1 /*
2 ** License Applicability. Except to the extent portions of this file are
3 ** made subject to an alternative license as permitted in the SGI Free
4 ** Software License B, Version 1.1 (the "License"), the contents of this
5 ** file are subject only to the provisions of the License. You may not use
6 ** this file except in compliance with the License. You may obtain a copy
7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
9 **
10 ** http://oss.sgi.com/projects/FreeB
11 **
12 ** Note that, as provided in the License, the Software is distributed on an
13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
17 **
18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
21 ** Copyright in any portions created by third parties is as indicated
22 ** elsewhere herein. All Rights Reserved.
23 **
24 ** Additional Notice Provisions: The application programming interfaces
25 ** established by SGI in conjunction with the Original Code are The
26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
31 ** published by SGI, but has not been independently verified as being
32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
33 */
34 
35 /*
36  * maplist.c++
37  *
38  */
39 
40 //#include "glimports.h"
41 //#include "mystdio.h"
42 //#include "myassert.h"
43 //#include "mymath.h"
44 //#include "nurbsconsts.h"
45 #include "maplist.h"
46 #include "mapdesc.h"
47 
48 Maplist::Maplist( Backend& b )
49     : mapdescPool( sizeof( Mapdesc ), 10, "mapdesc pool" ),
50       backend( b )
51 {
52     maps = 0; lastmap = &maps;
53 }
54 
55 void
56 Maplist::initialize( void )
57 {
58     freeMaps();
59     define( N_P2D, 0, 2 );
60     define( N_P2DR, 1, 3 );
61 }
62 
63 void
64 Maplist::add( long type, int israt, int ncoords )
65 {
66     *lastmap = new(mapdescPool) Mapdesc( type, israt, ncoords, backend );
67     lastmap = &((*lastmap)->next);
68 }
69 
70 void
71 Maplist::define( long type, int israt, int ncoords )
72 {
73 #ifndef NDEBUG // to avoid warning
74     Mapdesc *m = locate( type );
75     assert( m == NULL || ( m->isrational == israt && m->ncoords == ncoords ) );
76 #endif
77     add( type, israt, ncoords );
78 }
79 
80 void
81 Maplist::remove( Mapdesc *m )
82 {
83     for( Mapdesc **curmap = &maps; *curmap; curmap = &((*curmap)->next) ) {
84 	if( *curmap == m ) {
85 	    *curmap = m->next;
86 	    m->deleteMe( mapdescPool );
87 	    return;
88 	}
89     }
90     abort();
91 }
92 
93 void
94 Maplist::freeMaps( void )
95 {
96     mapdescPool.clear();
97     maps = 0;
98     lastmap = &maps;
99 }
100 
101 Mapdesc *
102 Maplist::find( long type )
103 {
104     Mapdesc *val = locate( type );
105     assert( val != 0 );
106     return val;
107 }
108 
109 Mapdesc *
110 Maplist::locate( long type )
111 {
112     Mapdesc *m;
113     for( m = maps; m; m = m->next )
114 	if( m->getType() == type ) break;
115     return m;
116 }
117