#include <simgear/compiler.h>
#include <map>
-SG_USING_STD(map);
+using std::map;
#include <osg/AlphaFunc>
#include <osg/Group>
#include <osg/StateSet>
#include <osg/Transform>
-#ifdef SG_MATH_EXCEPTION_CLASH
-# include <math.h>
-#endif
-
#include <simgear/debug/logstream.hxx>
+#include <simgear/math/SGMath.hxx>
#include <simgear/math/sg_random.h>
#include <simgear/misc/sg_path.hxx>
#include <simgear/misc/sgstream.hxx>
#include "matmodel.hxx"
-\f
-////////////////////////////////////////////////////////////////////////
-// Local static functions.
-////////////////////////////////////////////////////////////////////////
-
-/**
- * Internal method to test whether a file exists.
- *
- * TODO: this should be moved to a SimGear library of local file
- * functions.
- */
-static inline bool
-local_file_exists( const string& path ) {
- sg_gzifstream in( path );
- if ( ! in.is_open() ) {
- return false;
- } else {
- return true;
- }
-}
-
+using namespace simgear;
\f
////////////////////////////////////////////////////////////////////////
}
int
-SGMatModel::get_model_count( SGModelLib *modellib,
- const string &fg_root,
- SGPropertyNode *prop_root,
- double sim_time_sec )
+SGMatModel::get_model_count( SGPropertyNode *prop_root )
{
- load_models( modellib, fg_root, prop_root, sim_time_sec );
+ load_models( prop_root );
return _models.size();
}
inline void
-SGMatModel::load_models ( SGModelLib *modellib,
- const string &fg_root,
- SGPropertyNode *prop_root,
- double sim_time_sec )
+SGMatModel::load_models( SGPropertyNode *prop_root )
{
// Load model only on demand
if (!_models_loaded) {
for (unsigned int i = 0; i < _paths.size(); i++) {
- osg::Node *entity = modellib->load_model( fg_root, _paths[i],
- prop_root, sim_time_sec,
- /*cache_object*/ true );
+ osg::Node *entity = SGModelLib::loadModel(_paths[i], prop_root);
if (entity != 0) {
// FIXME: this stuff can be handled
// in the XML wrapper as well (at least,
// the billboarding should be handled
// there).
- // Create multiple LoD nodes so instead of all objects
- // of the same type appearing at once, some appear further
- // away.
- //
- // Very basic hardcoded distribution:
- // 4 at normal range
- // 2 at 1.5 times normal range
- // 1 at 2 time normal range.
- //
- // We achieve this by creating the three different LoD
- // nodes and adding them to the _models list multiple times.
-
- osg::LOD * lod1 = new osg::LOD;
- lod1->setName("Model LOD");
- lod1->setRangeMode(osg::LOD::DISTANCE_FROM_EYE_POINT);
- lod1->setRange(0, 0, _range_m);
-
- osg::LOD * lod15 = new osg::LOD;
- lod15->setName("Model LOD - 1.5");
- lod15->setRangeMode(osg::LOD::DISTANCE_FROM_EYE_POINT);
- lod15->setRange(0, 0, 1.5 * _range_m);
-
- osg::LOD * lod2 = new osg::LOD;
- lod2->setName("Model LOD - 2.0");
- lod2->setRangeMode(osg::LOD::DISTANCE_FROM_EYE_POINT);
- lod2->setRange(0, 0, 2.0 * _range_m);
-
if (_heading_type == HEADING_BILLBOARD) {
// if the model is a billboard, it is likely :
// 1. a branch with only leaves,
stateSet->setAttributeAndModes(alphaFunc,
osg::StateAttribute::OVERRIDE);
stateSet->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
-
- lod1->addChild(entity);
- lod15->addChild(entity);
- lod2->addChild(entity);
- } else {
- lod1->addChild(entity);
- lod15->addChild(entity);
- lod2->addChild(entity);
- }
-
- // Vary the distribution of LoDs by adding multiple times.
- _models.push_back(lod1);
- _models.push_back(lod1);
- _models.push_back(lod1);
- _models.push_back(lod1);
-
- _models.push_back(lod15);
- _models.push_back(lod15);
-
- _models.push_back(lod2);
-
+ }
+
+ _models.push_back(entity);
+
} else {
SG_LOG(SG_INPUT, SG_ALERT, "Failed to load object " << _paths[i]);
}
}
osg::Node*
-SGMatModel::get_model( int index,
- SGModelLib *modellib,
- const string &fg_root,
- SGPropertyNode *prop_root,
- double sim_time_sec )
-{
- load_models( modellib, fg_root, prop_root, sim_time_sec ); // comment this out if preloading models
- return _models[index].get();
-}
-
-osg::Node*
-SGMatModel::get_random_model( SGModelLib *modellib,
- const string &fg_root,
- SGPropertyNode *prop_root,
- double sim_time_sec )
+SGMatModel::get_random_model( SGPropertyNode *prop_root )
{
- load_models( modellib, fg_root, prop_root, sim_time_sec ); // comment this out if preloading models
+ load_models( prop_root ); // comment this out if preloading models
int nModels = _models.size();
- int index = int(sg_random() * nModels);
- if (index >= nModels)
+ // int index = int(sg_random() * nModels);
+ static int index = -1;
+ if (++index >= nModels)
index = 0;
return _models[index].get();
}
return _coverage_m2;
}
+double SGMatModel::get_range_m() const
+{
+ return _range_m;
+}
+
+double SGMatModel::get_randomized_range_m(mt* seed) const
+{
+ double lrand = mt_rand(seed);
+
+ // Note that the LoD is not completely randomized.
+ // 10% at 2 * range_m
+ // 30% at 1.5 * range_m
+ // 60% at 1 * range_m
+ if (lrand < 0.1) return 2 * _range_m;
+ if (lrand < 0.4) return 1.5 * _range_m;
+ else return _range_m;
+}
+
SGMatModel::HeadingType
SGMatModel::get_heading_type () const
{
return _objects[index];
}
-
-
-
// end of matmodel.cxx
projects / simgear.git / blobdiff