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/*<html><pre>  -<a                             href="qh-io.htm"
  >-------------------------------</a><a name="TOP">-</a>

   declarations of Input/Output functions

   see README, qhull.h and io.c

   copyright (c) 1993-2002, The Geometry Center

#ifndef qhDEFio
#define qhDEFio 1

/*============ constants and flags ==================*/

/*-<a                             href="qh-io.htm#TOC"
  >--------------------------------</a><a name="qh_MAXfirst">-</a>
    maximum length of first two lines of stdin
#define qh_MAXfirst  200

/*-<a                             href="qh-io.htm#TOC"
  >--------------------------------</a><a name="qh_MINradius">-</a>
    min radius for Gp and Gv, fraction of maxcoord
#define qh_MINradius 0.02

/*-<a                             href="qh-io.htm#TOC"
  >--------------------------------</a><a name="qh_GEOMepsilon">-</a>
    adjust outer planes for 'lines closer' and geomview roundoff.  
    This prevents bleed through.
#define qh_GEOMepsilon 2e-3

/*-<a                             href="qh-io.htm#TOC"
  >--------------------------------</a><a name="qh_WHITESPACE">-</a>
    possible values of white space
#define qh_WHITESPACE " \n\t\v\r\f"

/*-<a                             href="qh-io.htm#TOC"
  >--------------------------------</a><a name="RIDGE">-</a>
    to select which ridges to print in qh_eachvoronoi
typedef enum
    qh_RIDGEall = 0, qh_RIDGEinner, qh_RIDGEouter

/*-<a                             href="qh-io.htm#TOC"
  >--------------------------------</a><a name="printvridgeT">-</a>
    prints results of qh_printvdiagram

    <a href="io.c#printvridge">qh_printvridge</a> for an example
typedef void (*printvridgeT)(FILE *fp, vertexT *vertex, vertexT *vertexA, setT *centers, boolT unbounded);

