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libtest.c
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libtest.c
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/* libtest --- test the HPGL library 2020-08-10 */
/* Copyright (c) 2020 John Honniball, Froods Software Development */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <unistd.h>
#include "hpgllib.h"
struct Point {
double x;
double y;
};
void lineTest(const double xc, const double yc, const double wd, const double ht, const PlotInfo_t *const info);
void circleTest(const double xc, const double yc, const double wd, const double ht, const PlotInfo_t *const info);
void arcTest(const double xc, const double yc, const double wd, const double ht, const PlotInfo_t *const info);
void textTest(const double xc, const double yc, const double wd, const double ht, const PlotInfo_t *const info);
int main(int argc, char * const argv[])
{
int opt;
double xc, yc;
double h4, w4;
double maxx, maxy;
PlotInfo_t info;
while ((opt = getopt(argc, argv, "no:p:q:s:t:v:")) != -1) {
switch (opt) {
case 's':
case 'n':
case 'o':
case 'p':
case 'q':
case 't':
case 'v':
plotopt(opt, optarg);
break;
default: /* '?' */
fprintf(stderr, "Usage: %s [-p pen] [-q plotter] [-s <size>] [-t title]\n", argv[0]);
fprintf(stderr, " <size> ::= A1 | A2 | A3 | A4 | A5\n");
exit(EXIT_FAILURE);
}
}
if (plotbegin(1) < 0) {
fputs("Failed to initialise HPGL library\n", stderr);
exit(EXIT_FAILURE);
}
if (getplotinfo(&info, sizeof (info)) < 0) {
fputs("Failed to get plot information\n", stderr);
exit(EXIT_FAILURE);
}
getplotsize(&maxx, &maxy);
xc = maxx / 2.0;
yc = maxy / 2.0;
w4 = maxx / 4.0;
h4 = maxy / 4.0;
writedisplay("LIBTEST");
moveto(0.0, yc);
lineto(maxx, yc);
moveto(xc, 0.0);
lineto(xc, maxy);
lineTest(w4, yc + h4, w4, h4, &info);
circleTest(w4, h4, w4, h4, &info);
arcTest(xc + w4, yc + h4, w4, h4, &info);
textTest(xc + w4, h4, w4, h4, &info);
plotend();
return (0);
}
void lineTest(const double xc, const double yc, const double wd, const double ht, const PlotInfo_t *const info)
{
const double len = wd / 16.0;
double hside = wd * 0.8;
double vside = ht * 0.8;
moveto(xc - len, yc);
lineto(xc + len, yc);
moveto(xc, yc - len);
lineto(xc, yc + len);
rectangle(xc - hside, yc - vside, xc + hside, yc + vside);
hside = wd * 0.7;
vside = ht * 0.7;
roundrect(xc - hside, yc - vside, xc + hside, yc + vside, wd / 8);
hlabel(xc - (wd / 2.0), yc - (ht / 2.0), 5.0, info->plotterName);
hlabel(xc + (wd / 2.0), yc - (ht / 2.0), 5.0, info->paperName);
}
void circleTest(const double xc, const double yc, const double wd, const double ht, const PlotInfo_t *const info)
{
const double major = wd / 2.0;
const double minor = ht / 2.0;
circle(xc, yc, minor);
ellipse(xc, yc, major, minor, 0.0);
ellipse(xc, yc, major, minor, (M_PI / 4.0));
ellipse(xc, yc, major, minor, (M_PI / 2.0));
circle(xc, yc, major);
}
void arcTest(const double xc, const double yc, const double wd, const double ht, const PlotInfo_t *const info)
{
double radius = wd / 2.0;
const double delta = M_PI / 4.0;
double angle;
int i;
moveto(xc - radius, yc);
lineto(xc + radius, yc);
moveto(xc + radius, yc - radius);
lineto(xc - radius, yc + radius);
moveto(xc, yc + radius);
lineto(xc, yc - radius);
moveto(xc - radius, yc - radius);
lineto(xc + radius, yc + radius);
for (i = 0; i < 7; i++) {
radius = (wd / 16.0) * (i + 1);
angle = 45.0 * (i + 1);
moveto(xc - radius, yc);
arc(xc, yc, angle);
}
}
void textTest(const double xc, const double yc, const double wd, const double ht, const PlotInfo_t *const info)
{
const double len = wd / 16.0;
moveto(xc - len, yc);
lineto(xc + len, yc);
moveto(xc, yc - len);
lineto(xc, yc + len);
hlabel(xc, yc, 10.0, "ABCDEF");
// hlabel(xc, yc + (len * 2.0), 10.0, "\x99\x9F\xEC");
}