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spt: Make the range multiplier configurable.

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This commit is contained in:
Mathias Froehlich 2013-02-24 13:03:06 +01:00
parent 249155987d
commit 4a31045fd9
1 changed files with 12 additions and 1 deletions
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13
simgear/scene/tgdb/ReaderWriterSPT.cxx
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@ -159,6 +159,16 @@ struct ReaderWriterSPT::LocalOptions {
return ss.str(); return ss.str();
} }
float getRangeMultiplier() const
{
float rangeMultiplier = 2;
if (!_options)
return rangeMultiplier;
std::stringstream ss(_options->getPluginStringData("SimGear::SPT_RANGE_MULTIPLIER"));
ss >> rangeMultiplier;
return rangeMultiplier;
}
const osgDB::Options* _options; const osgDB::Options* _options;
std::vector<unsigned> _pageLevels; std::vector<unsigned> _pageLevels;
}; };
@ -294,7 +304,8 @@ ReaderWriterSPT::createPagedLOD(const BucketBox& bucketBox, const LocalOptions&
pagedLOD->setDatabaseOptions(localOptions.get()); pagedLOD->setDatabaseOptions(localOptions.get());
// The break point for the low level of detail to the high level of detail // The break point for the low level of detail to the high level of detail
float range = 2*sphere.getRadius(); float rangeMultiplier = options.getRangeMultiplier();
float range = rangeMultiplier*sphere.getRadius();
// Look for a low level of detail tile // Look for a low level of detail tile
std::string lodPath = options.getLodPathForBucketBox(bucketBox); std::string lodPath = options.getLodPathForBucketBox(bucketBox);