text: 
  
  /*************************************************************************
   * Copyright (c) 2011 AT&T Intellectual Property 
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors: See CVS logs. Details at http://www.graphviz.org/
   *************************************************************************/
  
  #ifndef GV_RENDER_H
  #define GV_RENDER_H
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  #ifdef HAVE_CONFIG_H
  #include "config.h"
  #endif
  
  #ifdef HAVE_SYS_TYPES_H
  #include <sys/types.h>
  #endif
  #ifdef HAVE_STDLIB_H
  #include <stdlib.h>
  #endif
  #ifdef HAVE_STDDEF_H
  #include <stddef.h>
  #endif
  #ifdef HAVE_STRINGS_H
  #include <strings.h>
  #endif
  #ifdef HAVE_STRING_H
  #include <string.h>
  #endif
  
  #include "types.h"
  #include "macros.h"
  #include "const.h"
  #include "globals.h"
  #include "memory.h"
  #include "colorprocs.h"		/* must collow color.h (in types.h) */
  #include "geomprocs.h"		/* must follow geom.h (in types.h) */
  #include "agxbuf.h"
  #include "utils.h"		/* must follow types.h and agxbuf.h */
  #include "gvplugin.h"		/* must follow gvcext.h (in types.h) */
  #include "gvcjob.h"		/* must follow gvcext.h (in types.h) */
  #include "gvcint.h"		/* must follow gvcext.h (in types.h) */
  #include "gvcproc.h"		/* must follow gvcext.h (in types.h) */
  
      typedef struct epsf_s {
  	int macro_id;
  	point offset;
      } epsf_t;
  
      typedef void (*nodesizefn_t) (Agnode_t *, boolean);
  
  /*visual studio*/
  #ifdef WIN32
  #ifndef GVC_EXPORTS
  #define extern __declspec(dllimport)
  #endif
  #endif
  /*end visual studio*/
  
