source/openvr/openvrdevice.cpp

   1 #include <openvr.h>
   2 #include "openvrdevice.h"
   3
   4 using namespace std;
   5
   6 namespace Msp {
   7 namespace VR {
   8
   9 unsigned OpenVRDevice::n_instances = 0;
  10
  11 OpenVRDevice::OpenVRDevice()
  12 {
  13         if(!n_instances)
  14         {
  15                 vr::EVRInitError init_err;
  16                 vr::VR_Init(&init_err, vr::VRApplication_Scene);
  17                 if(init_err!=vr::VRInitError_None)
  18                         throw runtime_error("OpenVR initialization failed");
  19         }
  20         ++n_instances;
  21
  22         vr::IVRCompositor *compositor = vr::VRCompositor();
  23         if(!compositor)
  24                 throw runtime_error("OpenVR compositor initialization failed");
  25
  26         vr::VRCompositor()->SetTrackingSpace(vr::TrackingUniverseSeated);
  27 }
  28
  29 OpenVRDevice::~OpenVRDevice()
  30 {
  31         if(!--n_instances)
  32                 vr::VR_Shutdown();
  33 }
  34
  35 OpenVRCamera *OpenVRDevice::create_camera(const GL::Camera &bc)
  36 {
  37         return new OpenVRCamera(*this, bc);
  38 }
  39
  40 OpenVRCombiner *OpenVRDevice::create_combiner(GL::View &)
  41 {
  42         return new OpenVRCombiner(*this);
  43 }
  44
  45 void OpenVRDevice::update_pose_matrices()
  46 {
  47         vector<vr::TrackedDevicePose_t> poses;
  48         poses.resize(vr::k_unTrackedDeviceIndex_Hmd+1);
  49         vr::VRCompositor()->WaitGetPoses(&poses[0], poses.size(), 0, 0);
  50
  51         vr::TrackedDevicePose_t &hmd_pose = poses[vr::k_unTrackedDeviceIndex_Hmd];
  52         if(hmd_pose.bPoseIsValid)
  53         {
  54                 for(unsigned i=0; i<3; ++i)
  55                         for(unsigned j=0; j<4; ++j)
  56                                 hmd_matrix(i, j) = hmd_pose.mDeviceToAbsoluteTracking.m[i][j];
  57         }
  58 }
  59
  60 } // namespace VR
  61 } // namespace Msp