-// tile.cxx -- routines to handle a scenery tile
+// tileentry.cxx -- routines to handle a scenery tile
//
// Written by Curtis Olson, started May 1998.
//
-// Copyright (C) 1998, 1999 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 1998 - 2001 Curtis L. Olson - http://www.flightgear.org/~curt
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
-// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
#include <simgear/compiler.h>
+#include <plib/ul.h>
+#include <Main/main.hxx>
-#ifdef SG_MATH_EXCEPTION_CLASH
-# include <math.h>
-#endif
-#include STL_FUNCTIONAL
-#include STL_ALGORITHM
#include STL_STRING
+#include <osg/Array>
+#include <osg/Geometry>
+#include <osg/Geode>
+#include <osg/LOD>
+#include <osg/MatrixTransform>
+#include <osg/NodeCallback>
+#include <osg/Switch>
+
#include <simgear/bucket/newbucket.hxx>
#include <simgear/debug/logstream.hxx>
+#include <simgear/math/polar3d.hxx>
+#include <simgear/math/sg_geodesy.hxx>
#include <simgear/math/sg_random.h>
#include <simgear/misc/sgstream.hxx>
+#include <simgear/scene/material/mat.hxx>
+#include <simgear/scene/material/matlib.hxx>
+#include <simgear/scene/tgdb/apt_signs.hxx>
+#include <simgear/scene/tgdb/obj.hxx>
+#include <simgear/scene/model/placementtrans.hxx>
+#include <simgear/scene/util/SGUpdateVisitor.hxx>
#include <Aircraft/aircraft.hxx>
#include <Include/general.hxx>
+#include <Main/fg_props.hxx>
#include <Main/globals.hxx>
+#include <Main/viewer.hxx>
#include <Scenery/scenery.hxx>
#include <Time/light.hxx>
-#include <Objects/matlib.hxx>
-#include <Objects/newmat.hxx>
-#include <Objects/obj.hxx>
#include "tileentry.hxx"
+#include "tilemgr.hxx"
-SG_USING_STD(for_each);
-SG_USING_STD(mem_fun_ref);
SG_USING_STD(string);
+// FIXME: investigate what huge update flood is clamped away here ...
+class FGTileUpdateCallback : public osg::NodeCallback {
+public:
+ virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
+ {
+ assert(dynamic_cast<SGUpdateVisitor*>(nv));
+ SGUpdateVisitor* updateVisitor = static_cast<SGUpdateVisitor*>(nv);
+
+ osg::Vec3 center = node->getBound().center();
+ double distance = dist(updateVisitor->getGlobalEyePos(),
+ SGVec3d(center[0], center[1], center[2]));
+ if (updateVisitor->getVisibility() + node->getBound().radius() < distance)
+ return;
+
+ traverse(node, nv);
+ }
+};
// Constructor
FGTileEntry::FGTileEntry ( const SGBucket& b )
- : ncount( 0 ),
- center( Point3D( 0.0 ) ),
- tile_bucket( b ),
- terra_transform( new ssgTransform ),
- terra_range( new ssgRangeSelector ),
- loaded(false)
+ : tile_bucket( b ),
+ terra_transform( new osg::Group ),
+ terra_range( new osg::LOD ),
+ loaded(false),
+ pending_models(0),
+ is_inner_ring(false),
+ free_tracker(0)
{
- nodes.clear();
-
- // update the contents
- // if ( vec3_ptrs.size() || vec2_ptrs.size() || index_ptrs.size() ) {
- // SG_LOG( SG_TERRAIN, SG_ALERT,
- // "Attempting to overwrite existing or"
- // << " not properly freed leaf data." );
- // exit(-1);
- // }
+ terra_transform->setUpdateCallback(new FGTileUpdateCallback);
}
// Destructor
FGTileEntry::~FGTileEntry () {
- // cout << "nodes = " << nodes.size() << endl;;
- // delete[] nodes;
}
-
-// recurse an ssg tree and call removeKid() on every node from the
-// bottom up. Leaves the original branch in existance, but empty so
-// it can be removed by the calling routine.
