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- /* $Id: tess_heap.h,v 1.7.2.3 1999/11/29 18:16:12 gareth Exp $ */
-
- /*
- * Mesa 3-D graphics library
- * Version: 3.1
- *
- * Copyright (C) 1999 Brian Paul All Rights Reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
- * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
- */
-
- /*****************************************************************************
- *
- * GLU 1.3 Polygon Tessellation - Implementation of priority queue
- *
- * Gareth Hughes <garethh@bell-labs.com>, April 1999
- *
- *****************************************************************************/
-
- #ifndef __GLU_TESS_HEAP_H__
- #define __GLU_TESS_HEAP_H__
-
- #include "tess_typedefs.h"
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- #define HEAP_ALLOC 8
-
- #define HEAP_VERTEX( v ) ((tess_vertex_t *) (v)->ptr)
-
- typedef struct heap_elt_s
- {
- GLint index;
- GLdouble value;
- void *ptr;
- struct heap_elt_s *next, *prev;
- } heap_elt_t;
-
- typedef struct heap_s
- {
- GLint length;
- GLint size;
- GLint flags;
- heap_elt_t **elements;
- } heap_t;
-
- heap_t *heap_init();
- void heap_build( heap_t *heap );
- GLboolean heap_insert( heap_t *heap, heap_elt_t *element );
- heap_elt_t *heap_extract_max( heap_t *heap );
- heap_elt_t *heap_delete( heap_t *heap, GLint n );
- heap_elt_t *heap_delete_ptr( heap_t *heap, void *ptr );
-
- void heap_cleanup( heap_t **heap );
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* __GLU_TESS_HEAP_H__ */
-