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/* This C program, h-demo.c, when compiled and linked with GNU libplot,
will emit to standard output a sample page illustrating many of the
Hershey fonts. The file will be in portable metafile format. It may be
translated to other formats, or viewed in an X window, with the `plot'
utility. The sample page is taken from Allen Hershey's 1972 article in
Computer Graphics and Image Processing (vol. 1, no. 4, pp. 373-385).
Compile and link with:
gcc h-demo.c -lplot -lXaw -lXmu -lXt -lXext -lX11 -lm
or, in recent versions of the X Window System,
gcc h-demo.c -lplot -lXaw -lXmu -lXt -lSM -lICE -lXext -lX11 -lm
To translate the sample page to Postscript, you would do
`a.out | plot -T ps > page.ps'. To display the page in an
X Window, you would do `a.out | plot -T X', etc.
The above compilation instructions assume that your linker will be able
to find libplot and the X Window System libraries. You may need to
include such options as -L/usr/local/lib and -L/usr/X11/lib to ensure
this. Also, the linking options may differ if you are using Motif.
If you are using a C compiler other than gcc, consult your system
administrator.
(The -DNO_CONST_SUPPORT option may need to be used if the C compiler,
like the version of `cc' supplied with SunOS 4.1.x, is so old that it
does not understand the `const' type qualifier. If compiling under
SunOS 4.1.x, you may also need to specify the `-static' option, to work
around problems with undefined symbols in the SunOS X libraries.)
If you have any trouble running the demo after compiling it, be sure
your LD_LIBRARY_PATH environment variable includes the directory in
which libplot is stored. This only applies on systems in which libplot
is implemented as a shared library that is linked at run time. */
#include <stdio.h>
#include <plot.h>
#ifdef M_SQRT1_2
#undef M_SQRT1_2
#endif
#define M_SQRT1_2 (0.70710678118654752440) /* 1/sqrt(2) */
#define NUM_DEMO_WORDS 34
struct hershey_word
{
char *word;
char *fontname;
double m[6];
char just;
};
#define CART (9.0/21.0) /* `cartographic' size */
#define INDEXICAL (13.0/21.0) /* `indexical' size */
#define LLX -3800.0
#define LLY -3450.0
#define URX 3800.0
#define URY 4150.0
#define BASE_FONTSIZE 220.0
struct hershey_word demo_word[NUM_DEMO_WORDS] =
{
{"Invitation", "HersheyScript-Bold",
{ 1., 0., 0., 1., -3125., 3980. }, 'l' },
{"ECONOMY", "HersheySans",
{ 1., 0., 0., 1., -3125., 3340. }, 'l'},
{"CARTOGRAPHY", "HersheySans",
{ CART, 0., 0., CART, -3125., 2700. }, 'l'},
{"Gramma", "HersheySerifSymbol",
{ 1., 0., 0., 1., -3125., 2060. }, 'l'},
{"\347\322\301\306\311\313\301", "HersheyCyrillic",
{ 1., 0., 0., 1., -3125., 1420. }, 'l'},
{"COMMUNICATION", "HersheySans-Bold",
{ 1., 0., 0., 1., 0., 3980. }, 'c'},
{"VERSATILITY", "HersheySerif-Italic",
{ 1., 0., 0., 1., 0., 3340. }, 'c'},
{"Standardization", "HersheySerif",
{ 1., 0., 0., 1., 0., 2700. }, 'c'},
{"Sumbolon", "HersheySerifSymbol",
{ INDEXICAL, 0., 0., INDEXICAL, 0., 2060. }, 'c'},
{"\363\354\357\366\356\357\363\364\370", "HersheyCyrillic",
{ 1., 0., 0., 1., 0., 1420. }, 'c'},
