int selected_dive = 0;
-/*
- * Cairo scaling really is horribly horribly mis-designed.
- *
- * Which is sad, because I really like Cairo otherwise. But
- * the fact that the line width is scaled with the same scale
- * as the coordinate system is a f*&%ing disaster. So we
- * can't use it, and instead have this butt-ugly wrapper thing..
- */
-struct graphics_context {
- cairo_t *cr;
- double maxx, maxy;
- double scalex, scaley;
-};
-
/* Plot info with smoothing and one-, two- and three-minute minimums and maximums */
struct plot_info {
int nr;
int maxtime;
+ int meandepth, maxdepth;
+ int minpressure, maxpressure;
+ int mintemp, maxtemp;
struct plot_data {
int sec;
+ int pressure, temperature;
+ /* Depth info */
int val;
int smoothed;
struct plot_data *min[3];
#define plot_info_size(nr) (sizeof(struct plot_info) + (nr)*sizeof(struct plot_data))
/* Scale to 0,0 -> maxx,maxy */
-#define SCALE(gc,x,y) (x)*gc->maxx/gc->scalex,(y)*gc->maxy/gc->scaley
+#define SCALEX(gc,x) (((x)-gc->leftx)/(gc->rightx-gc->leftx)*gc->maxx)
+#define SCALEY(gc,y) (((y)-gc->topy)/(gc->bottomy-gc->topy)*gc->maxy)
+#define SCALE(gc,x,y) SCALEX(gc,x),SCALEY(gc,y)
static void move_to(struct graphics_context *gc, double x, double y)
{
cairo_line_to(gc->cr, SCALE(gc, x, y));
}
+static void set_source_rgba(struct graphics_context *gc, double r, double g, double b, double a)
+{
+ if (gc->printer) {
+ /* Black is white and white is black */
+ double sum = r+g+b;
+ if (sum > 2)
+ r = g = b = 0;
+ else if (sum < 1)
+ r = g = b = 1;
+ }
+ cairo_set_source_rgba(gc->cr, r, g, b, a);
+}
+
+static void set_source_rgb(struct graphics_context *gc, double r, double g, double b)
+{
+ set_source_rgba(gc, r, g, b, 1);
+}
+
#define ROUND_UP(x,y) ((((x)+(y)-1)/(y))*(y))
/*
* 30 minutes or 90 ft, just so that small dives show
* up as such.
*/
-static int round_seconds_up(int seconds)
+static int get_maxtime(struct plot_info *pi)
{
- return MAX(30*60, ROUND_UP(seconds, 60*10));
+ int seconds = pi->maxtime;
+ /* min 30 minutes, rounded up to 5 minutes, with at least 2.5 minutes to spare */
+ return MAX(30*60, ROUND_UP(seconds+150, 60*5));
}
-static int round_depth_up(depth_t depth)
+static int get_maxdepth(struct plot_info *pi)
{
- unsigned mm = depth.mm;
- /* Minimum 30m */
+ unsigned mm = pi->maxdepth;
+ /* Minimum 30m, rounded up to 10m, with at least 3m to spare */
return MAX(30000, ROUND_UP(mm+3000, 10000));
}
typedef struct {
int size;
double r,g,b;
- enum {CENTER,LEFT} halign;
- enum {MIDDLE,TOP,BOTTOM} valign;
+ double hpos, vpos;
} text_render_options_t;
+#define RIGHT (-1.0)
+#define CENTER (-0.5)
+#define LEFT (0.0)
+
+#define TOP (1)
+#define MIDDLE (0)
+#define BOTTOM (-1)
+
static void plot_text(struct graphics_context *gc, const text_render_options_t *tro,
double x, double y, const char *fmt, ...)