-static void my_remove_branch( ssgBranch * branch ) {
- for ( ssgEntity *k = branch->getKid( 0 );
- k != NULL;
- k = branch->getNextKid() )
- {
- if ( k -> isAKindOf ( ssgTypeBranch() ) ) {
- my_remove_branch( (ssgBranch *)k );
- branch -> removeKid ( k );
- } else if ( k -> isAKindOf ( ssgTypeLeaf() ) ) {
- branch -> removeKid ( k ) ;
- }
- }
+static void WorldCoordinate( osg::Matrix& obj_pos, double lat,
+ double lon, double elev, double hdg )
+{
+ double lon_rad = lon * SGD_DEGREES_TO_RADIANS;
+ double lat_rad = lat * SGD_DEGREES_TO_RADIANS;
+ double hdg_rad = hdg * SGD_DEGREES_TO_RADIANS;
+
+ // setup transforms
+ Point3D geod( lon_rad, lat_rad, elev );
+
+ Point3D world_pos = sgGeodToCart( geod );
+ Point3D offset = world_pos;
+
+ sgdMat4 mat;
+
+ double sin_lat = sin( lat_rad );
+ double cos_lat = cos( lat_rad );
+ double cos_lon = cos( lon_rad );
+ double sin_lon = sin( lon_rad );
+ double sin_hdg = sin( hdg_rad ) ;
+ double cos_hdg = cos( hdg_rad ) ;
+
+ mat[0][0] = cos_hdg * sin_lat * cos_lon - sin_hdg * sin_lon;
+ mat[0][1] = cos_hdg * sin_lat * sin_lon + sin_hdg * cos_lon;
+ mat[0][2] = -cos_hdg * cos_lat;
+ mat[0][3] = SG_ZERO;
+
+ mat[1][0] = -sin_hdg * sin_lat * cos_lon - cos_hdg * sin_lon;
+ mat[1][1] = -sin_hdg * sin_lat * sin_lon + cos_hdg * cos_lon;
+ mat[1][2] = sin_hdg * cos_lat;
+ mat[1][3] = SG_ZERO;
+
+ mat[2][0] = cos_lat * cos_lon;
+ mat[2][1] = cos_lat * sin_lon;
+ mat[2][2] = sin_lat;
+ mat[2][3] = SG_ZERO;
+
+ mat[3][0] = offset.x();
+ mat[3][1] = offset.y();
+ mat[3][2] = offset.z();
+ mat[3][3] = SG_ONE ;
+
+ for (unsigned i = 0; i < 4; ++i)
+ for (unsigned j = 0; j < 4; ++j)
+ obj_pos(i, j) = mat[i][j];
}
-// Clean up the memory used by this tile and delete the arrays used by
-// ssg as well as the whole ssg branch
-void FGTileEntry::free_tile() {
- int i;
- SG_LOG( SG_TERRAIN, SG_DEBUG,
- "FREEING TILE = (" << tile_bucket << ")" );
-
- SG_LOG( SG_TERRAIN, SG_DEBUG,
- " deleting " << nodes.size() << " nodes" );
- nodes.clear();
-
- // delete the ssg structures
- SG_LOG( SG_TERRAIN, SG_DEBUG,
- " deleting (leaf data) vertex, normal, and "
- << " texture coordinate arrays" );
+// Free "n" leaf elements of an ssg tree. returns the number of
+// elements freed. An empty branch node is considered a leaf. This
+// is intended to spread the load of freeing a complex tile out over
+// several frames.
