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#include "Main.h"
#include <stdio.h>
#include <string.h>
#include "Curves.h"
#include "Defines.h"
#include "Dimensions.h"
#include "HpFile.h"
#include "Utilities.h"
/* own stuff */
#include "Axes.h"
typedef enum {MEGABYTE, KILOBYTE, BYTE} mkb;
static void XAxis PROTO((void)); /* forward */
static void YAxis PROTO((void)); /* forward */
static void XAxisMark PROTO((floatish, floatish)); /* forward */
static void YAxisMark PROTO((floatish, floatish, mkb)); /* forward */
static floatish Round PROTO((floatish)); /* forward */
void
Axes(void)
{
XAxis();
YAxis();
}
static void
XAxisMark(floatish x, floatish num)
{
/* calibration mark */
fprintf(psfp, "%f %f moveto\n", xpage(x), ypage(0.0));
fprintf(psfp, "0 -4 rlineto\n");
fprintf(psfp, "stroke\n");
/* number */
fprintf(psfp, "HE%d setfont\n", NORMAL_FONT);
fprintf(psfp, "(%.1f)\n", num);
fprintf(psfp, "dup stringwidth pop\n");
fprintf(psfp, "2 div\n");
fprintf(psfp, "%f exch sub\n", xpage(x));
fprintf(psfp, "%f moveto\n", borderspace);
fprintf(psfp, "show\n");
}
#define N_X_MARKS 7
#define XFUDGE 15
extern floatish xrange;
extern char *sampleunitstring;
static void
XAxis(void)
{
floatish increment, i;
floatish t, x;
floatish legendlen;
/* draw the x axis line */
fprintf(psfp, "%f %f moveto\n", xpage(0.0), ypage(0.0));
fprintf(psfp, "%f 0 rlineto\n", graphwidth);
fprintf(psfp, "%f setlinewidth\n", borderthick);
fprintf(psfp, "stroke\n");
/* draw x axis legend */
fprintf(psfp, "HE%d setfont\n", NORMAL_FONT);
fprintf(psfp, "(%s)\n", sampleunitstring);
fprintf(psfp, "dup stringwidth pop\n");
fprintf(psfp, "%f\n", xpage(0.0) + graphwidth);
fprintf(psfp, "exch sub\n");
fprintf(psfp, "%f moveto\n", borderspace);
fprintf(psfp, "show\n");
/* draw x axis scaling */
increment = Round(xrange / (floatish) N_X_MARKS);
t = graphwidth / xrange;
legendlen = StringSize(sampleunitstring) + (floatish) XFUDGE;
for (i = samplemap[0]; i < samplemap[nsamples - 1]; i += increment) {
x = (i - samplemap[0]) * t;
if (x < (graphwidth - legendlen)) {
XAxisMark(x,i);
}
}
}
static void
YAxisMark(floatish y, floatish num, mkb unit)
{
/* calibration mark */
fprintf(psfp, "%f %f moveto\n", xpage(0.0), ypage(y));
fprintf(psfp, "-4 0 rlineto\n");
fprintf(psfp, "stroke\n");
/* number */
fprintf(psfp, "HE%d setfont\n", NORMAL_FONT);
switch (unit) {
case MEGABYTE :
fprintf(psfp, "(");
CommaPrint(psfp, (intish) (num / 1e6 + 0.5));
fprintf(psfp, "M)\n");
break;
case KILOBYTE :
fprintf(psfp, "(");
CommaPrint(psfp, (intish) (num / 1e3 + 0.5));
fprintf(psfp, "k)\n");
break;
case BYTE:
fprintf(psfp, "(");
CommaPrint(psfp, (intish) (num + 0.5));
fprintf(psfp, ")\n");
break;
}
fprintf(psfp, "dup stringwidth\n");
fprintf(psfp, "2 div\n");
fprintf(psfp, "%f exch sub\n", ypage(y));
fprintf(psfp, "exch\n");
fprintf(psfp, "%f exch sub\n", graphx0 - borderspace);
fprintf(psfp, "exch\n");
fprintf(psfp, "moveto\n");
fprintf(psfp, "show\n");
}
#define N_Y_MARKS 7
#define YFUDGE 15
extern floatish yrange;
extern char *valueunitstring;
static void
YAxis(void)
{
floatish increment, i;
floatish t, y;
floatish legendlen;
mkb unit;
/* draw the y axis line */
fprintf(psfp, "%f %f moveto\n", xpage(0.0), ypage(0.0));
fprintf(psfp, "0 %f rlineto\n", graphheight);
fprintf(psfp, "%f setlinewidth\n", borderthick);
fprintf(psfp, "stroke\n");
/* draw y axis legend */
fprintf(psfp, "gsave\n");
fprintf(psfp, "HE%d setfont\n", NORMAL_FONT);
fprintf(psfp, "(%s)\n", valueunitstring);
fprintf(psfp, "dup stringwidth pop\n");
fprintf(psfp, "%f\n", ypage(0.0) + graphheight);
fprintf(psfp, "exch sub\n");
fprintf(psfp, "%f exch\n", xpage(0.0) - borderspace);
fprintf(psfp, "translate\n");
fprintf(psfp, "90 rotate\n");
fprintf(psfp, "0 0 moveto\n");
fprintf(psfp, "show\n");
fprintf(psfp, "grestore\n");
/* draw y axis scaling */
increment = max( yrange / (floatish) N_Y_MARKS, 1.0);
increment = Round(increment);
if (increment >= 1e6) {
unit = MEGABYTE;
} else if (increment >= 1e3) {
unit = KILOBYTE;
} else {
unit = BYTE;
}
t = graphheight / yrange;
legendlen = StringSize(valueunitstring) + (floatish) YFUDGE;
for (i = 0.0; i <= yrange; i += increment) {
y = i * t;
if (y < (graphheight - legendlen)) {
YAxisMark(y, i, unit);
}
}
}
/*
* Find a "nice round" value to use on the axis.
*/
static floatish OneTwoFive PROTO((floatish)); /* forward */
static floatish
Round(floatish y)
{
int i;
if (y > 10.0) {
for (i = 0; y > 10.0; y /= 10.0, i++)
;
y = OneTwoFive(y);
for ( ; i > 0; y = y * 10.0, i--)
;
} else if (y < 1.0) {
for (i = 0; y < 1.0; y *= 10.0, i++)
;
y = OneTwoFive(y);
for ( ; i > 0; y = y / 10.0, i--)
;
} else {
y = OneTwoFive(y);
}
return (y);
}
/*
* OneTwoFive() -- Runciman's 1,2,5 scaling rule. Argument 1.0 <= y <= 10.0.
*/
static floatish
OneTwoFive(floatish y)
{
if (y > 4.0) {
return (5.0);
} else if (y > 1.0) {
return (2.0);
} else {
return (1.0);
}
}
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