Implemented O(log(N)) wave plotting

[pulseview.git] / logicsignal.cpp

diff --git a/logicsignal.cpp b/logicsignal.cpp
index 79a27ddd05c97996cc6f7332b3b6b3a7ab4e4058..69d58cb1cbc70abf9f540911ab8aefe202ba72e1 100644 (file)
--- a/logicsignal.cpp
+++ b/logicsignal.cpp
@@ -33,8 +33,6 @@
 using namespace boost;
 using namespace std;
 
-const float Log2 = logf(2.0f);
-
 const float LogicSignal::Margin = 10.0f;
 
 const float LogicSignal::EdgeColour[3] =       {0.50f, 0.50f, 0.50f};
@@ -90,13 +88,11 @@ void LogicSignal::paint(QGLWidget &widget, const QRect &rect,
        const double samples_per_pixel = samplerate * scale;
        const double start = samplerate * (offset - start_time);
        const double end = start + samples_per_pixel * rect.width();
-       const int64_t quantization_length = 1LL << (int64_t)floorf(
-               max(logf((float)samples_per_pixel) / Log2, 0.0f));
 
        snapshot->get_subsampled_edges(edges,
                min(max((int64_t)floor(start), (int64_t)0), last_sample),
                min(max((int64_t)ceil(end), (int64_t)0), last_sample),
-               quantization_length, _probe_index);
+               samples_per_pixel, _probe_index);
 
        // Paint the edges
        const unsigned int edge_point_count = (edges.size() - 2) * 2;