+static int fgPartialFreeSSGtree( osg::Group *b, int n ) {
+ int num_deletes = b->getNumChildren();
- for ( i = 0; i < (int)vec3_ptrs.size(); ++i ) {
- delete [] vec3_ptrs[i]; //that's the correct version
- }
- vec3_ptrs.clear();
+ b->removeChildren(0, b->getNumChildren());
- for ( i = 0; i < (int)vec2_ptrs.size(); ++i ) {
- delete [] vec2_ptrs[i]; //that's the correct version
- }
- vec2_ptrs.clear();
+ return num_deletes;
+}
- for ( i = 0; i < (int)index_ptrs.size(); ++i ) {
- delete index_ptrs[i];
- }
- index_ptrs.clear();
- // delete the terrain branch
- int pcount = terra_transform->getNumParents();
- if ( pcount > 0 ) {
- // find the first parent (should only be one)
- ssgBranch *parent = terra_transform->getParent( 0 ) ;
- if( parent ) {
- // my_remove_branch( select_ptr );
- parent->removeKid( terra_transform );
- terra_transform = NULL;
- } else {
- SG_LOG( SG_TERRAIN, SG_ALERT,
- "parent pointer is NULL! Dying" );
- exit(-1);
- }
+// Clean up the memory used by this tile and delete the arrays used by
+// ssg as well as the whole ssg branch
+bool FGTileEntry::free_tile() {
+ int delete_size = 100;
+ SG_LOG( SG_TERRAIN, SG_DEBUG,
+ "FREEING TILE = (" << tile_bucket << ")" );
+
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "(start) free_tracker = " << free_tracker );
+
+ if ( !(free_tracker & NODES) ) {
+ free_tracker |= NODES;
+ } else if ( !(free_tracker & VEC_PTRS) ) {
+ free_tracker |= VEC_PTRS;
+ } else if ( !(free_tracker & TERRA_NODE) ) {
+ // delete the terrain branch (this should already have been
+ // disconnected from the scene graph)
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "FREEING terra_transform" );
+ if ( fgPartialFreeSSGtree( terra_transform.get(), delete_size ) == 0 ) {
+ terra_transform = 0;
+ free_tracker |= TERRA_NODE;
+ }
+ } else if ( !(free_tracker & LIGHTMAPS) ) {
+ free_tracker |= LIGHTMAPS;
} else {
- SG_LOG( SG_TERRAIN, SG_ALERT,
- "Parent count is zero for an ssg tile! Dying" );
- exit(-1);
+ return true;
}
- if ( lights_transform ) {
- // delete the terrain lighting branch
- pcount = lights_transform->getNumParents();
- if ( pcount > 0 ) {
- // find the first parent (should only be one)
- ssgBranch *parent = lights_transform->getParent( 0 ) ;
- if( parent ) {
- parent->removeKid( lights_transform );
- lights_transform = NULL;
- } 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);
- }
- }
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "(end) free_tracker = " << free_tracker );
+
+ // if we fall down to here, we still have work todo, return false
+ return false;
}
// Update the ssg transform node for this tile so it can be
// properly drawn relative to our (0,0,0) point
-void FGTileEntry::prep_ssg_node( const Point3D& p, float vis) {
+void FGTileEntry::prep_ssg_node(float vis) {
if ( !loaded ) return;
- SetOffset( p );
-
-// #define USE_UP_AND_COMING_PLIB_FEATURE
-#ifdef USE_UP_AND_COMING_PLIB_FEATURE
- terra_range->setRange( 0, SG_ZERO );
- terra_range->setRange( 1, vis + bounding_radius );
- lights_range->setRange( 0, SG_ZERO );
- lights_range->setRange( 1, vis * 1.5 + bounding_radius );
-#else
- float ranges[2];
- ranges[0] = SG_ZERO;
- ranges[1] = vis + bounding_radius;
- terra_range->setRanges( ranges, 2 );
- if ( lights_range ) {
- ranges[1] = vis * 1.5 + bounding_radius;
- lights_range->setRanges( ranges, 2 );
- }
-#endif
- sgVec3 sgTrans;
- sgSetVec3( sgTrans, offset.x(), offset.y(), offset.z() );
- terra_transform->setTransform( sgTrans );
-
- if ( 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.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, 10.0 + agl / 100.0 + dist / 10000 );
- } else {
- sgScaleVec3( up, 10.0 + agl / 20.0 + dist / 5000 );
- }
- sgAddVec3( sgTrans, up );
- lights_transform->setTransform( sgTrans );
-
- // 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 ) {
- lights_brightness->select(0x04);
- } else if ( sun_angle > 92 ) {
- lights_brightness->select(0x02);
- } else if ( sun_angle > 89 ) {
- lights_brightness->select(0x01);
- } else {
- lights_brightness->select(0x00);
- }
- }
+ // visibility can change from frame to frame so we update the
+ // range selector cutoff's each time.
