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Further modifications and restructuring of the scenery loading process.

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This commit is contained in:
curt 2002-03-04 02:36:06 +00:00
parent f75e1b4d7b
commit 536e95b63d
2 changed files with 130 additions and 155 deletions
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281
src/Scenery/tileentry.cxx
View file

@ -54,7 +54,9 @@ FGTileEntry::FGTileEntry ( const SGBucket& b )
center( Point3D( 0.0 ) ),
tile_bucket( b ),
terra_transform( new ssgTransform ),
rwy_lights_transform( new ssgTransform ),
terra_range( new ssgRangeSelector ),
rwy_lights_range( new ssgRangeSelector ),
loaded(false),
pending_models(0)
{
@ -726,10 +728,16 @@ void FGTileEntry::free_tile() {
if ( gnd_lights_transform ) {
// delete the terrain lighting branch (this should already have been
// disconnected from the scene graph)
// disconnected from the scene graph)
ssgDeRefDelete( gnd_lights_transform );
}
if ( rwy_lights_transform ) {
// delete the terrain lighting branch (this should already have been
// disconnected from the scene graph)
ssgDeRefDelete( rwy_lights_transform );
}
// ADA
if ( lightmaps_transform ) {
// delete the terrain lighting branch (this should already have been
@ -753,6 +761,8 @@ void FGTileEntry::prep_ssg_node( const Point3D& p, float vis) {
terra_range->setRange( 1, vis + bounding_radius );
gnd_lights_range->setRange( 0, SG_ZERO );
gnd_lights_range->setRange( 1, vis * 1.5 + bounding_radius );
rwy_lights_range->setRange( 0, SG_ZERO );
rwy_lights_range->setRange( 1, vis * 1.5 + bounding_radius );
#else
float ranges[2];
ranges[0] = SG_ZERO;
@ -762,6 +772,10 @@ void FGTileEntry::prep_ssg_node( const Point3D& p, float vis) {
ranges[1] = vis * 1.5 + bounding_radius;
gnd_lights_range->setRanges( ranges, 2 );
}
if ( rwy_lights_range ) {
ranges[1] = vis * 1.5 + bounding_radius;
rwy_lights_range->setRanges( ranges, 2 );
}
#endif
sgVec3 sgTrans;
sgSetVec3( sgTrans, offset.x(), offset.y(), offset.z() );
@ -795,8 +809,12 @@ void FGTileEntry::prep_ssg_node( const Point3D& p, float vis) {
} else {
sgScaleVec3( up, 10.0 + agl / 20.0 + dist / 5000 );
}
sgAddVec3( sgTrans, up );
gnd_lights_transform->setTransform( sgTrans );
sgVec3 lt_trans;
sgCopyVec3( lt_trans, sgTrans );
sgAddVec3( lt_trans, up );
gnd_lights_transform->setTransform( lt_trans );
// select which set of lights based on sun angle
float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES;
@ -811,6 +829,54 @@ void FGTileEntry::prep_ssg_node( const Point3D& p, float vis) {
}
}
if ( rwy_lights_transform ) {
// we need to lift the lights above the terrain to avoid
// z-buffer fighting. We do this based on our altitude and
// the distance this tile is away from scenery center.
sgVec3 up;
sgCopyVec3( up, globals->get_current_view()->get_world_up() );
double agl;
if ( current_aircraft.fdm_state ) {
agl = current_aircraft.fdm_state->get_Altitude() * SG_FEET_TO_METER
- scenery.get_cur_elev();
} else {
agl = 0.0;
}
// sgTrans just happens to be the
// vector from scenery center to the center of this tile which
// is what we want to calculate the distance of
sgVec3 to;
sgCopyVec3( to, sgTrans );
double dist = sgLengthVec3( to );
if ( general.get_glDepthBits() > 16 ) {
sgScaleVec3( up, 0.0 + agl / 100.0 + dist / 10000 );
} else {
sgScaleVec3( up, 1.0 + agl / 20.0 + dist / 5000 );
}
sgVec3 lt_trans;
sgCopyVec3( lt_trans, sgTrans );
sgAddVec3( lt_trans, up );
rwy_lights_transform->setTransform( lt_trans );
// select which set of lights based on sun angle
// float sun_angle = cur_light_params.sun_angle * SGD_RADIANS_TO_DEGREES;
// if ( sun_angle > 95 ) {