  	extern void add_box(path *, boxf);
      extern void arrow_flags(Agedge_t * e, int *sflag, int *eflag);
      extern boxf arrow_bb(pointf p, pointf u, double arrowsize, int flag);
      extern void arrow_gen(GVJ_t * job, emit_state_t emit_state, pointf p, pointf u,
  			  double arrowsize, double penwidth, int flag);
      extern double arrow_length(edge_t * e, int flag);
      extern int arrowEndClip(edge_t*, pointf*, int, int , bezier*, int eflag);
      extern int arrowStartClip(edge_t*, pointf* ps, int, int, bezier*, int sflag);
      extern void arrowOrthoClip(edge_t*, pointf* ps, int, int, bezier*, int sflag, int eflag);
      extern void beginpath(path *, Agedge_t *, int, pathend_t *, boolean);
      extern void bezier_clip(inside_t * inside_context,
  			    boolean(*insidefn) (inside_t * inside_context,
  						pointf p), pointf * sp,
  			    boolean left_inside);
      extern shape_desc *bind_shape(char *name, node_t *);
      extern void makeStraightEdge(graph_t * g, edge_t * e, int edgetype, splineInfo * info);
      extern void makeStraightEdges(graph_t* g, edge_t** edges, int e_cnt, int et, splineInfo* sinfo);
      extern void clip_and_install(edge_t * fe, node_t * hn,
  	pointf * ps, int pn, splineInfo * info);
      extern char* charsetToStr (int c);
      extern pointf coord(node_t * n);
      extern void do_graph_label(graph_t * sg);
      extern void graph_init(graph_t * g, boolean use_rankdir);
      extern void graph_cleanup(graph_t * g);
      extern int dotneato_args_initialize(GVC_t * gvc, int, char **);
      extern int dotneato_usage(int);
      extern void dotneato_postprocess(Agraph_t *);
      extern void gv_postprocess(Agraph_t *, int);
      extern void dotneato_set_margins(GVC_t * gvc, Agraph_t *);
      extern void dotneato_write(GVC_t * gvc, graph_t *g);
      extern void dotneato_write_one(GVC_t * gvc, graph_t *g);
      extern Ppolyline_t* ellipticWedge (pointf ctr, double major, double minor, double angle0, double angle1);
      extern void emit_clusters(GVJ_t * job, Agraph_t * g, int flags);
      extern char* getObjId (GVJ_t* job, void* obj, agxbuf* xb);
      /* extern void emit_begin_edge(GVJ_t * job, edge_t * e, char**); */
      /* extern void emit_end_edge(GVJ_t * job); */
      extern void emit_graph(GVJ_t * job, graph_t * g);
      extern void emit_label(GVJ_t * job, emit_state_t emit_state, textlabel_t *);
      extern int emit_once(char *message);
      extern void emit_jobs_eof(GVC_t * gvc);
      extern void emit_map_rect(GVJ_t *job, boxf b);
      extern void enqueue_neighbors(nodequeue *, Agnode_t *, int);
      extern void endpath(path *, Agedge_t *, int, pathend_t *, boolean);
      extern void epsf_init(node_t * n);
      extern void epsf_free(node_t * n);
      extern shape_desc *find_user_shape(const char *);
      extern void free_line(textspan_t *);
      extern void free_label(textlabel_t *);
      extern void free_textspan(textspan_t * tl, int);
      extern void getdouble(graph_t * g, char *name, double *result);
      extern splines *getsplinepoints(edge_t * e);
      extern void gv_fixLocale (int set);
      extern void gv_free_splines(edge_t * e);
      extern void gv_cleanup_edge(Agedge_t * e);
      extern void gv_cleanup_node(Agnode_t * n);
      extern void* init_xdot (Agraph_t* g);
      extern int initMapData (GVJ_t*, char*, char*, char*, char*, char*, void*);
      extern boolean isPolygon(node_t *);
      extern void makeSelfEdge(path * P, edge_t * edges[], int ind, int cnt,
  	double sizex, double sizey, splineInfo * sinfo);
      extern textlabel_t *make_label(void *obj, char *str, int kind, double fontsize, char *fontname, char *fontcolor);
      extern bezier *new_spline(edge_t * e, int sz);
      extern char **parse_style(char *s);
      extern void place_graph_label(Agraph_t *);
      extern int place_portlabel(edge_t * e, boolean head_p);
      extern void makePortLabels(edge_t * e);
      extern pointf edgeMidpoint(graph_t* g, edge_t * e);
      extern void addEdgeLabels(graph_t* g, edge_t * e, pointf rp, pointf rq);
      extern void pop_obj_state(GVJ_t *job);
      extern obj_state_t* push_obj_state(GVJ_t *job);
      extern int rank(graph_t * g, int balance, int maxiter);
      extern port resolvePort(node_t*  n, node_t* other, port* oldport);
      extern void resolvePorts (edge_t* e);
      extern void round_corners(GVJ_t * job, pointf * AF, int sides, int style, int filled);
      extern int routesplinesinit(void);
      extern pointf *routesplines(path *, int *);
      extern void routesplinesterm(void);
      extern pointf* simpleSplineRoute (pointf, pointf, Ppoly_t, int*, int);
      extern pointf *routepolylines(path* pp, int* npoints);
      extern int selfRightSpace (edge_t* e);
      extern void setup_graph(GVC_t * gvc, graph_t * g);
      extern shape_kind shapeOf(node_t *);
      extern void shape_clip(node_t * n, pointf curve[4]);
      extern void make_simple_label (GVC_t * gvc, textlabel_t* rv);
      extern int stripedBox (GVJ_t * job, pointf* AF, char* clrs, int rotate);
      extern stroke_t* taper (bezier*, double (*radfunc_t)(double,double,double), double initwid, int linejoin, int linecap);
      extern stroke_t* taper0 (bezier* bez, double initwid);
      extern pointf textspan_size(GVC_t * gvc, textspan_t * span);
      extern Dt_t * textfont_dict_open(GVC_t *gvc);
      extern void textfont_dict_close(GVC_t *gvc);
      extern void translate_bb(Agraph_t *, int);
      extern int wedgedEllipse (GVJ_t* job, pointf * pf, char* clrs);
      extern void update_bb_bz(boxf *bb, pointf *cp);
      extern void write_attributed_dot(graph_t *g, FILE *f);
      extern void write_canonical_dot(graph_t *g, FILE *f);
      extern boxf xdotBB (graph_t* g);
      extern char *findAttrColor(void *obj, attrsym_t *colorattr, char *dflt);
  
  #undef extern
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  