{"Publication", "HersheyScript-Bold",
{ 1., 0., 0., 1., 3125., 3980. }, 'r'},
{"Quality", "HersheyGothicEnglish",
{ 1., 0., 0., 1., 3125., 3340. }, 'r'},
{"TYPOGRAPHY", "HersheySans",
{ CART, 0., 0., CART, 3125., 2700. }, 'r'},
{"AriJmo\\s-", "HersheySerifSymbol",
{ 1., 0., 0., 1., 3125., 2060. }, 'r'},
{"\346\317\316\305\324\311\313\301", "HersheyCyrillic",
{ 1., 0., 0., 1., 3125., 1420. }, 'r'},
{"EXTENSION", "HersheySans",
{ 17./7., 0., 0., 2./7., 0., 780. }, 'c'},
{"CONDENSATION", "HersheySans",
{ 5./7., 0., 0., 17./7., 0., -20. }, 'c'},
{"Rotation", "HersheySans",
{ M_SQRT1_2, M_SQRT1_2, -M_SQRT1_2, M_SQRT1_2, -2880., -20. }, 'l'},
{"ROTATION", "HersheySans",
{ M_SQRT1_2, -M_SQRT1_2, M_SQRT1_2, M_SQRT1_2, 2880., -20. }, 'r'},
{"Syllabary", "HersheySerif",
{ 1., 0., 0., 1., -3125., -780. }, 'l'},
{"Art", "HersheyGothicEnglish",
{ 1., 0., 0., 1., -3125., -1420. }, 'l'},
{"Meteorology", "HersheySerif-Italic",
{ INDEXICAL, 0., 0., INDEXICAL, -3125., -2060.}, 'l'},
{"CHEMISTRY", "HersheySerif",
{ 1., 0., 0., 1., -3125., -2700.}, 'l'},
{"Analysis", "HersheySerif-BoldItalic",
{ 1., 0., 0., 1., -3125., -3340.}, 'l'},
{"LEXIKON", "HersheySerifSymbol-Bold",
{ 1., 0., 0., 1., 0., -780.}, 'c'},
{"\\#J3d71\\#J463b", "HersheySerif",
{ 1./.7, 0., 0., 1./.7, 0., -1420.}, 'c'},
{"Wissenschaft", "HersheyGothicGerman",
{ 1., 0., 0., 1., 0., -2060.}, 'c'},
{"Electronics", "HersheySerif-Italic",
{ 1., 0., 0., 1., 0., -2700.}, 'c'},
{"COMPUTATION", "HersheySerif-Bold",
{ 1., 0., 0., 1., 0., -3340.}, 'c'},
{"Alphabet", "HersheySerif",
{ 1., 0., 0., 1., 3125., -780.}, 'r'},
{"Music", "HersheyGothicItalian",
{ 1., 0., 0., 1., 3125., -1420.}, 'r'},
{"Astronomy", "HersheySerif",
{ INDEXICAL, 0., 0., INDEXICAL, 3125., -2060.}, 'r'},
{"MATHEMATICS", "HersheySerif",
{ 1., 0., 0., 1., 3125., -2700.}, 'r'},
{"Program", "HersheySerif-BoldItalic",
{ 1., 0., 0., 1., 3125., -3340.}, 'r'},
};
int
main()
{
plPlotter *plotter;
plPlotterParams *plotter_params;
int i;
/* set Plotter parameters */
plotter_params = pl_newplparams ();
pl_setplparam (plotter_params, "META_PORTABLE", "yes");
/* create a Metafile Plotter with the specified parameters */
if ((plotter = pl_newpl_r ("meta", stdin, stdout, stderr,
plotter_params)) == NULL)
{
fprintf (stderr, "Couldn't create Plotter\n");
return 1;
}
/* open it, set up user coordinate system */
pl_openpl_r (plotter);
pl_erase_r (plotter);
pl_fspace_r (plotter, LLX, LLY, URX, URY);
/* loop through words, each time saving and restoring graphics state */
for (i = 0; i < NUM_DEMO_WORDS; i++)
{
pl_savestate_r (plotter);
pl_fontname_r (plotter, demo_word[i].fontname);
pl_fconcat_r (plotter,
demo_word[i].m[0], demo_word[i].m[1],
demo_word[i].m[2], demo_word[i].m[3],
demo_word[i].m[4], demo_word[i].m[5]);
pl_ffontsize_r (plotter, BASE_FONTSIZE);
pl_fmove_r (plotter, 0.0, 0.0);
pl_alabel_r (plotter, demo_word[i].just, 'c', demo_word[i].word);
pl_restorestate_r (plotter);
}
/* close and delete Plotter */
pl_closepl_r (plotter);
if (pl_deletepl_r (plotter) < 0)
{
fprintf (stderr, "Couldn't delete Plotter\n");
return 1;
}
return 0;
}
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