Subversion Repositories programming

/*******************************************************************************

 * draw_test.c - a simple test of the draw library

 *

 * Copyright (c) 2006, Ira W. Snyder (devel@irasnyder.com)

 ******************************************************************************/

#include <stdio.h>

#include <math.h>

#include <unistd.h>

#include "draw.h"

void wait_for_newline ()

{

    char c;

    while ((c = getchar()) != '\n')

        usleep (10000);

}

int main ()

{

    int i;

    int sinpos;

    const int strsiz = 100;

    char *tempstr;

    /* Initialize the draw library */

    draw_init ();

    tempstr = (char*) malloc (strsiz * sizeof(char));

    /* Testcase #1, a few boxes, a line, and a pixel */

    draw_clearscreen ();

    draw_putpixel (20, 20, RED);

    draw_box (50, 50, 100, 100, GREEN);

    draw_line (30, 20, 300, 180, BLUE);

    draw_box (100, 80, 100, 100, WHITE);

    wait_for_newline ();

    /* Testcase #2, all of the possible colors */

    draw_clearscreen ();

    for (i=0; i<16; i++)

    {

        draw_box (10, (i+1)*22, 20, 20, i);

        snprintf (tempstr, strsiz, "color: #%d", i);

        draw_puts (36, (i+1)*22+8, tempstr, WHITE);

    }

    wait_for_newline ();

    /* Testcase #3, draw the sin() function, labeling it as we go */

    draw_clearscreen ();

    for (i=0; i<800; i++)

    {

        /* sin itself */

        sinpos = 400+(50.0 * sin (i / 50.0));

        draw_putpixel (i, sinpos, GREEN);

        /* labels */

        if (i % 100 == 0)

        {

            snprintf (tempstr, strsiz, "%d sec", i / 100);

            draw_puts (i, sinpos + 10, tempstr, WHITE);

            draw_line (i, sinpos, i, sinpos+8, WHITE);

        }

        /* slow it down */

        usleep (10000);

    }

    wait_for_newline ();

    /* Testcase #4, text output */

    draw_clearscreen ();

    draw_puts (0, 80, "Hello world!", WHITE);

    draw_puts (20, 100, "Some more test text", RED);

    wait_for_newline ();

    /* Cleanup */

    draw_close ();

    free (tempstr);

    return (0);

}