{
cairo_t *cr = gc->cr;
+ cairo_font_extents_t fe;
cairo_text_extents_t extents;
double dx, dy;
char buffer[80];
va_end(args);
cairo_set_font_size(cr, tro->size);
+ cairo_font_extents(cr, &fe);
cairo_text_extents(cr, buffer, &extents);
- dx = 0;
- switch (tro->halign) {
- case CENTER:
- dx = -(extents.width/2 + extents.x_bearing);
- break;
- case LEFT:
- dx = 0;
- break;
- }
- switch (tro->valign) {
- case TOP:
- dy = extents.height * 1.2;
- break;
- case BOTTOM:
- dy = -extents.height * 0.8;
- break;
- case MIDDLE:
- dy = 0;
- break;
- }
+ dx = tro->hpos * extents.width + extents.x_bearing;
+ dy = tro->vpos * extents.height + fe.descent;
move_to(gc, x, y);
cairo_rel_move_to(cr, dx, dy);
cairo_text_path(cr, buffer);
- cairo_set_source_rgb(cr, 0, 0, 0);
+ set_source_rgb(gc, 0, 0, 0);
cairo_stroke(cr);
move_to(gc, x, y);
cairo_rel_move_to(cr, dx, dy);
- cairo_set_source_rgb(cr, tro->r, tro->g, tro->b);
+ set_source_rgb(gc, tro->r, tro->g, tro->b);
cairo_show_text(cr, buffer);
}
}
}
-static void plot_depth_text(struct dive *dive, struct graphics_context *gc, struct plot_info *pi)
+static void plot_depth_text(struct graphics_context *gc, struct plot_info *pi)
{
int maxtime, maxdepth;
/* Get plot scaling limits */
- maxtime = round_seconds_up(dive->duration.seconds);
- maxdepth = round_depth_up(dive->maxdepth);
+ maxtime = get_maxtime(pi);
+ maxdepth = get_maxdepth(pi);
- gc->scalex = maxtime;
- gc->scaley = maxdepth;
+ gc->leftx = 0; gc->rightx = maxtime;
+ gc->topy = 0; gc->bottomy = maxdepth;
plot_text_samples(gc, pi);
}
static void plot_minmax_profile(struct graphics_context *gc, struct plot_info *pi)
{
+ if (gc->printer)
+ return;
plot_minmax_profile_minute(gc, pi, 2, 0.1);
plot_minmax_profile_minute(gc, pi, 1, 0.1);
plot_minmax_profile_minute(gc, pi, 0, 0.1);
}
-static void plot_depth_profile(struct dive *dive, struct graphics_context *gc, struct plot_info *pi)
+static void plot_depth_profile(struct graphics_context *gc, struct plot_info *pi)
{
int i;
cairo_t *cr = gc->cr;
struct plot_data *entry;
int maxtime, maxdepth, marker;
- cairo_set_line_width(gc->cr, 2);
-
/* Get plot scaling limits */
- maxtime = round_seconds_up(dive->duration.seconds);
- maxdepth = round_depth_up(dive->maxdepth);
+ maxtime = get_maxtime(pi);
+ maxdepth = get_maxdepth(pi);
/* Time markers: every 5 min */
- gc->scalex = maxtime;
- gc->scaley = 1.0;
+ gc->leftx = 0; gc->rightx = maxtime;
+ gc->topy = 0; gc->bottomy = 1.0;
for (i = 5*60; i < maxtime; i += 5*60) {
move_to(gc, i, 0);
line_to(gc, i, 1);
}
/* Depth markers: every 30 ft or 10 m*/
- gc->scalex = 1.0;
- gc->scaley = maxdepth;
+ gc->leftx = 0; gc->rightx = 1.0;
+ gc->topy = 0; gc->bottomy = maxdepth;
switch (output_units.length) {
case METERS: marker = 10000; break;
case FEET: marker = 9144; break; /* 30 ft */
}
- cairo_set_source_rgba(cr, 1, 1, 1, 0.5);
+ set_source_rgba(gc, 1, 1, 1, 0.5);