/*============== -prototypes in alphabetical order =========*/

void    dfacet( unsigned id);
void    dvertex( unsigned id);
void    qh_countfacets (facetT *facetlist, setT *facets, boolT printall, 
              int *numfacetsp, int *numsimplicialp, int *totneighborsp, 
              int *numridgesp, int *numcoplanarsp, int *numnumtricoplanarsp);
pointT *qh_detvnorm (vertexT *vertex, vertexT *vertexA, setT *centers, realT *offsetp);
setT   *qh_detvridge (vertexT *vertex);
setT   *qh_detvridge3 (vertexT *atvertex, vertexT *vertex);
int     qh_eachvoronoi (FILE *fp, printvridgeT printvridge, vertexT *atvertex, boolT visitall, qh_RIDGE innerouter, boolT inorder);
int     qh_eachvoronoi_all (FILE *fp, printvridgeT printvridge, boolT isupper, qh_RIDGE innerouter, boolT inorder);
void  qh_facet2point(facetT *facet, pointT **point0, pointT **point1, realT *mindist);
setT   *qh_facetvertices (facetT *facetlist, setT *facets, boolT allfacets);
void    qh_geomplanes (facetT *facet, realT *outerplane, realT *innerplane);
void    qh_markkeep (facetT *facetlist);
setT   *qh_markvoronoi (facetT *facetlist, setT *facets, boolT printall, boolT *islowerp, int *numcentersp);
void    qh_order_vertexneighbors(vertexT *vertex);
void  qh_printafacet(FILE *fp, int format, facetT *facet, boolT printall);
void    qh_printbegin (FILE *fp, int format, facetT *facetlist, setT *facets, boolT printall);
void  qh_printcenter (FILE *fp, int format, char *string, facetT *facet);
void    qh_printcentrum (FILE *fp, facetT *facet, realT radius);
void    qh_printend (FILE *fp, int format, facetT *facetlist, setT *facets, boolT printall);
void    qh_printend4geom (FILE *fp, facetT *facet, int *num, boolT printall);
void    qh_printextremes (FILE *fp, facetT *facetlist, setT *facets, int printall);
void    qh_printextremes_2d (FILE *fp, facetT *facetlist, setT *facets, int printall);
void    qh_printextremes_d (FILE *fp, facetT *facetlist, setT *facets, int printall);
void  qh_printfacet(FILE *fp, facetT *facet);
void  qh_printfacet2math(FILE *fp, facetT *facet, int notfirst);
void  qh_printfacet2geom(FILE *fp, facetT *facet, realT color[3]);
void    qh_printfacet2geom_points(FILE *fp, pointT *point1, pointT *point2,
                         facetT *facet, realT offset, realT color[3]);
void  qh_printfacet3math (FILE *fp, facetT *facet, int notfirst);
void  qh_printfacet3geom_nonsimplicial(FILE *fp, facetT *facet, realT color[3]);
void  qh_printfacet3geom_points(FILE *fp, setT *points, facetT *facet, realT offset, realT color[3]);
void  qh_printfacet3geom_simplicial(FILE *fp, facetT *facet, realT color[3]);
void  qh_printfacet3vertex(FILE *fp, facetT *facet, int format);
void  qh_printfacet4geom_nonsimplicial(FILE *fp, facetT *facet, realT color[3]);
void  qh_printfacet4geom_simplicial(FILE *fp, facetT *facet, realT color[3]);
void  qh_printfacetNvertex_nonsimplicial(FILE *fp, facetT *facet, int id, int format);
void  qh_printfacetNvertex_simplicial(FILE *fp, facetT *facet, int format);
void    qh_printfacetheader(FILE *fp, facetT *facet);
void    qh_printfacetridges(FILE *fp, facetT *facet);
void  qh_printfacets(FILE *fp, int format, facetT *facetlist, setT *facets, boolT printall);
void  qh_printhelp_degenerate(FILE *fp);
void  qh_printhelp_singular(FILE *fp);
void  qh_printhyperplaneintersection(FILE *fp, facetT *facet1, facetT *facet2,
               setT *vertices, realT color[3]);
void  qh_printneighborhood (FILE *fp, int format, facetT *facetA, facetT *facetB, boolT printall);
void    qh_printline3geom (FILE *fp, pointT *pointA, pointT *pointB, realT color[3]);
void  qh_printpoint(FILE *fp, char *string, pointT *point);
void  qh_printpointid(FILE *fp, char *string, int dim, pointT *point, int id);
void    qh_printpoint3 (FILE *fp, pointT *point);
void    qh_printpoints_out (FILE *fp, facetT *facetlist, setT *facets, int printall);
void    qh_printpointvect (FILE *fp, pointT *point, coordT *normal, pointT *center, realT radius, realT color[3]);
void    qh_printpointvect2 (FILE *fp, pointT *point, coordT *normal, pointT *center, realT radius);
void  qh_printridge(FILE *fp, ridgeT *ridge);
void    qh_printspheres(FILE *fp, setT *vertices, realT radius);
void    qh_printvdiagram (FILE *fp, int format, facetT *facetlist, setT *facets, boolT printall);
int     qh_printvdiagram2 (FILE *fp, printvridgeT printvridge, setT *vertices, qh_RIDGE innerouter, boolT inorder);
void  qh_printvertex(FILE *fp, vertexT *vertex);
void  qh_printvertexlist (FILE *fp, char* string, facetT *facetlist,
                         setT *facets, boolT printall);
void  qh_printvertices (FILE *fp, char* string, setT *vertices);
void    qh_printvneighbors (FILE *fp, facetT* facetlist, setT *facets, boolT printall);
void    qh_printvoronoi (FILE *fp, int format, facetT *facetlist, setT *facets, boolT printall);
void    qh_printvnorm (FILE *fp, vertexT *vertex, vertexT *vertexA, setT *centers, boolT unbounded);
void    qh_printvridge (FILE *fp, vertexT *vertex, vertexT *vertexA, setT *centers, boolT unbounded);
void  qh_produce_output(void);
void    qh_projectdim3 (pointT *source, pointT *destination);
int     qh_readfeasible (int dim, char *remainder);
coordT *qh_readpoints(int *numpoints, int *dimension, boolT *ismalloc);
void    qh_setfeasible (int dim);
boolT qh_skipfacet(facetT *facet);

#endif /* qhDEFio */

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