+ float bounding_radius = terra_range->getChild(0)->getBound().radius();
+ terra_range->setRange( 0, 0, vis + bounding_radius );
}
+bool FGTileEntry::obj_load( const string& path,
+ osg::Group *geometry, bool is_base )
+{
+ bool use_random_objects =
+ fgGetBool("/sim/rendering/random-objects", true);
-ssgLeaf* FGTileEntry::gen_lights( ssgVertexArray *lights, int inc, float bright ) {
- // generate a repeatable random seed
- float *p1 = lights->get( 0 );
- unsigned int *seed = (unsigned int *)p1;
- sg_srandom( *seed );
-
- int size = lights->getNum() / inc;
-
- // Allocate ssg structure
- ssgVertexArray *vl = new ssgVertexArray( size + 1 );
- ssgNormalArray *nl = NULL;
- ssgTexCoordArray *tl = NULL;
- ssgColourArray *cl = new ssgColourArray( size + 1 );
-
- sgVec4 color;
- for ( int i = 0; i < lights->getNum(); ++i ) {
- // this loop is slightly less efficient than it otherwise
- // could be, but we want a red light to always be red, and a
- // yellow light to always be yellow, etc. so we are trying to
- // preserve the random sequence.
- float zombie = sg_random();
- if ( i % inc == 0 ) {
- vl->add( lights->get(i) );
-
- // factor = sg_random() ^ 2, range = 0 .. 1 concentrated towards 0
- float factor = sg_random();
- factor *= factor;
-
- if ( zombie > 0.5 ) {
- // 50% chance of yellowish
- sgSetVec4( color, 0.9, 0.9, 0.3, bright - factor * 0.2 );
- } else if ( zombie > 0.15 ) {
- // 35% chance of whitish
- sgSetVec4( color, 0.9, 0.9, 0.8, bright - factor * 0.2 );
- } else if ( zombie > 0.05 ) {
- // 10% chance of orangish
- sgSetVec4( color, 0.9, 0.6, 0.2, bright - factor * 0.2 );
- } else {
- // 5% chance of redish
- sgSetVec4( color, 0.9, 0.2, 0.2, bright - factor * 0.2 );
- }
- cl->add( color );
- }
- }
-
- // create ssg leaf
- ssgLeaf *leaf =
- new ssgVtxTable ( GL_POINTS, vl, nl, tl, cl );
-
- // assign state
- FGNewMat *newmat = material_lib.find( "LIGHTS" );
- leaf->setState( newmat->get_state() );
+ // try loading binary format
+ osg::Node* node = SGLoadBTG(path, globals->get_matlib(), is_base, use_random_objects);
+ if (node)
+ geometry->addChild(node);
- return leaf;
+ return node;
}
-ssgBranch*
-FGTileEntry::obj_load( const std::string& path,
- ssgVertexArray* lights, bool is_base )
-{
- ssgBranch* result = 0;
+typedef enum {
+ OBJECT,
+ OBJECT_SHARED,
+ OBJECT_STATIC,
+ OBJECT_SIGN,
+ OBJECT_RUNWAY_SIGN
+} object_type;
- // try loading binary format
- result = fgBinObjLoad( path, this, lights, is_base );
- if ( result == NULL ) {
- // next try the older ascii format
- result = fgAsciiObjLoad( path, this, lights, is_base );
- if ( result == NULL ) {
- // default to an ocean tile
- result = fgGenTile( path, this );
- }
- }
- return result;
-}
+// storage class for deferred object processing in FGTileEntry::load()
+struct Object {
+ Object(object_type t, const string& token, const SGPath& p, istream& in)
+ : type(t), path(p)
+ {
+ in >> name;
+ if (type != OBJECT)
+ in >> lon >> lat >> elev >> hdg;
+ in >> ::skipeol;
+
+ if (type == OBJECT)
+ SG_LOG(SG_TERRAIN, SG_INFO, " " << token << " " << name);
