_spatial_index>
</features>
<feature_indexing>true</feature_indexing>
<fade_in_duration>1.0</fade_in_duration>
<!--
The "layout" element activates tiling and paging of the feature set. If you
omit the layout element, the entire feature set will render as one pre-loaded
model (no tiling or paging).
Each "level" is a level of detail for features, and should select a style
to use for that level. It also can specify min and max camera ranges,
in meters.
The "tile size factor" controls how a feature is tiled. The higher this factor,
the smaller the tile size, and the more tiles will be used to render a given
level of detail. The default is 15. (The renderer multiplies a tile's radius
by the tile_size_factor to calculate the maximum suitable camera range for
a given level of subdivision. It compares this to the feature level's max
range to decide how many tiles to create.)
-->
<layout>
<tile_size_factor>45</tile_size_factor>
<level name="default" max_range="20000">
<selector class="buildings"/>
</level>
</layout>
<styles>
<library name="us_resources">
<url>../data/resources/textures_us/catalog.xml</url>
</library>
<style type="text/css">
buildings {
extrusion-height: 3.5 * max(, 1);
extrusion-flatten: true;
extrusion-wall-style:building-wall;
extrusion-wall-gradient: 0.8;
extrusion-roof-style:building-rooftop;
altitude-clamping: none;
}
building-wall {
skin-library: us_resources;
skin-tags: building;
skin-random-seed: 1;
fill: #ffffff;
}
building-rooftop {
skin-library: us_resources;
skin-tags: rooftop;
skin-tiled: true;
skin-random-seed: 1;
fill: #ffffff;
}
</style>
</styles>
</model>
<external>
<viewpoints>
<viewpoint name="Boston Overview" heading="24.261" height="0" lat="42.34425" long="-71.076262" pitch="-21.6" range="3450"/>
<viewpoint name="Boston Downtown 1" heading="117" lat="42.3568" long="-71.0585" height="0" pitch="-20.4" range="1500" />
<viewpoint name="Boston Downtown 2" heading="-128.5" lat="42.3582" long="-71.0546" height="0" pitch="-19" range="1620" />
<viewpoint name="Boston Street Level" heading="-145.85" lat="42.36460" long="-71.053612" pitch="-10.1" range="85.034"/>
</viewpoints>
<sky hours="21.0"/>
</external>
</map>
不知道 是不是osgearth_viewer 就设定了背景，等待 OE 大牛来解释吧 1.背景问题，boston.earth里的<sky hours="21.0"/>标签就添加了天空属性和时间属性；
2.你的意思是想用"平面"的方式来展示地图吧？<map name="Boston Demo" type="geocentric" version="2">这里的geocentric改为projected。 cmygiser 发表于 2013-4-24 11:25 static/image/common/back.gif
1.背景问题，boston.earth里的标签就添加了天空属性和时间属性；
2.你的意思是想用"平面"的方式来展示地图 ...
第二个我没说清楚可能，我的背景指的就是宇宙背景 ，我想把地球去掉，不是吧地球铺平 本帖最后由 cmygiser 于 2013-4-24 13:56 编辑
感觉这样做是在踢osgEarth的馆子;P
你不要earth了，那你用osgEarth干啥？ 本帖最后由 lanbomegp 于 2013-4-24 23:48 编辑
cmygiser 发表于 2013-4-24 13:55 static/image/common/back.gif
感觉这样做是在踢osgEarth的馆子
你不要earth了，那你用osgEarth干啥？
哈哈，您说的是。我去看看，谢谢回复。 您 好，您这个问题是怎么解决的？
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