for (i = marker; i < maxdepth; i += marker) {
move_to(gc, 0, i);
line_to(gc, 1, i);
cairo_stroke(cr);
/* Show mean depth */
- cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.40);
- move_to(gc, 0, dive->meandepth.mm);
- line_to(gc, 1, dive->meandepth.mm);
+ set_source_rgba(gc, 1, 0.2, 0.2, 0.40);
+ move_to(gc, 0, pi->meandepth);
+ line_to(gc, 1, pi->meandepth);
cairo_stroke(cr);
- gc->scalex = maxtime;
+ gc->leftx = 0; gc->rightx = maxtime;
plot_smoothed_profile(gc, pi);
plot_minmax_profile(gc, pi);
entry = pi->entry;
- cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
+ set_source_rgba(gc, 1, 0.2, 0.2, 0.80);
begins = entry->sec;
move_to(gc, entry->sec, entry->val);
for (i = 1; i < pi->nr; i++) {
line_to(gc, sec, depth);
}
}
- gc->scaley = 1.0;
+ gc->topy = 0; gc->bottomy = 1.0;
line_to(gc, MIN(sec,maxtime), 0);
line_to(gc, begins, 0);
cairo_close_path(cr);
- cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.20);
+ set_source_rgba(gc, 1, 0.2, 0.2, 0.20);
cairo_fill_preserve(cr);
- cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
+ set_source_rgba(gc, 1, 0.2, 0.2, 0.80);
cairo_stroke(cr);
}
-/* gets both the actual start and end pressure as well as the scaling factors */
-static int get_cylinder_pressure_range(struct dive *dive, struct graphics_context *gc,
- pressure_t *startp, pressure_t *endp)
+static int setup_temperature_limits(struct graphics_context *gc, struct plot_info *pi)
{
- int i;
- int min, max;
+ int maxtime, mintemp, maxtemp;
- gc->scalex = round_seconds_up(dive->duration.seconds);
+ /* Get plot scaling limits */
+ maxtime = get_maxtime(pi);
+ mintemp = pi->mintemp;
+ maxtemp = pi->maxtemp;
- max = 0;
- min = 5000000;
- if (startp)
- startp->mbar = endp->mbar = 0;
+ gc->leftx = 0; gc->rightx = maxtime;
+ /* Show temperatures in roughly the lower third */
+ gc->topy = maxtemp + (maxtemp - mintemp)*2;
+ gc->bottomy = mintemp - (maxtemp - mintemp)/2;
- for (i = 0; i < dive->samples; i++) {
- int mbar;
- struct sample *sample = dive->sample + i;
+ return maxtemp > mintemp;
+}
- /* FIXME! We only track cylinder 0 right now */
- if (sample->cylinderindex)
+static void plot_single_temp_text(struct graphics_context *gc, int sec, int mkelvin)
+{
+ int deg;
+ const char *unit;
+ static const text_render_options_t tro = {12, 0.2, 0.2, 1.0, LEFT, TOP};
+ temperature_t temperature = { mkelvin };
+
+ if (output_units.temperature == FAHRENHEIT) {
+ deg = to_F(temperature);
+ unit = "F";
+ } else {
+ deg = to_C(temperature);
+ unit = "C";
+ }
+ plot_text(gc, &tro, sec, temperature.mkelvin, "%d %s", deg, unit);
+}
+
+static void plot_temperature_text(struct graphics_context *gc, struct plot_info *pi)
+{
+ int i;
+ int last = 0, sec = 0;
+ int last_temperature = 0, last_printed_temp = 0;
+
+ if (!setup_temperature_limits(gc, pi))
+ return;
+
+ for (i = 0; i < pi->nr; i++) {
+ struct plot_data *entry = pi->entry+i;
