- adjusted for no-value constructor for FGPanel

[flightgear.git] / src / Scenery / tileentry.hxx

diff --git a/src/Scenery/tileentry.hxx b/src/Scenery/tileentry.hxx
index dbbf8a42e135b41787753451ac4eb228993d8cde..9206d0be4b53a2914c5e6d51928d48a3a53cc2a9 100644 (file)
--- a/src/Scenery/tileentry.hxx
+++ b/src/Scenery/tileentry.hxx
@@ -2,7 +2,7 @@
 //
 // 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
@@ -38,7 +38,7 @@
 #endif
 
 #include <GL/glut.h>
-#include <simgear/xgl/xgl.h>
+#include <GL/gl.h>
 
 #include <simgear/compiler.h>
 
@@ -49,21 +49,57 @@
 
 #include <simgear/bucket/newbucket.hxx>
 #include <simgear/math/point3d.hxx>
+#include <simgear/misc/sg_path.hxx>
 
 #if defined( sgi )
 #include <strings.h>
 #endif
 
-FG_USING_STD(string);
-FG_USING_STD(vector);
+SG_USING_STD(string);
+SG_USING_STD(vector);
 
 
 typedef vector < Point3D > point_list;
 typedef point_list::iterator point_list_iterator;
 typedef point_list::const_iterator const_point_list_iterator;
 
+class FGTileEntry;
 
-// Scenery tile class
+
+/**
+ * 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.
+ */
 class FGTileEntry {
 
 public:
@@ -90,6 +126,8 @@ public:
     free_vec2_list vec2_ptrs;
     free_index_list index_ptrs;
 
+private:
+
     // ssg tree structure for this tile is as follows:
     // ssgRoot(scene)
     //     - ssgBranch(terrain)
@@ -113,14 +151,38 @@ public:
     // want based on lighting conditions.
     ssgSelector *lights_brightness;
 
+    /**
+     * 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 );
+
+    ssgLeaf* gen_lights( ssgVertexArray *lights, int inc, float bright );
+
 public:
 
     // Constructor
-    FGTileEntry();
+    FGTileEntry( const SGBucket& b );
 
     // 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();
@@ -137,6 +199,45 @@ public:
     // Update the ssg transform node for this tile so it can be
     // properly drawn relative to our (0,0,0) point
     void prep_ssg_node( const Point3D& p, float vis);
+
+    /**
+     * 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 */
+    void load( const SGPath& base, bool is_base );
+
+    /**
+     * Return true if the tile entry is loaded, otherwise return false
+     * indicating that the loading thread is still working on this.
+     */
+    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();
 };