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

[ext/subsurface.git] / profile.c

diff --git a/profile.c b/profile.c
index 7caa5da9f98eb40071bbc390bef39ab93fc9eaac..ad158fe8a1f9aaafb40b792f31dea13667594f5f 100644 (file)
--- a/profile.c
+++ b/profile.c
@@ -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;
        }
 }