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"""
Oculus Legacy
=============
Oculus (oculus.com) head mounted display for OSX and Linux
It uses a python wrapper to connect with the SDK
It supports the Oculus SDK 0.5
"""
from . import HMD as baseHMD
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from ..backends import oculus_legacy as ovr
from ..backends.oculus_legacy import (
Hmd,
ovrGLTexture,
ovrPosef,
ovrVector3f,
)
class HMD(baseHMD):
def __init__(self):
super(HMD, self).__init__()
from time import sleep
try:
Hmd.initialize()
sleep(0.5)
except SystemError as err:
self.error("__init__", Exception("Oculus initialization failed, check the physical connections and run again", True))
return
try:
debug = not Hmd.detect()
self._device = Hmd(debug=debug)
desc = self._device.hmd.contents
self._frame = -1
sleep(0.1)
self._device.configure_tracking()
self._fovPorts = (
desc.DefaultEyeFov[0],
desc.DefaultEyeFov[1],
)
self._eyeTextures = [ ovrGLTexture(), ovrGLTexture() ]
self._eyeOffsets = [ ovrVector3f(), ovrVector3f() ]
rc = ovr.ovrRenderAPIConfig()
header = rc.Header
header.API = ovr.ovrRenderAPI_OpenGL
header.BackBufferSize = desc.Resolution
header.Multisample = 1
for i in range(8):
rc.PlatformData[i] = 0
self._eyeRenderDescs = self._device.configure_rendering(rc, self._fovPorts)
for eye in range(2):
size = self._device.get_fov_texture_size(eye, self._fovPorts[eye])
self._width[eye], self._height[eye] = size.w, size.h
eyeTexture = self._eyeTextures[eye]
eyeTexture.API = ovr.ovrRenderAPI_OpenGL
header = eyeTexture.Texture.Header
header.TextureSize = size
vp = header.RenderViewport
vp.Size = size
vp.Pos.x = 0
vp.Pos.y = 0
self._eyeOffsets[eye] = self._eyeRenderDescs[eye].HmdToEyeViewOffset
except Exception as E:
raise E
def __del__(self):
if self._device:
self._device.destroy()
self._device = None
ovr.Hmd.shutdown()
def _updateProjectionMatrix(self, near, far):
self.projection_matrix_left = ovr.Hmd.get_perspective(self._fovPorts[0], near, far, True).toList()
self.projection_matrix_right = ovr.Hmd.get_perspective(self._fovPorts[1], near, far, True).toList()
def setup(self, color_texture_left, color_texture_right):
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"""
Initialize device
:param color_texture_left: color texture created externally with the framebuffer object data
:type color_texture_left: GLuint
:param color_texture_right: color texture created externally with the framebuffer object data
:type color_texture_right: GLuint
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:return: return True if the device was properly initialized
:rtype: bool
"""
# disable safety warning
ovr.ovrHmd_DismissHSWDisplay(self._device.hmd)
self._eyeTextures[0].OGL.TexId = color_texture_left
self._eyeTextures[1].OGL.TexId = color_texture_right
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return True
def update(self):
"""
Get fresh tracking data
:return: return left orientation, left_position, right_orientation, right_position
:rtype: tuple(list(4), list(3), list(4), list(3))
"""
self._frame += 1
poses = self._device.get_eye_poses(self._frame, self._eyeOffsets)
self._device.begin_frame(self._frame)
for eye in range(2):
self._orientation[eye] = poses[eye].Orientation.toList()
self._position[eye] = poses[eye].Position.toList()
self._poses = poses
return super(HMD, self).update()
def frameReady(self):
"""
The frame is ready to be send to the device
:return: return True if success
:rtype: bool
"""
self._device.end_frame(self._poses, self._eyeTextures)
return True
def reCenter(self):
"""
Re-center the HMD device
:return: return True if success
:rtype: bool
"""
self._device.recenter_pose()
return True