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Fix cylinder printout information

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The cylinder information in the printouts was wrong in many ways. As
Dirk noted, it didn't work at all for air-integrated computers that
had the pressures in the samples, but the math was also confusing and
wrong.

This should fix it.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Linus Torvalds 2013-01-03 12:40:25 -08:00 committed by Dirk Hohndel
parent 6f8e9bcff3
commit 3c5ebfe036
1 changed files with 32 additions and 14 deletions
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46
print.c
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@ -187,13 +187,21 @@ static void print_ean_trimix (cairo_t *cr, PangoLayout *layout, int O2, int He){
pango_cairo_show_layout(cr, layout);
}
static unsigned start_pressure(cylinder_t *cyl)
{
return cyl->start.mbar ? : cyl->sample_start.mbar;
}
static unsigned end_pressure(cylinder_t *cyl)
{
return cyl->end.mbar ? : cyl->sample_end.mbar;
}
/* Print the tank data */
static void print_tanks (struct dive *dive, cairo_t *cr, int maxwidth, int maxheight,
int height, int tank_count, int first_tank, PangoFontDescription *font)
{
int curwidth, decimals, n, i, counter, cyl_press, cyl_end;
double cyl_cap, cyl_cons_gas;
const char *unit_vol, *unit_press;
int curwidth, n, i, counter;
char buffer[80], dataheader1[3][80]= { N_("Cylinder"), N_("Gasmix"), N_("Gas Used")};
PangoLayout *layout;
@ -219,13 +227,26 @@ static void print_tanks (struct dive *dive, cairo_t *cr, int maxwidth, int maxhe
/* Then the cylinder stuff */
n = first_tank;
counter = 0;
while ( n < tank_count && n < first_tank + 4){
while ( n < tank_count && n < first_tank + 4) {
int decimals;
const char *unit;
double gas_usage;
cylinder_t *cyl = dive->cylinder + n;
cairo_translate (cr, 0, height / (double) PANGO_SCALE);
cairo_move_to(cr, 0, 0);
cyl_cap = get_volume_units(dive->cylinder[n].type.size.mliter, &decimals, &unit_vol);
cyl_press= get_pressure_units(dive->cylinder[n].start.mbar, &unit_press);
cyl_end= get_pressure_units(dive->cylinder[n].end.mbar, &unit_press);
cyl_cons_gas = (cyl_press - cyl_end) * cyl_cap;
/* Get the cylinder gas use in mbar */
gas_usage = start_pressure(cyl) - end_pressure(cyl);
/* Can we turn it into a volume? */
if (cyl->type.size.mliter) {
gas_usage = bar_to_atm(gas_usage / 1000);
gas_usage *= dive->cylinder[n].type.size.mliter;
gas_usage = get_volume_units(gas_usage, &decimals, &unit);
} else {
gas_usage = get_pressure_units(gas_usage, &unit);
}
curwidth = 0;
cairo_move_to (cr, curwidth / (double) PANGO_SCALE, 0);
@ -241,13 +262,10 @@ static void print_tanks (struct dive *dive, cairo_t *cr, int maxwidth, int maxhe
curwidth += (maxwidth/ 3);
cairo_move_to(cr, curwidth / (double) PANGO_SCALE, 0);
if (prefs.output_units.pressure == PSI) {
cyl_cons_gas = (psi_to_bar(cyl_press) - psi_to_bar(cyl_end)) * cyl_cap;
}
snprintf(buffer, sizeof(buffer), _("%.*f %s\n"),
decimals,
cyl_cons_gas,
unit_vol);
gas_usage,
unit);
pango_layout_set_text(layout, buffer, -1);
pango_cairo_show_layout(cr, layout);
curwidth += (maxwidth/ 3);
@ -383,7 +401,7 @@ static void show_dive_tanks(struct dive *dive, cairo_t *cr, double w,
/* We need to know how many cylinders we used*/
for ( tank_count = 0; tank_count < MAX_CYLINDERS; tank_count++ ){
if (dive->cylinder[tank_count].start.mbar == 0) {
if (cylinder_nodata(dive->cylinder+tank_count)) {
break;
}
}