1 files changed, 97 insertions, 0 deletions
diff --git a/tracker-rift-140/impl.cpp b/tracker-rift-140/impl.cpp
new file mode 100644
index 00000000..964858ac
--- /dev/null
+++ b/tracker-rift-140/impl.cpp
@@ -0,0 +1,97 @@
+/* Copyright: "i couldn't care less what anyone does with the 5 lines of code i wrote" - mm0zct */
+#include "rift-140.hpp"
+#include "api/plugin-api.hpp"
+#include "compat/util.hpp"
+#include <Extras/OVR_Math.h>
+
+#include <QString>
+
+using namespace OVR;
+
+Rift_Tracker::Rift_Tracker() : old_yaw(0), hmd(nullptr)
+{
+}
+
+Rift_Tracker::~Rift_Tracker()
+{
+    if (hmd)
+    {
+        ovr_Destroy(hmd);
+        ovr_Shutdown();
+    }
+}
+
+void Rift_Tracker::start_tracker(QFrame*)
+{
+    if (OVR_FAILURE(ovr_Initialize(nullptr)))
+        goto error;
+
+    if(OVR_FAILURE(ovr_Create(&hmd, &luid)))
+        goto error;
+
+    return;
+error:
+    hmd = nullptr;
+
+    ovrErrorInfo err;
+    ovr_GetLastErrorInfo(&err);
+
+    QString strerror(err.ErrorString);
+    if (strerror.size() == 0)
+        strerror = QStringLiteral("Unknown reason #%1").arg(err.Result);
+
+    ovr_Shutdown();
+
+    QMessageBox::warning(nullptr,
+                         "Error",
+                         QStringLiteral("Unable to start Rift tracker: %1").arg(strerror),
+                         QMessageBox::Ok,
+                         QMessageBox::NoButton);
+}
+
+void Rift_Tracker::data(double *data)
+{
+    if (hmd)
+    {
+        ovrTrackingState ss = ovr_GetTrackingState(hmd, 0, false);
+        if (ss.StatusFlags & ovrStatus_OrientationTracked)
+        {
+            static constexpr float c_mult = 8;
+            static constexpr float c_div = 1/c_mult;
+
+            Vector3f axis;
+            float angle;
+
+            const Posef pose(ss.HeadPose.ThePose);
+            pose.Rotation.GetAxisAngle(&axis, &angle);
+            angle *= c_div;
+
+            float yaw, pitch, roll;
+            Quatf(axis, angle).GetYawPitchRoll(&yaw, &pitch, &roll);
+
+            yaw *= c_mult;
+            pitch *= c_mult;
+            roll *= c_mult;
+
+            double yaw_ = double(yaw);
+            if (s.useYawSpring)
+            {
+                yaw_ = old_yaw*s.persistence + (yaw_-old_yaw);
+                if(yaw_ > s.deadzone)
+                    yaw_ -= s.constant_drift;
+                if(yaw_ < -s.deadzone)
+                    yaw_ += s.constant_drift;
+                old_yaw = yaw_;
+            }
+            static constexpr double d2r = 180 / M_PI;
+            data[Yaw] = yaw_                   * -d2r;
+            data[Pitch] = double(pitch)        *  d2r;
+            data[Roll] = double(roll)          *  d2r;
+            data[TX] = double(pose.Translation.x) * -1e2;
+            data[TY] = double(pose.Translation.y) *  1e2;
+            data[TZ] = double(pose.Translation.z) *  1e2;
+        }
+    }
+}
+
+OPENTRACK_DECLARE_TRACKER(Rift_Tracker, TrackerControls, FTNoIR_TrackerDll)