+ else
+ SG_LOG(SG_TERRAIN, SG_INFO, " " << token << " " << name << " lon=" <<
+ lon << " lat=" << lat << " elev=" << elev << " hdg=" << hdg);
+ }
+ object_type type;
+ string name;
+ SGPath path;
+ double lon, lat, elev, hdg;
+};
void
-FGTileEntry::load( const SGPath& base, bool is_base )
+FGTileEntry::load( const string_list &path_list, bool is_base )
{
- // a cheesy hack (to be fixed later)
- extern ssgBranch *terrain;
- extern ssgBranch *ground;
+ bool found_tile_base = false;
+
+ SGPath object_base;
+ vector<const Object*> objects;
string index_str = tile_bucket.gen_index_str();
+ SG_LOG( SG_TERRAIN, SG_INFO, "Loading tile " << index_str );
+
+ // scan and parse all files and store information
+ for (unsigned int i = 0; i < path_list.size(); i++) {
+ // If we found a terrain tile in Terrain/, we have to process the
+ // Objects/ dir in the same group, too, before we can stop scanning.
+ // FGGlobals::set_fg_scenery() inserts an empty string to path_list
+ // as marker.
+ if (path_list[i].empty()) {
+ if (found_tile_base)
+ break;
+ else
+ continue;
+ }
+
+ bool has_base = false;
+
+ SGPath tile_path = path_list[i];
+ tile_path.append( tile_bucket.gen_base_path() );
+
+ SGPath basename = tile_path;
+ basename.append( index_str );
+
+ SG_LOG( SG_TERRAIN, SG_INFO, " Trying " << basename.str() );
+
+
+ // Check for master .stg (scene terra gear) file
+ SGPath stg_name = basename;
+ stg_name.concat( ".stg" );
+
+ sg_gzifstream in( stg_name.str() );
+ if ( !in.is_open() )
+ continue;
+
+ while ( ! in.eof() ) {
+ string token;
+ in >> token;
+
+ if ( token.empty() || token[0] == '#' ) {
+ in >> ::skipeol;
+ continue;
+ }
+ // Load only once (first found)
+ if ( token == "OBJECT_BASE" ) {
+ string name;
+ in >> name >> ::skipws;
+ SG_LOG( SG_TERRAIN, SG_INFO, " " << token << " " << name );
+
+ if (!found_tile_base) {
+ found_tile_base = true;
+ has_base = true;
+
+ object_base = tile_path;
+ object_base.append(name);
+
+ } else
+ SG_LOG(SG_TERRAIN, SG_INFO, " (skipped)");
+
+ // Load only if base is not in another file
+ } else if ( token == "OBJECT" ) {
+ if (!found_tile_base || has_base)
+ objects.push_back(new Object(OBJECT, token, tile_path, in));
+ else {
+ string name;
+ in >> name >> ::skipeol;
+ SG_LOG(SG_TERRAIN, SG_INFO, " " << token << " "
+ << name << " (skipped)");
+ }
+
+ // Always OK to load
+ } else if ( token == "OBJECT_STATIC" ) {
+ objects.push_back(new Object(OBJECT_STATIC, token, tile_path, in));
+
+ } else if ( token == "OBJECT_SHARED" ) {
+ objects.push_back(new Object(OBJECT_SHARED, token, tile_path, in));
+
+ } else if ( token == "OBJECT_SIGN" ) {
+ objects.push_back(new Object(OBJECT_SIGN, token, tile_path, in));
+
+ } else if ( token == "OBJECT_RUNWAY_SIGN" ) {
+ objects.push_back(new Object(OBJECT_RUNWAY_SIGN, token, tile_path, in));
+
+ } else {
+ SG_LOG( SG_TERRAIN, SG_DEBUG,
+ "Unknown token '" << token << "' in " << stg_name.str() );
+ in >> ::skipws;
+ }
+ }
+ }
- SGPath tile_path = base;
- // Generate name of file to load.
