tracker/pt: fix out-of-bounds write

The input array has exactly 3 points. The vector has potentially more
points, sorted by circularity.

Spotted-by: @DaMichel
Closes #380

1 files changed, 2 insertions, 2 deletions

diff --git a/tracker-pt/point_tracker.cpp b/tracker-pt/point_tracker.cpp
index 1fb4128e..51f10470 100644
--- a/tracker-pt/point_tracker.cpp
+++ b/tracker-pt/point_tracker.cpp
@@ -37,7 +37,7 @@ void PointModel::get_d_order(const std::vector<cv::Vec2f>& points, int d_order[]
     // fit line to orthographically projected points
     std::vector<std::pair<float,int>> d_vals;
     // get sort indices with respect to d scalar product
-    for (unsigned i = 0; i<points.size(); ++i)
+    for (unsigned i = 0; i < PointModel::N_POINTS; ++i)
         d_vals.push_back(std::pair<float, int>(d.dot(points[i]), i));
 
     std::sort(d_vals.begin(),
@@ -45,7 +45,7 @@ void PointModel::get_d_order(const std::vector<cv::Vec2f>& points, int d_order[]
               d_vals_sort
               );
 
-    for (unsigned i = 0; i<points.size(); ++i)
+    for (unsigned i = 0; i < PointModel::N_POINTS; ++i)
         d_order[i] = d_vals[i].second;
 }