tracker/{pt,wii}: skip more widget drawing when minimized

4 files changed, 13 insertions, 7 deletions

diff --git a/tracker-pt/ftnoir_tracker_pt.cpp b/tracker-pt/ftnoir_tracker_pt.cpp
index 255330c4..570d76c4 100644
--- a/tracker-pt/ftnoir_tracker_pt.cpp
+++ b/tracker-pt/ftnoir_tracker_pt.cpp
@@ -74,7 +74,7 @@ void Tracker_PT::run()
             if (preview_visible)
                 *preview_frame = *frame;
 
-            point_extractor->extract_points(*frame, *preview_frame, points);
+            point_extractor->extract_points(*frame, *preview_frame, preview_visible, points);
             point_count.store(points.size(), std::memory_order_relaxed);
 
             const bool success = points.size() >= PointModel::N_POINTS;
diff --git a/tracker-pt/module/point_extractor.cpp b/tracker-pt/module/point_extractor.cpp
index 5e57ef34..2f84bf86 100644
--- a/tracker-pt/module/point_extractor.cpp
+++ b/tracker-pt/module/point_extractor.cpp
@@ -282,7 +282,10 @@ static void draw_blobs(cv::Mat& preview_frame, const blob* blobs, unsigned nblob
     }
 }
 
-void PointExtractor::extract_points(const pt_frame& frame_, pt_preview& preview_frame_, std::vector<vec2>& points)
+void PointExtractor::extract_points(const pt_frame& frame_,
+                                    pt_preview& preview_frame_,
+                                    bool preview_visible,
+                                    std::vector<vec2>& points)
 {
     const cv::Mat& frame = frame_.as_const<Frame>()->mat;
 
@@ -402,9 +405,10 @@ end:
         b.pos[1] = pos[1] + rect.y;
     }
 
-    draw_blobs(preview_frame_.as<Frame>()->mat,
-               blobs.data(), blobs.size(),
-               frame_gray.size());
+    if (preview_visible)
+        draw_blobs(preview_frame_.as<Frame>()->mat,
+                   blobs.data(), blobs.size(),
+                   frame_gray.size());
 
 
     // End of mean shift code. At this point, blob positions are updated with hopefully less noisy less biased values.
diff --git a/tracker-pt/module/point_extractor.h b/tracker-pt/module/point_extractor.h
index 9c97b6ce..ab906414 100644
--- a/tracker-pt/module/point_extractor.h
+++ b/tracker-pt/module/point_extractor.h
@@ -33,7 +33,9 @@ class PointExtractor final : public pt_point_extractor
 public:
     // extracts points from frame and draws some processing info into frame, if draw_output is set
     // dt: time since last call in seconds
-    void extract_points(const pt_frame& frame, pt_preview& preview_frame, std::vector<vec2>& points) override;
+    void extract_points(const pt_frame& frame,
+                        pt_preview& preview_frame, bool preview_visible,
+                        std::vector<vec2>& points) override;
     PointExtractor(const QString& module_name);
 private:
     static constexpr int max_blobs = 16;
diff --git a/tracker-pt/pt-api.hpp b/tracker-pt/pt-api.hpp
index ded5ef57..07a49c45 100644
--- a/tracker-pt/pt-api.hpp
+++ b/tracker-pt/pt-api.hpp
@@ -97,7 +97,7 @@ struct pt_point_extractor : pt_pixel_pos_mixin
 
     pt_point_extractor();
     virtual ~pt_point_extractor();
-    virtual void extract_points(const pt_frame& image, pt_preview& preview_frame, std::vector<vec2>& points) = 0;
+    virtual void extract_points(const pt_frame& image, pt_preview& preview_frame, bool preview_visible, std::vector<vec2>& points) = 0;
 
     static f threshold_radius_value(int w, int h, int threshold);
 };