1 // tile.cxx -- routines to handle a scenery tile
3 // Written by Curtis Olson, started May 1998.
5 // Copyright (C) 1998, 1999 Curtis L. Olson - curt@flightgear.org
7 // This program is free software; you can redistribute it and/or
8 // modify it under the terms of the GNU General Public License as
9 // published by the Free Software Foundation; either version 2 of the
10 // License, or (at your option) any later version.
12 // This program is distributed in the hope that it will be useful, but
13 // WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 // General Public License for more details.
17 // You should have received a copy of the GNU General Public License
18 // along with this program; if not, write to the Free Software
19 // Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
24 #include <Include/compiler.h>
26 #ifdef FG_MATH_EXCEPTION_CLASH
30 #include STL_FUNCTIONAL
31 #include STL_ALGORITHM
33 #include <Debug/logstream.hxx>
34 #include <Bucket/newbucket.hxx>
36 #include "tileentry.hxx"
38 FG_USING_STD(for_each);
39 FG_USING_STD(mem_fun_ref);
43 FGTileEntry::FGTileEntry ( void )
55 FGTileEntry::~FGTileEntry ( void ) {
56 // cout << "nodes = " << nodes.size() << endl;;
61 // Step through the fragment list, deleting the display list, then the
62 // fragment, until the list is empty. Also delete the arrays used by
63 // ssg as well as the whole ssg branch
65 FGTileEntry::free_tile()
67 FG_LOG( FG_TERRAIN, FG_DEBUG,
68 "FREEING TILE = (" << tile_bucket << ")" );
73 // delete fragment list and node list
74 FG_LOG( FG_TERRAIN, FG_DEBUG,
75 " deleting " << fragment_list.size() << " fragments" );
76 fragment_list.clear();
77 FG_LOG( FG_TERRAIN, FG_DEBUG,
78 " deleting " << nodes.size() << " nodes" );
81 // delete the ssg structures
82 FG_LOG( FG_TERRAIN, FG_DEBUG,
83 " deleting vertex, normal, and texture coordinate arrays" );
84 FG_LOG( FG_TERRAIN, FG_DEBUG,
85 " deleting vertex array" );
86 if ( vtlist != NULL ) {
89 FG_LOG( FG_TERRAIN, FG_DEBUG,
90 " deleting normal array" );
91 if ( vnlist != NULL ) {
94 FG_LOG( FG_TERRAIN, FG_DEBUG,
95 " deleting texture coordinate array" );
96 if ( tclist != NULL ) {
100 // delete the ssg branch
102 // make sure we have a sane number of parents
103 int pcount = select_ptr->getNumParents();
105 // find the first parent (should only be one)
106 ssgBranch *parent = select_ptr->getParent( 0 ) ;
107 // find the number of kids this parent has
108 int kcount = parent->getNumKids();
109 // find the kid that matches our original select_ptr
110 bool found_kid = false;
111 for ( int i = 0; i < kcount; ++i ) {
112 ssgEntity *kid = parent->getKid( i );
113 if ( kid == select_ptr ) {
114 FG_LOG( FG_TERRAIN, FG_DEBUG,
115 "Found a kid to delete " << kid);
117 parent->removeKid( i );
121 FG_LOG( FG_TERRAIN, FG_ALERT,
122 "Couldn't find the kid to delete! Dying" );
126 FG_LOG( FG_TERRAIN, FG_ALERT,
127 "Parent count is zero for an ssg tile! Dying" );
133 // when a tile is still in the cache, but not in the immediate draw
134 // list, it can still remain in the scene graph, but we use a range
135 // selector to disable it from ever being drawn.
137 FGTileEntry::ssg_disable() {
138 // cout << "TILE STATE = " << state << endl;
139 if ( state == Scheduled_for_use ) {
140 state = Scheduled_for_cache;
141 } else if ( state == Scheduled_for_cache ) {
143 } else if ( (state == Loaded) || (state == Cached) ) {
145 // cout << "DISABLING SSG NODE" << endl;
146 select_ptr->select(0);
148 FG_LOG( FG_TERRAIN, FG_ALERT,
149 "Trying to disable an unused tile! Dying" );
152 // cout << "TILE STATE = " << state << endl;