// gnd_lights_brightness->select(0x04);
// } else if ( sun_angle > 92 ) {
// gnd_lights_brightness->select(0x02);
// } else if ( sun_angle > 89 ) {
// gnd_lights_brightness->select(0x01);
// } else {
// gnd_lights_brightness->select(0x00);
// }
}
// ADA
// Transform & Render runway lights - 23 Mar 2001
sgSetVec3( sgTrans, offset.x(), offset.y(), offset.z() );
@ -957,13 +1023,11 @@ ssgLeaf* FGTileEntry::gen_lights( ssgVertexArray *lights, int inc, float bright
}
ssgBranch*
FGTileEntry::obj_load( const std::string& path,
bool FGTileEntry::obj_load( const std::string& path,
ssgBranch* geometry,
ssgBranch* rwy_lights,
ssgVertexArray* ground_lights, bool is_base )
{
ssgBranch* geometry = new ssgBranch;
ssgBranch* rwy_lights = new ssgBranch;
Point3D c; // returned center point
double br; // returned bounding radius
@ -1029,10 +1093,6 @@ FGTileEntry::load( const SGPath& base, bool is_base )
ssgBranch* new_tile = new ssgBranch;
// runway lights
rwy_lights_transform = NULL;
rwy_lights_range = NULL;
// Check for master .stg (scene terra gear) file
SGPath stg_name = basename;
stg_name.concat( ".stg" );
@ -1053,11 +1113,13 @@ FGTileEntry::load( const SGPath& base, bool is_base )
SGPath custom_path = tile_path;
custom_path.append( name );
ssgBranch *custom_obj
= obj_load( custom_path.str(), light_pts, true );
if ( custom_obj != NULL ) {
new_tile -> addKid( custom_obj );
ssgBranch *geometry = new ssgBranch;
if ( obj_load( custom_path.str(),
geometry, NULL, light_pts, true ) )
{
new_tile -> addKid( geometry );
} else {
delete geometry;
}
} else if ( token == "OBJECT" ) {
in >> name >> ::skipws;
@ -1067,10 +1129,24 @@ FGTileEntry::load( const SGPath& base, bool is_base )
SGPath custom_path = tile_path;
custom_path.append( name );
ssgBranch *custom_obj
= obj_load( custom_path.str(), NULL, false );
if ( custom_obj != NULL ) {
new_tile -> addKid( custom_obj );
ssgBranch *geometry = new ssgBranch;
ssgBranch *rwy_lights = new ssgBranch;
if ( obj_load( custom_path.str(),
geometry, rwy_lights, NULL, false ) )
{
if ( geometry -> getNumKids() > 0 ) {
new_tile -> addKid( geometry );
} else {
delete geometry;
}
if ( rwy_lights -> getNumKids() > 0 ) {
rwy_lights_range -> addKid( rwy_lights );
} else {
delete rwy_lights;
}
} else {
delete geometry;
delete rwy_lights;
}
} else if ( token == "OBJECT_STATIC" ) {
@ -1179,137 +1255,6 @@ FGTileEntry::load( const SGPath& base, bool is_base )
in >> ::skipws;
}
}
} else {
// no .stg file so this must be old scenery
new_tile = obj_load( basename.str(), light_pts, true );
// load custom objects
SG_LOG( SG_TERRAIN, SG_DEBUG, "Checking for custom objects ..." );
SGPath index_path = tile_path;
index_path.append( index_str );
index_path.concat( ".ind" );
SG_LOG( SG_TERRAIN, SG_DEBUG, "Looking in " << index_path.str() );
sg_gzifstream in( index_path.str() );
if ( in.is_open() ) {
string token, name;
while ( ! in.eof() ) {
in >> token;
if ( token == "OBJECT" ) {
in >> name >> ::skipws;
SG_LOG( SG_TERRAIN, SG_DEBUG, "token = " << token
<< " name = " << name );
SGPath custom_path = tile_path;
custom_path.append( name );
ssgBranch *custom_obj
= obj_load( custom_path.str(), NULL, false );
if ( (new_tile != NULL) && (custom_obj != NULL) ) {
new_tile -> addKid( custom_obj );
}
} else if ( token == "OBJECT_STATIC" ) {
// load object info
double lon, lat, elev, hdg;
in >> name >> lon >> lat >> elev >> hdg >> ::skipws;
SG_LOG( SG_TERRAIN, SG_INFO, "token = " << token
<< " name = " << name
<< " pos = " << lon << ", " << lat
<< " elevation = " << elev
<< " heading = " << hdg );
// object loading is deferred to main render thread,
// but lets figure out the paths right now.
