def initializeOculusRift(self):
"""
This function initializes the Oculus Rift device and
retrieves the device information and
starts the sensor.
"""
# Initialize the LibOVR (Oculus Rift SDK)
oculusvr.ovr_Initialize()
# Create an HMD device object using the first available HMD available
self.HMD= oculusvr.ovrHmd_Create(0)
# Check if there is no active device
# If there is no active device initialize the debug mode
if not self.HMD:
self.HMD=oculusvr.ovrHmd_CreateDebug(True)
# get more details about the device in the HMDDesc object
# struct_ovrHmdDesc_ is eqaul to ovrHmdDesc of Oculus Rift C API
self.HMDDesc=oculusvr.struct_ovrHmdDesc_()
oculusvr.ovrHmd_GetDesc(self.HMD, oculusvr.byref(self.HMDDesc))
# Start the sensor if possible
self.isSensorEnabled_ = oculusvr.ovrHmd_StartSensor(self.HMD,
oculusvr.ovrSensorCap_Orientation | oculusvr.ovrSensorCap_YawCorrection,
oculusvr.ovrSensorCap_Orientation)
def Render(self,graphContext,graphCanvas):
"""
This function is called by the GraphCanvas object of Gluskap to render each frame
:param graphContext: The GraphContext object used to draw the graph
"""
# If rendering the first frame store the graphContext Object, load the first graph and remove Gluskap textures
if self.isFirstRender_:
self.isFirstRender_=False
self.graphContext_=graphContext
self.saveTextures()
self.removeTextures()
self.gotoNextGraph()
# Check the gamepad status and apply it to camera
self.applyGamePad(graphContext.camera)
# Begin the Oculus Rift frame
oculusvr.ovrHmd_BeginFrame(self.HMD,0)
glBindFramebuffer(GL_FRAMEBUFFER, self.FrameBufferID) # Bind the frame buffer
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
for eye in range(0,2):
eyeType=self.HMDDesc.EyeRenderOrder[eye]
# Get the projection matrix
projectionMatrix=oculusvr.ovrMatrix4f_Projection(self.HMDDesc.DefaultEyeFov[eyeType],1.0, 700.0, '\x01')
# Apply the projection matrix
glMatrixMode(GL_PROJECTION)
glLoadMatrixf(projectionMatrix.toList())
# Start the eye render and grab the sensor data in eyePose
eyePose=oculusvr.ovrHmd_BeginEyeRender(self.HMD,eyeType)
# Roatate the Gluskap camera based on Oculus Rift sensor data
self.rotateCamera(graphContext.camera,eyePose)
eyeTexture=self.EyeTextures[eyeType]
# Configure the viewport
glViewport(eyeTexture.RenderViewport.Pos.x, eyeTexture.RenderViewport.Pos.y,
eyeTexture.RenderViewport.Size.w, eyeTexture.RenderViewport.Size.h)
if self.isPrintMessageStarted_:
self.drawMessage("Printing...")
elif self.isLoadingMessageStarted_:
self.drawMessage("Loading...")
else:
# Draw the graph using Gluskap's drawing engine
graphContext.draw()
oculusvr.ovrHmd_EndEyeRender(self.HMD,eyeType,eyePose,oculusvr.byref(eyeTexture))
glBindFramebuffer(GL_FRAMEBUFFER, 0) # Unbind the frame buffer
graphCanvas.SwapBuffers()
oculusvr.ovrHmd_EndFrame(self.HMD)
