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-rw-r--r--tracker-pt/camera.cpp5
1 files changed, 3 insertions, 2 deletions
diff --git a/tracker-pt/camera.cpp b/tracker-pt/camera.cpp
index 5e00499c..263d6617 100644
--- a/tracker-pt/camera.cpp
+++ b/tracker-pt/camera.cpp
@@ -22,7 +22,7 @@ QString Camera::get_active_name() const
return active_name;
}
-void CamInfo::get_focal_length(double& fx) const
+double CamInfo::get_focal_length() const
{
const double diag_len = sqrt(double(res_x*res_x + res_y*res_y));
const double aspect_x = res_x / diag_len;
@@ -30,7 +30,8 @@ void CamInfo::get_focal_length(double& fx) const
const double diag_fov = fov * M_PI/180;
const double fov_x = 2*atan(tan(diag_fov*.5) * aspect_x);
//const double fov_y = 2*atan(tan(diag_fov*.5) * aspect_y);
- fx = .5 / tan(fov_x * .5);
+ const double fx = .5 / tan(fov_x * .5);
+ return fx;
//fy = .5 / tan(fov_y * .5);
//static bool once = false; if (!once) { once = true; qDebug() << "f" << ret << "fov" << (fov * 180/M_PI); }
}