+ int mkelvin = entry->temperature;
+
+ if (!mkelvin)
continue;
- mbar = sample->cylinderpressure.mbar;
- if (!mbar)
+ last_temperature = mkelvin;
+ sec = entry->sec;
+ if (sec < last + 300)
continue;
- if (mbar < min)
- min = mbar;
- if (mbar > max)
- max = mbar;
+ last = sec;
+ plot_single_temp_text(gc,sec,mkelvin);
+ last_printed_temp = mkelvin;
}
- if (startp)
- startp->mbar = max;
- if (endp)
- endp->mbar = min;
- if (!max)
- return 0;
- gc->scaley = max * 1.5;
- return 1;
+ /* it would be nice to print the end temperature, if it's different */
+ if (abs(last_temperature - last_printed_temp) > 500)
+ plot_single_temp_text(gc, sec, last_temperature);
}
-static void plot_cylinder_pressure(struct dive *dive, struct graphics_context *gc)
+static void plot_temperature_profile(struct graphics_context *gc, struct plot_info *pi)
{
- int i, sec = -1;
+ int i;
+ cairo_t *cr = gc->cr;
+ int last = 0;
- if (!get_cylinder_pressure_range(dive, gc, NULL, NULL))
+ if (!setup_temperature_limits(gc, pi))
+ return;
+
+ set_source_rgba(gc, 0.2, 0.2, 1.0, 0.8);
+ for (i = 0; i < pi->nr; i++) {
+ struct plot_data *entry = pi->entry + i;
+ int mkelvin = entry->temperature;
+ int sec = entry->sec;
+ if (!mkelvin) {
+ if (!last)
+ continue;
+ mkelvin = last;
+ }
+ if (last)
+ line_to(gc, sec, mkelvin);
+ else
+ move_to(gc, sec, mkelvin);
+ last = mkelvin;
+ }
+ cairo_stroke(cr);
+}
+
+/* gets both the actual start and end pressure as well as the scaling factors */
+static int get_cylinder_pressure_range(struct graphics_context *gc, struct plot_info *pi)
+{
+ gc->leftx = 0;
+ gc->rightx = get_maxtime(pi);
+
+ gc->topy = 0; gc->bottomy = pi->maxpressure * 1.5;
+ return pi->maxpressure != 0;
+}
+
+static void plot_cylinder_pressure(struct graphics_context *gc, struct plot_info *pi)
+{
+ int i;
+
+ if (!get_cylinder_pressure_range(gc, pi))
return;
cairo_set_source_rgba(gc->cr, 0.2, 1.0, 0.2, 0.80);
- move_to(gc, 0, dive->cylinder[0].start.mbar);
- for (i = 1; i < dive->samples; i++) {
+ move_to(gc, 0, pi->maxpressure);
+ for (i = 1; i < pi->nr; i++) {
int mbar;
- struct sample *sample = dive->sample + i;
+ struct plot_data *entry = pi->entry + i;
- mbar = sample->cylinderpressure.mbar;
+ mbar = entry->pressure;
if (!mbar)
continue;
- sec = sample->time.seconds;
- if (sec <= dive->duration.seconds)
- line_to(gc, sec, mbar);
+ line_to(gc, entry->sec, mbar);
}
- /*
- * We may have "surface time" events, in which case we don't go
- * back to dive duration
- */
- if (sec < dive->duration.seconds)
- line_to(gc, dive->duration.seconds, dive->cylinder[0].end.mbar);
+ line_to(gc, pi->maxtime, pi->minpressure);
cairo_stroke(gc->cr);
}
static void plot_info(struct dive *dive, struct graphics_context *gc)
{
- text_render_options_t tro = {10, 0.2, 1.0, 0.2, LEFT, TOP};
+ text_render_options_t tro = {10, 0.2, 1.0, 0.2, RIGHT, BOTTOM};
const double liters_per_cuft = 28.317;
const char *unit, *desc;
