grace_np/test_np.c

   1 #include <stdlib.h>
   2 #include <stdio.h>
   3 #include <unistd.h>
   4 #include "grace_np.h"
   5
   6 #ifndef EXIT_SUCCESS
   7 #  define EXIT_SUCCESS 0
   8 #endif
   9
  10 #ifndef EXIT_FAILURE
  11 #  define EXIT_FAILURE -1
  12 #endif
  13
  14 void my_error_function(const char *msg)
  15 {
  16     fprintf(stderr, "library message : \"%s\"\n", msg);
  17 }
  18
  19 int
  20 main (int argc, char* argv[])
  21 {
  22     int i;
  23
  24     GraceRegisterErrorFunction (my_error_function);
  25
  26     /* Start Grace with a buffer size of 2048 and open the pipe */
  27     if (GraceOpen(2048) == -1) {
  28         fprintf (stderr, "Can't run Grace. \n");
  29         exit (EXIT_FAILURE);
  30     }
  31
  32     /* Send some initialization commands to Grace */
  33     GracePrintf ("world xmax 100");
  34     GracePrintf ("world ymax 10000");
  35     GracePrintf ("xaxis tick major 20");
  36     GracePrintf ("xaxis tick minor 10");
  37     GracePrintf ("yaxis tick major 2000");
  38     GracePrintf ("yaxis tick minor 1000");
  39     GracePrintf ("s0 on");
  40     GracePrintf ("s0 symbol 1");
  41     GracePrintf ("s0 symbol size 0.3");
  42     GracePrintf ("s0 symbol fill pattern 1");
  43     GracePrintf ("s1 on");
  44     GracePrintf ("s1 symbol 1");
  45     GracePrintf ("s1 symbol size 0.3");
  46     GracePrintf ("s1 symbol fill pattern 1");
  47
  48     /* Display sample data */
  49     for (i = 1; i <= 100 && GraceIsOpen(); i++) {
  50         GracePrintf ("g0.s0 point %d, %d", i, i);
  51         GracePrintf ("g0.s1 point %d, %d", i, i * i);
  52         /* Update the Grace display after every ten steps */
  53         if (i % 10 == 0) {
  54             GracePrintf ("redraw");
  55             /* Wait a second, just to simulate some time needed for
  56                calculations. Your real application shouldn't wait. */
  57             sleep (1);
  58         }
  59     }
  60
  61     if (GraceIsOpen()) {
  62         /* Tell Grace to save the data */
  63         GracePrintf ("saveall \"sample.agr\"");
  64
  65         /* Flush the output buffer and close Grace */
  66         GraceClose();
  67
  68         /* We are done */
  69         exit (EXIT_SUCCESS);
  70     } else {
  71         exit (EXIT_FAILURE);
  72     }
  73
  74 }
  75