Уточнить обработку плотных трендов и восстановление сигналов

c/set-protocol/src/set_plot.c

@@ -7,6 +7,9 @@
 #include "set_plot.h"
 #include <math.h>
 
+/* Allow sample-level X navigation in multi-million-point recordings. */
+#define MIN_VIEW_WIDTH (1.0 / 10000000)
+
 static double clamp(double v, double lo, double hi) { return fmin(hi, fmax(lo, v)); }
 static int finite_values(const double *v, size_t n) {
     size_t i;
@@ -23,12 +26,12 @@ size_t set_plot_eval(uint32_t op, const double *v, size_t n, double *out, size_t
         cap < (op == SET_PLOT_TRANSFORM || op == SET_PLOT_LIMITS ? 4U : 1U)) return 0;
     if (op == SET_PLOT_TRANSFORM) {
         double w, h, fx, fy;
-        if (!finite_values(v, 4) || v[2] < 1.0/128 || v[2] > 1 ||
+        if (!finite_values(v, 4) || v[2] < MIN_VIEW_WIDTH || v[2] > 1 ||
             v[3] < 1.0/128 || v[3] > 1 || v[0] < 0 || v[1] < 0 ||
             v[0] + v[2] > 1.000000000001 || v[1] + v[3] > 1.000000000001) return 0;
         out[0] = v[0]; out[1] = v[1]; out[2] = v[2]; out[3] = v[3];
         if (!finite_values(v + 4, 6) || v[4] <= 0 || v[5] <= 0) return 4;
-        w = clamp(v[2] / v[4], 1.0/128, 1);
+        w = clamp(v[2] / v[4], MIN_VIEW_WIDTH, 1);
         h = clamp(v[3] / v[5], 1.0/128, 1);
         fx = clamp(v[8], 0, 1); fy = clamp(v[9], 0, 1);
         out[0] = clamp(v[0] + (v[2] - w) * fx - v[6] * w, 0, 1 - w);