double airuse;
airuse /= liters_per_cuft;
break;
}
- plot_text(gc, &tro, 0.8, 0.8, "vol: %4.2f %s", airuse, unit);
+ tro.vpos = -1.0;
+ plot_text(gc, &tro, 0.98, 0.98, "vol: %4.2f %s", airuse, unit);
+
+ tro.vpos = -2.2;
if (dive->duration.seconds) {
double pressure = 1 + (dive->meandepth.mm / 10000.0);
double sac = airuse / pressure * 60 / dive->duration.seconds;
- plot_text(gc, &tro, 0.8, 0.85, "SAC: %4.2f %s/min", sac, unit);
+ plot_text(gc, &tro, 0.98, 0.98, "SAC: %4.2f %s/min", sac, unit);
}
+
+ tro.vpos = -3.4;
desc = dive->cylinder[0].type.description;
if (desc || dive->cylinder[0].gasmix.o2.permille) {
int o2 = dive->cylinder[0].gasmix.o2.permille / 10;
desc = "";
if (!o2)
o2 = 21;
- plot_text(gc, &tro, 0.8, 0.9, "%s (%d%%)", desc, o2);
+ plot_text(gc, &tro, 0.98, 0.98, "%s (%d%%)", desc, o2);
}
}
-static void plot_cylinder_pressure_text(struct dive *dive, struct graphics_context *gc)
+static int mbar_to_PSI(int mbar)
{
- pressure_t startp, endp;
+ pressure_t p = {mbar};
+ return to_PSI(p);
+}
- if (get_cylinder_pressure_range(dive, gc, &startp, &endp)) {
+static void plot_cylinder_pressure_text(struct graphics_context *gc, struct plot_info *pi)
+{
+ if (get_cylinder_pressure_range(gc, pi)) {
int start, end;
const char *unit = "bar";
switch (output_units.pressure) {
case PASCAL:
- start = startp.mbar * 100;
- end = startp.mbar * 100;
+ start = pi->maxpressure * 100;
+ end = pi->minpressure * 100;
unit = "pascal";
break;
case BAR:
- start = (startp.mbar + 500) / 1000;
- end = (endp.mbar + 500) / 1000;
+ start = (pi->maxpressure + 500) / 1000;
+ end = (pi->minpressure + 500) / 1000;
unit = "bar";
break;
case PSI:
- start = to_PSI(startp);
- end = to_PSI(endp);
+ start = mbar_to_PSI(pi->maxpressure);
+ end = mbar_to_PSI(pi->minpressure);
unit = "psi";
break;
}
text_render_options_t tro = {10, 0.2, 1.0, 0.2, LEFT, TOP};
- plot_text(gc, &tro, 0, startp.mbar, "%d %s", start, unit);
- plot_text(gc, &tro, dive->duration.seconds, endp.mbar,
+ plot_text(gc, &tro, 0, pi->maxpressure, "%d %s", start, unit);
+ plot_text(gc, &tro, pi->maxtime, pi->minpressure,
"%d %s", end, unit);
}
}
int i;
int nr = pi->nr;
+ /* Do pressure min/max based on the non-surface data */
+ for (i = 0; i < nr; i++) {
+ struct plot_data *entry = pi->entry+i;
+ int pressure = entry->pressure;
+ int temperature = entry->temperature;
+
+ if (pressure) {
+ if (!pi->minpressure || pressure < pi->minpressure)
+ pi->minpressure = pressure;
+ if (pressure > pi->maxpressure)
+ pi->maxpressure = pressure;
+ }
+
+ if (temperature) {
+ if (!pi->mintemp || temperature < pi->mintemp)
+ pi->mintemp = temperature;
+ if (temperature > pi->maxtemp)
+ pi->maxtemp = temperature;
+ }
+ }
+
/* Smoothing function: 5-point triangular smooth */
for (i = 2; i < nr-2; i++) {
struct plot_data *entry = pi->entry+i;
* sides, so that you can do end-points without having to worry
* about it.