- tile_path.append( tile_bucket.gen_base_path() );
- SGPath basename = tile_path;
- basename.append( index_str );
- string path = basename.str();
- SG_LOG( SG_TERRAIN, SG_DEBUG, "Loading tile " << path );
+ // obj_load() will generate ground lighting for us ...
+ osg::Group* new_tile = new osg::Group;
- // fgObjLoad will generate ground lighting for us ...
- ssgVertexArray *light_pts = new ssgVertexArray( 100 );
+ if (found_tile_base) {
+ // load tile if found ...
+ obj_load( object_base.str(), new_tile, true );
- ssgBranch* new_tile = obj_load( path, light_pts, is_base );
- if ( new_tile != NULL ) {
- terra_range->addKid( new_tile );
+ } else {
+ // ... or generate an ocean tile on the fly
+ SG_LOG(SG_TERRAIN, SG_INFO, " Generating ocean tile");
+ if ( !SGGenTile( path_list[0], tile_bucket,
+ globals->get_matlib(), new_tile ) ) {
+ SG_LOG( SG_TERRAIN, SG_ALERT,
+ "Warning: failed to generate ocean tile!" );
+ }
}
- // load custom objects
- SG_LOG( SG_TERRAIN, SG_DEBUG, "CUSTOM OBJECTS" );
- SGPath index_path = tile_path;
- index_path.append( index_str );
- index_path.concat( ".ind" );
+ // now that we have a valid center, process all the objects
+ for (unsigned int j = 0; j < objects.size(); j++) {
+ const Object *obj = objects[j];
+
+ if (obj->type == OBJECT) {
+ SGPath custom_path = obj->path;
+ custom_path.append( obj->name );
+ obj_load( custom_path.str(), new_tile, false );
+
+ } else if (obj->type == OBJECT_SHARED || obj->type == OBJECT_STATIC) {
+ // object loading is deferred to main render thread,
+ // but lets figure out the paths right now.
+ SGPath custom_path;
+ if ( obj->type == OBJECT_STATIC ) {
+ custom_path = obj->path;
+ } else {
+ custom_path = globals->get_fg_root();
+ }
+ custom_path.append( obj->name );
+
+ osg::Matrix obj_pos;
+ WorldCoordinate( obj_pos, obj->lat, obj->lon, obj->elev, obj->hdg );
+
+ osg::MatrixTransform *obj_trans = new osg::MatrixTransform;
+ obj_trans->setMatrix( obj_pos );
+
+ // wire as much of the scene graph together as we can
+ new_tile->addChild( obj_trans );
+ pending_models++;
+
+ // push an entry onto the model load queue
+ FGDeferredModel *dm
+ = new FGDeferredModel( custom_path.str(),
+ obj->path.str(),
+ tile_bucket,
+ this, obj_trans,
+ obj->type == OBJECT_SHARED );
+ FGTileMgr::model_ready( dm );
+
+
+ } else if (obj->type == OBJECT_SIGN || obj->type == OBJECT_RUNWAY_SIGN) {
+ // load the object itself
+ SGPath custom_path = obj->path;
+ custom_path.append( obj->name );
+
+ osg::Matrix obj_pos;
+ WorldCoordinate( obj_pos, obj->lat, obj->lon, obj->elev, obj->hdg );
+
+ osg::MatrixTransform *obj_trans = new osg::MatrixTransform;
+ obj_trans->setMatrix( obj_pos );
+
+ osg::Node *custom_obj = 0;
+ if (obj->type == OBJECT_SIGN)
+ custom_obj = SGMakeSign(globals->get_matlib(), custom_path.str(), obj->name);
+ else
+ custom_obj = SGMakeRunwaySign(globals->get_matlib(), custom_path.str(), obj->name);
+
+ // wire the pieces together
+ if ( custom_obj != NULL ) {
+ obj_trans -> addChild( custom_obj );
+ }
+ new_tile->addChild( obj_trans );
+
+ }
+ delete obj;
+ }
- SG_LOG( SG_TERRAIN, SG_DEBUG, "Looking in " << index_path.str() );
+ terra_range->addChild( new_tile );
+ terra_transform->addChild( terra_range.get() );
+}
- sg_gzifstream in( index_path.str() );
+void
+FGTileEntry::add_ssg_nodes( osg::Group *terrain_branch )
+{
+ // bump up the ref count so we can remove this later without
+ // having ssg try to free the memory.
