1 files changed, 0 insertions, 89 deletions
diff --git a/tracker-tobii-eyex/head-tracking.cpp b/tracker-tobii-eyex/head-tracking.cpp
deleted file mode 100644
index 77394f11..00000000
--- a/tracker-tobii-eyex/head-tracking.cpp
+++ /dev/null
@@ -1,89 +0,0 @@
-#include "tobii-eyex.hpp"
-#include "compat/math.hpp"
-#include "compat/math-imports.hpp"
-
-real tobii_eyex_tracker::gain(real x)
-{
-    // simple sigmoid
-    x = clamp(x * 6, -6, 6);
-    x = 1 / (1 + exp(-x));
-    x = x * 2 - 1;
-    return clamp(x, -1, 1);
-}
-
-void tobii_eyex_tracker::data(double* data)
-{
-    real px, py, max_x, max_y;
-    bool fresh;
-
-    {
-        QMutexLocker l(&global_state_mtx);
-
-        if (!dev_state.is_valid())
-            return;
-
-        px = dev_state.px;
-        py = dev_state.py;
-        max_x = dev_state.display_res_x - 1;
-        max_y = dev_state.display_res_y - 1;
-
-        fresh = dev_state.fresh;
-        dev_state.fresh = false;
-    }
-
-    if (fresh)
-    {
-        real x = (2*px - max_x)/max_x; // (-1)->1
-        real y = (2*py - max_y)/max_y; // idem
-
-        data[TX] = x * 50;
-        data[TY] = y * -50;
-
-        const double dt = t.elapsed_seconds();
-        t.start();
-
-        const double max_yaw = *s.acc_max_yaw, max_pitch = *s.acc_max_pitch;
-        const double dz_ = *s.acc_dz; // closed set of 0->x, some arbitrary x < 1
-
-        for (auto* k_ : { &x, &y })
-        {
-            real& k = *k_;
-
-            if (std::fabs(k) < dz_)
-                k = 0;
-            else
-            {
-                // input has reduced dynamic range
-                k -= copysign(dz_, k);
-                k *= 1 + dz_;
-            }
-        }
-
-        const double c = *s.acc_speed;
-
-        // XXX check this for stability -sh 20180709
-        const double yaw_delta = gain(x) * c * dt;
-        const double pitch_delta = gain(y) * c * dt;
-
-        yaw += yaw_delta;
-        pitch += pitch_delta;
-
-        yaw = clamp(yaw, -max_yaw, max_yaw);
-        pitch = clamp(pitch, -max_pitch, max_pitch);
-    }
-
-    if (do_center)
-    {
-        do_center = false;
-        yaw = 0;
-        pitch = 0;
-    }
-
-    data[Yaw] = yaw;
-    data[Pitch] = pitch;
-    data[Roll] = 0;
-    data[TZ] = 0; // XXX TODO
-
-    // tan(x) in 0->.7 is almost linear. we don't need to adjust.
-    // .7 is 40 degrees which is already quite a lot from the monitor.
-}