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/**************************************************************************
* * * Copyright (C) 1989, Silicon Graphics, Inc. * * * * These coded instructions, statements, and computer programs contain * * unpublished proprietary information of Silicon Graphics, Inc., and * * are protected by Federal copyright law. They may not be disclosed * * to third parties or copied or duplicated in any form, in whole or * * in part, without the prior written consent of Silicon Graphics, Inc. * * * **************************************************************************/
#ifndef MONOTONE_H
#define MONOTONE_H
/* monotone.h */
/* Derrick Burns - 1989 */
#include <assert.h>
#include <setjmp.h>
#include <stdio.h>
#include "triangul.h"
#define INITVERTS 256
#define INITVPSIZE 256
#define VC_BAD 0x01
#define VC_OK 0x02
#define VC_LEFT 0x04
#define VC_RIGHT 0x08
#define VC_TOP 0x10
#define VC_BOTTOM 0x20
#define VC_LONE 0x40
#define VC_ERROR 0x80
enum _Vertclass { VC_NO_CLASS = 0, VC_OK_RIGHT = VC_OK | VC_RIGHT, VC_OK_LEFT = VC_OK | VC_LEFT, VC_OK_TOP = VC_OK | VC_TOP, VC_OK_BOTTOM = VC_OK | VC_BOTTOM, VC_BAD_RIGHT = VC_BAD | VC_RIGHT, VC_BAD_LEFT = VC_BAD | VC_LEFT, VC_BAD_LONE = VC_BAD | VC_LONE, VC_BAD_ERROR = VC_BAD | VC_ERROR};
typedef enum _Vertclass Vertclass;
typedef struct Vert { struct Vert *next; struct Vert *prev; struct Ray *ray; Vertclass vclass;#ifdef ADDED
char added;#endif
void *myid; void *nextid; float s; float t; double v[3]; void *data;} Vert;
typedef struct Ray { struct Ray *next; struct Ray *prev; struct Vert *vertex;#ifdef LAZYRECALC
struct Vert *end1; /* ray's zNear endpoint */ struct Vert *end2; /* ray's zFar endpoint */#endif
int orientation; int mustconnect; /* 1 if mustconnect, 0 otherwise */ float coords[3]; /* ax + by + c. Assume b >= 0. */} Ray;
extern void __gl_init_verts( GLUtriangulatorObj * );extern void __gl_free_verts( GLUtriangulatorObj * );
extern Vert *__gl_new_vert( GLUtriangulatorObj * );extern Vert *__gl_first_vert( Vert * );extern Vert *__gl_last_vert( Vert * );extern short __gl_ccw_vert( Vert * );extern void __gl_reverse_vert( Vert * );extern void __gl_checkray_vert( GLUtriangulatorObj *, Vert *, Ray *, Ray * );extern long __gl_orient_vert( Vert *, GLenum );
extern Ray * __gl_new_ray( GLUtriangulatorObj *, int );extern int __gl_above_ray( Ray *, Vert * );extern void __gl_recalc_ray( Ray *, Vert *, Vert * );
extern void __gl_init_raylist( GLUtriangulatorObj * );extern void __gl_add2_raylist( Ray *, Ray *, Ray * );extern void __gl_remove2_raylist( GLUtriangulatorObj *, Ray * );extern void __gl_delete_ray( GLUtriangulatorObj *, Ray * );
extern Ray *__gl_findray_raylist( GLUtriangulatorObj *, Vert *v);extern void __gl_free_raylist( GLUtriangulatorObj * );
extern void __gl_clear_triangulate( GLUtriangulatorObj * );extern void __gl_triangulate( GLUtriangulatorObj *, Vert *, long );extern void __gl_checktriangulate( GLUtriangulatorObj *, Vert * );
extern void __gl_init_priorityq( GLUtriangulatorObj *, long );extern void __gl_add_priorityq( GLUtriangulatorObj *,Vert *v );extern int __gl_more_priorityq( GLUtriangulatorObj * );extern void __gl_sort_priorityq( GLUtriangulatorObj * );extern Vert * __gl_remove_priorityq( GLUtriangulatorObj * );extern void __gl_free_priorityq( GLUtriangulatorObj * );
extern void __gl_unclassify_all( Vert * );extern int __gl_classify_all( Vert * );
extern void __gl_monotonize( GLUtriangulatorObj * );extern void __gl_clear_sort( GLUtriangulatorObj * );extern void __gl_triangulateloop( GLUtriangulatorObj *, Vert *);
#ifndef NT
#define mymalloc malloc
#define myfree free
#define myrealloc realloc
#else
#include <windows.h>
#define mymalloc(size) LocalAlloc(LMEM_FIXED, (size))
#define myfree(p) LocalFree((p))
#define myrealloc(p, size) LocalReAlloc((p), (size), LMEM_MOVEABLE)
#endif
#endif
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