class Shape {
static const int margin = 1;
static const int nb_max_pixels = Vignette::width * Vignette::height;
+
+#if __cplusplus >= 201103L
+ static constexpr scalar_t gap_max = 0.25;
+#else
static const scalar_t gap_max = 0.25;
+#endif
+
int n_pixels1, n_pixels2, n_pixels3, n_pixels4;
int nb_pixels;
scalar_t xc, yc;