+ terrain_branch->addChild( terra_transform.get() );
- if ( in.is_open() ) {
- string token, name;
+ SG_LOG( SG_TERRAIN, SG_DEBUG,
+ "connected a tile into scene graph. terra_transform = "
+ << terra_transform.get() );
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "num parents now = "
+ << terra_transform->getNumParents() );
- while ( ! in.eof() ) {
- in >> token >> name >> ::skipws;
- SG_LOG( SG_TERRAIN, SG_DEBUG, "token = " << token
- << " name = " << name );
+ loaded = true;
+}
- 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 );
- }
- }
- }
- terra_transform->addKid( terra_range );
-
- // calculate initial tile offset
- SetOffset( scenery.center );
- sgCoord sgcoord;
- sgSetCoord( &sgcoord,
- offset.x(), offset.y(), offset.z(),
- 0.0, 0.0, 0.0 );
- terra_transform->setTransform( &sgcoord );
- terrain->addKid( terra_transform );
-
- lights_transform = NULL;
- lights_range = NULL;
- /* uncomment this section for testing ground lights */
- if ( light_pts->getNum() ) {
- SG_LOG( SG_TERRAIN, SG_DEBUG, "generating lights" );
- lights_transform = new ssgTransform;
- lights_range = new ssgRangeSelector;
- lights_brightness = new ssgSelector;
- ssgLeaf *lights;
-
- lights = gen_lights( light_pts, 4, 0.7 );
- lights_brightness->addKid( lights );
-
- lights = gen_lights( light_pts, 2, 0.85 );
- lights_brightness->addKid( lights );
-
- lights = gen_lights( light_pts, 1, 1.0 );
- lights_brightness->addKid( lights );
-
- lights_range->addKid( lights_brightness );
- lights_transform->addKid( lights_range );
- lights_transform->setTransform( &sgcoord );
- ground->addKid( lights_transform );
- }
- /* end of ground light section */
+void
+FGTileEntry::disconnect_ssg_nodes()
+{
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "disconnecting ssg nodes" );
- loaded = true;
+ if ( ! loaded ) {
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "removing a not-fully loaded tile!" );
+ } else {
+ SG_LOG( SG_TERRAIN, SG_DEBUG, "removing a fully loaded tile! terra_transform = " << terra_transform.get() );
+ }
+
+ // find the terrain branch parent
+ int pcount = terra_transform->getNumParents();
+ if ( pcount > 0 ) {
+ // find the first parent (should only be one)
+ osg::Group *parent = terra_transform->getParent( 0 ) ;
+ if( parent ) {
+ // disconnect the tile (we previously ref()'d it so it
+ // won't get freed now)
+ parent->removeChild( terra_transform.get() );
+ } 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 tile! Dying" );
+ exit(-1);
+ }
}
projects / flightgear.git / blobdiff