*/
-static struct plot_info *depth_plot_info(struct dive *dive)
+static struct plot_info *create_plot_info(struct dive *dive)
{
+ int lastdepth, lastindex;
int i, nr = dive->samples + 4, sec;
size_t alloc_size = plot_info_size(nr);
struct plot_info *pi;
memset(pi, 0, alloc_size);
pi->nr = nr;
sec = 0;
+ lastindex = 0;
+ lastdepth = -1;
for (i = 0; i < dive->samples; i++) {
+ int depth;
struct sample *sample = dive->sample+i;
struct plot_data *entry = pi->entry + i + 2;
sec = entry->sec = sample->time.seconds;
- entry->val = sample->depth.mm;
+ depth = entry->val = sample->depth.mm;
+ entry->pressure = sample->cylinderpressure.mbar;
+ entry->temperature = sample->temperature.mkelvin;
+
+ if (depth || lastdepth)
+ lastindex = i+2;
+
+ lastdepth = depth;
+ if (depth > pi->maxdepth)
+ pi->maxdepth = depth;
}
+ if (lastdepth)
+ lastindex = i + 2;
/* Fill in the last two entries with empty values but valid times */
i = dive->samples + 2;
pi->entry[i].sec = sec + 20;
pi->entry[i+1].sec = sec + 40;
+ pi->nr = lastindex+1;
+ pi->maxtime = pi->entry[lastindex].sec;
+
+ pi->minpressure = dive->cylinder[0].end.mbar;
+ pi->maxpressure = dive->cylinder[0].start.mbar;
+
+ pi->meandepth = dive->meandepth.mm;
+
return analyze_plot_info(pi);
}
-static void plot(struct graphics_context *gc, int w, int h, struct dive *dive)
+void plot(struct graphics_context *gc, int w, int h, struct dive *dive)
{
double topx, topy;
- struct plot_info *pi = depth_plot_info(dive);
+ struct plot_info *pi = create_plot_info(dive);
topx = w / 20.0;
topy = h / 20.0;
cairo_translate(gc->cr, topx, topy);
+ cairo_set_line_width(gc->cr, 2);
+ cairo_set_line_cap(gc->cr, CAIRO_LINE_CAP_ROUND);
+ cairo_set_line_join(gc->cr, CAIRO_LINE_JOIN_ROUND);
/*
* We can use "cairo_translate()" because that doesn't
gc->maxx = (w - 2*topx);
gc->maxy = (h - 2*topy);
+ /* Temperature profile */
+ plot_temperature_profile(gc, pi);
+
/* Cylinder pressure plot */
- plot_cylinder_pressure(dive, gc);
+ plot_cylinder_pressure(gc, pi);
/* Depth profile */
- plot_depth_profile(dive, gc, pi);
+ plot_depth_profile(gc, pi);
/* Text on top of all graphs.. */
- plot_depth_text(dive, gc, pi);
- plot_cylinder_pressure_text(dive, gc);
+ plot_temperature_text(gc, pi);
+ plot_depth_text(gc, pi);
+ plot_cylinder_pressure_text(gc, pi);
/* And info box in the lower right corner.. */
- gc->scalex = gc->scaley = 1.0;
+ gc->leftx = 0; gc->rightx = 1.0;
+ gc->topy = 0; gc->bottomy = 1.0;
plot_info(dive, gc);
/* Bounding box last */
- cairo_set_source_rgb(gc->cr, 1, 1, 1);
+ set_source_rgb(gc, 1, 1, 1);
move_to(gc, 0, 0);
line_to(gc, 0, 1);
line_to(gc, 1, 1);
static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
{
struct dive *dive = current_dive;
- struct graphics_context gc;
+ struct graphics_context gc = { .printer = 0 };
int w,h;
w = widget->allocation.width;
h = widget->allocation.height;
gc.cr = gdk_cairo_create(widget->window);
- cairo_set_source_rgb(gc.cr, 0, 0, 0);
+ set_source_rgb(&gc, 0, 0, 0);
cairo_paint(gc.cr);
if (dive)
GtkWidget *da;
da = gtk_drawing_area_new();
- gtk_widget_set_size_request(da, 450, 350);
+ gtk_widget_set_size_request(da, 350, 250);
g_signal_connect(da, "expose_event", G_CALLBACK(expose_event), NULL);
return da;
projects / ext / subsurface.git / blobdiff