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/* Copyright: "i couldn't care less what anyone does with the 5 lines of code i wrote" - mm0zct */
#include "steamvr.hpp"
#include "api/plugin-api.hpp"
#include "compat/util.hpp"
#include "compat/euler.hpp"
#include <cstdlib>
#include <cmath>
#include <QMessageBox>
#include <QDebug>
void steamvr::vr_deleter()
{
static std::atomic_flag atexit_done = ATOMIC_FLAG_INIT;
if (atexit_done.test_and_set(std::memory_order_seq_cst))
{
std::atexit(vr::VR_Shutdown);
}
}
steamvr::vr_t steamvr::vr_init(error_t& error)
{
error = error_t::VRInitError_Unknown;
// the background type would surely confuse users
vr_t vr = vr::VR_Init(&error, vr::EVRApplicationType::VRApplication_Other);
if (vr)
vr_deleter();
return vr;
}
QString steamvr::strerror(error_t error)
{
const char* str(vr::VR_GetVRInitErrorAsSymbol(error));
return QString(str ? str : "No description");
}
steamvr::steamvr() : vr(nullptr)
{
}
steamvr::~steamvr()
{
}
void steamvr::start_tracker(QFrame*)
{
error_t e(error_t::VRInitError_Unknown);
vr = vr_init(e);
if (!vr)
{
QMessageBox::warning(nullptr, "Valve SteamVR init error", strerror(e), QMessageBox::Close, QMessageBox::NoButton);
return;
}
bool ok = false;
for (unsigned k = 0; k < vr::k_unMaxTrackedDeviceCount; k++)
if (vr->GetTrackedDeviceClass(k) == vr::ETrackedDeviceClass::TrackedDeviceClass_HMD)
{
ok = true;
break;
}
if (!ok)
{
QMessageBox::warning(nullptr, "Valve SteamVR init warning", "No HMD connected", QMessageBox::Close, QMessageBox::NoButton);
return;
}
}
void steamvr::data(double* data)
{
if (vr)
{
using m = float[3][4];
vr::TrackedDevicePose_t devices[vr::k_unMaxTrackedDeviceCount] = {};
vr->GetDeviceToAbsoluteTrackingPose(vr::ETrackingUniverseOrigin::TrackingUniverseStanding, 0,
devices, vr::k_unMaxTrackedDeviceCount);
for (unsigned k = 0; k < vr::k_unMaxTrackedDeviceCount; k++)
{
using namespace euler;
if (!devices[k].bPoseIsValid)
continue;
if (vr->GetTrackedDeviceClass(k) != vr::ETrackedDeviceClass::TrackedDeviceClass_HMD)
continue;
const m& M = devices[k].mDeviceToAbsoluteTracking.m;
static constexpr double c[3] { -1, 1, -1 };
for (unsigned i = 0; i < 3; i++)
data[i] = double(M[i][3]) * c[i] * 100;
static constexpr unsigned indices[3] = {Roll, Yaw, Pitch};
rmat r(M[0][0], M[1][0], M[2][0],
M[0][1], M[1][1], M[2][1],
M[0][2], M[1][2], M[2][2]);
euler_t ypr(rmat_to_euler(r));
for (unsigned i = 0; i < 3; i++)
data[indices[i]] = 180/M_PI * ypr(i);
for (unsigned i = 0; i < 3; i++)
data[i+3] *= c[i];
goto done;
}
qDebug() << "steamvr: no device with pose found";
done:
(void)0; // expects statement after label
}
}
void dialog::register_tracker(ITracker*) {}
void dialog::unregister_tracker() {}
OPENTRACK_DECLARE_TRACKER(steamvr, dialog, metadata)
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