tracker/pt: resize the camera feed, not the preview

This makes the point size text and point crosses not alias due to the
resize.

Due to nice pixel coordinate system, the cross-drawing lambda only needs
minimal changes.

1 files changed, 4 insertions, 1 deletions

diff --git a/tracker-pt/ftnoir_tracker_pt.h b/tracker-pt/ftnoir_tracker_pt.h
index fcf74bff..e050f4ad 100644
--- a/tracker-pt/ftnoir_tracker_pt.h
+++ b/tracker-pt/ftnoir_tracker_pt.h
@@ -26,6 +26,7 @@
 #include <QMutexLocker>
 #include <QTime>
 #include <QLayout>
+#include <QSize>
 #include <atomic>
 #include <memory>
 #include <vector>
@@ -74,9 +75,11 @@ private:
 
     settings_pt s;
     Timer time;
-    cv::Mat frame;
+    cv::Mat frame, preview_frame;
     std::vector<vec2> points;
 
+    QSize preview_size;
+
     volatile unsigned point_count;
     volatile unsigned char commands;
     volatile bool ever_success;