1 // fragment.hxx -- routines to handle "atomic" display objects
3 // Written by Curtis Olson, started August 1998.
5 // Copyright (C) 1998 Curtis L. Olson - curt@me.umn.edu
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.
22 // (Log is kept at end of this file)
30 # error This library requires C++
44 #if defined ( __sun__ )
45 extern "C" void *memmove(void *, const void *, size_t);
46 extern "C" void *memset(void *, int, size_t);
49 #include <list> // STL list
51 #include <Bucket/bucketutils.h>
52 #include <Include/fg_types.h>
53 #include <Math/mat3.h>
55 #ifdef NEEDNAMESPACESTD
60 // Maximum nodes per tile
61 #define MAX_NODES 2000
64 // Forward declarations
75 fgFACE( const fgFACE & image );
76 bool operator < ( const fgFACE & rhs );
77 bool operator == ( const fgFACE & rhs );
81 // Object fragment data class
85 // culling data for this object fragment (fine grain culling)
87 double bounding_radius;
89 // variable offset data for this object fragment for this frame
90 // fgCartesianPoint3d tile_offset;
92 // saved transformation matrix for this fragment (used by renderer)
93 // GLfloat matrix[16];
95 // tile_ptr & material_ptr are set so that when we traverse the
96 // list of fragments we can quickly reference back the tile or
97 // material property this fragment is assigned to.
99 // material property pointer
100 fgMATERIAL *material_ptr;
105 // OpenGL display list for fragment data
108 // face list (this indexes into the master tile vertex list)
109 list < fgFACE > faces;
111 // number of faces in this fragment
114 // Add a face to the face list
115 void add_face(int n1, int n2, int n3);
117 // test if line intesects with this fragment. p0 and p1 are the
118 // two line end points of the line. If side_flag is true, check
119 // to see that end points are on opposite sides of face. Returns
120 // 1 if it intersection found, 0 otherwise. If it intesects,
121 // result is the point of intersection
122 int intersect( fgPoint3d *end0, fgPoint3d *end1, int side_flag,
127 fgFRAGMENT ( const fgFRAGMENT &image );
133 fgFRAGMENT & operator = ( const fgFRAGMENT & rhs );
134 bool operator == ( const fgFRAGMENT & rhs );
135 bool operator < ( const fgFRAGMENT & rhs );
139 #endif // _FRAGMENT_HXX
143 // Revision 1.1 1998/08/25 16:51:23 curt
144 // Moved from ../Scenery