//
// Written by Curtis Olson, started May 1998.
//
-// Copyright (C) 1998, 1999 Curtis L. Olson - curt@flightgear.org
+// Copyright (C) 1998 - 2001 Curtis L. Olson - curt@flightgear.org
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License as
#endif
#include <GL/glut.h>
-#include <simgear/xgl/xgl.h>
+#include <GL/gl.h>
#include <simgear/compiler.h>
#include <simgear/bucket/newbucket.hxx>
#include <simgear/math/point3d.hxx>
+#include <simgear/misc/sg_path.hxx>
#if defined( sgi )
#include <strings.h>
typedef point_list::iterator point_list_iterator;
typedef point_list::const_iterator const_point_list_iterator;
+class FGTileEntry;
+
+
+/**
+ * A class to hold deferred model loading info
+ */
+class FGDeferredModel {
+
+private:
+
+ string model_path;
+ string texture_path;
+ FGTileEntry *tile;
+ ssgTransform *obj_trans;
+
+public:
+
+ inline FGDeferredModel() { }
+ inline FGDeferredModel( const string mp, const string tp,
+ FGTileEntry *t, ssgTransform *ot )
+ {
+ model_path = mp;
+ texture_path = tp;
+ tile = t;
+ obj_trans = ot;
+ }
+ inline ~FGDeferredModel() { }
+ inline string get_model_path() const { return model_path; }
+ inline string get_texture_path() const { return texture_path; }
+ inline FGTileEntry *get_tile() const { return tile; }
+ inline ssgTransform *get_obj_trans() const { return obj_trans; }
+};
+
/**
* A class to encapsulate everything we need to know about a scenery tile.
ssgSelector *lights_brightness;
/**
- * Indicates this tile has been loaded from a file.
- * Note that this may be set asynchronously by another thread.
+ * Indicates this tile has been loaded from a file and connected
+ * into the scene graph. Note that this may be set asynchronously
+ * by another thread.
*/
volatile bool loaded;
+ /**
+ * Count of pending models to load for this tile. This tile
+ * cannot be removed until this number reaches zero (i.e. no
+ * pending models to load for this tile.)
+ */
+ volatile int pending_models;
+
ssgBranch* obj_load( const std::string& path,
ssgVertexArray* lights, bool is_base );
// Destructor
~FGTileEntry();
+#ifdef WISH_PLIB_WAS_THREADED // but it isn't
+ // Schedule tile to be freed/removed
+ void sched_removal();
+#endif
+
// Clean up the memory used by this tile and delete the arrays
// used by ssg as well as the whole ssg branch
void free_tile();
* Load tile data from a file.
* @param base name of directory containing tile data file.
* @param is_base is this a base terrain object for which we should generate
- * random ground light points
- */
+ * random ground light points */
void load( const SGPath& base, bool is_base );
/**
*/
inline bool is_loaded() const { return loaded; }
+ /**
+ * decrement the pending models count
+ */
+ inline void dec_pending_models() { pending_models--; }
+
+ /**
+ * return the number of remaining pending models for this tile
+ */
+ inline int get_pending_models() const { return pending_models; }
+
/**
* Return the "bucket" for this tile
*/
inline SGBucket get_tile_bucket() const { return tile_bucket; }
+ /**
+ * Add terrain mesh and ground lighting to scene graph.
+ */
+ void add_ssg_nodes( ssgBranch* terrain, ssgBranch* ground );
+
+ /**
+ * disconnect terrain mesh and ground lighting nodes from scene
+ * graph for this tile.
+ */
+ void disconnect_ssg_nodes();
};