Hi,
Waldron, and Hertlein, thank you so much.
"Gaussian projected coordinate system" means when I generate the terrain, I use
like parameters --cs "+proj=tmerc +lat_0=0 +lon_0=117 +k=1 +x_0=500000 +y_0=0
+ellps=krass +units=m +no_defs" and "-e 659690 3529390 5835 4525 "in
commandline, so the terrain is generated using the WGS84 globe and Gaussian
coordinate.
I studied the vpb_earth_bayarea.earth file which has the link of
http://www.openscenegraph.org/data/earth_bayarea/earth.ive. I directly download
the earth.ive and locate it in my hard disk. Then I rewrite the
vpb_earth_bayarea.earth, which is as follows:
<!--
osgEarth Sample
This example pulls imagery and dems from an online VirtualPlanetBuilder
generated database.
-->
<map name="Virtual Planet Builder model" type="geocentric">
<image name="imagery layer 0" driver="vpb">
<url>e:\earth.ive</url>
<primary_split_level>5</primary_split_level>
<secondary_split_level>11</secondary_split_level>
</image>
<heightfield name="dem" driver="vpb">
<url>e:\earth.ive</url>
</heightfield>
<!--
<cache>
<path>cache</path>
</cache>
-->
</map>
i.e. I only replace the link
http://www.openscenegraph.org/data/earth_bayarea/earth.ive in
vpb_earth_bayarea.earth with “e:\earth.ive” in the new .earth file. I open the
new .earth file using osgviewer, but there is still nothing but the blue
background in the scene (Fig.1 ). When I quit the program, the cmd window is
shown in Fig. 2 and Fig.3 . What is going on with my program, would you give me
some suggestions, thank you.
Thank you!
Cheers,
ting
------------------
Read this topic online here:
http://forum.openscenegraph.org/viewtopic.php?p=30700#30700
Attachments:
http://forum.openscenegraph.org//files/fig3_267.jpg
http://forum.openscenegraph.org//files/fig2_197.jpg
http://forum.openscenegraph.org//files/fig1_124.jpg
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