summaryrefslogtreecommitdiffhomepage
diff options
context:
space:
mode:
authorStanislaw Halik <sthalik@misaki.pl>2021-09-29 15:53:06 +0200
committerStanislaw Halik <sthalik@misaki.pl>2021-09-29 15:54:05 +0200
commitf18067ff83e8989f80c7f521c40e6fcb5fa8b451 (patch)
tree95195af79926dc3164fb3f07f52ceebcdd634b33
parent81e74c714f68d646009397ae7dca0bd3e7cd3fe5 (diff)
spline: make sure zeros stay zeros
Issue: #1341
-rw-r--r--spline/spline.cpp11
1 files changed, 11 insertions, 0 deletions
diff --git a/spline/spline.cpp b/spline/spline.cpp
index 917300c2..7017c93e 100644
--- a/spline/spline.cpp
+++ b/spline/spline.cpp
@@ -249,6 +249,17 @@ void spline::update_interp_data() const
last = data[i];
}
+ // make sure empty places stay empty (see #1341)
+ if (auto it = std::find_if(list.cbegin(), list.cend(),
+ [](QPointF x) { return x.x() >= 1e-6 && x.y() >= 1e-6; });
+ it != list.cend() && it != list.cbegin())
+ {
+ it--;
+ unsigned max = std::clamp((unsigned)iround(it->x() * c), 0u, value_count-1);
+
+ for (unsigned x = 0; x < max; x++)
+ data[x] = 0;
+ }
#ifdef __clang__
# pragma clang diagnostic pop
#endif