const.h

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/* $Id: const.h,v 1.1 2005/04/09 03:38:19 roxo Exp $ $Revision: 1.1 $ */
/* vim:set shiftwidth=4 ts=8: */

/**********************************************************
*      This software is part of the graphviz package      *
*                http://www.graphviz.org/                 *
*                                                         *
*            Copyright (c) 1994-2004 AT&T Corp.           *
*                and is licensed under the                *
*            Common Public License, Version 1.0           *
*                      by AT&T Corp.                      *
*                                                         *
*        Information and Software Systems Research        *
*              AT&T Research, Florham Park NJ             *
**********************************************************/

#ifndef GV_CONST_H
#define GV_CONST_H

#ifndef M_PI
#define M_PI 3.14159265358979323846
#endif
#ifndef PI
#define PI M_PI
#endif

#define SMALLBUF        128
#define LPAREN          '('
#define RPAREN          ')'
#define LBRACE          '{'
#define RBRACE          '}'

/*      node,edge types */
#ifdef NORMAL
#undef NORMAL
#endif
#define         NORMAL          0       /* an original input node */
#define         VIRTUAL         1       /* virtual nodes in long edge chains */
#define         SLACKNODE       2       /* encode edges in node position phase */
#define         REVERSED        3       /* reverse of an original edge */
#define         FLATORDER       4       /* for ordered edges */
#define         CLUSTER_EDGE 5  /* for ranking clusters */
#define         IGNORED         6       /* concentrated multi-edges */

/* collapsed node classifications */
#define         NOCMD           0       /* default */
#define         SAMERANK        1       /* place on same rank */
#define         MINRANK         2       /* place on "least" rank */
#define         SOURCERANK      3       /* strict version of MINRANK */
#define         MAXRANK         4       /* place on "greatest" rank */
#define         SINKRANK        5       /* strict version of MAXRANK */
#define         LEAFSET         6       /* set of collapsed leaf nodes */
#define         CLUSTER         7       /* set of clustered nodes */

/* type of cluster rank assignment */
#define         LOCAL           100
#define         GLOBAL          101
#define         NOCLUST         102

/* default attributes */
#define         DEFAULT_COLOR           "black"
#define         DEFAULT_FONTSIZE        14.0
#define         DEFAULT_LABEL_FONTSIZE  11.0    /* for head/taillabel */
#define         MIN_FONTSIZE            1.0
#define         DEFAULT_FONTNAME        "Times-Roman"
#define         DEFAULT_FILL            "lightgrey"
#define         LINESPACING             1.20

#define         DEFAULT_NODEHEIGHT      0.5
#define         MIN_NODEHEIGHT          0.02
#define         DEFAULT_NODEWIDTH       0.75
#define         MIN_NODEWIDTH           0.01
#define         DEFAULT_NODESHAPE       "ellipse"

#define         NODENAME_ESC            "\\N"

#define         DEFAULT_LAYERSEP        ":\t "

#define         DEFAULT_NODESEP 0.25
#define         MIN_NODESEP             0.02
#define         DEFAULT_RANKSEP 0.5
#define         MIN_RANKSEP             0.02

/* default margin for paged formats such as PostScript */
#define         DEFAULT_MARGIN  36

/* default margin for embedded formats such as PNG */
#define         DEFAULT_EMBED_MARGIN    5

#define         DEFAULT_PAGEHT  792
#define         DEFAULT_PAGEWD  612

#define         SELF_EDGE_SIZE  18
#define         MC_SCALE        256     /* for mincross */

#define         PORT_LABEL_DISTANCE     10
#define         PORT_LABEL_ANGLE        -25     /* degrees; pos is CCW, neg is CW */

/* arrow types */
#define         ARR_NONE         0

/* sides (e.g. of cluster margins) */
#define         BOTTOM_IX       0
#define         RIGHT_IX        1
#define         TOP_IX          2
#define         LEFT_IX         3

/* sides of boxes for SHAPE_path */
#define         BOTTOM          (1<<BOTTOM_IX)
#define         RIGHT           (1<<RIGHT_IX)
#define         TOP             (1<<TOP_IX)
#define         LEFT            (1<<LEFT_IX)

