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Don't repeat redundant minima or maxima in the profile plot

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If we have more than four identical depth readings, the old code would see
those as local maxima and minima and print spurious depth values in the
profile plot.

Yes, in real sample data identical readings won't happen - but in
synthetic data they can and there this looks really bogus.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2011-11-04 14:25:20 -07:00
parent d906c82f31
commit edbba678b3
1 changed files with 10 additions and 2 deletions
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12
profile.c
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@ -276,6 +276,7 @@ static void plot_text_samples(struct graphics_context *gc, struct plot_info *pi)
static const text_render_options_t deep = {14, 1.0, 0.2, 0.2, CENTER, TOP};
static const text_render_options_t shallow = {14, 1.0, 0.2, 0.2, CENTER, BOTTOM};
int i;
int last = -1;
for (i = 0; i < pi->nr; i++) {
struct plot_data *entry = pi->entry + i;
@ -283,11 +284,18 @@ static void plot_text_samples(struct graphics_context *gc, struct plot_info *pi)
if (entry->depth < 2000)
continue;
if (entry == entry->max[2])
if ((entry == entry->max[2]) && entry->depth != last) {
render_depth_sample(gc, entry, &deep);
last = entry->depth;
}
if (entry == entry->min[2])
if ((entry == entry->min[2]) && entry->depth != last) {
render_depth_sample(gc, entry, &shallow);
last = entry->depth;
}
if (entry->depth != last)
last = -1;
}
}