SGPath custom_path = tile_path;
custom_path.append( name );
sgCoord obj_pos;
WorldCoordinate( &obj_pos, center, lat, lon, elev, hdg );
ssgTransform *obj_trans = new ssgTransform;
obj_trans->setTransform( &obj_pos );
// wire as much of the scene graph together as we can
new_tile->addKid( obj_trans );
// bump up the pending models count
pending_models++;
// push an entry onto the model load queue
FGDeferredModel *dm
= new FGDeferredModel( custom_path.str(),
tile_path.str(),
this, obj_trans );
FGTileMgr::model_ready( dm );
} else if ( token == "OBJECT_TAXI_SIGN" ) {
// load object info
double lon, lat, elev, hdg;
in >> name >> lon >> lat >> elev >> hdg >> ::skipws;
SG_LOG( SG_TERRAIN, SG_INFO, "token = " << token
<< " name = " << name
<< " pos = " << lon << ", " << lat
<< " elevation = " << elev
<< " heading = " << hdg );
// load the object itself
SGPath custom_path = tile_path;
custom_path.append( name );
sgCoord obj_pos;
WorldCoordinate( &obj_pos, center, lat, lon, elev, hdg );
ssgTransform *obj_trans = new ssgTransform;
obj_trans->setTransform( &obj_pos );
ssgBranch *custom_obj
= gen_taxi_sign( custom_path.str(), name );
// wire the pieces together
if ( (new_tile != NULL) && (custom_obj != NULL) ) {
obj_trans -> addKid( custom_obj );
}
new_tile->addKid( obj_trans );
} else if ( token == "OBJECT_RUNWAY_SIGN" ) {
// load object info
double lon, lat, elev, hdg;
in >> name >> lon >> lat >> elev >> hdg >> ::skipws;
SG_LOG( SG_TERRAIN, SG_INFO, "token = " << token
<< " name = " << name
<< " pos = " << lon << ", " << lat
<< " elevation = " << elev
<< " heading = " << hdg );
// load the object itself
SGPath custom_path = tile_path;
custom_path.append( name );
sgCoord obj_pos;
WorldCoordinate( &obj_pos, center, lat, lon, elev, hdg );
ssgTransform *obj_trans = new ssgTransform;
obj_trans->setTransform( &obj_pos );
ssgBranch *custom_obj
= gen_runway_sign( custom_path.str(), name );
// wire the pieces together
if ( (new_tile != NULL) && (custom_obj != NULL) ) {
obj_trans -> addKid( custom_obj );
}
new_tile->addKid( obj_trans );
} else {
SG_LOG( SG_TERRAIN, SG_ALERT,
"Unknown token " << token << " in "
<< index_path.str() );
in >> ::skipws;
}
}
}
}
if ( new_tile != NULL ) {
@ -1349,7 +1294,13 @@ FGTileEntry::load( const SGPath& base, bool is_base )
gnd_lights_range->addKid( gnd_lights_brightness );
gnd_lights_transform->addKid( gnd_lights_range );
gnd_lights_transform->setTransform( &sgcoord );
// ground->addKid( gnd_lights_transform );
}
// Add runway lights to scene graph if any exist
if ( rwy_lights_range->getNumKids() > 0 ) {
SG_LOG( SG_TERRAIN, SG_INFO, "adding runway lights" );
rwy_lights_transform->addKid( rwy_lights_range );
rwy_lights_transform->setTransform( &sgcoord );
}
// ADA
@ -1459,7 +1410,7 @@ FGTileEntry::disconnect_ssg_nodes()
exit(-1);
}
// find the terrain lighting branch
// find the ground lighting branch
if ( gnd_lights_transform ) {
pcount = gnd_lights_transform->getNumParents();
if ( pcount > 0 ) {
@ -1481,6 +1432,28 @@ FGTileEntry::disconnect_ssg_nodes()
}
}
// find the runway lighting branch
if ( rwy_lights_transform ) {
pcount = rwy_lights_transform->getNumParents();
if ( pcount > 0 ) {
// find the first parent (should only be one)
ssgBranch *parent = rwy_lights_transform->getParent( 0 ) ;
if( parent ) {
// disconnect the light branch (we previously ref()'d
// it so it won't get freed now)
parent->removeKid( rwy_lights_transform );
} else {
SG_LOG( SG_TERRAIN, SG_ALERT,
"parent pointer is NULL! Dying" );
exit(-1);
}
} else {
SG_LOG( SG_TERRAIN, SG_ALERT,
"Parent count is zero for an ssg light tile! Dying" );
exit(-1);
}
}
// ADA
//runway lights - 23 Mar 2001
// Delete runway lights and free memory

4
src/Scenery/tileentry.hxx
View file

@ -182,7 +182,9 @@ private:
*/
volatile int pending_models;
ssgBranch* obj_load( const std::string& path,
bool obj_load( const std::string& path,
ssgBranch* geometry,
ssgBranch* rwy_lights,
ssgVertexArray* gound_lights,
bool is_base );