#define CCW  -1                 /* counter clock-wise */
#define CW    1                 /* clock-wise */

/* Obj types  for renderers */
#define         NONE    0
#define         NODE    1
#define         EDGE    2
#define         CLST    3

/* output languages */
#define         ATTRIBUTED_DOT  0       /* default */
#define         POSTSCRIPT      1
#define         HPGL            2       /* HP Graphics Language */
#define         PCL             3       /* Printer Control Language */
#define         MIF             4       /* Adobe FrameMaker */
#define         PIC_format      5       /* symbol PIC is used by compilers for 
                                           Position Independent Code */
#define         PLAIN           6
#define         PLAIN_EXT       7

#define         GD              8       /* libgd bitmap format */
#define         memGD           9       /* libgd bitmap format */
#define         GD2             10      /* libgd bitmap format */
#define         GIF             11      /* libgd bitmap format */
#define         JPEG            12      /* libgd bitmap format */
#define         PNG             13      /* libgd bitmap format */
#define         WBMP            14      /* libgd bitmap format */
#define         XBM             15      /* libgd bitmap format */

#define         ISMAP           16      /* old style map file for httpd servers */
#define         IMAP            17      /* apache map file for httpd servers */
#define         CMAP            18      /* client map file for html browsers */
#define         CMAPX           19      /* client map file for xhtml browsers */
#define         VRML            20
#define         VTX             21      /* visual thought */
#define         METAPOST        22
#define         FIG             23      /* xfig drawing tool */
#define         DIA             24      /* dia drawing tool */
#define         SVG             25      /* Structured Vector Graphics */
#define         SVGZ            26      /* compressed SVG */
#define         CANONICAL_DOT   27      /* wanted for tcl/tk version */
#define         PDF             28
#define         EXTENDED_DOT    29      /* dot with drawing info */
#define         CAIRO_X11       30      /* x11 via cairo */
#define         CAIRO_PNG       31      /* png via cairo */
#define         CAIRO_PS        32      /* ps via cairo */

#define         QPDF            33      /* Quartz paged PDF */
#define         QEPDF           34      /* Quartz embedded PDF */

#define         QBM_FIRST 100   /* first Quartz bitmap format, inclusive */
#define         QBM_LAST 200    /* last Quartz bitmap format, exclusive */

/* for clusters */
#define         CL_BACK         10      /* cost of backward pointing edge */
#define         CL_OFFSET       8       /* margin of cluster box in PS points */
#ifndef MSWIN32
#define         CL_CROSS        1000    /* cost of cluster skeleton edge crossing */
#else
#define         CL_CROSS        100     /* avoid 16 bit overflow */
#endif

/* edge types */
#define REGULAREDGE 1
#define FLATEDGE    2
#define SELFWPEDGE  4
#define SELFNPEDGE  8
#define SELFEDGE    8
#define EDGETYPEMASK     15     /* the OR of the above */

/* for graph server */
#define         SERVER_NN       200
#define         SERVER_NE       500

/* for neato */
#define Spring_coeff    1.0
#define MYHUGE          (1.0e+37)
#define MAXDIM                  10

/* drawing phases */
#define GVBEGIN         0
#define GVSPLINES       1

/* existence of labels */
#define EDGE_LABEL              1
#define HEAD_LABEL              2
#define TAIL_LABEL              4
#define GRAPH_LABEL             8

/* type of graph label: GD_label_pos */
#define LABEL_AT_BOTTOM 0
#define LABEL_AT_TOP    1
#define LABEL_AT_LEFT   2
#define LABEL_AT_RIGHT  4

/* values specifying rankdir */
#define RANKDIR_TB      0
#define RANKDIR_LR      1
#define RANKDIR_BT      2
#define RANKDIR_RL      3

/* user-specified node position: ND_pinned */
#define P_SET    1              /* position supplied by user */
#define P_FIX    2              /* position fixed during topological layout */
#define P_PIN    3              /* position fixed */

#define GAP 4                   /* whitespace in POINTS around labels and between peripheries */

#endif