From adda1c6e86b911c268559a05affd2418767ed239 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Fri, 16 Sep 2011 08:42:27 -0700 Subject: [PATCH] Plot temperature info using 'struct plot_info' rather than the raw dive samples Signed-off-by: Linus Torvalds --- profile.c | 87 +++++++++++++++++++++++++++++++------------------------ 1 file changed, 49 insertions(+), 38 deletions(-) diff --git a/profile.c b/profile.c index 05ed60a..1409f53 100644 --- a/profile.c +++ b/profile.c @@ -14,8 +14,13 @@ int selected_dive = 0; struct plot_info { int nr; int maxtime; + int 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]; @@ -301,25 +306,14 @@ static void plot_depth_profile(struct dive *dive, struct graphics_context *gc, s cairo_stroke(cr); } -static int setup_temperature_limits(struct dive *dive, struct graphics_context *gc, struct plot_info *pi) +static int setup_temperature_limits(struct graphics_context *gc, struct plot_info *pi) { - int i; int maxtime, mintemp, maxtemp; /* Get plot scaling limits */ maxtime = get_maxtime(pi); - mintemp = INT_MAX; - maxtemp = 0; - for (i = 0; i < dive->samples; i++) { - struct sample *sample = dive->sample+i; - int mkelvin = sample->temperature.mkelvin; - if (!mkelvin) - continue; - if (mkelvin > maxtemp) - maxtemp = mkelvin; - if (mkelvin < mintemp) - mintemp = mkelvin; - } + mintemp = pi->mintemp; + maxtemp = pi->maxtemp; gc->leftx = 0; gc->rightx = maxtime; /* Show temperatures in roughly the lower third */ @@ -329,11 +323,12 @@ static int setup_temperature_limits(struct dive *dive, struct graphics_context * return maxtemp > mintemp; } -static void plot_single_temp_text(struct graphics_context *gc, int sec, temperature_t temperature) +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); @@ -345,36 +340,33 @@ static void plot_single_temp_text(struct graphics_context *gc, int sec, temperat plot_text(gc, &tro, sec, temperature.mkelvin, "%d %s", deg, unit); } -static void plot_temperature_text(struct dive *dive, struct graphics_context *gc, - struct plot_info *pi) +static void plot_temperature_text(struct graphics_context *gc, struct plot_info *pi) { int i; int last = 0; - temperature_t last_temperature, last_printed_temp; + int last_temperature = 0, last_printed_temp = 0; - if (!setup_temperature_limits(dive, gc, pi)) + if (!setup_temperature_limits(gc, pi)) return; - for (i = 0; i < dive->samples; i++) { - struct sample *sample = dive->sample+i; - if (sample->time.seconds > dive->duration.seconds) - break; /* let's not plot surface temp events */ - int mkelvin = sample->temperature.mkelvin; + for (i = 0; i < pi->nr; i++) { int sec; + struct plot_data *entry = pi->entry+i; + int mkelvin = entry->temperature; + if (!mkelvin) continue; - last_temperature = sample->temperature; - sec = sample->time.seconds; - if (sec < last) + last_temperature = mkelvin; + sec = entry->sec; + if (sec < last + 300) continue; - last = sec + 300; - plot_single_temp_text(gc,sec,sample->temperature); - last_printed_temp = last_temperature ; + last = sec; + plot_single_temp_text(gc,sec,mkelvin); + last_printed_temp = mkelvin; } /* it would be nice to print the end temperature, if it's different */ - if (last_temperature.mkelvin != last_printed_temp.mkelvin) { - plot_single_temp_text(gc,dive->duration.seconds,last_temperature); - } + if (last_temperature != last_printed_temp) + plot_single_temp_text(gc, last, last_temperature); } static void plot_temperature_profile(struct dive *dive, struct graphics_context *gc, @@ -384,7 +376,7 @@ static void plot_temperature_profile(struct dive *dive, struct graphics_context cairo_t *cr = gc->cr; int last = 0; - if (!setup_temperature_limits(dive, gc, pi)) + if (!setup_temperature_limits(gc, pi)) return; set_source_rgba(gc, 0.2, 0.2, 1.0, 0.8); @@ -647,7 +639,7 @@ static struct plot_info *analyze_plot_info(struct plot_info *pi) * 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, maxtime; int i, nr = dive->samples + 4, sec; @@ -663,15 +655,34 @@ static struct plot_info *depth_plot_info(struct dive *dive) maxtime = 0; lastdepth = -1; for (i = 0; i < dive->samples; i++) { - int depth; + int depth, pressure, temperature; struct sample *sample = dive->sample+i; struct plot_data *entry = pi->entry + i + 2; sec = entry->sec = sample->time.seconds; depth = entry->val = sample->depth.mm; + pressure = entry->pressure = sample->cylinderpressure.mbar; + temperature = entry->temperature = sample->temperature.mkelvin; + if (depth || lastdepth) maxtime = sec; lastdepth = depth; + if (depth > pi->maxdepth) + pi->maxdepth = depth; + + 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; + } } if (lastdepth) maxtime = sec + 20; @@ -687,7 +698,7 @@ static struct plot_info *depth_plot_info(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; @@ -716,7 +727,7 @@ void plot(struct graphics_context *gc, int w, int h, struct dive *dive) plot_depth_profile(dive, gc, pi); /* Text on top of all graphs.. */ - plot_temperature_text(dive, gc, pi); + plot_temperature_text(gc, pi); plot_depth_text(dive, gc, pi); plot_cylinder_pressure_text(dive, gc, pi); -- 2.45.2