--- /dev/null
+// tile.cxx -- routines to handle a scenery tile
+//
+// Written by Curtis Olson, started May 1998.
+//
+// Copyright (C) 1998, 1999 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
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// 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.
+//
+// $Id$
+
+
+#include <Include/compiler.h>
+
+#ifdef FG_MATH_EXCEPTION_CLASH
+# include <math.h>
+#endif
+
+#include STL_FUNCTIONAL
+#include STL_ALGORITHM
+
+#include <Debug/logstream.hxx>
+#include <Bucket/newbucket.hxx>
+
+#include "tileentry.hxx"
+
+FG_USING_STD(for_each);
+FG_USING_STD(mem_fun_ref);
+
+
+// Constructor
+FGTileEntry::FGTileEntry ( void )
+ : ncount(0),
+ used(false)
+{
+ nodes.clear();
+}
+
+
+// Destructor
+FGTileEntry::~FGTileEntry ( void ) {
+ // cout << "nodes = " << nodes.size() << endl;;
+ // delete[] nodes;
+}
+
+
+// Step through the fragment list, deleting the display list, then
+// the fragment, until the list is empty.
+void
+FGTileEntry::release_fragments()
+{
+ FG_LOG( FG_TERRAIN, FG_DEBUG,
+ "FREEING TILE = (" << tile_bucket << ")" );
+ for_each( begin(), end(),
+ mem_fun_ref( &fgFRAGMENT::deleteDisplayList ));
+ fragment_list.erase( begin(), end() );
+ used = false;
+}
+
+
--- /dev/null
+// tileentry.hxx -- routines to handle an individual scenery tile
+//
+// Written by Curtis Olson, started May 1998.
+//
+// Copyright (C) 1998, 1999 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
+// published by the Free Software Foundation; either version 2 of the
+// License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful, but
+// WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// General Public License for more details.
+//
+// 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.
+//
+// $Id$
+
+
+#ifndef _TILEENTRY_HXX
+#define _TILEENTRY_HXX
+
+
+#ifndef __cplusplus
+# error This library requires C++
+#endif
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#ifdef HAVE_WINDOWS_H
+# include <windows.h>
+#endif
+
+#include <GL/glut.h>
+#include <XGL/xgl.h>
+
+#include <Include/compiler.h>
+
+#include <vector>
+#include STL_STRING
+
+#include <plib/sg.h>
+
+#include <Bucket/newbucket.hxx>
+#include <Math/mat3.h>
+#include <Math/point3d.hxx>
+#include <Objects/fragment.hxx>
+
+#ifdef FG_HAVE_NATIVE_SGI_COMPILERS
+#include <strings.h>
+#endif
+
+FG_USING_STD(string);
+FG_USING_STD(vector);
+
+
+typedef vector < Point3D > point_list;
+typedef point_list::iterator point_list_iterator;
+typedef point_list::const_iterator const_point_list_iterator;
+
+
+// Scenery tile class
+class FGTileEntry {
+
+public:
+
+ typedef vector < fgFRAGMENT > container;
+ typedef container::iterator FragmentIterator;
+ typedef container::const_iterator FragmentConstIterator;
+
+public:
+ // node list (the per fragment face lists reference this node list)
+ point_list nodes;
+ int ncount;
+
+ // global tile culling data
+ Point3D center;
+ double bounding_radius;
+ Point3D offset;
+
+ // model view matrix for this tile
+ GLfloat model_view[16];
+
+ // this tile's official location in the world
+ FGBucket tile_bucket;
+
+ // the tile cache will mark here if the tile is being used
+ bool used;
+
+ container fragment_list;
+
+public:
+
+ // Constructor
+ FGTileEntry ( void );
+
+ // Destructor
+ ~FGTileEntry ( void );
+
+ FragmentIterator begin() { return fragment_list.begin(); }
+ FragmentConstIterator begin() const { return fragment_list.begin(); }
+
+ FragmentIterator end() { return fragment_list.end(); }
+ FragmentConstIterator end() const { return fragment_list.end(); }
+
+ void add_fragment( fgFRAGMENT& frag ) {
+ frag.tile_ptr = this;
+ fragment_list.push_back( frag );
+ }
+
+ size_t num_fragments() const {
+ return fragment_list.size();
+ }
+
+ // Step through the fragment list, deleting the display list, then
+ // the fragment, until the list is empty.
+ void release_fragments();
+
+ // Calculate this tile's offset
+ void SetOffset( const Point3D& off)
+ {
+ offset = center - off;
+ }
+
+ // Return this tile's offset
+ inline Point3D get_offset( void ) const { return offset; }
+
+ // Calculate the model_view transformation matrix for this tile
+ inline void update_view_matrix(GLfloat *MODEL_VIEW)
+ {
+
+#if defined( USE_MEM ) || defined( WIN32 )
+ memcpy( model_view, MODEL_VIEW, 16*sizeof(GLfloat) );
+#else
+ bcopy( MODEL_VIEW, model_view, 16*sizeof(GLfloat) );
+#endif
+
+ // This is equivalent to doing a glTranslatef(x, y, z);
+ model_view[12] += (model_view[0]*offset.x() +
+ model_view[4]*offset.y() +
+ model_view[8]*offset.z());
+ model_view[13] += (model_view[1]*offset.x() +
+ model_view[5]*offset.y() +
+ model_view[9]*offset.z());
+ model_view[14] += (model_view[2]*offset.x() +
+ model_view[6]*offset.y() +
+ model_view[10]*offset.z() );
+ // m[15] += (m[3]*x + m[7]*y + m[11]*z);
+ // m[3] m7[] m[11] are 0.0 see LookAt() in views.cxx
+ // so m[15] is unchanged
+ }
+
+};
+
+
+typedef vector < FGTileEntry > tile_list;
+typedef tile_list::iterator tile_list_iterator;
+typedef tile_list::const_iterator const_tile_list_iterator;
+
+
+#endif // _TILEENTRY_HXX
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