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b86e330957
This copies the files for the GLU tesselator from Mesa. The Mesa code is based on the original SGI code and is released under a BSD license. The memalloc.h header has been replaced with one that forces the code to use g_malloc and friends. The rest of the files are not altered from the original so it should be possible to later upgrade the files by simply overwriting them. There is a tesselator.h header which is expected to be included by rest of Cogl to use the tesselator. This contains a trimmed down version of glu.h that only includes parts that pertain to the tesselator. There is also a stub glu.h in the GL directory which is just provided so that the tesselator code can include <GL/gl.h> without depending on the system header. It just redirects to tesselator.h
112 lines
3.1 KiB
C
112 lines
3.1 KiB
C
/*
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* SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
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* Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice including the dates of first publication and
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* either this permission notice or a reference to
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* http://oss.sgi.com/projects/FreeB/
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* shall be included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of Silicon Graphics, Inc.
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* shall not be used in advertising or otherwise to promote the sale, use or
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* other dealings in this Software without prior written authorization from
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* Silicon Graphics, Inc.
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*/
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/*
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** Author: Eric Veach, July 1994.
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**
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*/
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#include <stddef.h>
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#include "dict-list.h"
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#include "memalloc.h"
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/* really __gl_dictListNewDict */
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Dict *dictNewDict( void *frame,
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int (*leq)(void *frame, DictKey key1, DictKey key2) )
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{
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Dict *dict = (Dict *) memAlloc( sizeof( Dict ));
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DictNode *head;
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if (dict == NULL) return NULL;
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head = &dict->head;
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head->key = NULL;
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head->next = head;
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head->prev = head;
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dict->frame = frame;
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dict->leq = leq;
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return dict;
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}
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/* really __gl_dictListDeleteDict */
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void dictDeleteDict( Dict *dict )
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{
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DictNode *node, *next;
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for( node = dict->head.next; node != &dict->head; node = next ) {
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next = node->next;
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memFree( node );
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}
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memFree( dict );
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}
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/* really __gl_dictListInsertBefore */
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DictNode *dictInsertBefore( Dict *dict, DictNode *node, DictKey key )
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{
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DictNode *newNode;
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do {
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node = node->prev;
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} while( node->key != NULL && ! (*dict->leq)(dict->frame, node->key, key));
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newNode = (DictNode *) memAlloc( sizeof( DictNode ));
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if (newNode == NULL) return NULL;
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newNode->key = key;
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newNode->next = node->next;
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node->next->prev = newNode;
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newNode->prev = node;
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node->next = newNode;
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return newNode;
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}
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/* really __gl_dictListDelete */
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void dictDelete( Dict *dict, DictNode *node ) /*ARGSUSED*/
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{
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node->next->prev = node->prev;
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node->prev->next = node->next;
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memFree( node );
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}
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/* really __gl_dictListSearch */
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DictNode *dictSearch( Dict *dict, DictKey key )
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{
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DictNode *node = &dict->head;
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do {
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node = node->next;
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} while( node->key != NULL && ! (*dict->leq)(dict->frame, key, node->key));
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return node;
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}
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