maplist.cc revision f220fa62 
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
48Maplist::Maplist( Backend& b )
49    : mapdescPool( sizeof( Mapdesc ), 10, "mapdesc pool" ),
50      backend( b )
51{
52    maps = 0; lastmap = &maps;
53}
54
55void
56Maplist::initialize( void )
57{
58    freeMaps();
59    define( N_P2D, 0, 2 );
60    define( N_P2DR, 1, 3 );
61}
62
63void
64Maplist::add( long type, int israt, int ncoords )
65{
66    *lastmap = new(mapdescPool) Mapdesc( type, israt, ncoords, backend );
67    lastmap = &((*lastmap)->next);
68}
69
70void
71Maplist::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
80void
81Maplist::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
93void
94Maplist::freeMaps( void )
95{
96    mapdescPool.clear();
97    maps = 0;
98    lastmap = &maps;
99}
100
101Mapdesc *
102Maplist::find( long type )
103{
104    Mapdesc *val = locate( type );
105    assert( val != 0 );
106    return val;
107}
108
109Mapdesc *
110Maplist::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