fk0, легенда (02.06.2014 12:10, просмотров: 390) ответил Derun на Обновил версию, но графического режима пока не добился, не помешал бы пример.
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#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#define TEKWIDTH 1023
#define TEKHEIGHT 767
FILE *tekfile;
#define BEL 007
#define ETX 003
#define FF 014
#define FS 034
#define ESC 033
#define GS 035
#define RS 036
#define US 037
void tek_coord(int x, int y)
{
putc(0x20 | (y>>5), tekfile);
#if 0
putchar(0x60); /* 10 bit coord */
#endif
putc(0x60 | (y&0x1f), tekfile);
putc(0x20 | (x>>5), tekfile);
putc(0x40 | (x&0x1f), tekfile);
}
#define TEKVECT() fputc(GS, tekfile)
#define TEKPLOT() fputc(FS, tekfile)
#define TEKTEXT() fputc(US, tekfile)
#define TEK_SOLID "\033`"
#define TEK_DOTTED "\033a"
#define TEK_DOT_DASH "\033b"
#define TEK_SHORT_DASH "\033c"
#define TEK_LONG_DASH "\033d"
#define TEK_LARGE_FONT "\0338"
#define TEK_SMALL_FONT "\033;"
#define TEK_PAGE "\033\014"
#define TEK_MODE "\033[?38h"
#define VT_MODE "\033\003"
void tek_cleanup(void)
{
/* return to VT100 mode for xterm */
fputs(VT_MODE, tekfile);
fflush(tekfile);
}
void tek_rect(int x0, int y0, int x1, int y1)
{
TEKVECT();
tek_coord(x0, y0), tek_coord(x1, y0),
tek_coord(x1, y1), tek_coord(x0, y1),
tek_coord(x0, y0);
}
unsigned N_CHAN = 12;
#define L_WIDTH 48
#define R_HEIGHT 16
#define R_LENGTH 100
#define C_HEIGHT ((TEKHEIGHT-R_HEIGHT)/N_CHAN)
#define C_BOTTOM(chan) (chan*C_HEIGHT+R_HEIGHT)
static float maxscale(float x)
{
const static int steps[] = {1, 2, 5};
int i;
float v;
float min = INFINITY;
if (x == 0) abort();
if (x > 0) {
for (i=0; i<sizeof(steps)/sizeof(steps[0]); i++) {
v=steps[i]*pow(10, ceil(log10(x/steps[i])));
if (min > v) min=v;
}
return min;
}
else {
return 0 - maxscale(0-x);
}
}
void plot2xy(unsigned chan, int Xp, int Yp, float *x, float *y)
{
}
void xy2plot(unsigned chan, float x, float y, int *Xp, int *Yp)
{
}
void draw_decor(void)
{
int i;
float x;
fputs(TEK_SMALL_FONT, tekfile);
for (x=L_WIDTH; x<TEKWIDTH-50; x+=50) {
TEKVECT(), tek_coord(x, R_HEIGHT), tek_coord(x, R_HEIGHT-4);
TEKPLOT(), tek_coord(x, 0);
TEKTEXT(), fprintf(tekfile, "%g", x);
}
fputs(TEK_LARGE_FONT, tekfile);
for (i=0; i<N_CHAN; i++) {
TEKPLOT(), tek_coord(L_WIDTH/4, C_BOTTOM(i)+L_WIDTH/4);
TEKTEXT(), fprintf(tekfile, "%i", i);
TEKVECT();
tek_coord(0, C_BOTTOM(i));
tek_coord(TEKWIDTH-1, C_BOTTOM(i));
}
TEKVECT();
tek_coord(0, N_CHAN*C_HEIGHT+R_HEIGHT);
tek_coord(TEKWIDTH-1, N_CHAN*C_HEIGHT+R_HEIGHT);
TEKVECT();
tek_coord(L_WIDTH, 0), tek_coord(L_WIDTH, N_CHAN*C_HEIGHT+R_HEIGHT);
}
int main()
{
tekfile=stdout;
atexit(tek_cleanup);
/* switch VT320 to tek mode and clear screen,
* set large font */
fputs(TEK_MODE TEK_PAGE TEK_LARGE_FONT TEK_SOLID, tekfile);
draw_decor();
TEKPLOT(), tek_coord(50, 50);
TEKPLOT(), tek_coord(100, 100);
fflush(tekfile);
tek_cleanup();
printf("%f\n", maxscale(-3));
return 0;
}
[ZX]